ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)31497
CIS number 79-1014
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1979
Convention or series no.
Author(s) Bender M.
Title Fume hoods, open canopy type - their ability to capture pollutants in various environments.
Bibliographic information Feb. 1979, Vol.40, No.2, p.118-127. Illus. 5 ref.
Abstract Using field observations, modelling techniques, and theoretical analysis, parameters describing the performance and collection efficiency of large industrial canopy fume hoods are established for steady state collection of fume and collection of plumes with fluctuating flow rates. Suction flow rates required to capture more than 97% of the pollutant were established for various experimental conditions: hood not centrally mounted above fume source; plume subject to cross draft; a combination of these two. A baffle plate arrangement for use within hoods which prevents recirculation and spillage of fume is proposed. At a cost of US-$6 per m3/h of installed fume control system capacity, the arrangement promises to save millions of dollars on large new installations and significantly to improve the collection efficiency of existing systems. A practical application of the results to the design of electric arc furnace canopy hoods is proposed.
Descriptors (primary) exhaust hoods; ventilation design; aerodynamics; local exhaust
Descriptors (secondary) electric arc furnaces; mathematical analysis; tests on models; economic aspects
Document type -
Subject(s) Heating, ventilation and climate
Broad subject area(s)
Browse category(ies) Ventilation