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Large baed rectangular chambers, Rochester-style test chambers, and displacement ventilated rooms have traditionally been used to study eects of potentially toxic pollutants on animals and humans. Recently, the interest in harmful eects of indoor gaseous pollutants and associated air quality control have rapidly increased because most urban dwellers spend more than 90% of their daily lives in closed environments. Of interest here are the experimentally validated CFD simulations of transient turbulent non-isothermal ̄ow with tracer gas transport in a personal exposure environment. The purpose of this paper is to examine the eect of transient breathing on trace gas ambient (i.e., exposure) concentrations and ultimately the uptake (i.e., dose concentrations) by the subject for three dierent orientations with respect to the non-isothermal air stream and the location of the tracer gas source.

Author

S. Hyun; C. Kleinstreuer

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0017-9310)

Published

2001

Language

EN