BIMtopia

Practice Exercise: Building Envelope Systems

Your Name
Yuuki Tanaka
  1. Baseline Scenario
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      Achievable through:

    1. 12/5 Operating Schedule
    2. R19 Roof Construction
  2. Building Envelope Adjustments
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      Achievable through:

    1. ≤2% WWR - Western Walls
    2. ≤15% WWR - Eastern Walls
    3. ≤4% WWR - Northern Walls
  3. Building Envelope + Lighting & Power Choices
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      Achievable through:

    1. ≤ 0.6 W/sf for plug load efficiency
    2. ≤ 0.3 W/sf for lighting efficiency
    3. Having daylighting & occupancy controls
  4. Building Envelope + Lighting & Power Choices + Photovoltaic Panels
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      Achievable through:

    1. 90% PV surface coverage
    2. 30 year payback limit for solar panels
    3. 20.4% panel efficiency

From this exercise, it is clear that some adjustments have a larger effect than others. Having solar panels appears to reduce the EUI of the building by the most, whereas adjusting the building envelope has the least impact on EUI. Nonetheless, a multitude of changes are needed in order to meet net zero energy, and it is incredibly difficult to reach that goal by altering just one aspect of the building.

Scenario Comparison

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