STP789: Thermal Testing of Roof Systems

    Larson, DC
    Associate Professor of Physics and Professor of Materials Engineering, Drexel University, Philadelphia, Pa.

    Corneliussen, RD
    Associate Professor of Physics and Professor of Materials Engineering, Drexel University, Philadelphia, Pa.

    Pages: 13    Published: Jan 1983


    Abstract

    A comprehensive program to investigate the thermal performance of insulated flat roofs has been developed at Drexel University in Philadelphia. A number of 1.22-m (4-ft)-square roof systems have been sealed into expanded polystyrene (EPS) modules and placed in a horizontal array on the roof of a Drexel building. The roof specimens are exposed to the outdoor urban environment and at the same time are connected to a “life support system” that maintains the undersides of the roofs exposed to a typical indoor atmosphere. A 1.22-m (4-ft)-square temperature-controlled test plate, also enclosed in EPS, is used with heat flow sensors to determine periodically the thermal resistances (R-values) of the roof systems. The test plate system has been calibrated with fibrous glass board material from the National Bureau of Standards and preliminary test results have been obtained for a single-ply roof system with EPS insulation. The application of the test plate approach to in situ R-value measurements of roofing systems at remote sites is also discussed.

    Keywords:

    thermal testing, insulated roof systems, heat flow sensors, thermal resistance


    Paper ID: STP29460S

    Committee/Subcommittee: C16.30

    DOI: 10.1520/STP29460S


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