Estimation of Uncertainty in Tracer Gas Measurement of Air Change Rates

Atsushi Iizuka, Yumiko Okuizumi and Yukio Yanagisawa
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Atsushi Iizuka: Research Center for Sustainable Science and Engineering, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Sendai, Miyagi 980-8577, Japan
Yumiko Okuizumi: Department of Environmental Systems, Institute of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan
Yukio Yanagisawa: Department of Environmental Systems, Institute of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan

IJERPH, 2010, vol. 7, issue 12, 1-12

Abstract: Simple and economical measurement of air change rates can be achieved with a passive-type tracer gas doser and sampler. However, this is made more complex by the fact many buildings are not a single fully mixed zone. This means many measurements are required to obtain information on ventilation conditions. In this study, we evaluated the uncertainty of tracer gas measurement of air change rate in n completely mixed zones. A single measurement with one tracer gas could be used to simply estimate the air change rate when n = 2. Accurate air change rates could not be obtained for n ? 2 due to a lack of information. However, the proposed method can be used to estimate an air change rate with an accuracy of

Keywords: ventilation; tracer gas; indoor air; perfluorocarbon (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2010
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