Indiana University Glick Eye Institute. LEED Measurement & Verification Plan

Transcription

1 Indiana University Glick Eye Institute LEED Measurement & Verification Plan April 10,

2 Table of Contents General Introduction... 3 Facility Description... 4 M&V Objectives... 4 M&V Approach/Option... 4 Baseline Documentation... 4 Important Assumptions and Supporting Rationale for Baseline Model... 5 Calibration Procedures... 5 Energy Conservation Measures (ECMs) Implemented... 5 Performance Verification Phase Overview... 5 Data Collection Procedure... 5 Quality Assurance Procedures... 7 Responsible Parties... 7 Analysis Phase... 8 Simulation Calibration... 8 Final M&V Plan Report... 9 Appendix A: Measurement/Meter & Verification Meter Output Form Appendix B: Measured Design Annual Energy Use and Cost Table Appendix C: Proposed Design Annual Energy Use and Cost Table Appendix D: Baseline Design Annual Energy Use and Cost Table Appendix E: equest Modeling Assumptions

3 General Introduction In pursuing LEED TM certification for Indiana University Glick Eye institute (IU GEI), the project team elected to pursue a credit for Measurement and Verification (M&V) under the Energy and Atmosphere Credit 5 based on the USGBC LEED TM 2.2 rating system for new construction. The intent of this credit is to provide for the ongoing accountability of building energy consumption over time. The purpose of the M&V plan is to describe how the data collection and analysis will occur. Pursuant to the International Performance Measurement & Verification Protocol (IPMVP) Volume III: Concepts and Options for Determining Energy Savings in New Construction, April 2003, this M&V plan will be developed and implemented according to the steps outlined in Option D: Calibrated Simulation (Savings Estimation Method 2). This option requires the comparison of actual energy use of the building and its systems with the performance predicted by a calibrated computer model developed from the preliminary computer models created for EA Credit 1. The preliminary computer models were developed with Trace 700 energy analysis software by Affiliated Engineers, Inc. The verification that the building is functioning as designed will be accomplished by measuring the actual energy usage of the IU-GEI building for a period of one year after the building is normally occupied. The actual energy usage will be measured by providing adequate metering and sub-metering of major energy consuming end-use components and trending this energy usage through the campus IONy EEM energy management system. Once this energy usage has been metered/trended for a period of 12 months, the data will be summarized, reviewed, and compared to the original energy model. The original energy model will then be calibrated to match the actual metered energy usage. A formal written report will be submitted. The report will detail results with respect to which systems are functioning as designed and which ones could use improvements in either modeling or in design. The report may also include recommendations for continued monitoring. According to the IPMVP, the M&V plan should include the following elements: 1. Statement of M&V objectives and description of project context of the M&V program. 2. Specification of the M&V option to be used to determine savings. 3. Documentation and specification of the baseline including a listing of all important assumptions and supporting rationale. 4. Specification of simulation calibration procedures, calibration parameters, frequency of measurement of calibration parameters, and calibration accuracy objectives. 5. Documentation of the design intent of pertinent Energy Conservation Measures (ECMs) or energy performance strategies. 6. Expected overall M&V accuracy and anticipated areas of error susceptibility and magnitude of the sensitivity. 7. Statement of the M&V period. 8. Specification of the metering points to be employed. 9. Identification of the operational conditions to be monitored, and methods for monitoring and data collection. 10. Specification for reporting format of the results. 11. Description of quality assurance procedures. 3

