Nonresidential. v-class Participant Workbook. Energy Code Ace. December Title 24 Part 6 HELPING YOU PLAY YOUR CARDS RIGHT

Transcription

1 2016 Title 24 Part 6 Nonresidential Essentials Modeling v-class Participant Workbook December 2016 Energy Code Ace HELPING YOU PLAY YOUR CARDS RIGHT This program is funded by California utility customers under the auspices of the California Public Utilities Commission and in support of the California Energy Commission

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3 Table of Contents Part Welcome Energy Code Ace Activity: Why are you here? Project Assessment What is Performance Modeling? Performance Approach Characteristics Check Your Understanding Job Intake (Breakout) Activity: Phocus Case Study Part 1 Prepare Intake Sheet Module Summary Envelope Modeling Gathering Information Activity: Phocus Case Study Part 2 Calculating Door and Window Areas Software Inputs Check Your Understanding Title 24 Standard Design and Calculations Activity: Phocus Case Study Part 3 What s better or worse than standard? Part Envelope Modeling (Continued) Results Activity: Phocus Case Study Part 4 Where are the errors? Impact of Envelope Selections Lighting Modeling Gathering Information Check Your Understanding Title 24 Standard Design and Calculations Activity: Phocus Case Study Part 5 Maximum Allowed LPD and Lighting Zones Check Your Understanding Results and Recommendations Title 24 Part 6 Essentials Nonresidential Modeling i

4 Part Mechanical Modeling Gathering Information Software Inputs Activity: Phocus Case Study Part 6 HVAC Take Offs Title 24 Standard Design and Calculations Check Your Understanding Reports Recommendations Activity: Hands-on with Potential Improvements Course Conclusion Course Wrap Up Post-test LEGAL NOTICE Copyright Statewide Codes and Standards Program. All rights reserved, except that this document may be used, copied, and distributed without modification. Neither Pacific Gas and Electric Company, Southern California Edison, Southern California Gas Company, and San Diego Gas and Electric Company, nor any of its employees makes any warranty, express or implied; or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any data, information, method, product, policy or process disclosed in this document; or represents that its use will not infringe any privately-owned rights including, but not limited to, patents, trademarks or copyrights. ABOUT THE STATEWIDE CODES AND STANDARDS PROGRAM The Statewide Codes and Standards Program (C&S Program) is jointly managed by the Pacific Gas and Electric Company, Southern California Edison, Southern California Gas Company, and San Diego Gas and Electric Company. The C&S Program saves energy on behalf of ratepayers by directly influencing standards and code-setting bodies to strengthen energy efficiency regulations, by improving compliance with existing codes and standards, and working with local governments to develop ordinances that exceed statewide minimum requirements. This class is one of many free courses, tools, and resources that the C&S Program offers. Please visit or contact info@energycodeace.com to find out more about all program offerings. This program is funded by California utility customers under the auspices of the California Public Utilities Commission and in support of the California Energy Commission. ii Title 24 Part 6 Essentials Nonresidential Modeling

5 Part Title 24 Part 6 Essentials Nonresidential Modeling Part 1 Martyn Dodd Energy Soft. Demian Vonder Kuhlen Guttmann & Blaevoet Consulting Engineers This program is funded by California utility customers under the auspices of the California Public Utilities Commission and in support of the California Energy Commission. Title 24 Part 6 Essentials Nonresidential Modeling 1-1

6 Welcome Today s Instructors & Host Instructors Host Demian Vonder Kuhlen Guttmann & Blaevoet Consulting Engineers Zack Boyd McLain ID Consulting Getting our attention Hear and be heard! Do NOT select listen only Do NOT select Using Microphone (Computer/Device) DO have the meeting call you or you call the meeting 1-2 Title 24 Part 6 Essentials Nonresidential Modeling

7 Getting our attention If you re not comfortable just shouting out Raise your hand. We ll call on you in a moment. (Don t forget to unmute yourself) Feel free to use the other icons as well If you need technical support Use Chat (lower left of your screen) Direct your question or comment to Hosts Give us a moment to chat back Course Materials Participant Workbooks Content (slides and notes) Breakout materials Downloads Title 24 Part 6 Essentials Nonresidential Modeling 1-3

8 Homework Assignments Part 1 and 2 have Homework Assignments: Do outside of class, after class Practice inputting data and getting reports from the software A word about the software: You will need the following versions to do the homework. If you do NOT have these versions you will get slightly different answers for the Homework Assignments: EnergyPro: v CBECC-Com: v Each assignment takes approximately 30 minutes Course Structure Part 1 Welcome and Introductions Orientation to v-classroom and Pre-test Project Assessment Envelope Modeling (Doors, Fenestration, and Energy Budget) Part 2 Part 3 Envelope Modeling (Interpreting an Envelope Modeling Run) Lighting Modeling (Calculating Baseline Values and Interpreting a Lighting Modeling Run) Mechanical Modeling (HVAC Zones and Interpreting a Mechanical Modeling Run) Make Recommendations for a Project Conclusion and Post-test 1-4 Title 24 Part 6 Essentials Nonresidential Modeling

9 Course Structure Welcome Project Assessment Envelope A Standard Modeling Approach to Lighting Modeling Modeling Mechanical Modeling Intake: Size up and scope a project Gathering Information (Take Offs): Collect, calculate and organize information needed for the model Software Inputs (Model Creation): Structure the model and enter data about the Proposed Design Title 24 Standards (Reality Check): Use the Standard Design as a reference to evaluate the Proposed Design Reports (Error Check): Review reports to identify anomalous results and data entry errors Recommendations (Consultation): Suggest measures to bring project into compliance Course Conclusion Energy Code Ace Energy Code Ace A new website developed by the Statewide Codes & Standards Program to help you meet the requirements of Title 24, Part 6 We offer FREE A variety of tools to help you identify the forms, installation techniques, and building energy standards relevant to building projects in California Training opportunities for Title 24, Part 6: Traditional classroom v-class Decoding Talks Online self-study Request a class Fact Sheets, Trigger Sheets, Checklists, and FAQs to help you understand when Title 24, Part 6 is triggered and how to correctly comply when it is visit us at Title 24 Part 6 Essentials Nonresidential Modeling 1-5

10 Fast & Easy Access to the Standards Navigate the Standards with ease Key word and full-phrase search capabilities Hyperlinked tables Links to related Sections and to Compliance Manuals Glossary function Use the link on the Downloads panel Give it a try during the break 1 P-1 Who is here today? 1-6 Title 24 Part 6 Essentials Nonresidential Modeling

11 Group Discussion Who has taken a v-class before? (Raise Your Hand) Where did you take the v- Class and what was the content of the class? What was your first thoughts when you saw that we were offering a v-class? How will you know if this class has been a success? Do you have specific questions about modeling you want to be sure we cover? Time: 5 minutes Title 24 Part 6 Essentials Nonresidential Modeling 1-7

12 1 PRETEST Pre-test Purpose: To test the course NOT you. It previews the content covered in the course. Description: This is an open book test with 15 multiple choice questions on nonresidential modeling. Directions: Complete the pre-test online in the virtual classroom. You may use any of the documents available for download. Time: 10 minutes (Raise your hand when you re done.) ANONYMOUS The purpose of the pre-test and post-test is to help us measure effectiveness of the course. Your results are anonymous, so please don t feel we re putting you on the spot. Think of the Pre-test as a good preview of some important aspects of the class. Most people don t do very well on the Pre-test, but do great on the Post-test. You will be taking the Pre-test online. Your instructor will put up the Pre-test on the screen and you type right on your screen. Complete what you can of the Pre-test in 10 minutes. Don t worry if you cannot get to all the questions in the time allotted. 1-8 Title 24 Part 6 Essentials Nonresidential Modeling

13 In a couple minutes breakout rooms Full Class Small Independent Groups (Instructor drops by ) Reconvened Full Class Working With Your Breakout Team All members of the team should participate in the breakout Select a team leader to represent the team in the breakout debriefs Pick a team recorder to record team answers to breakout activities Demo and Homework Breakout Teams For the demos and homework reviews we will be separating you into two different breakout teams. Please raise your hand if you will be using CBECC-Com during the class. Pick a designated driver to change tabs to prevent losing work completed on the slides Respect the opinion of other team members Title 24 Part 6 Essentials Nonresidential Modeling 1-9

14 1-About How to Use Connect Tools During Breakouts Activity: Why are you here? Directions: Each participant should type in why he/she is here in the class AND highlight his/her response in a different color from other participants Title 24 Part 6 Essentials Nonresidential Modeling

15 Project Assessment Project Assessment Welcome Project Assessment What is Performance Modeling Performance Approach Characteristics Job Intake (Breakout) Module Summary Envelope Modeling Lighting Modeling Mechanical Modeling Recommendations Course Conclusion Title 24 Part 6 Essentials Nonresidential Modeling 1-11

16 What is Performance Modeling? What is performance modeling? One Approach to Modeling How the Process Works Performance Modeling Considerations 2016 Title 24 Triggers and Summary of Prescriptive Additions and Alterations Performance Modeling: One Approach to Compliance Mandatory Measures Two Ways to Comply with the Standards Prescriptive Approach Performance Approach Standard Design ENV some tradeoff MECH no tradeoff No tradeoffs between ENV, MECH, and LTG LTG some tradeoff Proposed Design Tradeoffs ENV MECH LTG * * See notes for restrictions Compliance Documentation Some prescriptive requirements likely traded away via performance method Look for features that were improved to compensate for the tradeoff 1-12 Title 24 Part 6 Essentials Nonresidential Modeling

17 How the Process Works Proposed Design Meets Mandatory requirements Building envelope, lighting, HVAC, and water heating modeled as shown on plans and specifications Standard Design Meets Mandatory requirements Meets Prescriptive requirements for envelope and lighting ACM assumptions Identical: Proposed Design Simulation Model Proposed Design TDV Energy Surface orientations* Weather Schedules Standard Design Simulation Model Standard Design TDV Energy * Unless glazing area in budget design requires adjustment Performance Modeling Considerations Credit for No Credit for Indoor Lighting Heating Energy Use Cooling Energy Use Fan Power for HVAC Domestic Hot Water (DHW) Pumps Outdoor Lighting Plug loads and appliances Miscellaneous (pools, spas, etc.) Note: Outdoor lighting and pools and spas all must comply on their own. Outdoor lighting, process loads, pools and spas all must comply on their own. Title 24 Part 6 Essentials Nonresidential Modeling 1-13

18 2016 Title 24 Triggers and Summary of Prescriptive Additions and Alterations Proposed Work New Construction Additions Alterations Relevant Triggers Any new building not a low-rise residential occupancy covered by the Scope of the Standards per Section Any change to a building that increases both conditioned floor area and conditioned volume; OR Any space being converted from unconditioned to conditioned space per Section 100.1(b); OR Any new Indoor Lighting in Unconditioned Spaces or Outdoor Lighting or Signs per Sections and Any change that is not an addition to any of the following for a building's: Water heating system Space conditioning system Indoor or outdoor lighting system Envelope that is not an addition 1-14 Title 24 Part 6 Essentials Nonresidential Modeling

19 Nonresidential 2016 Title 24 Triggers and Summary of Prescriptive Additions and Alterations Note: Any new construction, addition or alteration must meet all applicable mandatory measures contained in the Standards. Nonresidential, High-rise Residential and Hotel/Motel Buildings All other buildings covered by the Standards which are not Low-rise Residential buildings. Overview General Type of Proposed Work New Construction Relevant triggers Notes Compliance Options Any new building not a low-rise residential occupancy covered by the Scope of the Standards per Section Per the definitions in Section 100.1(b): Directly and indirectly conditioned space must meet Envelope, Indoor Lighting and Mechanical requirements. Unconditioned space must meet Indoor Lighting requirements only. Outdoor lighting and signs must meet Outdoor Lighting requirements. Covered Processes must meet Covered Processes requirements. Prescriptive Envelope, Mechanical, Water Heating, Indoor Lighting, Outdoor Lighting, Sign requirements and Covered Processes in Sections through Performance Approach in Section Title 24 Part 6 Essentials Nonresidential Modeling 1-15

