Four techniques for determining the in situ thermal resistance of rigid board insulation installed in conventional low-sloped roofs are described and compared. All techniques use measured temperature distributions and heat fluxes in the roof systems. The limitations of the techniques are discussed. Test results are presented to allow a comparison of the methods.

Issue Section:
Research Papers
Keywords:
Conduction, Instrumentation, Measurement Techniques
Topics:
Thermal resistance, Roofs, Flux (Metallurgy), Heat, Heat conduction, Instrumentation, Insulation, Temperature distribution
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Copyright © 1989
 by ASME
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