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Notes: Sumario: The 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 sashRelated records: En: The Annals of occupational hygiene. - Oxford [etc.]. - nº 1, 1982 ; p. 101-104Materia / lugar / evento: Higiene industrial Campanas de extracción Contaminantes químicos Humos tóxicos Sistemas de ventilación Ventilación Costes económicos Otros autores: MacIntosh, B.
Secondary titles: Título: The Annals of occupational hygiene
Other categories: 870

The Reduction of fumecupboard running costs