20 General Type of Proposed Work Additions Relevant triggers Notes Compliance Options Either: Any change to a building that increases conditioned floor area and conditioned volume; or Any space being converted from unconditioned to conditioned space per Section 100.1(b); or Any new Indoor Lighting in Unconditioned Spaces or Outdoor Lighting or Signs per Sections and Per the definitions in Section 100.1(b): Directly and indirectly conditioned space must meet Envelope, Indoor Lighting and Mechanical requirements. Unconditioned space must meet Indoor Lighting requirements only. Outdoor lighting and signs must meet Outdoor Lighting requirements. Covered Processes must meet Covered Processes requirements. For exceptions, see Prescriptive Additions (starting on the next page). Same as New Construction (above), except: Performance Approach may use either "Addition Alone" or "Existing + Addition + Alterations" calculation methods. Alterations For any of the following--any change that is not an addition--to a building's: Water heating system Space conditioning system Indoor lighting system Generally the same as Additions (above), but some differences and exceptions per Section 141.0(b) and Prescriptive per Section 141.0(b) and Performance Approach includes the "Existing + Addition + Alterations" calculation method. Outdoor lighting system Envelope 1-16 Title 24 Part 6 Essentials Nonresidential Modeling

21 Additions Prescriptive Additions HVAC and Water Heating Requirements Notes Compliance Forms Complete all relevant information Per Section 141.0(a), applies to new mechanical and water heating equipment. Any extension of an existing duct system to serve an addition must meet duct sealing and HERS testing requirements of Section 141.0(b)2D. Exceptions: Existing HVAC or DHW equipment expanded to serve an addition. Electric reheat may be expanded by adding VAV boxes if total reheat capacity does not increase by 50%. NRCC-MCH-01-E and NRCC-MCH-02-E and NRCC-MCH-03-E or NRCC-MCH-04-E and NRCC-MCH-05-E Plus, as applicable: NRCC-MCH-07-E NRCC-PLB-01-E Title 24 Part 6 Essentials Nonresidential Modeling 1-17

22 Alterations Prescriptive Alterations Requirements Notes Compliance Forms Complete all relevant information Envelope Insulation Per 141.0(b), Prescriptive Component Approach: o Each altered component must meet the mandatory insulation requirement in Section 141.0(b)1. Meeting the Prescriptive Component Approach may be quite stringent. Dependent on the opaque surface and the Climate Zone. NRCC-ENV-01-E Plus, as applicable NRCC-ENV-02-E NRCC-ENV-03-E NRCC-ENV-04-E Prescriptive Overall TDV Energy Approach: o Alteration shall not increase the Existing Overall TDV Energy. NRCC-ENV-05-E NRCC-ENV-06-E Envelope Reroofing If replacing > 50% or 2,000 square feet of roof surface, must meet Cool Roof requirements in Tables B or C based on roof slope, Per 141.0(b)2Biii, altered low-sloped roofs exposed to the roof deck or recover boards must also be insulated to Table C values, unless meeting one of several exceptions. Some Exceptions to 141.0(b)2Biii insulation requirements: o Existing roof has at least R-7 or a U-factor < o If mechanical equipment on roof not disconnected and lifted, insulation added must still allow 8" from roof membrane surface to top of base flashing o Similar exception at parapet walls. NRCC-ENV-01-E And NRCC-ENV-03-E Envelope Fenestration and Doors Per 141.0(b): o New and replacement fenestration must meet the Tables 141.0A, B, C or D Prescriptive requirements Exceptions: o < 150 ft² replacement fenestration must meet only U-factor, not RSHG or VT OR o < 50 ft² added fenestration must meet only U-factor, not RSHGC or VT NRCC-ENV-01-E Plus, as applicable: NRCC-ENV-02-E or NRCC-ENV-06-E and NRCC-ENV-05-E OR o < 50 ft² added skylight must meet only U-factor, not RSHG or VT 1-18 Title 24 Part 6 Essentials Nonresidential Modeling

23 Prescriptive Alterations HVAC, DHA, and Ducts Ducts only Requirements Notes Compliance Forms Complete all relevant information Any new or replacement space conditioning system must meet Prescriptive requirements of Section per 141.0(b)2C. This includes: duct sealing and HERS testing of new and/or existing ducts per Section 140.4(l)1, 2 and 3 and/or 141.0(b)2D; and replacing existing non-setback thermostats with setback thermostats Per Section 141.0(b)2D, extension of existing ducts or new ducts shall meet the applicable requirements of duct sealing and HERS testing. Exceptions: o In high-rise residential apartments, replacement of same or lower capacity electric resistance heating o When natural gas not available, replacement of same or lower capacity electric reheat or other electric space heating Only duct systems that meet all criteria in Section 140.4(l) 1, 2 and 3 must comply Exceptions: o Existing ducts either constructed, insulated, or sealed with asbestos NRCC-MCH-01-E and NRCC-MCH-02-E and NRCC-MCH-03-E or NRCC-MCH-04-E and NRCC-MCH-05-E Plus, as applicable: NRCC-MCH-07-E NRCC-MCH-01-E Plus: NRCC-MCH-02-E Title 24 Part 6 Essentials Nonresidential Modeling 1-19

24 Prescriptive Alterations Indoor Lighting Requirements Notes Compliance Forms Complete all relevant information New indoor lighting in conditioned or unconditioned spaces must meet the requirements of Section 141.0(b)2I. Section E Prescriptive requirements are triggered when: Alteration where an existing lighting system is modified, luminaires are replaced, or luminaires are disconnected from the circuit, removed and reinstalled, whether in the same location or installed elsewhere. Exceptions: OR OR o o o o Alterations that qualify as a Luminaire Modificationin-Place. Luminaire Modificationin-Place shall meet the requirements in Table F Alteration increases the installed lighting power in an enclosed space 10% or more of fixtures in an enclosed space that are changed, moved, replaced, relocated; or connected to, altered or revised wiring NRCC-LTI-01-E Plus, as applicable: NRCC-LTI-02-E NRCC-LTI-03-E NRCC-LTI-04-E NRCC-LTI-05-E 1-20 Title 24 Part 6 Essentials Nonresidential Modeling

25 Prescriptive Alterations Outdoor Lighting and Signs Requirements Notes Compliance Forms Complete all relevant information New outdoor lighting and/or signs must meet the requirements of Section (b)2J,K. Section Prescriptive requirements are triggered when: alteration increases the connected lighting load of covered outdoor lighting or signs OR replace 10% or more of the luminaires in a lighting application listed in Table A or B AND replace 50% or more of the luminaires in a lighting application listed in Table A or B. OR replace and rewire 50% or more of the ballasts, or relocate the sign to a different location on the same site or on a different site NRCC-LTO-01-E and NRCC-LTO-02-E NRCC-LTO-03-E Plus, as applicable: NRCC-LTS-01-E Title 24 Part 6 Essentials Nonresidential Modeling 1-21

26 Performance Approach Characteristics Performance Approach Characteristics Job Intake and Project Characteristics Characteristics that Drive Decision for Performance Approach Job Intake and Project Characteristics Sizing up the project during intake consider: Project scope (Envelope, Indoor Lighting, Mechanical) Unusual building material Occupancy types New construction or addition/alteration Climate zone Orientation Number of stories Window schedule and dimensions available, including NFRC rated, U-factors and SHGCs HVAC system type and zoning 1-22 Title 24 Part 6 Essentials Nonresidential Modeling

27 Characteristics that Drive Decision for Performance Approach Overall characteristic: Design requires some flexibility beyond what the Prescriptive Approach allows. Primary Reasons Other Reasons Requirement to go Beyond Code Participation in incentive program LEED or other rating system or code requirements Envelope Prescriptive requirements that apply to the envelope Site built glazing area equal to or greater than 1,000 ft² Total glazing area that exceed 40% of the gross wall area High Lighting Power Density (LPD) Mechanical No economizer on units that require it Prescriptively Title 24 Part 6 Essentials Nonresidential Modeling 1-23

28 Check Your Understanding 1. Which approach to compliance does allow trade-offs between Envelope, Lighting and/or Mechanical? a. Mandatory Measure Approach b. Performance Approach c. Prescriptive Approach d. Table A Approach 2. Under the Performance Approach, what factor offers credit towards compliance? a. Outdoor Lighting b. Indoor Lighting c. Process Loads d. Schedule 3. What is the definition of an Addition? (Select all that apply). a. Any change to a building that increases both area or volume b. Any change to a building that increases both area and volume c. Any change that increases the lighting for conditioned or unconditioned spaces 1-24 Title 24 Part 6 Essentials Nonresidential Modeling

29 Job Intake (Breakout) Job Intake Assessing the Project Breakout: Prepare Intake Sheet Assessing Initial Scope of the Project Identify what Standards are involved (new or add/alt) If addition/alteration: Identify what s existing, altered and new Title 24 Part 6 Essentials Nonresidential Modeling 1-25

30 Assessing Initial Scope of the Project Identify what Standards are involved (new or add/alt) If addition/alteration: Identify what s existing, altered and new Assessing Initial Scope of the Project Identify what Standards are involved (new or add/alt) If addition/alteration: Identify what s existing, altered and new 1-26 Title 24 Part 6 Essentials Nonresidential Modeling

31 Assessing Initial Scope of the Project (cont.) Verify consistency across different views/drawings e.g., Elevations match floor plans Assessing Initial Scope of the Project (cont.) Verify orientation Notes on Plans Lot lines Verify plan is to scale Measure a door (typically 3 feet wide) Measure a component that has its dimension noted on the plans Title 24 Part 6 Essentials Nonresidential Modeling 1-27

32 Assessing Initial Scope of the Project (cont.) Identify construction assemblies Check for window schedule or dimensions, U-factors, SHGCs (Solar Heat Gain Coefficients) Compare lighting schedules and RCPs (Reflected Ceiling Plans) Identify HVAC type and efficiencies Identify DHW type and size 1-28 Title 24 Part 6 Essentials Nonresidential Modeling

33 Activity: Phocus Case Study Part 1 Prepare Intake Sheet Situation: This is new construction project for an Office and Warehouse in CZ 09. Directions: Gather basic information about the project from Phocus Plan Set. Note the information on the supplied Intake Sheet. Make note of any missing information. Be prepared to discuss your findings with the group during the debriefing. Title 24 Part 6 Essentials Nonresidential Modeling 1-29

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35 Missing Information After completing the worksheet on the previous page, note areas you would follow up on with the client any necessary information that is unavailable or inconsistent in the plans. Title 24 Part 6 Essentials Nonresidential Modeling 1-31

36 Module Summary Summary Performance modeling offers flexibility, with tradeoffs among features to meet or surpass Prescriptive requirements An initial job intake typically includes sizing up a project to determine its key characteristics: Gather high-level project information Identify any missing information Make a determination of project scope There are different types of Intake Sheets Many consultants create their own You may want to use the partial intake sheet used in the breakout as a springboard for your own 1-32 Title 24 Part 6 Essentials Nonresidential Modeling

37 Envelope Modeling Envelope Modeling Welcome Project Assessment Envelope Modeling Gathering Information Software Inputs Title 24 Standard Design and Calculations Reports Recommendations Lighting Modeling Mechanical Modeling Recommendations Course Conclusion Title 24 Part 6 Essentials Nonresidential Modeling 1-33

