SYMPOSIA PAPER Published: 01 January 1980
STP27526S

Infrasonic Measurement of Building Air Leakage: A Progress Report

Source

This research compares a new infrasonic method with the conventional blower method for determining the composite effective size of all the air-leakage passages in a house or apartment. In the frequency range used (0.1 to 7 Hz) small buildings are characterized mainly by one acoustic capacitance and one nonlinear leakage resistance. Infrasonic apparatus comprising a motor-driven source having known output, a sensitive pressure pickup, and an electronic signal processor has been constructed and used to measure leakage from several apartments and a house. Under field conditions the results of the infrasonic and blower measurements agree within a factor of two or three. Since the infrasonic system requires no through-the-wall blower vent or pressure taps, it is easier to set up than a blower system.

Author Information

Card, WH
Syracuse University, Syracuse, N.Y.
Sallman, A
Syracuse University, Syracuse, N.Y.
Graham, RW
Harris Computer Systems Division, Harris Corp., Ft. Lauderdale, Fla.
Drucker, EE
Syracuse University, Syracuse, N.Y.
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Details
Developed by Committee: E06
Pages: 73–88
DOI: 10.1520/STP27526S
ISBN-EB: 978-0-8031-4787-4
ISBN-13: 978-0-8031-0607-9