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Designing low-emittance low-slope roofs that comply with California title 24 requirements

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Abstract
Numerical simulations investigated the effects of thermal emittance, solar reflectance, and roof insulation on low-slope roof heat transfer for nonresidential buildings located in the 16 climate zones of California. The cooling and heating seasonal roof heat transfers are compared to data for low-slope roofs have 0.55 solar reflectance and 0.75 thermal emittance. Recommendations are provided that enable bare and acrylic-coated metal roofs to comply with California’s building efficiency standards.
Date
10/2007
Author(s)
W Miller; A Desjarlais; L Shoemaker; S Kriner; R Dunlap; A Youngquist
Page(s)
Keyword(s)
low emittance; low slope roof; title 24; solar reflectance; heat transfer


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