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RESIDENTIAL AIR EXCHANGE RATES FOR USE IN INDOOR AIR AND EXPOSURE MODELING STUDIES
Citation:
Pandian, M., W.R. Ott, AND J. Behar. RESIDENTIAL AIR EXCHANGE RATES FOR USE IN INDOOR AIR AND EXPOSURE MODELING STUDIES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-95/267.
Description:
Data on air exchange rates are important inputs to indoor air quality models. ndoor air models, in turn, are incorporated into the structure of total human exposure models. ragmentary data on residential ventilation rates are available in various governmental reports, journal articles, and contractor reports. ost of the published papers present data on only a few homes to answer very specialized questions, and none of these publications summarize the ventilation rates of a large population of homes across the United States. rookhaven National Laboratory (BNL) has conducted more than 4000 residential perfluorocarbon tracer (PFT) measurements and brought them together into a large data base from about 100 studies in the United States and elsewhere. his paper analyzes the BNL PFT data base to generate frequency distributions and summary statistics for different regions of the United States, different seasons, and different levels within the homes. he data analyses suggest that residential ventilation rates are similar in the northeastern and northwestern states but higher in the southwestern states. inter and fall ventilation rates are similar, but the rates are slightly higher in spring, and much higher in summer. ulti-level residences have higher air exchange rates then single-level residences. lthough the BNL data are not a representative sample of homes in the United States, these analyses give insight into the range of air exchange rates found in the United States under a great variety of conditions and are intended for use by developers of models of indoor air quality and total human exposure.