4 12. Specification of the information and data that will be available for third party verification, if required. 13. Specification of the methods to be used to deal with missing or lost metered data. 14. Identification of the parties responsible for implementing the plan. Facility Description The IU-GEI in Indianapolis, IN is a new four story, 77,000 square foot instructional and research laboratory building housing staff and research offices, laboratory spaces, and a vivarium space. The office areas are served by a variable air volume air handling unit with demand control ventilation to reduce outside air requirements appropriate to the occupancy levels. The laboratory areas are served by a variable air volume system with enthalpy wheel exhaust air heat recovery and a demand control ventilation system that varies laboratory ventilation based on occupants and lab activity. The facility is served by district energy systems providing the building with chilled water and steam. Per LEED Treatment of District or Campus Thermal Energy in LEED v2 and LEED 2009 Design & Construction, district energy will be accounted for in M&V through the building level meters to monitor the energy supplied from the plant. M&V of upstream DES equipment shall be implemented to the extent necessary to verify the DES performance claimed under EAc1. As required by LEED, this M&V plan does not include any installed meters on upstream district energy equipment but does include metering of the site energy delivered to the building. The full accounting of upstream district energy whole-system energy performance will be provided in the final M&V report. M&V Objectives The objectives of the M&V are: 1. To determine/estimate the energy savings of the facility (at the whole building level) through integration of multiple ECMs in the building and by measuring energy use at main utility meters or with aggregated sub-meters and BAS trending. 2. To assure correct operation of the systems and sub-systems in the building by monitoring the operation status of the equipment. 3. To allow optimization of building systems and sub-systems in the building by adjusting the operation set points of the equipment. M&V Approach/Option This M&V plan will be developed and implemented according to the steps outline in Option D: Calibrated Simulation (Savings Estimation Method 2). Baseline Documentation A computer model was created for EA credit 1 which compares the baseline building design with a proposed building design to demonstrated energy savings derived from ECM s implemented (See Appendices C& D for energy output projected from energy model). For M&V, the proposed model will be considered the baseline documentation and will be compared to actual energy data that is gathered for 12 months after the building is regularly occupied. 4

5 Important Assumptions and Supporting Rationale for Baseline Model See Appendix E for a complete list of modeling assumptions and rationale. Calibration Procedures After data is collected for the required 12-month period, the as-built (Proposed) energy model will be calibrated to reflect the operational conditions of the facility, including weather conditions and occupancy and project schedules over the measurement period. After these parameters have been changed, the model is re-run, and its results compared to the metered postconstruction data from the M&V period. The tolerance goal for calibration of the model will be 5%, and additional modifications to the inputs will be made as necessary and consistent with the installed equipment and building operation. After the calibration of the as-built model, the baseline model will be calibrated and rerun to reflect any parameter changes from the as-built model. Energy Conservation Measures (ECMs) Implemented - Laboratory 6 ACPH occupied / 4 ACPH unoccupied - Laboratory DCV system that monitors TVOC levels and reduces airflow to 4 ACPH occupied / 2 ACPH unoccupied - Enthalpy wheel exhaust heat recovery - Fume hood occupancy sensors that reduce face velocity from 100 fpm to 80 fpm - Exhaust fan staging - CO2 based DCV control for office outside air control - Occupancy sensors, which turn on/off lights based on the occupancy - Improved exterior wall insulation and fenestration SHGC performance Performance Verification Phase Overview This phase of the work involves: 1. Executing on-site data collection plan. 2. Analysis phase which includes: a. Compiling overall building utility consumption and cost information from monthly utility invoices and BAS for 12 months after regular occupancy. b. Analyzing collected data c. Updating/adjusting energy model to collected data. d. Identify operational or design issues that may contribute major differences to original energy model and the final energy model. 3. Submitting a Final M&V Plan Report summarizing the results of findings and corrective actions taken. Data Collection Procedure The Glick Eye Institute will be monitored by a central campus system utilizing PowerLogicy IONy EEM energy management system. The EMS will bring all mechanical, electrical, process and facility systems under a single centralized supervisory control and monitoring system that will support Facility Management and Enterprise Applications, and will monitor the following systems: Heating Hot Water System Process Chilled Water System 5

6 Chilled Water System Return Air Air Handling Unit Process Steam System High Pressure Steam System Lighting Electrical Loads Motor Electrical Loads Accessory Electric Loads Outdoor Weather Conditions IU will trend log data for 12 months for each of the major meters, sub-meters and BAS systems described above. Frequency for each trend log will be in 15 minute intervals averaged over each hour unless additional detail is required. Trend log data will be archived to permanent media on a monthly basis. IU will collect monthly utility bills and will review monthly data collection and utility bills to confirm data is within expected results. If collected data is not within expected results, the owner will investigate the instrumentation and/or trend log setups and make corrective actions as necessary. The data collection phase duration may be extended if corrective measures are required. A project specific approach has been developed to ensure that proper measurements will be taken. All points to be metered or measured, how the data is to be collected, and how often this shall occur is summarized in the following table (Table 1). Table 1: Metered Points and Specifications of M&V Incoming Utilities Plan Verification Items/Systems Chilled Water cooling load Heating Load Metering/ Monitoring Devices * Water flow meter and temperature sensors just before and after chilled water primary secondary pumps and the return from coil connections * Water flow meter and temperature on return and supply lines. Measured Data Device Location Remarks Chilled water flow GPM), chilled water supply and return temperatures ( o F) Heating Hot Water flow, supply and return temperatures ( o F) Mechanical Room (Drawing M-700 series) Mechanical Room (Drawing M-700 series) Refer to Drawing I-712 for sensor locations and ION points. Refer to Drawings I-714 for sensor locations and ION points. Process Chilled Water Load * Water flow meter and temperature on return and supply lines. Process Water flow, supply and return temperatures ( o F) Mechanical Room (Drawing M-700 series) Refer to Drawings I-713 for sensor locations and ION points. 6

