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The Reduction of fumecupboard running costs

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008  940216s1982 gbr|||| | |00010|eng d
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1001 ‎$0‎MAPA20080012496‎$a‎Hughes, D.
24514‎$a‎The Reduction of fumecupboard running costs‎$c‎D. Hughes and B. McIntosh
520  ‎$a‎The power required to move and to heat the air consumed by a laboratory fumecupboard is considered. A significant economy is obtained if the volume rate of air extracted can be halved. Such a reduction is acceptable if it occurs when the sash is closed to half the maximum aperture so that the design face velocity is maintained. This can achieved by coupling the fan to a two-speed electric motor controlled by a limit switch automatically actuated by the fumecupboard sash
65011‎$0‎MAPA20080585679‎$a‎Higiene industrial
65011‎$0‎MAPA20080604967‎$a‎Campanas de extracción
65011‎$0‎MAPA20080605278‎$a‎Contaminantes químicos
65011‎$0‎MAPA20080565954‎$a‎Humos tóxicos
65011‎$0‎MAPA20080612597‎$a‎Sistemas de ventilación
65011‎$0‎MAPA20080560997‎$a‎Ventilación
65011‎$0‎MAPA20080579784‎$a‎Costes económicos
7001 ‎$0‎MAPA20080076603‎$a‎MacIntosh, B.
7404 ‎$a‎The Annals of occupational hygiene
7730 ‎$t‎The Annals of occupational hygiene‎$d‎Oxford [etc.]‎$g‎nº 1, 1982 ; p. 101-104