Practice Exercise: Building Envelope Systems

Your Name
Li, Jiarui

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

Initial Model

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Baseline Scenario:

  1. 12/5 Operating Schedule
  2. R38 Roof Construction
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Achievable Through Building Envelope Choices

South Side of Building Envelope-Related Design Decision

  1. 65% WWR
  2. 1/6 Window Height Window Shades
  3. Double LoE Window Glass
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North Side of Building Envelope-Related Design Decision

  1. 50% WWR
  2. 1/6 Window Height Window Shades
  3. Triple LoE Window Glass
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West Side of Building Envelope-Related Design Decision

  1. 30% WWR
  2. 1/6 Window Height Window Shades
  3. Triple LoE Window Glass
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East Side of Building Envelope-Related Design Decision

  1. 95% WWR
  2. 1/6 Window Height Window Shades
  3. Triple LoE Window Glass
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Wall Construction: R38 Wood

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Predicted Mean EUI: 53.2 kBtu/sf/yr

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Achievable Through Building Envelope + Power & Lighting Choices

  1. Plug Load Efficiency (the equipment and appliances that draw power): 0.6W/sf
  2. Lighting Efficiency (based on the efficiency of the lighting fixtures): 0.3W/sf
  3. Daylighting & Occupancy Controls: Both
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Predicted Mean EUI: 44.9 kBtu/sf/yr

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Achievable Through Adding Photovoltaic Panels to the Mix

  1. Surface Coverage: 90%
  2. Panel Efficiency: 20.4%
  3. Payback Limit: 20 years
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Predicted Mean EUI: 44.9 kBtu/sf/yr

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