7 Incoming Utilities Plan Verification Items/Systems Domestic Hot Water Load Metering/ Monitoring Devices Calculated from total steam use minus process steam and heating hot water use Measured Data Device Location Remarks Refer to High Pressure Steam, Heating Hot Water and Process Steam systems NA NA Process Steam Load * Steam Flow meter and temperature, Pressure transmitters. Process steam flow, supply temperatures and pressure. Mechanical Room (Drawing M-700 series) Refer to Drawings I-711 for sensor locations and ION points. High Pressure Steam Load * Steam Flow meter and temperature, Pressure transmitters./ High Pressure steam flow, supply temperature and pressure. Mechanical Room (Drawing M-700 series) Refer to Drawings I-711 for sensor locations and ION points. HVAC Motors- Electric Load Process (plug) energy Electric Load Indoor Lighting Electric Load Motor VFD monitored by BAS points and data recovered by EMS for energy consumption PMS monitors all distribution panels. Subtractive metering required to separate plug load from lighting. PMS monitors all distribution panels while LICS controls lighting Kilowatt-hours by month and kilowatt demand rate for each billing period Kilowatt-hours by month and kilowatt demand rate for each billing period Kilowatt-hours by month and kilowatt demand rate for each billing period Multiple electrical rooms Multiple electrical rooms BAS to download VFD data via modbus to BACnet interface at each panel. EMS to retrieve PMS data for power consumption EMS to retrieve LICS and PMS data for power consumption Quality Assurance Procedures Ongoing quality assurance procedures for the metered run times of equipment include a monthly review of the data to see if it is reasonable and corresponds to anticipated values. Raw data files will be stored separately and made available for third party review upon request. In the case that some data are missing, a check for a valid reason for missing data will be made. If the data is truly missing, then operating hours for the period with missing data will be derived from data from a similar period. Sources of data used to make up for missing data will be clearly identified and will be described in the annual reports. Responsible Parties Activity M&V plan development Primary responsibility Indiana University and Affiliated Engineers, Inc. 7

8 M&V plan Review and approval M&V implementation in EMS Post construction utility data collection and meter trend logging Data Analysis and Energy Model Calibration M&V report Corrective action (if needed) Indiana University Indiana University and Affiliated Engineers, Inc. Indiana University TBD TBD Indiana University The controls contractor will complete an installation checklist and calibrate all instrumentation to known references. Commissioning agent will confirm that systems are installed per contract documentation and that all instrumentation calibration check lists have been documented. Commissioning report will document the installation of systems. Commissioning agent will spot check instrumentation calibration work to ensure that work has been completed accurately. Commissioning agent has the right to request corrective calibration work if work is found not be within design tolerances. Testing and balancing agency will confirm that ventilation systems and HVAC water systems are adjusted to within 10 percent of design values. Results will be documented in testing and balancing report per specification Section Water Systems Test Adjust Balance and per Section Air Systems Test Adjust Balance. Commissioning agent will spot check testing and balancing work to ensure that work has been completed accurately. Commissioning agent has the right to request corrective balance work if work is found not be within design tolerances. Design engineer will review all testing and balancing reports. Analysis Phase - Compile overall building utility consumption and cost information from monthly utility cost sheets for 12 months after occupancy. - Analyze utility data and correlate utility usage to sub-meter data and categories. - Update Baseline and As-Built energy models. - Calibrate As-Built energy model to sub-meter and utility data. - Adjust Baseline model to reflect any corresponding changes to the As-Built calibrated model. - Identify operational or design issues that may contribute to major variations between As- Built and Proposed Design energy models. - Calculate estimated energy use and cost savings based on calibrated Baseline and As- Built models. If there are major deviations from the energy model, the design engineer may suggest further investigations, or corrective actions to operational procedures or to the design. Simulation Calibration Pursuant to Option D of the IPMVP, calibration of the as-built energy model must be made. Most adjustment will include modification of assumption of schedules and occupancies or parameters such as equipment performance maps. Calibration will also include the measured weather data that is collected for the same period as the energy collection period. After the as-built energy model has been satisfactorily calibrated to include changes in parameters and weather data, the model should be re-run. The same changes should be incorporated into the Baseline model, to the extent that the parameters are applicable. 8

