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Document ID (ISN)102792
CIS number 03-1739
ISSN - Serial title 0003-4878 - Annals of Occupational Hygiene
Year 2002
Convention or series no.
Author(s) Marzal F., González E., Miñana A., Baeza A.
Title Influence of push element geometry on the capture efficiency of push-pull ventilation systems in surface treatment tanks
Bibliographic information June 2002, vol.46, No.4, p.383-393. Illus. 17 ref.
Abstract A full-scale installation which simulates a surface treatment tank provided with a push-pull ventilation system was designed. This study examines the influence of the geometry of the push element on the capture efficiency of the system. Among the key findings: the capture efficiency increases with the number of holes because of the continuous curtain formed, the size of the holes having no significant effect within the range studied (5-20mm diameter); the push element is best supported on the tank wall so that no air from outside penetrates below the emitting jets because in this way the impact of the curtain on the tank occurs earlier and losses are less; the best results are obtained when the holes are directed downwards towards the tank surface at an angle of between 22 and 45°.
Descriptors (primary) tracer gases; electroplating; ventilation systems; collection efficiency; vats
Descriptors (secondary) simulation facilities; description of technique; design of equipment; mechanical ventilation
Document type D - Periodical articles
Country / State or ProvinceSpain
Subject(s) Heating, ventilation and climate
Broad subject area(s) Chemical safety
Browse category(ies) Surface treatment
Ventilation