Net Zero Energy Home, a post-occupancy assessment

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The firm tested a few different design iterations to achieve its net-zero energy and daylighting goals. First, six forms were modeled in SketchUp and analyzed in Sefaira with the goal of maintaining at least 200 lux daylighting for 60% of the year in the main living areas. The final design incorporated a narrow plate, compact shape, taller windows, and an interior “light well.” Once the ideal conceptual design was found, the challenge of maintaining a steady, passive temperature in a mixed climate with very cold winters and hot, humid summers was addressed. Eleven design strategies were analyzed using Sefaira, leading to the decision to specify an Insulated Concrete Formwork (ICF) and a combination of small fixed overhangs and operable shading screens over the south-facing windows. Read more:
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