9 Savings estimations follow Method 2 as outlined in the IPMVP and required by LEED NC 2.2, which states that savings are calculated by subtracting the metered post-construction energy use from the energy use of the calibrated Baseline Model. Final M&V Plan Report A formal written report will summarize the following: Measured utility and energy end use data along with any missing data and the process used to interpolate or fill in missing data. Description of Baseline building input adjustments. Description of As-Built energy model calibration steps. Weather data used for calibration. Adjusted energy savings based on calibrated model results. Description of perceived operational or functional opportunities affecting building energy use. Results with respect to which systems are functioning as designed and which ones could use improvements in either modeling or in design. Recommendations for continued monitoring. 9

10 Appendix A: Measurement/Meter & Verification Meter Output Form Time Outdoor Conditions Utility Meter Sub-Meters BAS DB WB Heating Process Process CHW Temp Temp RH Electricity CHW Steam HW CHW Steam DHW Lighting Plug Fans Pumps Month Day Year Hour (deg F) (deg F) (%) (kwh) (Btuh) (Btuh) (Btuh) (Btuh) (Btuh) (Btuh) (kwh) (kwh) (kwh) (kwh) (kwh) HW Pumps 10

11 Appendix B: Measured Design Annual Energy Use and Cost Table Month Utility Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total Electricity Consumption (kwh) Demand (kw) Cost ($) Purchased Steam Consumption (MMBtu) Demand (Btu/h) Cost ($) Purchased Chilled Water Consumption (MMBtu) Demand (Btu/h) Cost ($) 11

12 Appendix C: Proposed Design Annual Energy Use and Cost Table Month Utility Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total Electricity Consumption (kwh) 116, , , , , , , , , , , ,180 1,419,130 Demand (kw) Cost ($) $5,839 $5,317 $6,089 $5,701 $6,142 $6,094 $6,071 $6,359 $5,861 $6,065 $5,709 $5,709 $70,956 Purchased Steam Consumption (MMBtu) ,062.2 Demand (Btu/h) 1,737,000 1,949,000 1,588, , , , , , , ,000 1,033,000 1,901,000 1,949,000 Cost ($) $35,778 $28,193 $16,182 $9,095 $6,706 $5,787 $5,515 $6,148 $6,383 $9,832 $15,927 $30,987 $176,533 Purchased Chilled Water Consumption (MMBtu) ,823.8 Demand (Btu/h) 215,000 1,567,000 2,385,000 2,642,000 2,713,000 3,070,000 35,950,000 3,580,000 3,254,000 2,897,000 2,186, ,000 3,595,000 Cost ($) $329 $349 $801 $1,079 $1,948 $2,727 $2,947 $2,897 $2,017 $1,122 $533 $337 $17,086 12

13 Appendix D: Baseline Design Annual Energy Use and Cost Table Month Utility Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total Electricity Consumption (kwh) 122, , , , , , , , , , , ,928 1,511,070 Demand (kw) Cost ($) $6,143 $5,593 $6,409 $6,063 $6,601 $6,605 $6,599 $6,851 $6,247 $6,349 $5,956 $6,004 $75,419 Purchased Steam Consumption (MMBtu) ,645.1 Demand (Btu/h) 2,370,000 2,540,000 1,978,000 1,232, , , , , ,000 1,260,000 1,708,000 2,655,000 2,669,000 Cost ($) $59,946 $49,405 $25,356 $13,543 $8,566 $6,093 $5,555 $6,394 $7,378 $13,104 $24,980 $52,250 $272,572 Purchased Chilled Water Consumption (MMBtu) ,700.3 Demand (Btu/h) 320,000 1,566,000 2,298,000 2,761,000 2,938,000 3,492,000 4,306,000 4,088,000 3,575,000 2,819,000 1,830, ,000 4,306,000 Cost ($) $6 $94 $593 $1,015 $2,029 $2,918 $3,201 $3,064 $2,023 $999 $268 $16 $16,227 13

