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

CISDOC database

Document ID (ISN)31612
CIS number 79-1017
ISSN - Serial title 0509-6510 - Prace Centralnego instytutu ochrony pracy
Year 1978
Convention or series no.
Author(s) Gliński M.
Title Influence of disturbing currents on local exhaust ventilation systems
Original title Wpływ strumieni zakłˇcających na skuteczność działania ssawek urządzeń wentylacji miejscowej [in Polish]
Bibliographic information 1978, Vol.28, No.96, p.45-60. Illus. 17 ref.
Abstract Design of exhaust hoods is an important factor in the collection of pollutants close to the source. A classification of mobile hoods used in welding is presented, and a method and a test set up especially designed for study of the influence of disturbing currents on the air velocity distribution in the range of action of the hood are described. Using isotachs the changes caused by disturbances are shown. The results confirmed the usefulness of the method, especially for studying small hoods. Further research to determine "exhaust spectra" of hoods is proposed to give designers a more solid basis for increasing the efficiency of ventilation systems.
Descriptors (primary) exhaust hoods; ventilation design; welding fumes; local exhaust
Descriptors (secondary) aerodynamics; design of equipment; airflow measurement
Document type -
Subject(s) Heating, ventilation and climate
Broad subject area(s)
Browse category(ies) Ventilation