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Sustainable School Design Creating Healthy, High Performance School Facilities

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Sustainable School Design Creating Healthy, High Performance School Facilities

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    1. Sustainable School Design Creating Healthy, High Performance School Facilities

    2. Adv. Energy Design Guides Collaboration of: ASHRAE AIA IESNA USGBC U.S. DOE SBIC CHPS NCEF

    3. AEDG for K-12 School Buildings Overview Climate-specific recommendations to achieve 30% energy savings Promotes off-the-shelf technology (no special expertise to design/install) Addresses whole building and the interaction of sub-systems (envelope, lighting, HVAC, service water heating)

    4. LEED® for Schools Can be used to achieve four points under Energy and Atmosphere Credit 1

    5. Chapter 3 Climate Zone Map

    6. Chapter 3 Recommendation Tables

    7. Prescriptive HVAC recommendations for K-12 What Type of HVAC System?

    8. Prescriptive recommendations for Six HVAC System Types HV-1: Single-zone, packaged DX units (or split DX systems) HV-2: Water-source (or ground-source) heat pumps with dedicated OA system HV-3: Unit ventilators with water chiller and boiler HV-4: Fan coils with water chiller and boiler and dedicated OA system HV-5: Multiple-zone, VAV packaged DX rooftop units HV-6: Multiple-zone, VAV air handlers with water chiller

    9. Climate-specific and system-specific Recommendation Tables

    10. Climate-specific and system-specific Recommendation Tables

    11. Chapter 5 Good Design Practice Load calculations Dehumidification Energy recovery Equipment efficiencies Ventilation air Dedicated OA systems Economizer Demand ventilation Exhaust air systems Fan motor efficiencies System-level controls Chilled-water system Hot-water heating Thermal zoning Filters Duct design, construction Duct insulation Duct sealing, leak testing Air balancing Commissioning Relief versus return fans Heating sources Noise control Proper maintenance Zone temperature control Operable windows

    12. HV-10 HVAC Equipment Efficiencies Recommended efficiencies based on: Climate zone HVAC system type System size (capacity) Fuel type (electricity or natural gas)

    13. HV-11 Ventilation Air Determine based on ASHRAE 62.1 Use actual occupancy for calculations, not exit population Use population diversity (D) when using multiple-zone recirculating systems Use time-of-day schedules to introduce ventilation air only when a zone is expected to be occupied

    14. HV9 or HV14 Energy Used to Condition OA

    15. HV-8 Part-Load Dehumidification Design system to minimize number of hours that space relative humidity remains above 60% Recommends methods for improving part-load dehumidification (by HVAC system type)

    16. HV-12 Dedicated OA Systems

    17. Proper Maintenance Neglecting preventive maintenance practices can quickly negate any energy savings expected Filters should be replaced regularly ERVs need to be cleaned periodically Dampers, valves, louvers, and sensors must all be periodically inspected and calibrated

    18. Commissioning Selection of commissioning authority Include commissioning activities in the project schedule Recommended commissioning activities

    19. Advanced Energy Design Guide for K-12 School Buildings www.ashrae.org/freeaedg

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