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Title: Estimating transient heat flows and measuring surface temperatures of a built-up roof
Authors: Korhonen, C. J. (Charles J.)
Keywords: Heat
Heat flow
Infrared equipment
Roof temperature
Thermal properties
Building materials
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 83-22.
Description: Special Report
Abstract: Transient heat flow through a multilayered building component can be estimated using the transfer function method presented in the ASHRAE (1977) Handbook of Fundamentals. Sol-air temperature is one parameter recommended for use in this method, but surface temperatures were shown to be a reasonable substitute. Although the magnitude of the heat flow as calculated with the transfer function appears to be reasonable, more testing should be carried out to determine its accuracy. An infrared camera can measure roof surface temperatures fairly accurately; the most accurate measurements were made at night.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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