Lavinia Pedrollo

Your Name
Pedrollo, Lavinia

Final Recommended Settings

The final recommended settings include a 12/5 operating schedule, roof construction of R38, wall construction with R-38 wood, window-to-wall ratios of 95% for north and south orientations, 65% for east, and 30% for west, thermal properties of glazing surfaces with Dbl LoE for north and Trp LoE for south, east, and west orientations, window shading amount kept at the original value of 2/3 window height, plug load efficiency of 0.6 W/SF, lighting efficiency of 0.3 W/SF, both daylighting and occupancy controls employed, PV surface coverage of 90%, panel efficiency of 20.4%, and a PV payback limit of 20 years. Considering these settings, a predicted mean EUI of -6.83 kBtu/SF/yr was achieved, indicating a net-positive energy performance. This means that the building is expected to generate more energy than it consumes on an annual basis!

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Design Thinking/Recommendation Process

Scenario 0: Baseline

Settings: using the starting point file, I have changed the Operating Schedule to 12/5 and the Roof Construction to R38.

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Results: 53.9 kBtu/SF/yr predicted mean EUI

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Scenario 1: changing only building envelope options

Setup (best recommendation): starting from the baseline scenario, I suggest the following.

  1. Wall Construction: R-38 Wood
  2. Window-to-Wall Ratio for each orientation:
    1. North: 95%
    2. South: 95%
    3. East: 65%
    4. West: 30%
  3. Thermal Properties of Glazing Surfaces for each orientation
    1. North: Dbl LoE
    2. South: Trp LoE
    3. East: Trp LoE
    4. West: Trp LoE
  4. Window Shading amount for each orientation: kept the original value of 2/3 window height (hence not displaying the graphs)
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Results: 43.3 kBtu/SF/yr predicted mean EUI

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Scenario 2: changing building envelope and power & lighting options

Setup (best recommendation): starting from scenario 1, I suggest the following changes.

  1. Plug Load Efficiency: 0.6 W/SF
  2. Lighting Efficiency: 0.3 W/SF
  3. Daylighting & Occupancy Controls: both employed
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Results: 35.0 kBtu/SF/yr predicted mean EUI

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Scenario 3: changing building envelope, power & lighting options + adding PV panels

Setup (best recommendation): starting from scenario 2, I suggest the following changes.

  1. Surface Coverage: 90%
  2. Panel Efficiency: 20.4%
  3. Payback Limit: 20 years
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Results: -6.83 kBtu/SF/yr predicted mean EUI

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