14 Appendix E: equest Modeling Assumptions Indiana University Glick Eye Institute LEED EAc1 Analysis Summary of Assumptions to be used in Analysis Trane Trace700 model will be used in the analysis. Model will be built according to guidelines in the following document: ASHRAE Standard and information provided by Ratio & AEI. Model is calculated in Full Year mode. Summary of Assumptions Final LEED Model Assumptions Item Proposed Design Inputs Baseline Design Inputs ENVELOPE Weather Data (Same as Baseline) Zone 5A Indianapolis International Airport TMY3 weather data (as per Table B-1 of ASHRAE ) Building Shape 68,338 net sf Model does not include unconditioned mechanical shafts or elevator hoist way. See Trace LEED Summary report for space type summary. (As per Application for Design Release Architectural Drawings, 8/13/2009) (Same as Proposed) % of Windows 45% Window to Wall Ratio (As per Application for Design Release Architectural Drawings, 8/13/2009) 40% Window to Wall Ratio, uniformly distributed across all four orientations. (As per Table G3.1, section 5c of ASHRAE ) Glass selection (vertical) Summer Daytime U-Value: Center of Glass: U = 0.26 Full Frame Assembly: U = 0.43 VLT = 70%, Full Frame U-Value = 0.57 SHGC S,E,W = 0.39, SC S,E,W = 0.45 SHGC North = 0.49, SC North =

15 Glass selection (skylight) Exterior Shade Walls SHGC = 0.38 Shading Coefficient = 0.44 NONE South Curtain Wall Overhangs: 2 projection out, 0 above window Brick Walls: -Brick -Airspace -2 Rigid Ext Polystyrene Insulation (R-6.67/inch) -0.5 Exterior Sheathing -6 Metal Frame -5/8 Gypsum Board U , R-117 Precast Concrete Walls: -Precast Concrete -Airspace -2.5 Rigid Ext Polystyrene Insulation (R-6.67/inch) -3-5/8 Metal Frame -5/8 Gypsum Board U , R-19 (per sheet A-320 and Architectural Thermal Insulation Spec) (as per Table of ASHRAE ) NONE NONE (As per Table G3.1, section 5c of ASHRAE ) Steel framed, R-13 Cavity Insulation w/r3.8 ci U-Value = assembly maximum (As per Table of ASHRAE ) Below Grade 12 HW Concrete, 2 Rigid Walls Insulation, U= Roofs U-Value = 0.038; 6 Concrete, 4 Avg Thickness Rigid Polyisocyanurate Insulation entirely above deck, R-24 insulation Penthouse: U-Value = 0.038; Metal Deck, 4 Avg Thickness Rigid Polyisocyanurate Insulation entirely above deck, R-24 insulation 12 HW Concrete, U= 0.59, C=1.140 No Insulation U-Value = assembly maximum, R-15ci Insulation above metal decking (As per Table of ASHRAE ) 15

16 (per Architect s design) ELECTRICAL SYSTEMS AND PROCESS LOADS Interior Lighting Average: 1.15 W/sf System Space-by-Space Method: Office: 1.1 W/sf Conference: 1.3 W/sf Classroom: 1.1 W/sf Lounge: 1.3 W/sf Laboratory: 1.4 W/sf Restrooms: 0.8 W/sf Locker Rooms: 1.3 W/sf Corridor: 0.6 W/sf Exam: 1.1 W/sf Operating Room: 2.0 W/sf Medical Supply: 1.2 W/sf Electrical/Mechanical: 0.7 W/sf Retail: 1.3 W/sf Storage: 1.1 W/sf Average: 1.17 W/sf Space-by-Space Method as per Table of ASHRAE Std : Office: 1.1 W/sf Conference: 1.3 W/sf Classroom: 1.4 W/sf Lounge: 1.2 W/sf Laboratory: 1.4 W/sf Restrooms: 0.9 W/sf Locker Rooms: 0.6 W/sf Corridor: 0.5 W/sf Exam: 1.5 W/sf Operating Room: 2.2 W/sf Medical Supply: 1.4 W/sf Electrical/Mechanical: 1.5 W/sf Retail: 1.7 W/sf Storage: 0.8 W/sf Lighting Occupant Sensor Controls Lighting Daylight Controls Occupancy Sensors in all spaces except corridors and stairwells. Occupancy sensors were modeled by reducing the lighting utilization schedules by 10% per ASHRAE 90.1 Table G3.2. NONE (As per Table of ASHRAE Standard ) As per section of ASHRAE , Occupancy Sensors are required in: -Classrooms -Conference rooms -Break rooms All other spaces do not require occupancy sensors Occupancy sensors were modeled by reducing the lighting utilization schedules by 10% per ASHRAE 90.1 Table G3.2. NONE (As per Table G3.1 of ASHRAE Standard ) 16

