I used this model to analyze energy efficiency of the building
First result is the below (75.6 kBtu/ ft2/ yr)
Second result after setting Operating Schedule (12/5) and Roof Construction (R38)
I got 54.1 (kBtu/ ft2/ yr).
- I arranged Building Envelope parameters as below and got the result, 49.0 (kBtu/ ft2/ yr).
The factors which I put the star mark (★) have meaningful impact on the results, and the others have no or only slight impact on that.
b.i ★Wall Construction: R38 Wood
- Southern Walls: 0%
- Northern Walls: 50%
★ Western Walls: 15%
★ Eastern Walls: 30- 15%
b.iii Window Glass
- South: Dbl LoE
- North: Dbl LoE
- West: Dbl LoE
- East: Dbl LoE
b.iv Window Shades
- South: 1/6 window height
- North: 1/6 window height
★ West: 1/3 window height
★ East: 1/3 window height
- I also coordinated Power and Lighting Measures and got the result, 44.6 (kBtu/ ft2/ yr).
Compared to Building Envelope parameters, it can achieve almost same reduction in the Predicted Mean EUI, -4.4 (kBtu/ ft2/ yr). The factors which I put the star mark (★) have meaningful impact on the results.
a.i ★Plug Load Efficiency: 1.3W/sf
a.ii ★Lighting Efficiency: 0.7W/sf
a.ii -Daylighting & Occupancy Controls: Daylighting Controls
- PV panels can be said that crucial to improve energy efficiency of the building. Through the experiments, I found the best combination of these factors and got the result as shown in below. I put the star mark (★) for all the factors because they have significant impacts on the results. Therefore, how to utilize PV panels can be the key strategy for achieving the desired goal.
a.i ★PV - Surface Coverage: 90%
a.ii ★PV - Payback Limit: 20year
a.iii ★PV - Panel Efficiency: 20.4%