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1. Sustainable School DesignCreating 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 3Climate Zone Map
6. Chapter 3Recommendation Tables
7. Prescriptive HVAC recommendations for K-12What Type of HVAC System?
8. Prescriptive recommendations forSix 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-specificRecommendation Tables
10. Climate-specific and system-specificRecommendation Tables
11. Chapter 5Good 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-10HVAC Equipment Efficiencies Recommended efficiencies based on:
Climate zone
HVAC system type
System size (capacity)
Fuel type (electricity or natural gas)
13. HV-11Ventilation Air Determine based on ASHRAE 62.1
Use actual occupancy for calculations, not exit population
Use population diversity (D)when using multiple-zonerecirculating systems
Use time-of-day schedulesto introduce ventilation aironly when a zone isexpected to be occupied
14. HV9 or HV14Energy Used to Condition OA
15. HV-8Part-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-12Dedicated OA Systems
17. Proper Maintenance Neglecting preventive maintenance practices can quickly negate any energy savings expected
Filters should bereplaced regularly
ERVs need to be cleaned periodically
Dampers, valves, louvers, and sensors must all be periodically inspected and calibrated
18. Commissioning Selection of commissioningauthority
Include commissioningactivities in the project schedule
Recommendedcommissioningactivities
19. Advanced Energy Design Guidefor K-12 School Buildings www.ashrae.org/freeaedg