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Part 1: Baseline scenario:
- Operating Schedule: 12/5
- Roof Construction: R38
The resulting average EUI is 60.9 kBtu/sf/yr.
Part 2: Impact of Building Envelope-Related Design:
- WWR western walls: ≤ 15%
- WWR eastern walls: ≤ 15%
- WWR northern walls: ≤ 65%
- WWR southern walls: ≤ 65%
- Window glass north, east and, west: TrpLoE
- Window shades north, east, and west: 2/3 window height
- Wall construction: R38 Wood
- Roof construction: 10.25-inch SIP
The resulting average EUI is 50.2 kBtu/sf/yr.
Part 3: Impact of Power and Lighting
- Plug load efficiency: 0.6 W/sf
- Lighting efficiency: 0.3 W/sf
- Daylighting and occupancy controls
The resulting average EUI is 30.4 kBtu/sf/yr.
Part 4: Benefits of Adding PV
- Surface Coverage: 90%
- Panel Efficiency: 20.4%
- Payback Limit: 30 years
The resulting average EUI is -11.3 kBtu/sf/yr.
Part 5: Scenario Comparison
EUI value continues to drop as I add more and more design improvements. The final result reduces to -11.3, which indicates the design combination of the envelope, plug load, lighting, and PV panel are all enacted to make the building achieve Netzero and generate excess energy.
