Air Exchange Rate 1
Air Exchange Rate 1 : Radiation and Radiological Disasters. (a) The rate at which outside air replaces indoor air in a given space. [USEPA, 1997a: EPA Terms of Environment]; (b) Rate of air leakage through windows, doorways, intakes, exhausts, and "adventitious openings" (i.e. cracks and seams) that combine to form the leakage configuration of the building envelope plus natural and mechanical ventilation. [USEPA, 1997b: Exposure Factors Handbook]
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