THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA

Transcription

1 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA Moderator: John R. Dale, FAIA, LEED AP, Harley Ellis Devereaux (HED) Panelists: Ralph DiNola, Executive Director, New Buildings Institute Gerard Lee, AIA, LEED AP BD+C Project Architect, HED Peter Turnbull, Principal Program Manager, ZNE Projects, PG&E Timothy DeWitt, RA, Principal Architect, Rainforth Grau Architects Bharat Patel, PE, LEED AP, Senior Vice President, Engineering, HED Dr. David El Fattal, Vice President of Business Services, Cerritos Community College District Green California Schools and Community Colleges Summit 2014

2 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA AGENDA: 1. Introduction to Panelists 5 minutes 2. Overview, Background and Status of ZNE in California where are the big opportunities? 12 minutes 3. A Recent Success Story. West Berkeley Library proof that a small institutional building on an urban site can operate at ZNE successfully: 12 minutes 4. Audience Participation: Who else is working on ZNE? 7 minutes 5. Lessons Learned for Grid Neutral and ZNE on Multi-zone Classroom Buildings: LODI Green Tech Academy 12 minutes 6. A Holistic Approach to developing a Sustainable Energy Master Plan for a Multi-Building Campus: Cerritos College 12 minutes Q and A Session: 15 minutes Green California Schools and Community Colleges Summit 2014

3 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA 1. Introduction to Panelists Green California Schools and Community Colleges Summit 2014

4 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA 2. Overview, Background and Status of ZNE in California where are the big opportunities? Ralph DiNola Green California Schools and Community Colleges Summit 2014

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38 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA 3. A Recent Success Story. West Berkeley Library proof that a small institutional building on an urban site can operate at ZNE successfully: Gerard Lee and Peter Turnball Green California Schools and Community Colleges Summit 2014

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40 City of Berkeley Climate Action Plan 2009 & Measure FF Berkeley Public Library Bond 2009 Climate Action Plan Adopted 33% CO2 reduction below 2000 level by % Reduction by 2050 LEED Silver for all construction and renovation $26M bond in 2008 for branch library improvements 40

41 1 mile 20 min. walk 1/2 mile 10 min. walk West Berkeley Library Site Location

42 Every hour, the sun radiates more energy onto the earth than the entire human population uses in one whole year. Solar Access Optimum Roof Height 42

43 Renewable On-site Energy Supply 43

44 Floor Plan Overcast Sky JUNE 21 Analysis Grid Clear 1200 Falloffs Value Range: fc Day Lighting Design Tools Daysim- annual daylighting analysis with weather data Radiance illuminance maps based on specific times Use the right tool Building Section Daysim was more user friendly in early design phases Daylight Modeling 44

45 Natural Ventilation Computational Fluid Dynamics (CFD) Studies Fluent (Ansys Airpak) Various ceiling configurations and shapes were analyzed CFD analysis indicated - horizontal ceiling plane works as well as a sloped ceiling Comfort Verification Studies Additional CFD analysis was done during late design for verification purposes Comfort verification studies by Capital Engineering/ SEED Inc. Natural Ventilation Analysis 45

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48 Title 24 modeled with EnergyPro Whole Building Simulation Energy Modeled with DesignBuilder EUI Baseline Building (T24) 35 Reduce building energy consumption before designing for renewables Whole Building Energy Analysis 48

49 Public Procurement Lessons Learned Public Low Bid Requirement Limited Number of GCs with ZNE Experience Collaborative Process PM/CM/PA/Builder/ Client Relationship is Crucial Educate, Collaborate and Develop Trust COMMUNICATION! Public Low Bid 49

50 97.1% FSC Wood content Coordination Quick turn around on RFIs/ Submittals Be Flexible Work as a Team to Identify Savings and Opportunities Concepts that apply to all projects 50

51 Unseen But Important -Roof BOD -Performance requirements PV Sub -Install Off the Rack Systems Structural issues! Resolve Issues, Find Solutions and be ZNE Aware Integrated Designs Are Not Friendly Towards Field Changes PV emergency shut off -within 10 of Main Switch Gear (MSB) Lessons In The Field 51

