With Operating Schedule set to 12/5 and Roof Construction to R38:
- Achievable through building envelope choices
Wall Construction: R38 Wood
WWR - Western Walls: BIM (0%)
WWR - Southern Walls: 0%
WWR - Eastern Walls: 0%
WWR - Northern Walls: Default since no impaction
Window Glass and Window Shading for all directions have no impact on the EUI since WWR is 0%.
This combination can bring the lowest EUI but there are no windows in this building which would require more artificial lights in the building.
WWR - Western Walls: BIM (0%)
WWR - Southern Walls: 50%
WWR - Eastern Walls: 50%
WWR - Northern Walls: 50%
Window Glass for Southern and Eastern Walls: Trip LoE
Window Shades for South and East: 2/3 Win Height
This combination just increases by 0.3 kBtu / ft2 /yr compared to the former combination but has a reasonable WWR ratio.
- Achievable through building envelope + power & lighting choices
With settings from EUI = 38.8 kBtu / ft2 /yr case from above
Plug Load Efficiency: 0.6 W/sf
Lighting Efficiency: 0.3 W/sf
Daylighting & Occupancy Controls: Occupancy Controls
With this combination, the EUI is 23.0 kBtu / ft2 /yr
- Achievable through adding Photovoltaic panels to the mix
With additional settings from the above combination:
PV - Panel Efficiency: 20.4%
PV - Payback limit: 30yr
PV - Surface Coverage: 90%