38 Gathering Information Gathering Information Take Off Factors How To Do Take Offs Specialty Surfaces Consultant s Role in Modeling Opaque Envelope Breakout: Calculating Door and Window Areas Take Off Factors Take offs include these surfaces: Conditioned floor area (CFA) Area taken to the outside of the walls Gross area exterior walls Window area and orientation Floor plans compared to elevations must be consistent Gross area roof/ceiling Skylights Doors What does 2650 tell you about a window on a plan? How is gross area for fenestration calculated? 1-34 Title 24 Part 6 Essentials Nonresidential Modeling

39 How To Do Take Offs Identify zones For each zone, calculate: CFA (dimensions from drawing or scale) Roof area and tilt/slope Gross wall area and orientation Fenestration area At each orientation Equal to rough opening (not glazed area) Note: Sometimes it is appropriate to consolidate values together Other times it is best to keep them separate It depends upon on a variety of reasons, such as: Overhangs Purpose of model (T24 compliance, LEED, rebate) Fenestration Prescriptive Requirements Total window area Not to exceed 40% of gross wall area If lower than 40%: does not result in a compliance advantage, but does save energy If higher than 40%: is a compliance and energy penalty West-facing window area Not to exceed 40% of gross west wall area If lower than 40%: does not result in a compliance advantage, but does save energy If higher than 40%: is a compliance and energy penalty SHGC and RSHG Generally required to improve as more area is added RSHG requirements are the same for all climate zones Same requirements regardless of orientation U-factor Performance the same regardless of window area Title 24 Part 6 Essentials Nonresidential Modeling 1-35

40 Hidden Windows and Skylights May not be apparent from elevations or from floor plan Compare floor plans with elevations Doesn t show in elevations Doesn t show in floor plans Assembly Editor Assemblies EnergyPro Library of Default Assemblies 1-36 Title 24 Part 6 Essentials Nonresidential Modeling

41 Assembly Editor Assemblies CBECC-Com Library of Default Assemblies Assembly Editor Assemblies Assembly Library has new Workflow for NR Performance Calculations Layers Tab in EnergyPro Title 24 Part 6 Essentials Nonresidential Modeling 1-37

42 Assembly Editor Layers EnergyPro Build Assemblies from pre-defined Material Categories. Layers only apply to Nonresidential Title 24 Performance Simulation(s). Assembly Editor Assemblies Assembly Library has new Workflow for NR Performance Calculations Construction Data in CBECC- Com 1-38 Title 24 Part 6 Essentials Nonresidential Modeling

43 Assembly Editor Layers CBECC-COM Build Assemblies from pre-defined Material Categories. Specialty Surfaces: Example Spandrel Glass Glazing with insulation Virtually opaque; not for vision areas NOT considered fenestration What values would you need for the modeling software? Title 24 Part 6 Essentials Nonresidential Modeling 1-39

44 Consultant s Role in Modeling Opaque Envelope Reflect in the model what s on the plans: Identify the assemblies on the plans Create the wall in the software (Building Tree) In the software, select an existing assembly from Assembly Library OR If assembly not available in the library, create the assembly using Layers Group Discussion What would you do if Materials are not in the library? The assembly has two layers of framing? Time: 5 minutes 1-40 Title 24 Part 6 Essentials Nonresidential Modeling

45 Activity: Phocus Case Study Part 2 Calculating Door and Window Areas Directions: Complete the Door and Window Area worksheet. Gather basic information about the project from Phocus Plan Set. Compare the fenestration on the floor plan information to the elevations and find any hidden windows and skylights. For the conditioned area only, calculate window area, opaque door area and skylight area (if present) at each orientation. Be prepared to discuss your findings with the group during the debriefing. Title 24 Part 6 Essentials Nonresidential Modeling 1-41

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47 Software Inputs Software Inputs Site-Built Fenestration Standards Inputs for Various Fenestration Products Specialty Glass: Example Overhangs and Exterior Shades Site-Built Fenestration Standards Site-built Products are glazed or assembled on site using factory prepared systems May have NFRC rating if no NFRC rating Less than 1000 ft² use: Default values from Standards Table A for U-factor AND Table B for SHGC OR Alternate Default Fenestration Procedure in Reference Appendix NA6 OR NFRC CMA Software Greater than 1000 ft² use: Defaults from Tables A and B NFRC CMA Software Title 24 Part 6 Essentials Nonresidential Modeling 1-43

48 Tables A and B: Default Fenestration U-Factors and SHGC Note: U-factors and SHGC values are built into modeling software Page 107 of the Standards document Page 108 of the Standards document 1-44 Title 24 Part 6 Essentials Nonresidential Modeling

49 SECTION MANDATORY REQUIREMENTS FOR FENESTRATION PRODUCTS AND EXTERIOR DOORS TABLE A DEFAULT FENESTRATION PRODUCT U-FACTORS TABLE B DEFAULT SOLAR HEAT GAIN COEFFICIENT (SHGC) (a) Certification of Fenestration Products and Exterior Doors other than Field-fabricated. Any fenestration product and exterior door, other than field-fabricated fenestration products and field-fabricated exterior doors, may be installed only if the manufacturer has certified to the Commission, or if an independent certifying organization approved by the Commission has certified that the product complies with all of the applicable requirements of this subsection. 1. Air leakage. Manufactured fenestration products and exterior doors shall have air infiltration rates not exceeding 0.3 cfm/ft² of window area, 0.3 cfm/ft² of door area for residential doors, 0.3 cfm/ft² of door area for nonresidential single doors (swinging and sliding), and 1.0 cfm/ft² for nonresidential double doors (swinging), when tested according to NFRC-400 or ASTM E283 at a pressure differential of 75 pascals (or 1.57 pounds/ft²), incorporated herein by reference. NOTES TO SECTION 110.6(a)1: 1. Pet doors must meet 0.3 cfm/ft² when tested according to ASTM E283 at 75 pascals (or 1.57 pounds/ft²). 2. AAMA/WDMA/CSA 101/I.S.2/A specification is equivalent to ASTM E283 at a pressure differential of 75 pascals (or 1.57 pounds/ft²) satisfies the air leakage certification requirements of this section. EXCEPTION to Section 110.6(a)1: Field-fabricated fenestration and field-fabricated exterior doors. 2. U-factor. The fenestration product s U-factor shall be rated in accordance with NFRC 100, or use the applicable default U-factor set forth in TABLE A. EXCEPTION 1 to Section 110.6(a)2: If the fenestration product is a skylight or a vertical site-built fenestration product in a building covered by the nonresidential standards with less than 1,000 square feet of site-built fenestration, the default U-factor may be calculated as set forth in Reference Nonresidential Appendix NA6. EXCEPTION 2 to Section 110.6(a)2: If the fenestration product is an alteration consisting of any area replacement of glass in a skylight product or in a vertical site-built fenestration product, in a building covered by the nonresidential standards, the default U-factor may be calculated as set forth in Reference Nonresidential Appendix NA6. 3. Solar Heat Gain Coefficient (SHGC). The fenestration product s SHGC shall be rated in accordance with NFRC 200, or use the applicable default SHGC set forth in TABLE B. EXCEPTION 1 to Section 110.6(a)3: If the fenestration product is a skylight or a vertical site-built fenestration product in a building covered by the nonresidential standards with less than 1,000 square feet of site-built fenestration, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6. EXCEPTION 2 to Section 110.6(a)3: If the fenestration product is an alteration consisting of any area replacement of glass in a skylight product or in a vertical site-built fenestration product, in a building covered by the nonresidential standards, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6. 4. Visible Transmittance (VT). The fenestration product s VT shall be rated in accordance with NFRC 200 or ASTM E972, for tubular skylights VT shall be rated using NFRC 203. EXCEPTION 1 to Section 110.6(a)4: If the fenestration product is a skylight or a vertical site-built fenestration product in a building covered by the nonresidential standards with less than 1,000 square feet of site-built fenestration, the default VT may be calculated as set forth in Reference Nonresidential Appendix NA6. Title 24 Part 6 Essentials Nonresidential Modeling 1-45

50 EXCEPTION 2 to Section 110.6(a)4: If the fenestration product is an alteration consisting of any area; replacement of glass in a skylight product or in a vertical site-built fenestration product in a building covered by the nonresidential standards, the default VT may be calculated as set forth in Reference Nonresidential Appendix NA6. 5. Labeling. Fenestration products shall: A. Have a temporary label for manufactured fenestration products or a label certificate when the Component Modeling Approach (CMA) is used and for site-built fenestration meeting the requirements of Section (a)1. The temporary label shall not be removed before inspection by the enforcement agency ; and B. Have a permanent label or a label certificate when the Component Modeling Approach (CMA) is used and for site-built fenestration meeting the requirements of Section (a)2 if the product is rated using NFRC procedures. 6. Fenestration Acceptance Requirements. Before an occupancy permit is granted, site-built fenestration products in other than low-rise residential buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified in the Reference Nonresidential Appendix NA7 to ensure that site-built fenestration meet Standards requirements, including a matching label certificate for product(s) installed and be readily accessible at the project location. A Certificate of Acceptance certifying that the fenestration product meets the acceptance requirements shall be completed, signed and submitted to the enforcement agency. EXCEPTION to Section 110.6(a): Fenestration products removed and reinstalled as part of a building alteration or addition. (b) Installation of Field-fabricated Fenestration and Exterior Doors. Field-fabricated fenestration and fieldfabricated exterior doors may be installed only if the compliance documentation has demonstrated compliance for the installation using U-factors from TABLE A and SHGC values from TABLE B. Fieldfabricated fenestration and field-fabricated exterior doors shall be caulked between the fenestration products or exterior door and the building, and shall be weatherstripped. EXCEPTION to Section 110.6(b): Unframed glass doors and fire doors need not be weather stripped or caulked Title 24 Part 6 Essentials Nonresidential Modeling

51 Metal TABLE A DEFAULT FENESTRATION PRODUCT U-FACTORS FRAME PRODUCT TYPE SINGLE PANE 3, 4 U-FACTOR 1, 3, 4 DOUBLE PANE U-FACTOR Metal, Thermal Break Nonmetal 1 GLASS BLOCK 2,3 U-FACTOR Operable Fixed Greenhouse/garden window Doors Skylight N.A N.A N.A. Operable N.A N.A. Fixed Greenhouse/garden window Doors Skylight N.A N.A. N.A N.A. N.A N.A. N.A N.A. Operable Fixed Doors Greenhouse/garden windows Skylight For all dual-glazed fenestration products, adjust the listed U-factors as follows: a. Add 0.05 for products with dividers between panes if spacer is less than 7/16 inch wide. b. Add 0.05 to any product with true divided lite (dividers through the panes). 2 Translucent or transparent panels shall use glass block values when not rated by NFRC Visible Transmittance (VT) shall be calculated by using Reference Nonresidential Appendix NA N.A N.A N.A. 4 Windows with window film applied that is not rated by NFRC 100 shall use the default values from this table. Metal TABLE B DEFAULT SOLAR HEAT GAIN COEFFICIENT (SHGC) FENESTRATION PRODUCT SHGC FRAME TYPE PRODUCT GLAZING Metal, Thermal Break Nonmetal Operable Fixed Operable Fixed Operable Fixed Operable Fixed Operable Fixed Operable Fixed Clear Clear Tinted Tinted Clear Clear Tinted Tinted Clear Clear Tinted Tinted Single Pane 2,3 SHGC Translucent or transparent panels shall use glass block values when not rated by NFRC 200. Visible Transmittance (VT) shall be calculated by using Reference Nonresidential Appendix NA6. Double Pane 2,3 SHGC Glass Block 1,2 SHGC N.A N.A. N.A N.A. N.A N.A. N.A N.A. N.A N.A N.A N.A. Windows with window film applied that is not rated by NFRC 200 shall use the default values from this table Title 24 Part 6 Essentials Nonresidential Modeling 1-47

