Airflows In and Around Linear Downflow ‘Safety’ Cabinets

Autor:	B. J. Mullan, R. P. Clark
Rok vydání:	1978
Předmět:	Air Movements Acoustics Environment Controlled Applied Microbiology and Biotechnology Microbiology Hand movements law.invention Equipment and Supplies Evaluation Studies as Topic law Air Pollution Bunsen burner Geology Schlieren photography
Zdroj:	Journal of Applied Bacteriology. 45:131-135
ISSN:	0021-8847
DOI:	10.1111/j.1365-2672.1978.tb04206.x
Popis:	Schlieren photography has been used to visualize the airflows in and around three re-circulating linear downflow cabinets. The results show that there is an air ‘bulge’ at the front opening that allows air from within the cabinet to spill out towards the operator. Hand movements within, and activity just outside, cause air to be expelled from these cabinets. Bunsen burners within the cabinets destroy the linear nature of the downflowing air streams. The results indicate that the operator protection afforded by these cabinets may be much less than is generally recognized.
Databáze:	OpenAIRE
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