Kim Juarez-Rico
1. Baseline Scenario
Using:
- Operating Schedule: 12/5
- Roof Construction: R38
2. Building Envelope Choices
Goal: predicted mean EUI of 54 kBTU/ft2/yr
Using a combination of :
- Thermal properties of wall construction
- Glazing % for each orientation
- Thermal properties of glazing surfaces for each orientation
- Window shading
Recommendations to achieve this goal:
- Wall Construction: R13+R10 Metal
- WWR Northern Walls: 15%
- WWR Southern Walls: 30%
- WWR Eastern Walls: 30%
- WWR Western Walls: 15%
- Window Shades North: 1/3 Win Height
- Window Shades South: 1/3 Win Height
- Window Shades East: 1/3 Win Height
- Window Shades West: 1/2 Win Height
- Window Glass North: Double LoE (as modeled in BIM)
- Window Glass South: Triple LoE
3. Building Envelope + Power and Lighting
Goal: Driving the Predicted Mean EUI down by adding power and lighting measures to recommended building envelop choices
Using:
- Plug load efficiency
- Lighting efficiency
- Daylighting and occupancy controls
- Building envelope choices modeled in (2) that resulted in predicted mean EUI of 54 kBTU/ft2/yr
Recommendations to achieve this goal:
- Plug load efficiency: 0.6 W/sf
- Lighting efficiency: 0.3 W/sf
- Daylighting and occupancy controls: Use both daylighting and occupancy controls
I was able to drive the Predicted Mean EUI to 34.4 kBTU/ft2/yr by using the listed recommendations.
4. Photovoltaic Panels
Goal: Driving the Predicted Mean EUI down by adding photovoltaic panels to the design to recommended building envelop choices and power and lighting measures
Using:
- Surface coverage of PV
- Panel efficiency
- Payback limit
Recommendations resulting in the lowest Predicted Mean EUI:
- Surface coverage of PV: 90%
- Panel efficiency: 20.4%
- Payback limit: 30 yr
I was able to drive the Predicted Mean EUI to -7.38 kBTU/ft2/yr by using the listed recommendations. This means that the building is net positive energy by taking advantage of solar PV. The building would generate more energy than it uses.
5. Overall Comparison
