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THE INFLUENCE OF BUILDING FEATURES ON AIR EXCHANGE RATE AND PARTICLE PENETRATION
Citation:
Mosley*, R B. AND C. Whitfield. THE INFLUENCE OF BUILDING FEATURES ON AIR EXCHANGE RATE AND PARTICLE PENETRATION. Presented at Indoor Air '02, Monterey, CA, 6/30-7/5/02.
Description:
The paper discusses some measured values of particle penetration into an unoccupied research house under a variety of conditions. (NOTE: Exposure to fine particles of outdoor origin continues to receive increased attention. Since people spend up to 90% of their time indoors, the relationship between indoor and outdoor fine particles has a large influence on their exposure.) The effect of house tightness on air exchange rate and, consequently, on particle penetration is addressed. It is shown that air exchange rate can be reduced 90% by closing leaks. It is also shown that only particles with aerodynamic diameters in the range of 20 to 3000 nm enter the house in significant numbers. In this unoccupied research house, with no resuspension assumed, the deposition rate constant is shown to have minor influence on the steady state particle concentration.