STP789

    Thermal Testing of Roof Systems

    Published: Jan 1983


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    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


    Author Information:

    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.


    Paper ID: STP29460S

    Committee/Subcommittee: C16.30

    DOI: 10.1520/STP29460S


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