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Document ID (ISN)104331
CIS number 05-651
ISBN(s) 0-7176-2925-2
Year 2005
Convention or series no. HSE Research Report 288
Author(s) Bullman S., Chan N.
Health and Safety Executive
Title Development of a ventilator test procedure to take account of external wind conditions
Bibliographic information HSE Books, P.O. Box 1999, Sudbury, Suffolk CO10 2WA, United Kingdom, 2005. vi, 105p. Illus. Price: GBP 30.00. Downloadable version free of charge.
Internet access [in English]
Abstract This project investigated the viability of enhancing an existing ventilator test procedure to account for the presence of a wind. Test results showed considerable variation in vent performance when vents were subjected to crosswind flows across a range of face angles. Many designs exhibited strong variation with face angle, while some exhibited significant effective area reductions when the crosswind was introduced. The present findings indicate that the maximum bulk wind speed required for an assessment of vent performance is 21 m/s. Measurements should be taken at five face angles of -90░, -45░, 0░, 45░ and 90░. In conclusion, the test procedure described here should form the basis for the characterization of vent units with cowls that are currently available and those that seek BSI approval in the future.
Descriptors (primary) wind load; equipment testing; ventilation design; United Kingdom
Descriptors (secondary) report; airflow measurement; glossary; description of technique; approval
Document type E - Books, reports, proceedings
Country / State or ProvinceUnited Kingdom
Subject(s) Heating, ventilation and climate
Broad subject area(s) Chemical safety
Browse category(ies) Ventilation
Natural phenomena