52 Reference Appendix NA6: Alternate Default Fenestration Procedure For non-nfrc certified products Can be used to determine thermal performance for skylights and site-built vertical fenestration less than 1000 ft² in area Equation NA6-1 UT=(C 1 )+(C 2 xu C ) U T = The fenestration product U-factor C 1 = Coefficient selected from Table NA6-5 C 2 = Coefficient selected from Table NA6-5 U C = Center of glass U-factor Note: Equations are built into Modeling Software Equation NA6-2: SHGC T =(0.08)+(0.86xSHGC C ) SHGC T = SHGC for the fenestration including glass and frame SHGC C = SHGC for the center of glass alone Finding Fenestration Values to Input: Viracon Cut Sheet Example U-factor formula based on center-of-glass U-factor from manufacturer specifications Built into EnergyPro v7 and CBECC-Com 2016 Documented on NRCC-PRF-01-E 1-48 Title 24 Part 6 Essentials Nonresidential Modeling

53 Finding Fenestration Values to Input: Example Design Specifications Excerpt How Glazing Choices Vary When selecting values to enter, your choices will vary based on: Climate zone Design requirements, such as Color of glass High Visible Transmittance (VT) Availability and specifications of products that meet design requirements Compare choices to values in Prescriptive Tables B and C Title 24 Part 6 Essentials Nonresidential Modeling 1-49

54 SECTION PRESCRIPTIVE REQUIREMENTS FOR BUILDING ENVELOPES TABLE B PRESCRIPTIVE ENVELOPE CRITERIA FOR NONRESIDENTIAL BUILDINGS TABLE C PRESCRIPTIVE ENVELOPE CRITERIA FOR HIGH-RISE RESIDENTIAL BUILDING AND GUEST ROOMS OF HOTEL/MOTEL BUILDINGS TABLE B PRESCRIPTIVE ENVELOPE CRITERIA FOR NONRESIDENTIAL BUILDINGS (INCLUDING RELOCATABLE PUBLIC SCHOOL BUILDINGS WHERE MANUFACTURER CERTIFIES USE ONLY IN SPECIFIC CLIMATE ZONE; NOT INCLUDING HIGH-RISE RESIDENTIAL BUILDINGS AND GUEST ROOMS OF HOTEL/MOTEL BUILDINGS) Climate Zone Roofs/ Ceilings Metal Building Wood Framed and Other Maximum U-factor Walls Metal Building Metal-framed Mass Light Mass Heavy Wood-framed and Other Envelope Roofing Products Floors/ Soffits Lowsloped Steep- Sloped Raised Mass Other Aged Solar Reflectance Thermal Emittance Aged Solar Reflectance Thermal Emittance Air Barrier NR NR NR NR NR NR NR NR NR REQ REQ REQ REQ REQ REQ REQ Exterior Doors, Maximum U-factor Non-Swinging Swinging Title 24 Part 6 Essentials Nonresidential Modeling

55 CONTINUED: TABLE B PRESCRIPTIVE ENVELOPE CRITERIA FOR NONRESIDENTIAL BUILDINGS (INCLUDING RELOCATABLE PUBLIC SCHOOL BUILDINGS WHERE MANUFACTURER CERTIFIES USE ONLY IN SPECIFIC CLIMATE ZONE; NOT INCLUDING HIGH-RISE RESIDENTIAL BUILDINGS AND GUEST ROOMS OF HOTEL/MOTEL BUILDINGS) All Climate Zones Fixed Window Operable Window Curtainwall or Storefront Glazed Doors 2 Envelope Fenestration Vertical Area-Weighted Performance Rating Max U-factor Max RSHGC Area-Weighted Performance Rating Min VT Maximum WWR% 40% Glass, Curb Mounted Glass, Deck Mounted Plastic, Curb Mounted Skylights Area-Weighted Performance Rating Max U-factor Max SHGC NR Area-Weighted Performance Rating Min VT Maximum SRR% 5% Title 24 Part 6 Essentials Nonresidential Modeling 1-51

56 TABLE C PRESCRIPTIVE ENVELOPE CRITERIA FOR HIGH-RISE RESIDENTIAL BUILDINGS AND GUEST ROOMS OF HOTEL/MOTEL BUILDINGS Climate Zone Roofs/ Ceilings Metal Building Wood Framed and Other Envelope Maximum U-factor Walls Metal Building Metal-framed Mass Light Mass Heavy Wood-framed and Other Floors/ Soffits Raised Mass Other Roofing Products Low-sloped Steep- Sloped Aged Solar Reflectance NR NR NR NR NR NR NR NR NR NR Thermal Emittance NR NR NR NR NR NR NR NR NR NR Aged Solar Reflectance NR NR Thermal Emittance NR NR Exterior Doors, Maximum U- factor Non-Swinging Swinging Title 24 Part 6 Essentials Nonresidential Modeling

57 CONTINUED: TABLE C PRESCRIPTIVE ENVELOPE CRITERIA FOR HIGH-RISE RESIDENTIAL BUILDINGS AND GUEST ROOMS OF HOTEL/MOTEL BUILDINGS All Climate Zones Fixed Window Operable Window Curtainwall/ Storefront Glazed Doors 2 Envelope Fenestration Vertical Area-Weighted Performance Rating Max U-factor Max RSHGC Area-Weighted Performance Rating Min VT Maximum WWR% 40% Glass, Curb Mounted Glass, Deck Mounted Plastic, Curb Mounted Skylights Area-Weighted Performance Rating Max U-factor Max SHGC NR Area-Weighted Performance Rating Min VT Maximum SRR% 5% Notes: 1. Light mass walls are walls with a heat capacity of at least 7.0 Btu/ft²-oF and less than 15.0 Btu/ft²-oF. Heavy mass walls are walls with a heat capacity of at least 15.0 Btu/ft²-oF. 2. Glazed Doors applies to both site-built and to factory-assembled glazed doors. Title 24 Part 6 Essentials Nonresidential Modeling 1-53

58 Default Fenestration Values: Pros and Cons Why default fenestration values? Client has not decided yet Why avoid using default fenestration values? Defaults are purposefully punitive When are default fenestration values appropriate & useful? Existing building conditions When are default fenestration values required? Never Placeholder Values vs. Actuals When is it appropriate to use placeholder data for modeling fenestration? When customer has not decided When data not available When are actual data needed? Actual data are always preferable to placeholder values Actuals can help bring the project into compliance Where do you find placeholder data? Default Tables A & B Note: These Tables were included on an earlier slide and in the Participant Workbook 1-54 Title 24 Part 6 Essentials Nonresidential Modeling

59 Specialty Glass: Example KalWall ( High-performance with little light penetration Considered fenestration Translucent, not normal glazing What values would you need for the modeling software? Overhangs and Exterior Shades Model overhangs and shades, if there are: Overhangs or fins in the plans Eligible exterior shading devices such as blinds or shutters in the plans These are often used in Nonresidential construction (not so much in Residential) Title 24 Part 6 Essentials Nonresidential Modeling 1-55

60 Check Your Understanding 1. What is the Prescriptive Fenestration maximum Window to Wall Ratio? a. 50% b. 45% c. 30% d. None of the above 2. If the design has less than 1,000 ft² of site built vertical fenestration, you can use which of the following to determine the modeled fenestration properties: a. Table A b. Table B c. Reference Appendix NA6 d. All of the above 3. If the design has greater than 1,000 ft² of site built vertical fenestration, you can use which of the following to determine the modeled fenestration properties: a. NFRC CMA Software b. Joint Appendix JA4 c. Reference Appendix NA6 d. Published center of glass values 1-56 Title 24 Part 6 Essentials Nonresidential Modeling

61 Title 24 Standard Design and Calculations Title 24 Standard Design and Calculations Energy Budget Inputs' Impact Add/Alt Rule for Credit Shading and Cool Roofs Breakout: Better or Worse Than Standard? How Software Uses Inputs to Determine Energy Budget of Standard Design Minimum skylight requirement Certain occupancies have Prescriptive requirements for skylights With Performance Approach, the designer can choose to: Include skylights Avoid using one in areas where required Prescriptively (via tradeoffs) Title 24 Part 6 Essentials Nonresidential Modeling 1-57

62 Getting Credit for Adds and Alts If upgrading, must meet Prescriptive requirements to get credit REMINDER: Identify what s existing, altered or new Surfaces that are completely removed from the existing building (roofs/ceilings, exterior walls, floors and glazing) are not modeled Effect of Shading Climate sensitive issue Check plans: Different windows have different overhangs Consider modeling windows with overhangs separately Self shading of building (side fin) U shaped building L shaped building Projections 1-58 Title 24 Part 6 Essentials Nonresidential Modeling

63 Cool Roofs: Rating and Labeling Installing cool roofs is NOT a Mandatory Measure; it s optional If you want to take compliance credit for a cool roof, Mandatory Measures ( ) require: Testing and labeling by CRRC (or use of default values) Liquid-applied meet performance, durability standards Cool Roofs Fact Sheet Three-page summary of Cool Roof info: Requirements Aged solar reflectance formulas Title 24 Part 6 Essentials Nonresidential Modeling 1-59

64 Cool Roofs: Aged Reflectance Look for aged value for reflectance in CRRC s Rated Product Directory ( If not available there, you can use the formula: Where, ƿ aged = the calculated aged reflectance ƿ aged = β (ƿ init 0.2) β = 0.65 for field-applied coatings, 0.7 for all other roof surfaces ƿ init = the initial CRRC reflectance 1-60 Title 24 Part 6 Essentials Nonresidential Modeling

65 Activity: Phocus Case Study Part 3 What s better or worse than standard? Directions: Complete the Comparing Proposed to Prescriptive Requirements worksheet. Use the References provided to complete the worksheet. For each listed feature, indicate the relevant value for the Prescriptive Requirements. Assume no exterior shading even though it is shown on Phocus Plans. Compare the prescriptive requirements to the Proposed Design for each feature and note whether the Proposed Design is better or worse than the Standard. Be prepared to discuss your findings with the group during the debriefing. Title 24 Part 6 Essentials Nonresidential Modeling 1-61

66 1-62 Title 24 Part 6 Essentials Nonresidential Modeling

67 Follow Up Questions What impact would you see if you had included exterior shading in the model? What do you think is meant by the term Value Engineering? Title 24 Part 6 Essentials Nonresidential Modeling 1-63

68 DEMO Demonstration Layers Application Procedure Using Phocus Plans, we will show you how: The Layers application procedure works. To create a roof product from scratch using the Layers approach. Add the glazing (Breakroom) Directions: Homework Assignment 1 Use Phocus Plans. Insert the fenestration data for all the zones as contained in the case study plan set. Perform a compliance run on the data. Add all overhangs. Insert the roof data for all zones. Create roof assembly using the Layers functionality. Use the Solution File to compare your inputs and results. Determine if the results are reasonable and if not make any corrections as needed. Time: 40 mins 2016 Title 24 Part 6 Essentials Nonresidential Modeling 1-64 Title 24 Part 6 Essentials Nonresidential Modeling

69 Course Structure Welcome and Introduction Part 1 Part 2 Welcome and Introductions Orientation to v-classroom and Pre-test Project Assessment Envelope Modeling (Doors, Fenestration, and Energy Budget) Envelope Modeling (Interpreting a Envelope Modeling Run) Lighting Modeling (Calculating Baseline Values and Interpreting a Lighting Modeling Run) Part 3 Mechanical Modeling (HVAC Zones and Interpreting a Mechanical Modeling Run) Make Recommendations for a Project Conclusion and Post-test Modeling questions Who ya gonna call? Review the error log file Check the user manual and FAQs If you still need help: EnergyPro Support: support@energysoft.com CBECC-Com Support: CBECC.Com@gmail.com Title 24 Part 6 Essentials Nonresidential Modeling 1-65

