SAFE - Particle size-dependent leakage and losses of aerosols in respirators

Název:	Particle size-dependent leakage and losses of aerosols in respirators
Další názvová informace:
Překlad:	Únikna velikosti závislých částic a ztráta aerosolů v respirátorech
Autor:	Holton, Patricia M. Tacket, Denise Lynne Willeke, Klaus
Klíčové slovo:	respirátory aerosoly úniky látek částice měření
Anotace:	Measuring particle size-dependent leakage into and losses inside a respirator reveals the deposition mechanisms occurring at the leak site and the flow dynamics inside the respirator. This study investigated particle size-dependent leakage and deposition within the mask by examining the leakage into the mask for different hole locations, probe locations, hole shapes, hole lengths and hole sizes. The shape of the leak has an effect on particle size-dependent leakage. Probe and leak location tests indicated that not only does the total measured leakage change but also the size-dependence of the leakage changes depending on the leak and probe locations. When the leak site is in the chin area, the clean air entering through the filters at the chin helps to carry the inward leakage into the breathing zone. Particle size-dependent leakage does occur and is due to both inertial entry losses at the leak site and within the mask, and diffusional losses within the mask and leak site. Particle size-dependent curves change shape as the hole size changes with relatively more larger particles entering through the small hole size.
Jazyk dokumentu:	eng

Název zdroje:	American Industrial Hygiene Association Journal
Ročník:	48
Číslo:	10
Rozsah (stránky):	s. 848-854
Rok vydání:	1987

Publikováno na URL:
Připojené soubory:	Particle size-dependent leakage_AIHA_1987