17 Process Lighting NONE NONE Exterior Lighting Power (Tradable Surfaces) Tradable Surfaces: 1928 Watts total. Tradable Surfaces: per ASHRAE 90.1 Section Watts total allowed, 1928 Watts modeled to match Proposed Exterior Lighting Power (Non-Tradable Surfaces) Receptacle and Other Miscellaneous Loads (Peak) No non-tradable surfaces with exterior lighting. As per Basis of Design: Offices: 2.0 W/sf Conference Rooms: 2.0 W/sf Classrooms: 1.5 W/sf Laboratory: 8.0 W/sf Lab Support Spaces 10.0 W/sf: Computer Rooms: 45 W/sf Exam, Treatment Rooms: 1.0 W/sf Tissue Culture Rooms: 18.0 W/sf Sterilizing and Supply: 15.0 W/sf Procedure Rooms: 10.0 W/sf Staff Lounge: 3.0 W/sf Locker Rooms: 0 W/sf Corridor: 0 W/sf Storage Rooms: 0 W/sf Electrical Rooms: 27,000 Btu/hr Elevator Equip. Room: 40,000 Btu/hr IT Rooms: 20,000 Btu/hr IDF: 15 W/sf No non-tradable surfaces with exterior lighting. (Same as Proposed) MECHANICAL AND PLUMBING SYSTEMS HVAC systems: AHU-1: VAV with reheat (floors 1 and 2) AHU-2: VAV w/ Reheat (Floor 3) AHU-3: System 7 VAV w/ Reheat (Shell Floor 4) Fan Coil Units: CAV (high-density heat load spaces) BD 1 st Flr VAV: System 7 BD 2 nd Flr VAV: System 7 BD 3 rd Flr VAV: System 7 BD 4 th Flr VAV: System 7 BD Sys 3 FCU: System 3 (fan coil) BD Sys 7: System 7 VAV system used to meet fully 17

18 Outside air PD Sys 7: VAV w/reheat serving spaces intended to be heating only in order to meet fully conditioned requirement from ASHRAE Appendix G Table (b) Purchased steam heating Purchased chilled water cooling (Same as Baseline, except lab and lab support spaces) Lab and Lab Support: VAV airflow, minimum ventilation rates: 6 ACH occupied, 4 ACH unoccupied conditioned requirement, replaces Cabinet Unit Heaters, Unit Heaters, and Penthouse Ventilation Fan Purchased steam heating Purchased chilled water cooling (As per Required Treatment of District Thermal Energy in LEED-NC version 2.2 and LEED for Schools, version 2.0 August 13, 2010, and Tables G3.1.1A and G3.1.1B of ASHRAE ) Office Areas, Conference Rooms: 5 cfm/person cfm/sf, Classrooms: 10 cfm/person cfm/sf Corridors: 0 cfm/person cfm/sf, Storage Rooms: 0 cfm/person cfm/sf, Retail: 7.5 cfm/person cfm/sf (As per Table 6-1 of ASHRAE Standard ) Supply Air Temperature Reset NONE Patient rooms: 25 cfm/person + 0 cfm/sf Medical Procedure: 15 cfm/person + 0 cfm/sf (As per Table E-1 of ASHRAE Standard , Appendix E) (As per occupied proposed ventilation rate) Cooling: Reset higher by 5 o F under minimum load, for medical office building spaces and lab spaces. 18