70 Thank you for your participation today! Thank you for joining us for Title 24 Part 6 Essentials Nonresidential Modeling We look forward to hearing from you tomorrow! Contact Role Phone Martyn Dodd Instructor mart@energysoft.com (415) x 306 Energy Code Ace Training design and development online.training@energycodeace.com Jill Marver Statewide Lead jkz1@pge.com Title 24 Part 6 Essentials Nonresidential Modeling

71 Part Title 24 Part 6 Essentials Nonresidential Modeling Part 2 Martyn Dodd Energy Soft. Demian Vonder Kuhlen Guttmann & Blaevoet Consulting Engineers This program is funded by California utility customers under the auspices of the California Public Utilities Commission and in support of the California Energy Commission. Welcome and Introduction Course Structure Welcome and Introductions Part 1 Orientation to v-classroom and Pre-test Project Assessment Envelope Modeling (Doors, Fenestration, and Energy Budget) Part 2 Envelope Modeling (Interpreting a Envelope Modeling Run) Part 3 Mechanical Modeling (HVAC Zones and Interpreting a Mechanical Modeling Run) Lighting Modeling (Calculating Baseline Values and Interpreting a Lighting Modeling Run) Make Recommendations for a Project Conclusion and Post-test Title 24 Part 6 Essentials Nonresidential Modeling 2-1

72 Envelope Modeling (Continued) Group Discussion What questions do you have about any of the Part 1 topics? Time: 5 minutes Part 1 Topics Project Assessment Reasons To Use Performance Job Intake Envelope Modeling (part one) Gathering Info and Take Offs Fenestration Software Inputs for Fenestration Energy Budget Shading and Cool Roofs DEMO Let s Review Your Homework 2-2 Title 24 Part 6 Essentials Nonresidential Modeling

73 Results Results Interpreting Results Breakout: Where are the errors? Interpreting the Envelope Modeling Run Main sources of inaccuracies: Take-off errors Data-entry errors (such as entering U-factor in SHGC field or vice versa) Accidentally leaving software s default value for a component when plans call for a different value Title 24 Part 6 Essentials Nonresidential Modeling 2-3

74 Interpreting the Envelope Modeling Run (cont.) Check the report (even if in compliance) Confirm margin is consistent and reasonable for overall project design and features e.g.: Results 25% better than Standard Design, but all components and equipment are Standard: Which building component is unreasonable? Is there a data entry error? Check for errors; look carefully over report Is a decimal out of place? (e.g., 1.1 vs. 11) Common mistakes (e.g., entered U-factors for SHGC and vice versa) Look for ways to fine tune Apply appropriate level of accuracy (e.g., default vs. actuals) Interpreting the Envelope Modeling Run (cont.) NRCC-PRF-01-E (p 1 of 20) A full-size version of these example forms are in your workbook to help you follow along NRCC-PRF-01-E (p 13 of 20) 2-4 Title 24 Part 6 Essentials Nonresidential Modeling

75 Interpreting the Envelope Modeling Run (cont.) If project does not comply: Why is the model out of compliance? What are the sensible factors to adjust? NRCC-PRF-01-E (p 1 of 20) Interpreting the Envelope Modeling Run (cont.) If project does not comply: How does the Proposed compare to Standard in terms of: LPD? Envelope? NRCC-PRF-01-E (p 7 of 20) Title 24 Part 6 Essentials Nonresidential Modeling 2-5

76 Interpreting the Envelope Modeling Run (cont.) NRCC-PRF-1-E (p 17 of 20) NRCC-PRF-1-E (p 2 of 20) Interpreting the Envelope Modeling Run (cont.) NRCC-PRF-01-E (p 8 of 20) Reference to relevant Factor entry for each assembly 2-6 Title 24 Part 6 Essentials Nonresidential Modeling

77 Interpreting the Envelope Modeling Run (cont.) NRCC-PRF-01-E (p 8 of 20) Overall U-factor value Overall SHGC value Interpreting the Envelope Modeling Run (cont.) NRCC-PRF-01-E (p 8 of 20) Cool Roof details, if any Title 24 Part 6 Essentials Nonresidential Modeling 2-7

78 Interpreting the Envelope Modeling Run (cont.) NRCC-PRF-01-E (p 6 of 20) Acceptance Test Requirements To be filled in outside the software 2-8 Title 24 Part 6 Essentials Nonresidential Modeling

79 Activity: Phocus Case Study Part 4 Where are the errors? Directions: Compare information on the excerpts from the plan set to the information on the T24 compliance documentation for envelope. Mark up the compliance documents to note what you identified when comparing it to the plan set. Circle errors and discrepancies you find in the compliance documents. Note whether each error likely is a true error or an appropriate substitute value or a rounding off. Summarize your findings on the Summary page. Title 24 Part 6 Essentials Nonresidential Modeling 2-9

80 Summarize your thinking about your review. What do you think are the likely cause(s) of the errors you found? What is the right degree of accuracy for a Title 24 compliance model? 2-10 Title 24 Part 6 Essentials Nonresidential Modeling

81 Impact of Envelope Selections Impact of Envelope Selections Model as default Technique for demonstrating, through modeling, impact of envelope selections Report the (bad) results Model with more efficient envelope features Understand / explain why the Standard Design Budget may change Report the (better) results Model with possible upgrades (cool roof; less glazing) Impact of Glazing Selections How Glazing Choices Affect Energy Use in One Example Project Heating Cooling Compliance Margin Margin Delta Climate Zone Standard Design na na na na na na Proposed Design Default Double Tint Glazing Prescriptive Minimum Glazing % 4.2% 3.0% na na na % 9.8% 8.3% 3.1% 5.6% 5.3% Title 24 Part 6 Essentials Nonresidential Modeling 2-11

82 Envelope Modeling Summary Pay attention to fenestration Area Orientation NFRC tested values U-Factor SHGC Consider what the prescriptive requirements are for your climate zone Make client aware of possible cool roofs 2-12 Title 24 Part 6 Essentials Nonresidential Modeling

83 Lighting Modeling Lighting Modeling Welcome Project Assessment Envelope Modeling Lighting Modeling Gathering Information Title 24 Standard Design and Calculations Reports and Recommendations Mechanical Modeling Recommendations Course Conclusion Title 24 Part 6 Essentials Nonresidential Modeling 2-13

84 Gathering Information Gathering Information Information for an Accurate Lighting Model Information for an Accurate Lighting Model Fixture Type LED Watts per fixture Number of fixtures Fluorescent Lamp types and designations F32T8 Number of lamps per fixture Lamp length (e.g., 4 or 8 fixture?) Watts per fixture Other Lamp types and designations Track Lighting Linear feet Installed with current limiter 2-14 Title 24 Part 6 Essentials Nonresidential Modeling

85 Information for an Accurate Lighting Model LED Input Watts Ballast types Rapid Start Instant Start Normal Output Number of ballasts/fixture Rarely on Lighting Schedule Lamp types and designations F32T8 LED MH70 Number of lamps/fixtures Lamp length (e.g., 4 or 8 fixture?) Information Sources Reflected ceiling plan (RCP) Lighting schedule Sometimes not provided Sometimes don t have needed information Online manufacturer s information Lighting Designer Title 24 Part 6 Essentials Nonresidential Modeling 2-15

86 Information Sources: What to Look For Are all fixtures shown on the plans also shown on the schedule? What do the symbols mean on the plans and schedule? How to differentiate between light fixtures and other things on the plan? How to map these to the schedule? Lighting control symbols (OS and others) Can you take credit for it or is it Mandatory? Which fixtures need controls? Do they have them? Information Sources: Portion of a Lighting Plan Wall Dimmer Occupancy Sensor 2-16 Title 24 Part 6 Essentials Nonresidential Modeling

87 Excerpt from an Example Lighting Plan Title 24 Part 6 Essentials Nonresidential Modeling 2-17

88 Phocus Lighting Schedule Phocus Lighting Plan 2-18 Title 24 Part 6 Essentials Nonresidential Modeling

89 Check Your Understanding 1. Under the Performance Approach, can the Proposed Design s lighting kbtu/ft²-yr be greater than the Standard? a. Yes b. No 2. What information sources are useful in determining lighting compliance? a. Reflected Ceiling Plan b. Lighting Schedule c. Lighting Designer s LPD d. All of the above Title 24 Part 6 Essentials Nonresidential Modeling 2-19

90 Title 24 Standard Design and Calculations Title 24 Standard Design and Calculations Correctly Selecting the Baseline Breakout: Maximum Allowed LPD and Lighting Zones How Lighting Inputs Affect Modeling Results Correctly Selecting the Baseline How the software establishes the lighting energy budget for the Standard Design (values from Prescriptive Approach) Allowed LPDs for different methods Table C (Area Category Method LPDs) Table D (Tailored Method LPDs) Section 100.1, occupancy definitions 2-20 Title 24 Part 6 Essentials Nonresidential Modeling

91 choose * Correctly Selecting the Baseline (cont.) Allowed Lighting Power Densities (LPD) Lighting Design Mandatory Measures Find Allowed Lighting Power Complete** Building Area Category Method - Tailored Method Allowed Watts Compare: Adjusted Actual Allowed Complies Calculate Actual Lighting Power Total Actual Watts Less Control Credits Adjusted Actual Watts Prescriptive approach for lighting involves a comparison of the building s allowed lighting power with its actual lighting power (as adjusted for controls) The adjusted actual watts must be less than the allowed power The lighting allotment must be based on area intended only for occupancy Three methods to determine the allowed lighting power using the Prescriptive Approach: Complete Building method** (Applies only to Prescriptive Not supported in Performance Approach) Area Category method Tailored method When using the Performance Approach, as in this course, the Standard Budget is based on the Allowed, and you may make tradeoffs (such as trading lighting credit or penalty) with Envelope and/or Mechanical. Correctly Selecting the Baseline (cont.) Section 100.1, Occupancy Definitions Finding appropriate definition of occupancy Example from Standards Section100.1, definitions: Auditorium Building is a public building in which a minimum of 90 percent of the building floor area are rooms with fixed seating that are primarily used for public meetings or gatherings. Title 24 Part 6 Essentials Nonresidential Modeling 2-21

92 Correctly Selecting the Baseline (cont.) Area Category Method Lighting Design Mandatory Measures Lighting power values assigned to each major function area of building (offices, lobbies, corridors, etc.) choose * Find Allowed Lighting Power Complete** Building Area Category Method - Tailored Method Allowed Watts Calculate Actual Lighting Power Total Actual Watts Less Control Credits Adjusted Actual Watts Compare: Adjusted Actual Allowed Complies **Complete Building method (Applies only to Prescriptive Not supported in the Performance Approach) Correctly Selecting the Baseline (cont.) Area Category Footnotes Identify if the project might benefit from using Area Category lighting allowances vs. using Complete Building Look to see if there are any areas that qualify for the Area Category Footnotes (Standards Table C Area Category Method Lighting Power Density Values [watts/sq. ft.] footnotes) Task space with ornamental chandeliers and sconces Task space required for specialized task work Art, craft assembly or manufacturing operation Lab in a school Task space for precision commercial and industrial work 2-22 Title 24 Part 6 Essentials Nonresidential Modeling