52 PV & Solar Thermal Do not exceed zoning height limitations Low slope roofs HED detailed for stanchions. Standard wood curbs preferred by subs can impede flow and affect collector plate angles Stanchions allow for future technology, reroofing, ease of maintenance. Lessons In The Field 52

53 Radiant Slab Triple Wall Radiant Tubing 4 of Radiant Concrete Slab over 2 of Rigid Insulation. 6 Curbs. Curb cutouts -manifolds & construction accesscherry pickers. Check manifold design & tubing layout for proper zoning Template Layout/ Protection plates -avoid punctures Educating the other subcontractors is KEY Radiant Floors 53

54 PV & Solar Thermal Learning curve Not your standard electrical/ mechanical room Plan for issues in the field where Design Build systems are concerned Lessons In The Field 54

55 Natural Ventilation Interior of chimney has to be lined with acoustic board Provide for access to service and maintain Patrons standard comment is How quiet the building is! CFD studies were worth it. Minimal comfort issues most addressed during commissioning Wind Chimney 55

56 Natural Ventilation Operable windows are tied to BMS Some manual operable windows provided at staff offices Window actuator looks like a handle one operable window at standard height broken by patron Runtal missed at one automatic window Wind Chimney 56

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58 Runtal Radiators Provides preheating of fresh air in the winter Long lead time 6-8 weeks Concerns about appearance and perception Standard Runtal heights are limited HED worked with fabricator to increase fin spacing & revised pressure and flow design Runtal Radiators 58

59 Skylights Both fixed and operable Operable skylight controls were difficult to get to communicate with BMS Value engineering exercise had removed integral blinds- added back during construction Skylight blinds have solar cell- self powered and automatic Day Light 59

60 Daylight Harvesting Daylight Sensors (1) at skylights & (1) at entry Tied to lighting panel and controls lights -dimmable vs on/off Dimmable lights need delay Shades affect sensors Commissioning is necessary to trouble shoot lighting Day Light & Lighting Controls 60

61 Quality of Light 61

62 High Performance Rain Screen System 14 Week Lead time from Switzerland No comparable local product HED arranged for contractor to obtain manufacturer certification HED revised details to reduce steel furring use by 50% Reduced material use, errors, labor and possibility for breakage during installation Cement Composite Panel Rain Screen 62

63 3x8 wood 24 on center Wood is thermally efficient vs. steel stud 7 ¼ of wall cavity filled with rock wool insulation = R30 2 layers of Roxul in roof/ ceiling =R41 5 week lead time from Canada Good acoustics, high thermal & hygrothermal performance, fire protection, moisture & mold resistant and will not sag Roxul Rock Wool Insulation 63

64 Costs Comparisons 64

65 Jan- October 24, ,778kWh Energy Tracking Building appears to be on track for ZNE No Flow Meters Trending Data 65

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69 Extensive Bioclimatic Studies & Energy Modeling -Critical Anticipate Changes in Technology Design & Define Performance Criteria for Design/Build Systems PV/ Solar Educate Everyone! Commissioning Data, Performance, Metrics Stay the Course. Key Lessons 69

70 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA 4. Audience Participation: Who else is working ZNE? Green California Schools and Community Colleges Summit 2014

71 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA 5. Lessons Learned for Grid Neutral and ZNE on Multi-zone Classroom Buildings: LODI Green Tech Academy Tim DeWitt Green California Schools and Community Colleges Summit 2014

72 STRATEGIES FOR ZNE

73 INTEGRATED DESIGN PROCESS ACHIEVING SHARED GOALS DEMONSTRATE THE POSSIBLE STUDENT OWNERSHIP THE DISTRICT S CHAMPION

74 INTEGRATING ZNE REDUCING PLUG LOAD SIGNIFICANT LOAD REDUCTIONS AND SYSTEM EFFICIENCIES ONSITE ENERGY GENERATION Source: B. Griffith et al., Assessment of the Technical Potential for Achieving Net-Zero-Energy Buildings ORIENT THE BUILDING FOR OPTIMAL DAYLIGHTING AND PASSIVE SOLAR HEATING OR COOLING

