An automated air infiltration measuring system using SF[6] tracer gas in constant concentration and decay methods

From National Research Council Canada

Download	View final version: An automated air infiltration measuring system using SF[6] tracer gas in constant concentration and decay methods (PDF, 1.8 MiB)
Author	Search for: Kumar, R.; Search for: Ireson, A. D.; Search for: Orr, H. W.
Format	Text, Article
Subject	Air flow/Wind pressure; air infiltration; measurement systems; gaseous state; air flow; buildings
Abstract	One method of measuring rate of air infiltration in buildings involves the use of small amounts of a tracer gas. The concentration of the gas, which is measured at regular intervals, provides the basis for evaluating the infiltration rate. In the following paper, two bases for such evaluations are discussed - the decay method and the constant concentration method. A system is described which automatically operates a portable electron capture detector/ chromatograph and measures parts per billion concentrations of sulphur hexafluoride (SF[6]) in air. It samples air on a 1-min. cycle. In the decay method, the slope of concentraion vs time on a semilogarithmic plot can be used to compute the infiltration rate. In the second method, the system injects SF[6] at the rate required to maintain the tracer gas at a fixed, predetermined level. The infiltration rate is proportional to the rate at which the tracer gas must be injected.
Publication date	1979
In	ASHRAE Transactions 85, no. 2 (1979): 385–395.
Language	English
Peer reviewed	Yes
Identifier	DBR-P-949
NRC number	NRCC 18835 NRC-IRC-1503
NPARC number	20378643
Export citation	Export as RIS
Report a correction	Report a correction (opens in a new tab)
Record identifier	4e8dd9df-0d59-4eb4-ae8d-7f8db008c1b8
Record created	2012-07-24
Record modified	2024-03-15

Date modified:: 2024-07-16