93 choose * Correctly Selecting the Baseline (cont.) Tailored Method Lighting Design Mandatory Measures Find Allowed Lighting Power Complete** Building Area Category Method Tailored - Tailored Method Method Calculate Actual Lighting Power Total Actual Watts Less Control Credits When additional flexibility needed to accommodate special task lighting in specific areas Lighting power allowances determined room-byroom and task-by-task Tailored Method can be used for a limited number of primary function areas Allowed Watts Adjusted Actual Watts Compare: Adjusted Actual Allowed Complies **Complete Building method not supported by software Correctly Selecting the Baseline (cont.) Tailored Additional Power Allowance Identify if the project might benefit from using the Tailored Approach vs. the Area Category lighting allowances or Complete Building Look to see if there are any areas that qualify for the Tailored Additional Power Allowance (Standards Table D Tailored Method Lighting Power Allowances) Wall Display Lighting Merchandise shelving, etc.. Floor Display Lighting Merchandise racks, etc.. Additional Ornamental Lighting Power Chandeliers, sconces, lanterns, etc.. Very Valuable Display Small objects, enclosed display cases, jewelry, watches, etc. There are limitations on applicability Use it or Loose it Credits Title 24 Part 6 Essentials Nonresidential Modeling 2-23

94 SECTION PRESCRIPTIVE REQUIREMENTS FOR INDOOR LIGHTING TABLE C AREA CATEGORY METHOD - LIGHTING POWER DENSITY VALUES (WATTS/FT²) TABLE D TAILORED METHOD LIGHTING POWER ALLOWANCES TABLE C AREA CATEGORY METHOD - LIGHTING POWER DENSITY VALUES (WATTS/FT²) PRIMARY FUNCTION AREA ALLOWED LIGHTING POWER DENSITY (W/ft²) PRIMARY FUNCTION AREA ALLOWED LIGHTING POWER DENSITY (W/ft²) Auditorium Area Reading areas Library Area Auto Repair Area Stack areas Beauty Salon Area 1.7 Hotel lobby Lobby Area Civic Meeting Place Area Main entry lobby Classroom, Lecture, Training, Vocational Areas Commercial and Industrial Storage Areas (conditioned and unconditioned) Commercial and Industrial Storage Areas (refrigerated) Convention, Conference, Multipurpose and Meeting Center Areas Locker/Dressing Room Lounge Area Malls and Atria Medical and Clinical Care Area 1.2 Corridor, Restroom, Stair, and Support 0.60 > 250 square feet 0.75 Areas Office Area Dining Area square feet 1.0 Electrical, Mechanical, Telephone Parking Area 10 Rooms 0.14 Exercise Center, Gymnasium Areas Parking Garage 1.0 Area Dedicated Ramps 0.30 Exhibit, Museum Areas 1.8 Daylight Adaptation Zones Financial Transaction Area Religious Worship Area General Commercial and Industrial Work Areas Low bay Retail Merchandise Sales, Wholesale High bay Showroom Areas and 7 Precision Motion picture Theater Area Grocery Sales Area and 7 Performance Title 24 Part 6 Essentials Nonresidential Modeling

95 CONTINUED: TABLE C Hotel Function Area Transportation Function Area AREA CATEGORY METHOD - LIGHTING POWER DENSITY VALUES (WATTS/FT²) Concourse & Baggage 0.50 Ticketing 1.0 Kitchen, Food Preparation Areas 1.2 Videoconferencing Studio Laboratory Area, Scientific Waiting Area Laundry Area 0.70 All other areas 0.50 Footnotes for this table are listed below. FOOTNOTES FOR TABLE C: See Section 140.6(c)2 for an explanation of additional lighting power available for specialized task work, ornamental, precision, accent, display, decorative, and white boards and chalk boards, in accordance with the footnotes in this table. The smallest of the added lighting power listed in each footnote below, or the actual design wattage, may be added to the allowed lighting power only when using the Area Category Method of compliance. Footnote number Type of lighting system allowed Allowed lighting power density. (W/ft 2 of task area unless otherwise noted) 1 Specialized task work 0.20 W/ft 2 2 Specialized task work 0.50 W/ft 2 3 Ornamental lighting as defined in Section and in accordance with Section (c) W/ft 2 4 Precision commercial and industrial work 1.0 W/ft 2 5 Per linear foot of white board or chalk board. 5.5 W per linear foot 6 Accent, display and feature lighting - luminaires shall be adjustable or directional 7 Decorative lighting - primary function shall be decorative and shall be in addition to general illumination. 8 Additional Videoconferencing Studio lighting complying with all of the requirements in Section 140.6(c)2Gvii. 9 Daylight Adaptation Zones shall be no longer than 66 feet from the entrance to the parking garage 10 Additional allowance for ATM locations in Parking Garages. Allowance per ATM W/ft W/ft W/ft watts for first ATM location. 50 watt for each additional ATM location in a group. Title 24 Part 6 Essentials Nonresidential Modeling 2-25

96 TABLE D TAILORED METHOD LIGHTING POWER ALLOWANCES Primary Function Area General Illumination Level (Lux) Wall Display Lighting Power Density (W/ft) Allowed Combined Floor Display Power and Task Lighting Power Density (W/ft²) Allowed Ornamental/ Special Effect Lighting Power Density (W/ft²) Auditorium Area Civic Meeting Place Convention, Conference, Multipurpose, and Meeting Center Areas Dining Areas Exhibit, Museum Areas Financial Transaction Area Grocery Store Area Hotel Function Area Lobby Area: Hotel lobby Main entry lobby Lounge Area Malls and Atria Religious Worship Area Retail Merchandise Sales, and Showroom Areas Theater Area: Motion picture Performance Transportation Function Area Waiting Area Title 24 Part 6 Essentials Nonresidential Modeling

97 Activity: Phocus Case Study Part 5 Maximum Allowed LPD and Lighting Zones Directions: Use the plan set and references to determine maximum allowed LPD and Lighting Zones for Phocus. Complete the worksheet by determining: The method you would use to set the allowed wattage, and explain why you selected that method. The appropriate function/use and maximum allowed LPD for any areas you identify. On the Floor Plan tab, draw the lighting zones you have identified for Phocus. Be prepared to discuss you answers with the group. Title 24 Part 6 Essentials Nonresidential Modeling 2-27

98 Phocus Lighting Zones On the Floor Plan below, mark the lighting zones you have identified for this project Title 24 Part 6 Essentials Nonresidential Modeling

99 How Lighting Inputs Affect Modeling Results Occupancy Types How Lighting Inputs Affect Modeling Results CBECC-Com Occupancy Types Title 24 Part 6 Essentials Nonresidential Modeling 2-29

100 How Lighting Inputs Affect Modeling Results Occupancy Types How Lighting Inputs Affect Modeling Results (cont.) Fixture wattage, quantity 2-30 Title 24 Part 6 Essentials Nonresidential Modeling

101 How Lighting Inputs Affect Modeling Results (cont.) Fixture wattage, quantity How Lighting Inputs Affect Modeling Results CBECC-Com Fixture wattage, quantity Title 24 Part 6 Essentials Nonresidential Modeling 2-31

102 How Lighting Inputs Affect Modeling Results (cont.) HVAC energy use is impacted by lighting Reduce lighting: heating energy likely to go up Increase lighting: cooling energy likely to go up Fan energy might change In mild climates, effectiveness of economizer is impacted Check Your Understanding 1. What characteristics of the fixture are important in determining the wattage to model? a. Lighting control type b. Number of fixtures c. Fixture wattage d. All of the above 2. What performance energy use category is affected by the lighting design? a. Heating b. Cooling c. Fans d. All of the above 2-32 Title 24 Part 6 Essentials Nonresidential Modeling

103 Results and Recommendations Results NR Lighting Modeling Run: Interpreting Results Interpreting Results: Example Lighting Run NRCC-PRF-01-E Section Q Indoor Conditioned Lighting General Information Occupancy Breakdown Title 24 Part 6 Essentials Nonresidential Modeling 2-33

104 Interpreting Results: Example Lighting Run (cont.) NRCC-PRF-01-E Section R Indoor Conditioned Lighting General Information Lighting Fixture Breakdown Interpreting Results: Example Lighting Run (cont.) PERF-LTI-Details Section A Indoor Conditioned Lighting Credits 2-34 Title 24 Part 6 Essentials Nonresidential Modeling

105 Interpreting Results: Example Lighting Run (cont.) PERF-LTI-Details Section H Indoor and Outdoor Lighting Acceptance Tests DEMO Demonstration Lighting Modeling Title 24 Part 6 Essentials Nonresidential Modeling 2-35

106 What Bright Ideas have made Lighting Designers scream? Lighting Modeling Summary Establish your own takeoff system to be sure you find all fixtures on the plans Verify the fixture wattages and account for the controls in the model Discuss control strategies that may reduce lighting energy usage 2-36 Title 24 Part 6 Essentials Nonresidential Modeling

107 Homework Assignment 2 Directions: Use the Phocus plans. Review the Lighting Plan and Lighting Schedule. Insert the appropriate fixture Watts and fixture counts into the model. Conduct a compliance run. Use the Solution File to compare your results and confirm that they are reasonable. Make any corrections as appropriate. Extra Credits: Add control credits to the modeled fixtures. Which Controls for credits apply? Apply the ornamental lighting credit for the Lobby. Add exterior lighting into the energy model. Time: 30 mins. Course Structure Welcome and Introduction Part 1 Part 2 Welcome and Introductions Orientation to v-classroom and Pre-test Project Assessment Envelope Modeling (Doors, Fenestration, and Energy Budget) Envelope Modeling (Interpreting a Envelope Modeling Run) Lighting Modeling (Calculating Baseline Values and Interpreting a Lighting Modeling Run) Part 3 Mechanical Modeling (HVAC Zones and Interpreting a Mechanical Modeling Run) Make Recommendations for a Project Conclusion and Post-test Title 24 Part 6 Essentials Nonresidential Modeling 2-37

108 Modeling questions Who ya gonna call? Review the error log file Check the user manual and FAQs If you still need help: EnergyPro Support: CBECC-Com Support: Thank you for your participation today! Thank you for joining us for Title 24 Part 6 Essentials Nonresidential Modeling We look forward to hearing from you tomorrow! Contact Role Phone Martyn Dodd Instructor mart@energysoft.com (415) x 306 Energy Code Ace Training design and development online.training@energycodeace.com Jill Marver Statewide Lead jkz1@pge.com Title 24 Part 6 Essentials Nonresidential Modeling

109 Part Title 24 Part 6 Essentials Nonresidential Modeling Part 3 Martyn Dodd Energy Soft. Demian Vonder Kuhlen Guttmann & Blaevoet Consulting Engineers This program is funded by California utility customers under the auspices of the California Public Utilities Commission and in support of the California Energy Commission. Title 24 Part 6 Essentials Nonresidential Modeling 3-1

110 Course Structure Welcome and Introduction Part 1 Part 2 Welcome and Introductions Orientation to v-classroom and Pre-test Project Assessment Envelope Modeling (Doors, Fenestration, and Energy Budget) Envelope Modeling (Interpreting an Envelope Modeling Run) Lighting Modeling (Calculating Baseline Values and Interpreting a Lighting Modeling Run) Part 3 Mechanical Modeling (HVAC Zones and Interpreting a Mechanical Modeling Run) Make Recommendations for a Project Conclusion and Post-test Group Discussion What questions do you have about any of the Part 2 topics? Time: 5 minutes Part 2 Topics Interpreting the results of an envelope modeling run Lighting modeling Calculating Baseline Values Interpreting a Lighting Modeling Run 3-2 Title 24 Part 6 Essentials Nonresidential Modeling

111 Mechanical Modeling Mechanical Modeling Welcome Project Assessment Envelope Modeling Lighting Modeling Mechanical Modeling Gathering Information Software Inputs Title 24 Standard Design and Calculations Reports and Recommendations Recommendations Course Conclusion Title 24 Part 6 Essentials Nonresidential Modeling 3-3

