BIMtopia

Practice Exercise: Building Envelope Systems

Your Name
Xinyi Yang
  1. Baseline scenario

Operating Schedule: 12.5

Roof Construction: R38

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Average EUI: 51.4 kBtu/sf/yr

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  1. Building Envelope-Related Design

WWR southern, northern, eastern walls: <40%

WWR western walls: <30%

Window shades south, north, west and east: 2/3 window height

Window glass south, north, west and east: Trp LoE

Wall construction: R38 wood

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Average EUI: 39.4 kBtu/sf/yr

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  1. Power and Lighting

Lighting efficiency: 0.3 W/sf

Daylighting & Occupancy controls

Plug load efficiency: 0.6 W/sf

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Average EUI: 23.6 kBtu/sf/yr

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  1. Adding PV

Payback limit: 30 yr

Surface coverage: 90%

Panel efficiency: 20.4%

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Average EUI: -18.6 kBtu/sf/yr

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  1. Model history
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The design of the envelope, PV, power and lighting can all help to reduce the energy consumption.