75 CREATING A CULTURE

76 Every ZNE project depends on the full participation of its occupants

77 EFFECTS OF CHOICE

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79 Who would say: I have never worked on a ZNE building project? Do what you can within the scope you re given

80 THE NEW DESIGN PARADIGM THE INTEGRATED DESIGN PROCESS UNDERSTANDING CURRICULUM DELIVERING 21 ST CENTURY LEARNING ENVIRONMENTS STUDENT ENGAGEMENT WITH BUILDING SYSTEMS

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83 D E S I G N S L C

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85 BUILDING AS LABORATORY DEMONSTRATION GARDENS/ GREEN ROOF BREATHING BUILDING SYSTEMS DAYLIGHTING SYSTEMS COMPARATIVE PV SYSTEMS VISABLE CAMPUS ECO SYSTEM INDOOR OUTDOOR MONITORING DISPLAYS THE ENGAGEMENT OF BUILDING OCCUPANTS

86 DEMONSTRATION TECHNOLOGY

87 DAYLIGHTING SOUTH FACING GLAZING CLASSROOM SUN ANGLE 11:00AM CLASSROOM

88 DAYLIGHTING

89 RELEARNING TECHNOLOGIES

90 BREATHING BUILDING BREATHING BUILDING SYSTEMS

91 BREATHING BUILDING

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93 INTEGRATED HVAC

94 MODES OF OPERATION

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96 BEYOND T-24

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99 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA 6. A Holistic Approach to developing a Sustainable Energy Master Plan for a Multi- Building Campus: Cerritos College Bharat Patel and David El Fattal Green California Schools and Community Colleges Summit 2014

100 CERRITOS COLLEGE INTEGRATED ENERGY MASTER PLAN

101 Cerritos College Campus

102 INTEGRATED ENERGY MASTER PLAN / CERRITOS COLLEGE Quick Facts Founded in ,000+ students (FTES) 135 acres 41 buildings, I million gsf $560 million for campus modernization and new construction $2.1 million annual cost of energy

103 INTEGRATED ENERGY MASTER PLAN / CERRITOS COLLEGE Green Cerritos College Environmental Stewardship Sustainability Initiatives Board Policy 3580 Environmental Sustainability Cerritos College Sustainability Plan Greenhouse Gas Reductions Energy Savings Water Conservation Green Education USGBC s LEED standard for projects above $5 million CCC/IOU Partnership first-of-akind Integrated Energy Master Plan

104 INTEGRATED ENERGY MASTER PLAN / CERRITOS COLLEGE Capital Costs and Operational Costs

105 Cerritos College Campus

106 INTEGRATED ENERGY MASTER PLAN / CERRITOS COLLEGE Existing Energy Consumption By Building

107 INTEGRATED ENERGY MASTER PLAN / CERRITOS COLLEGE Building Consumption by Phase

108 Existing Energy Consumption By Building

109 Comparison of Cerritos College EUI, CBECS and Goal EUI

110 Green House Gas Emissions

111 Green House Gas Emissions Equivalents 1263 passenger vehicles 14,285,714 million miles driven passenger vehicle 675,143 gals of gasoline consumed 3222 tons of coal being burned

112 New Buildings Strategies New Building and major renovation Design Guidelines for all disciplines: Architectural and Engineering Passive methods include Orientation External shading Hybrid Natural ventilation Massing Dynamic Exceed Title 24 by 20% LEED standards

113 Existing Building Energy Efficiencies Energy Management Systems (EMS)

114 Demand Response Energy Efficiency Conservation Demand Response Demand management Renewable energy On-site generation

115 Renewable Energy Generation

116 THE FUTURE OF ZERO NET ENERGY FOR PUBLIC FACILIIES IN CALIFORNIA Q and A Session Thank you for joining us today! Green California Schools and Community Colleges Summit 2014