112 Gathering Information Gathering Information Information for an Accurate Mechanical Model Information Sources Figuring Out Zones and Loads Prepare for Meeting with Mechanical Engineer Identifying What s Missing Determining Appropriate Level of Accuracy Occupancies Where DHW Typically Matters Detecting DHW Impact Process and Receptacle Loads Information for an Accurate Mechanical Model Simple Systems Built-up Systems Small package system Gas/electric or heat pump Single-zone package system Gas/electric or heat pump Air-cooled chiller Water-cooled chiller Cooling tower, pumps, fans Absorption chiller Split systems Electric or heat pump Packaged terminal systems PTAC or PTHP Gas Furnace Two- or four-pipe fan coil Boiler Air handler Constant air volume (CAV) Variable air volume (VAV) Existing Central Plants Using actual information 3-4 Title 24 Part 6 Essentials Nonresidential Modeling

113 Information Sources: Mechanical Schedule Courtesy of Gary Hennings, H&M Mechanical Group 8517 Earhart Rd Ste 230, Oakland, CA Title 24 Part 6 Essentials Nonresidential Modeling 3-5

114 Example Mechanical Schedule (part 1 of 2) Courtesy of Gary Hennings, H&M Mechanical Group 8517 Earhart Rd Ste 230, Oakland, CA Title 24 Part 6 Essentials Nonresidential Modeling

115 Example Mechanical Schedule (part 2 of 2) Title 24 Part 6 Essentials Nonresidential Modeling 3-7

116 Figuring Out Zones and Loads Where to look for zoning information Mechanical plans Duct layout (can be difficult to interpret) Zoning diagram (rarely available) Mechanical Engineer Figuring Out Zones and Loads (cont.) What Your Model Needs to Represent About loads: Size (watts per sq. ft.) Where the loads occur Which HVAC systems serve them Whether they are real or future loads Whether the assumptions can be well defended to the building department How much of the load ends up in the space (rather than vented via a hood) 3-8 Title 24 Part 6 Essentials Nonresidential Modeling

117 Figuring Out Zones and Loads (cont.) Courtesy of G&B Prepare for Meeting with Mechanical Engineer Build the model based on the plan Look for things driving up energy use Note alternatives to discuss with Mechanical Engineer Be prepared with questions and to verify assumptions, such as: Do you have a complete terminal box schedule? What s the brake horsepower for the supply fan? Title 24 Part 6 Essentials Nonresidential Modeling 3-9

118 Identifying What s Missing Look for missing information, such as: Motor horsepower (Brake HP preferred) Variable speed drives (VSDs) Economizer Might not be shown, but might be needed Constant Air Volume (CAV) or Variable Air Volume (VAV) Air Handling Units (AHUs) If VAV, look for VAV box information An example of VAV box excerpt from a Mechanical Schedule on next slide Identifying What s Missing (cont.) VAV box excerpt from a Mechanical Schedule 3-10 Title 24 Part 6 Essentials Nonresidential Modeling

119 Determining Appropriate Level of Accuracy What degree of accuracy is appropriate? Placeholder values Default values Actual values based on specific equipment Appropriate degree of accuracy depends on: How well defined the mechanical systems are when you are modeling How big an impact the values make on compliance margin / energy budget A fully developed, complete mechanical schedule rarely is available until project is done Specs evolve during development Detecting Impact of DHW Systems Are all likely domestic hot water (DHW) systems included in the plans? What s missing? What seems unlikely? What s the relative impact? If DHW ~10% of facility s total energy use, look for efficiency opportunities Perform what if analysis using a more efficient model of the same type of equipment Consult with Mechanical Engineer before swapping equipment type or manufacturer If DHW ~2% of total usage, look for efficiencies elsewhere Title 24 Part 6 Essentials Nonresidential Modeling 3-11

120 Occupancies Where DHW Typically Matters Climate Zone 12 % of Energy Budget Compliance Margin Compliance Margin Delta Office Restaurant Office Restaurant Office Restaurant Standard Efficiency 50 gallon storage water heater 3.5% 19.5% 7.1% 6.1% na na High Efficiency 50 gallon storage water heater 1.1% 18.3% 10.9% 8.1% 3.8% 2.0%* High Efficiency Tankless water heater 1.0% 17.2% 11.0% 9.8% 3.9% 3.7% Process and Receptacle Loads 3-12 Title 24 Part 6 Essentials Nonresidential Modeling

121 Process and Receptacle Loads Process and Receptacle Loads (cont.) Clues that the Proposed Design includes special loads: Dedicated cooling for data centers Exhaust hoods Placeholders on the mechanical schedule Cooling tower that s just sitting there Photo by The Planet dedicated hosting: Model indicates the cooling system is drastically oversized Title 24 Part 6 Essentials Nonresidential Modeling 3-13

122 Software Inputs Software Inputs Appropriate HVAC Input Values for Modeling Software Breakout: HVAC Take Offs Appropriate HVAC Input Values for Modeling Software System Types Heat Pump Furnace System CFM Supply fan (e.g., 2,000 CFM) Return fan (e.g., 1,500 CFM) System Cooling Capacity Sensible (e.g., 42,000 Btuh) Total (e.g., 60,000 Btuh) System Heating Capacity Is this handled at the Zone? (schedules) 3-14 Title 24 Part 6 Essentials Nonresidential Modeling

123 Appropriate HVAC Input Values for Modeling Software (cont.) Use the equipment databases published by CEC Available via: CEC website appliances/ Some software packages Contains partial information for certain equipment May not be fully up to date Title 24 Part 6 Essentials Nonresidential Modeling 3-15

124 Activity: Phocus Case Study Part 6 HVAC Take Offs Directions: Use the plan set and references to determine HVAC Take Offs for Phocus. Summarize available HVAC information you would use to enter data into energy modeling software. Identify the HVAC zone and sketch it onto the plan. Fill in the HVAC Data Summary Sheets. Note any missing information or issues you wish to discuss with the engineer on the Missing Info tab. Be prepared to discuss you answers with the group Title 24 Part 6 Essentials Nonresidential Modeling

125 Phocus Mechanical Plan Title 24 Part 6 Essentials Nonresidential Modeling 3-17

126 HVAC Data Summary Sheet - Phocus 3-18 Title 24 Part 6 Essentials Nonresidential Modeling

127 Title 24 Standard Design and Calculations Title 24 Standard Design and Calculations Software Inputs That Determine Energy Budget Software Inputs That Determine Energy Budget HVAC System Map Building Type Residential or hotel/motel guestrooms in a building with 3 or fewer floors Residential or Hotel/motel Guestrooms in a building with 4 or more floors Warehouse and light manufacturing space types (per the Appendix 5.4A Schedule column) that do not include cooling in the proposed design Standard Design System 1 - PTAC System 2 - FPFC System 9 - HEATVENT Covered Process See Table 6 System Map for Covered Processes All other space types See Table 5 Nonresidential Spaces (Not Including Covered Processes) Title 24 Part 6 Essentials Nonresidential Modeling 3-19

128 Software Inputs That Determine Energy Budget Table 5: Nonresidential Spaces (not including covered processes) Table 6: System Map for Covered Processes 3-20 Title 24 Part 6 Essentials Nonresidential Modeling

129 2016 Nonresidential ACM Manual HVAC System Map The HVAC system in the standard design depends on the primary building activity, the size of the building and the number of floors. Details about these systems are provided in subsequent sections. Many of the building descriptors have a one-to-one relationship between the proposed design and the standard design, for example, every wall in the proposed design has a corresponding wall in the standard design. For HVAC systems, however, this one-to-one relationship generally does not hold. The HVAC system serving the proposed design and the standard design may be completely different, each with different components. HVAC system in the standard design shall be selected from Table 4 HVAC System Map and be based on building type, number of floors, conditioned floor area, and heating source. Moreover, the selected system shall conform to the descriptions in Table 7 System Descriptions. For systems 1, 2, 3, 7, 10, and 11, each thermal zone shall be modeled with a respective HVAC system. For systems 5, 6, and 9, each floor shall be modeled with a separate HVAC system. Floors with identical thermal zones and occupancies can be grouped for modeling. The standard design heating source is natural gas. Building Type Table 4 HVAC System Map Standard Design Residential or hotel/motel guestrooms in a building with 3 or fewer floors Residential or Hotel/motel Guestrooms in a building with 4 or more floors Warehouse and light manufacturing space types (per the Appendix 5.4A Schedule column) that do not include cooling in the proposed design Covered Process All other space types System 1 - PTAC System 2 - FPFC System 9 - HEATVENT See Table 6 System Map for Covered Processes See Table 5 Nonresidential Spaces (Not Including Covered Processes) Table 5 Nonresidential Spaces (Not Including Covered Processes) Building Area Floors Standard Design Description 10,000 ft 2 1 floor PSZ Packaged Single Zone >1 floor PVAV Packaged VAV Unit 10,000 ft2 150,000 ft2 Any PVAV Packaged VAV Unit >150,000 ft2 1 floor SZVAV Single-zone VAV Unit >1 floor VAVS Built-up VAV Unit Title 24 Part 6 Essentials Nonresidential Modeling 3-21

130 Table 6 System Map for Covered Processes Building Type or Space Type Floors Baseline System Total computer room design cooling load is over 3,000,000 Btu/h Note: if the user chooses computer room for the space type and enters a receptacle load less than 20 W/ft 2 then the proposed and baseline shall use a receptacle load of 20 W/ft 2. Computer rooms that do not meet the conditions for System 10, CRAH Any Any System 10 CRAH Unit System 11 CRAC Unit Laboratory Space Any System 12 LAB Restaurant Kitchen Any System 13 KITCH Table 7 System Descriptions System Type Description Detail System 1 PTAC Packaged Terminal Air Conditioner Ductless single-zone DX unit with hot water natural gas boiler System 2 FPFC Four-Pipe Fan Coil Central plant with terminal units with hot water and chilled water coils, with separate ventilation source System 3 PSZ Packaged Single Zone Single-zone constant volume DX unit with gas heating System 4 RESERVED System 5 PVAV Packaged VAV Unit VAV reheat system; packaged variable volume DX unit with gas heating and with hot water reheat terminal units System 6 VAVS Built-up VAV Unit Variable volume system with chilled water and hot water coils, water-cooled chiller, tower and central boiler System 7 SZVAV System 8 RESERVED System 9 HEATVENT System 10 CRAH System 11 CRAC Packaged Single-Zone VAV Unit Heating and Ventilation Only Computer Room Air Handler Computer Room Air Conditioner Single-zone variable volume DX unit with variablespeed drive and gas heating Gas heating and ventilation Built-up variable volume unit with chilled water, no heating Packaged variable volume DX unit with no heating System 12 LAB Laboratory HVAC System For floor area < 50,000 ft2:packaged variable volume system with 100% OA and minimum ventilation rate of 6 ACH For Floor Area>= 50,000 ft2, built-up VAV (VAVS) with water-cooled chiller and central boiler System 13 KITCH Kitchen HVAC System Dedicated makeup air unit (MAU) CHW if building is VAVS, DX otherwise. Dedicated exhaust fan Title 24 Part 6 Essentials Nonresidential Modeling

