New approach for measuring airflows in buildings using a perfluorocarbon tracer

K. W. Cheong and S. B. Riffat

Applied Energy, 1995, vol. 51, issue 3, 223-232

Abstract: This paper describes a new approach for measuring airflows in buildings based on a perfluorocarbon tracer (PFT) technique. Ventilation measurements were carried out in a test room to examine the accuracy of the PFT technique. The PFT, which is a liquid at room temperature, was injected into the room at a constant rate using a thermostatically controlled heating unit. Tracer gas samples were collected using the active (pumped) sampling method, in which stainless-steel tubes packed with adsorbent were employed. The samples were stored for subsequent analysis in the laboratory using a thermal desorber and gas monitor. The experimental results from the new PFT approach were compared with the conventional method using SF6 and PFT tracer gases.

Date: 1995
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