STP789

    Boiling Tests of Thermal Insulation in Conduit-Type Underground Heat Distribution Systems

    Published: Jan 1983


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    Abstract

    Thermal insulation in a conduit-type underground heat distribution system is expected to withstand severe boiling, which can occur in the case of conduit failure under high groundwater table. The U.S. Government specifies boiling-test criteria for the approval of commercial underground systems. This paper describes the test apparatus and procedure of Tri-Services and Federal Agencies' Specifications in order to evaluate thermal performance of various insulations after they are subjected to prolonged boiling conditions.

    Keywords:

    calcium silicate insulation, Federal Agency Specifications, thermal insulation, Tri-Service boiling test criteria, underground conduit systems


    Author Information:

    Kusuda, T
    Center for Building Technology, National Bureau of Standards, Washington, D.C.,

    Ellis, WM
    Center for Building Technology, National Bureau of Standards, Washington, D.C.,


    Paper ID: STP29489S

    Committee/Subcommittee: C16.16

    DOI: 10.1520/STP29489S


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