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PRELIMINARY INVESTIGATION OF UNCOMBUSTED AUTO FUEL VAPOR DISPERSION WITHIN A RESIDENTIAL GARAGE MICROENVIRONMENT
Citation:
Lansari, A., J.J. Streicher, A. Huber, G.H. Crescenti, R. Zweidinger, AND J. Duncan. PRELIMINARY INVESTIGATION OF UNCOMBUSTED AUTO FUEL VAPOR DISPERSION WITHIN A RESIDENTIAL GARAGE MICROENVIRONMENT. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-93/123 (NTIS PB93204048).
Description:
Evaporative emissions from vehicles in an attached garage may represent a significant source of indoor pollution and human exposure. ilot field study was undertaken to investigate potential in-house dispersion of evaporative emissions of uncombusted fuels from a vehicle parked inside an attached garage. n a set of experiments using sulfur hexafluoride (SF6 tracer gas, the multizonal mass balance model, CONTAM88, was used to predict nterzonal air flow rates and SF6 concentration distributions within the garage and house. everal experiments were included to evaluate the effect of meteorology and mechanical mixing mechanisms on the dispersion of automobile fuel vapor. easurements indicated that approximately three percent of the garage maximum concentration was measured in a room adjacent to the garage. he model successfully predicted garage concentrations under well mixed conditions, but underpredicted the measured concentrations within various rooms of the house, in which mixing was incomplete. Multizonal mass balance models such as CONTAM88 may be useful in approximating ontaminant concentrations at various locations within the house.