Model
Energy Model Creation
Baseline
South Facing Window - Adjustment
North Facing Window - Adjustment
West Facing Window - Adjustment
East Facing Window - Adjustment
Fixture Efficiency- Adjustment
Renewable
Key Factor Tile
Optimization
Comparison
Initial
88 kWh / m2 / year (Machine Learning from Forma)
Initial Design - Insight
288 kWh / m2 / year
After Design - Optimization
152 kWh / m2 / year
Next Time Improve….
Adjustments
- Roof is now flat.
- Changes roof to increase R value.
- Reduce Window to Wall Ratio to at least 0.35
Thermal Properties - Envelope
- Type: Walls
- Description: Concrete Masonry Units (CMU) cavity wall on exterior and Gypsum Wall Board (GWB) on furring on interior, Exterior Function
- Thermal Resistance (R): 4.5 (m2K)/W (R-25 Imperial)
Wall Assembly
- Type: Roof
- Description: Steel Deck with Metal Deck and Insulation and Ethylene Propylene Diene Monomer (EPDM) Finish
- Thermal Resistance (R): 19.61 (m2K)/W (R-111 Imperial)
Window to Wall Ratio Calculation - Schedules
Calculation = 491 m2 / (491 m2 + 988 m2) = 0.33
Windows - 491 m2
Walls - 988 m2
Re-do Energy Analysis
Baseline
Operating Schedule
Final
Comparison
Initial
88 kWh / m2 / year (Machine Learning from Forma)
Initial Design - Insight
222 kWh / m2 / year
After Design - Optimization
57.6 kWh / m2 / year
Adjustment - PV Surface to 0% in Insight
Comparison
Initial - Forma
88 kWh / m2 / year (Machine Learning from Forma)
Adjustment - Insight - NO PV (DEMAND)
113 kWh / m2 / year =* 2,897 m2 = 327,361 kWh / year
After Design - Optimization (SUPPLY)
175,808 kWh / year (54% of demand)
- 18.6% Efficiency Coverage
- 50 year payback limit
- 100% of surface area
DIFFERENCE = 327,361 kWh / year - 175,808 kWh / year = 151,223 kWh / year