131 Section Mandatory Requirements for Space Conditioning Equipment Table A Electrically Operated Unitary Air Conditioners and Condensing Units Minimum Efficiency Requirements Table B Unitary and Applied Head Pumps, Minimum Efficiency Requirements Table C -Air-Cooled Gas-Engine Heat Pumps TABLE A ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS MINIMUM EFFICIENCY REQUIREMENTS Equipment Type Size Category Efficiency a, b Before 1/1/2016 After 1/1/2016 c Test Procedu re 65,000 Btu/h and < 135,000 Btu/h 11.2 EER 11.4 IEER 11.2 EER 12.9 IEER ANSI/AHRI 340/360 Air conditioners, air cooled both split system and single package 135,000 Btu/h and < 240,000 Btu/h 240,000 Btu/h and < 760,000 Btu/h 11.0 EER 11.2 IEER 10.1 EER 10.2 IEER 11.0 EER 12.4 IEER 10.0 EER 11.6 IEER ANSI/AHRI 340/ ,000 Btu/h 9.7 EER 9.8 IEER 9.7 EER 11.2 IEER 65,000 Btu/h and < 135,000 Btu/h 12.1 EER 12.3 IEER 12.1 EER 13.9 IEER ANSI/AHRI 340/360 Air conditioners, water cooled 135,000 Btu/h and < 240,000 Btu/h 240,000 Btu/h and < 760,000 Btu/h 12.5 EER 12.5 IEER 12.4 EER 12.6 IEER 12.5 EER 13.9 IEER 12.4 EER 13.6 IEER ANSI/AHRI 340/360 ANSI/AHRI 340/ ,000 Btu/h 12.2 EER 12.4 IEER 12.2EER 13.5 IEER ANSI/AHRI 340/360 Air conditioners, evaporatively cooled Condensing units, air cooled Condensing units, water cooled Condensing units, evaporatively cooled 65,000 Btu/h and < 135,000 Btu/h 135,000 Btu/h and < 240,000 Btu/h 240,000 Btu/h and < 760,000 Btu/h 760,000 Btu/h 135,000 Btu/h 135,000 Btu/h 135,000 Btu/h 12.1 EER b 12.3 IEER b ANSI/AHRI 340/ EER b 12.2 IEER b ANSI/AHRI 340/ EER b 12.1 IEER b ANSI/AHRI 340/ EER b 11.9 IEER b ANSI/AHRI 340/ EER 11.8 IEER 13.5 EER 14.0 IEER 13.5 EER 14.0 IEER ANSI/AHRI 365 a b c IEERs are only applicable to equipment with capacity control as as specified by ANSI/AHRI 340/360 test procedures Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat. Applicable test procedure and reference year are provided under the definitions. Title 24 Part 6 Essentials Nonresidential Modeling 3-23

132 TABLE B UNITARY AND APPLIED HEAT PUMPS, MINIMUM EFFICIENCY REQUIREMENTS Equipment Type Air Cooled (Cooling Mode), both split system and single package Size Category 65,000 Btu/h and < 135,000 Btu/h 135,000 Btu/h and < 240,000 Btu/h 240,000 Btu/h Efficiency a,b Before 1/1/2016 After 1/1/ EER 11.2 IEER 10.6 EER 10.7 IEER 9.5 EER 9.6 IEER 11.0 EER 12.2 IEER 10.6 EER 11.6 IEER 9.5 EER 10.6 IEER Test Procedure c ANSI/AHRI 340/360 Water source (cooling mode) 65,000 Btu/h and < 135,000 Btu/h 86ºF entering water 13.0 EER ISO Groundwater source (cooling mode) < 135,000 Btu/h 59ºF entering water 18.0 EER ISO Ground source (cooling mode) < 135,000 Btu/h 77ºF entering water 14.1 EER ISO Water source water-towater (cooling mode) < 135,000 Btu/h 86ºF entering water 10.6 EER ISO Groundwater source water-to-water (cooling mode) < 135,000 Btu/h 59ºF entering water 16.3 EER ISO Ground source brineto-water (cooling mode) < 135,000 Btu/h 77ºF entering water 12.1 EER ISO F db/43 F wb outdoor air 3.3 COP Air Cooled (Heating Mode) Split system and single package 65,000 Btu/h and < 135,000 Btu/h (cooling capacity) 135,000 Btu/h (cooling capacity) 17 F db/15 F wb outdoor air 47 F db/43 F wb outdoor air 2.25 COP 3.2 COP ANSI/AHRI 340/ F db/15 F wb outdoor air 2.05 COP 3-24 Title 24 Part 6 Essentials Nonresidential Modeling

133 CONTINUED: TABLE B UNITARY AND APPLIED HEAT PUMPS, MINIMUM EFFICIENCY REQUIREMENTS Equipment Type Size Category Subcategory or Rating Condition Efficiency a Test Procedure c < 135,000 Btu/h (cooling capacity) 68ºF entering water 4.3 COP Water source (heating mode) ISO ,000 Btu/h and < 240,000 Btu/h 68ºF entering water 2.90 COP Groundwater source (heating mode) < 135,000 Btu/h (cooling capacity) 50ºF entering water 3.7 COP ISO Ground source (heating < 135,000 Btu/h (cooling mode) capacity) 32ºF entering water 3.2 COP ISO Water source water-towater (heating mode) < 135,000 Btu/h (cooling capacity) 68ºF entering water 3.7 COP ISO Groundwater source water-to-water (heating < 135,000 Btu/h (cooling mode) capacity) 50ºF entering water 3.1 COP ISO Ground source brineto-water (heating mode) < 135,000 Btu/h (cooling capacity) 32ºF entering water 2.5 COP ISO a b c IEERs are only applicable to equipment with capacity control as as specified by ANSI/AHRI 340/360 test procedures. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat. Applicable test procedure and reference year are provided under the definitions. TABLE C AIR-COOLED GAS-ENGINE HEAT PUMPS Equipment Type Size Category Subcategory or Rating Condition Efficiency Test Procedure a Air-Cooled Gas-Engine Heat Pump (Cooling Mode) All Capacities 95 F db Outdoor Air 0.60 COP ANSI Z A Air-Cooled Gas-Engine Heat Pump (Heating Mode) All Capacities 47 F db/43 F wb Outdoor Air 0.72 COP ANSI Z A a Applicable test procedure and reference year are provided under the definitions. Title 24 Part 6 Essentials Nonresidential Modeling 3-25

134 Software Inputs That Determine Energy Budget (cont.) Ventilation Mandatory Minimum Ventilation, or greater, is always modeled If Ventilation is input as: Less than Minimum, the Minimum is used in both Proposed and Standard Greater than Minimum, the usersupplied value is used in both Proposed and Standard Increasing ventilation increases HVAC load, which may affect compliance margin Software Inputs That Determine Energy Budget (cont.) Ventilation 120.1(a) All enclosed spaces in a building that are normally used by humans shall be ventilated in accordance with the requirements of this section and the CBC (b) Every space in a building shall be designed to have outdoor air ventilation by either: Natural ventilation Mechanical ventilation 3-26 Title 24 Part 6 Essentials Nonresidential Modeling

135 Software Inputs That Determine Energy Budget (cont.) Ventilation (cont.) Expected Number of Occupants No fixed seating the greater of: Number specified by designer 50% of max. occupants per CBC With fixed seating per CBC Standards (e) 1 Mechanical Ventilation system must be capable of providing outdoor air rate no less than the larger of: Table A 15 cfm per person times the expected number of occupants Software Inputs That Determine Energy Budget (cont.) Ventilation (cont.) Title 24 Part 6 Essentials Nonresidential Modeling 3-27

136 Software Inputs That Determine Energy Budget (cont.) Ventilation (cont.) Software Inputs That Determine Energy Budget (cont.) DHW Nonresidential Buildings Gas Storage Highrise Res /Hotel Motel One per dwelling Gas Instantaneous Central Gas Storage with solar thermal (0.20 or 0.35) 3-28 Title 24 Part 6 Essentials Nonresidential Modeling

137 Check Your Understanding 1. When looking for details on the pump and fan motors, nameplate horsepower is the best option. a. True b. False 2. When modeling ventilation, what value will be required? a. Mandatory minimum ventilation b. Design ventilation c. 15 cfm per person d. The greater value from above 3. Where would you find the description of the standard system baseline? a. Nonresidential ACM Manual b. Title 24 Part 11 c. Title 20 Sections d. Title 9 Title 24 Part 6 Essentials Nonresidential Modeling 3-29

138 Group Discussion What two criteria define the baseline system selection for nonresidential occupancies? What software input dictates the minimum required ventilation? For Residential occupancies (Hotel/Motel and Highrise res), what two criteria define the system selection for the baseline system. Time: 5 minutes 3-30 Title 24 Part 6 Essentials Nonresidential Modeling

139 Reports Reports Interpreting Results: Example Interpreting Results: Example Title 24 Part 6 Essentials Nonresidential Modeling 3-31

140 Interpreting Results: Example Interpreting Results: Example 3-32 Title 24 Part 6 Essentials Nonresidential Modeling

141 Interpreting Results: Example Interpreting Results: Example Title 24 Part 6 Essentials Nonresidential Modeling 3-33

142 DEMO Demonstration Mechanical Modeling 3-34 Title 24 Part 6 Essentials Nonresidential Modeling

143 Recommendations Recommendations HVAC System What Ifs Examples: Sensitivity Runs HVAC System What Ifs What ifs from modeling software can help you prepare for making recommendations What if based on Prescriptive What ifs also are called sensitivity runs What if using features for increased energy efficiency Sizing More efficient equipment VAV box minimum airflows Brake hp rather than nameplate hp Title 24 Part 6 Essentials Nonresidential Modeling 3-35

144 HVAC System Sensitivity Runs Climate Zone 6 Heating Cooling* Fans Pumps Compliance Margin Standard Change in Margin* Proposed % Beyond Measures H2O Cooled Cent. Chiller Efficiency 0.50 kw/ton % 5.2% Variable Speed Pumps % 4.5% Cond. Boiler % 0.6% SP Reduction = 20% reduction in Supply Fan HP % 3.1% Package of Measures % 13.6% * Difference between compliance margin of Proposed Design and Proposed Design with additional measure Mechanical Summary Determine your zones early in the project so you can zone your system for proper modeling Try not to over zone, but certainly don t take shortcuts and under zone Look at how the proposed system compares to the standard to determine possible upgrade opportunities If you don t understand the type of HVAC system, ask questions! 3-36 Title 24 Part 6 Essentials Nonresidential Modeling

145 Activity: Hands-on with Potential Improvements Consider Phocus Plans As Designed and how you might improve the compliance margin. Some potential improvements are listed, but feel free to think outside the box. Select three or four improvements you think will have the most impact. Potential Improvements below are suggestions Model those improvements and record the new compliance margin. Feature As Designed Potential Improvement Roof R-Value R-30 R-38 Walls, Exterior Insulation R-Value R-19 + R-5 Contin. R-21 + R6 Continuous Fenestration U-factor SHGC HVAC (New system will serve entire building) SEER N/A N/A EER AFUE 81% 92% Title 24 Part 6 Essentials Nonresidential Modeling 3-37

146 What measures did you model? What results did you get? Do you think this is typical? Improvement Modeled Result 3-38 Title 24 Part 6 Essentials Nonresidential Modeling

147 Course Conclusion Course Conclusion Welcome Project Assessment Envelope Modeling Lighting Modeling Mechanical Modeling Course Conclusion Course wrap up Post-test Course Evaluation Title 24 Part 6 Essentials Nonresidential Modeling 3-39

148 Course Wrap Up Course Structure Welcome and Introduction Part 1 Part 2 Welcome and Introductions Orientation to v-classroom and Pre-test Project Assessment Envelope Modeling (Doors, Fenestration, and Energy Budget) Envelope Modeling (Interpreting an Envelope Modeling Run) Lighting Modeling (Calculating Baseline Values and Interpreting a Lighting Modeling Run) Part 3 Mechanical Modeling (HVAC Zones and Interpreting a Mechanical Modeling Run) Make Recommendations for a Project Conclusion and Post-test Modeling questions Who ya gonna call? Review the error log file Check the user manual and FAQs If you still need help: EnergyPro Support: support@energysoft.com CBECC-Com Support: CBECC.Com@gmail.com 3-40 Title 24 Part 6 Essentials Nonresidential Modeling