STP904

    Pressurization Testing of Federal Buildings

    Published: Jan 1986


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    Abstract

    Seven federal buildings ranging in size from 1900 to 48 000 m2 of floor area were pressure tested to determine the airtightness of the building envelopes. These tests are part of a larger project to evaluate the thermal integrity of the envelopes of federal buildings. The buildings were pressurized using the air-handling equipment in the buildings and a constant-injection, tracer gas technique to measure the airflow through the fans. In addition, selected windows in some of these buildings were pressure tested separately to determine the airtightness of individual components.

    The results of the whole building and component pressurization tests are presented and discussed. In addition, the component pressurization test results are used to estimate the contribution of the windows to the total building air leakage. The results of the building pressurization tests are compared empirically to measured infiltration rates on the same buildings. The large building infiltration model developed by Shaw and Tamura of the National Research Council of Canada is applied to the buildings to predict air infiltration rates induced by weather.

    Keywords:

    air infiltration, air leakage, airtightness, component pressurization, large building infiltration, pressurization testing


    Author Information:

    Persily, AK
    Mechanical engineer and group leader, Center for Building Technology, National Bureau of Standards, Gaithersburg, MD

    Grot, RA
    Mechanical engineer and group leader, Center for Building Technology, National Bureau of Standards, Gaithersburg, MD


    Paper ID: STP19648S

    Committee/Subcommittee: E06.41

    DOI: 10.1520/STP19648S


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