Your Name
Your building envelope recommendations for this practice exercise should feature:
- Your recommended settings for the Insight Factor tiles
- A screenshot from Insight showing the Predicted Mean EUI and the range of values resulting from your assumptions
Goal: Predicted Mean EUI of 54 kBtu/ft2/yr or lower
Base Case:
- Operating schedule: 12/5
- Roof Construction: R38
Explore the Impact of Building Envelope-Related Design Decisions
- Thermal Properties of Wall Surface (Wall Construction) for all orientations
- R38 Wood
- Glazing % (Window-to-Wall Ratio) for each orientation
- North: 40%
- South: 40%
- East: 30%
- West: 30%
- Thermal Properties of Glazing Surfaces for each orientation
- North: Dbl LoE
- South: Dbl LoE
- Window Shading amount for each orientation
- North: 1/6 Width Height
- South: 1/6 Width Height
- East: 1/4 Width Height
- West: 1/4 Width Height
Explore the Potential Impact of Power and Lighting Measures (versus Building Envelope Measures)
- Plug Load Efficiency (the equipment and appliances that draw power): 1.0 W/sf
- Lighting Efficiency (based on the efficiency of the lighting fixtures): 0.7 W/sf
- Daylighting & Occupancy Controls: Daylighting & Occupancy Controls
How lower can you drive the Predicted Mean EUI by adding these power and lighting measures to your recommended building envelope choices?
- The Predicted Mean EUI is decreased from 53.5 kBtu/ft^2/yr to 48.3 kBtu/ft^2/yr, suggesting a reduction of 5.2 kBtu/ft^2/yr.
Explore the Benefits of Adding Photovoltaic Panels to Your Design
- Surface Coverage: 60%
- Panel Efficiency: 20.4%
- Payback Limit (how many years you will allow for the panels to pay for themselves: 20 years
How low can you drive the Predicted Mean EUI by adding these Photovoltaic panel measures to your overall design strategy?
- By adding the PV panels to the previous design strategy, the predicted Mean EUI dropped from 48.3 kBtu/ft^2/yr to 25.9 kBtu/ft^2/yr, indicating another 22.4 kBtu/ft^2/yr reduction.