19 Demand Controlled Ventilation Economizer Supply Fans CO2 Monitor: Space Sensors located in Classrooms and Waiting Areas Return duct sensor on AHU-1 to maintain overall CO2 levels below 500 ppm TVOC: Laboratory System includes TVOC monitoring and reduces minimum ventilation setpoint. AHU-1: Dry-bulb: 65 o F High-Limit Shutoff AHU-3 System 7: Dry-bulb: 70 o F High-Limit Shutoff AHU-1: 35,000 CFM 7 TSP, 70% fan efficiency, 95% belt drive efficiency, 54.7 BHP, kw/cfm motor output power, 95% motor efficiency. AHU-2: 26,000 cfm, 9 TSP, 74% fan efficiency, 95% belt drive efficiency, (2) 24.9 BHP, kw/cfm motor output (As per G of ASHRAE Addendum A) NONE: no spaces meet occupancy threshold of >100 people/1000 SF set by ASHRAE Section BD 1 st Flr VAV: Dry-bulb: 70 o F High-Limit Shutoff BD 2 nd Flr VAV: Dry-bulb: 70 o F High-Limit Shutoff BD 3 rd Flr VAV: 100% Exhaust BD 4 th Flr VAV: Dry-bulb: 70 o F High-Limit Shutoff BD Sys 3 FCUs: Dry-bulb: 70 o F High-Limit Shutoff BD Sys 7: Dry-bulb: 70 o F High- Limit Shutoff (As per Tables G A,B,C of ASHRAE ) BD 1 st Flr VAV: kw/cfm motor output power, 91% motor efficiency BD 2 nd Flr VAV: kw/cfm motor output power, 91% motor efficiency BD 3 rd Flr VAV: kw/cfm motor output power, 92.4% motor efficiency 19

20 power, 93.6% motor efficiency. AHU-3 System 7: 27,000 cfm, kw/cfm motor output power, 93% motor efficiency Fan coils (FCU 1-10): 325-4,000 cfm, 0.35 TSP, 25% fan efficiency, 100% direct drive efficiency, kw/cfm motor output power, 85% motor efficiency. PD Sys 7: VAV system used to meet fully conditioned requirement, replaces Cabinet Unit Heaters, Unit Heaters, and Penthouse Ventilation Fan kw/cfm, 92.4% motor efficiency BD 4 th Flr VAV: kw/cfm motor output power, 92.4% motor efficiency BD Sys 3 FCU: kw/cfm motor output power, 92.4% motor efficiency BD Sys 7: VAV system used to meet fully conditioned requirement, replaces Cabinet Unit Heaters, Unit Heaters, and Penthouse Ventilation Fan kw/cfm, 91% motor efficiency (As per G , Table G , and Table 10.8 of ASHRAE and Addendum ac) Return Fan RF-1: 30,000 cfm, 1.5 TSP, 70% fan efficiency, 95% belt drive efficiency, 14.5 BHP, kw/cfm motor output power, 93% motor efficiency. BD 1 st Flr RF: 5.0 BHP, kw/cfm motor output power, 87.5% motor efficiency BD 2 nd Flr RF: 5.0 BHP, kw/cfm motor output power, 87.5% motor efficiency Exhaust Fans Lab fume exhaust fans (3 rd Flr): EF-1 and EF-2; 17,350 cfm each, 4.0 TSP, 70% fan efficiency, 100% direct drive efficiency, 20.8 BHP, kw/cfm motor output power 93.6% motor efficiency EF-5 (exempt): kw/cfm EF-6: (exempt): kw/cfm EF-7: Not modeled (using PD Sys 7 Htg Only VAV to model penthouse) (As per G , Table G , and Table 10.8 of ASHRAE and Addendum ac) BD 3 rd Flr VAV (System Lab Exhaust): kw/cfm motor output power, 93% motor efficiency BD 4 th Flr VAV (System Exhaust): kw/cfm motor output power, 93% motor efficiency EF-5 (exempt): kw/cfm EF-6: (exempt): kw/cfm EF-7: Not modeled (using BD Sys 7 Htg Only VAV to model penthouse) (As per G , Table G , 20

21 Energy Recovery AHU-2 (Lab Systems Only): Enthalpy Wheel: Effectiveness: 79% Sensible, 73% Latent and Table 10.8 of ASHRAE and Addendum ac) None required for Lab Systems modeled as VAV w/50% turndown per CIR 08/13/2007 Cooling Equipment CHW Design CHW pumps Heating Equipment Purchased Chilled Water: 1061 tons, based on design cooling coil capacity Supply: 42 o F Return: 57 o F Delta-T: 15 o F Variable speed, 93% premium efficiency motor, 20 HP 21.5 W/gpm full load consumption. Purchased Steam: 13,422 MBH based on design heating coil capacities Purchased Chilled Water: 565 tons based on 115% Cooling coil oversizing (As per Required Treatment of District Thermal Energy in LEED version 2.0) Supply: 44 o F Return: 56 o F Delta-T: 12 o F Constant speed, riding pump curve per ASHRAE G for <120,000 SF W/gpm full load consumption 22W/gpm as per ASHRAE section G not used because this number is based on pumping through a chiller and distribution piping. The pumps in this model are receiving campus chilled water and pumping through distribution system only. The full load consumption is based on 50 ft wc pressure drop, 60% efficiency, and 94.5% motor efficiency as opposed to 70 ft head and 60% efficiency per ASHRAE 90.1 Table A Note 5. Purchased Steam: 6,221 MBH based on 125% oversizing at heating coils (As per Required Treatment of District Thermal Energy in LEED version 2.0) 21

22 HW Design Temp: 180 o F supply 160 o F return Reset: YES Temp: 180 o F supply 130 o F return Reset: YES (As per G of ASHRAE ) HW Reset HW Pumps VAV Min Flow 180 o F at 15 o F OA Temp 120 o F at 15 o F OA Temp Variable speed, 92.4% premium efficiency motor, 15HP 18.8 W/gpm full load consumption. Minimum Ventilation: Office and Non-lab Spaces: 30% design flow Lab and Lab Support: 6 ACH/4ACH for occupied/unoccupied Toilets: 10 ACH 180 o F at 20 o F OA Temp 150 o F at 50 o F OA Temp Ramped linearly in between (As per G of ASHRAE ) Constant speed, riding pump curve per ASHRAE G for <120,000 SF W/gpm full load consumption 19W/gpm as per ASHRAE section G not used because this number is based on pumping through a boiler and distribution piping. The pumps in this model are pumping through distribution system only. The full load consumption is based on 50 ft wc pressure drop, 60% efficiency an 91% motor efficiency as opposed to 70 ft head and 60% efficiency per ASHRAE 90.1 Table A Note 6. Minimum Ventilation: Office and Non-lab Spaces: 0.4 cfm/sf Lab and Lab Support: 100%/50% of cooling design flow for occupied/unoccupied Toilets: 10 ACH (As per Section G of ASHRAE Standard and ISU Std) 22

23 Domestic HW Heater Schedules Occupancy Purchased Steam 600 MBtu/hr peak heating load Offices: Building Occupancy: 8am-7pm M-F Lighting: 90% load 8am-7pm M-F 10% load during unoccupied hours Miscellaneous Equipment: 100% load 8am-7pm M-F 25% load during unoccupied hours Labs: Building Occupancy: 9am-7pm M-F Lighting: Similar to Labs 21 standard lighting schedule Miscellaneous Equipment: Labs 21 standard equipment schedule Classroom: 28 sf/person Computer Rooms: 0 people Conference Rooms: 20 sf/person Corridor: 1 person Electrical Room: 0 people Elevator Equipment Room: 0 people Exam: 2 people IDF: 0 people IT Room: 0 people Laboratory: 200 sf/person Lab Support: 200 sf/person Locker: 100 sf/person Mechanical Room: 0 people Purchased Steam 600 MBtu/hr peak heating load (As per Required Treatment of District Thermal Energy in LEED version 2.0) (Same as Proposed, except with no occupancy sensors for spaces that are not classrooms, conference rooms, or break rooms. See Lighting Occupant Sensor Controls section above for description of how occupancy sensors are modeled.) (Same as Proposed) 23

24 Utility Rate Structures Medication Room: 100 sf/person Office: 200 sf/person Procedure Room: 4 people Retail: 33.3 sf/person Staff Lounge: 100 sf/person Storage Room: 0 people Supply & Sterilization: 0 people Tissue Culture: 4 people Toilet Room: 100 sf/person (As per Table 6-1 of ASHRAE ) Electricity (Flat Rate): $0.05/kWh Virtual District Energy System Rates: District Steam: $16.62/therm $0.1662/MBtu District Chilled Water: $0.3542/therm $0.0425/ton-hr (See Glick District Energy Rates.pdf for calculations) (Virtual District Energy System Rates calculated as per USGBC District Thermal Guideline v2.0, August 13, 2010) (Same as Proposed) 24