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Document ID (ISN)56934
CIS number 91-2020
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1991
Convention or series no.
Author(s) White M.K., Glenn S.P., Hudnall J., Rice C., Clark S.
Title The effectiveness of ice- and Freon-based personal cooling systems during work in fully encapsulating suits in the heat
Bibliographic information Mar. 1991, Vol.52, No.3, p.127-135. Illus. 24 ref.
Abstract The use of cooling garments in conjunction with fully encapsulating suits can reduce heat strain for workers in hot environments. Ice- and Freon-based cooling garments were examined during heat exercises in persons wearing a U.S. Coast Guard chemical response suit (CRS). Responses of 9 healthy men were measured during moderate exercise at 30% of their maximal oxygen consumption in an environmental chamber maintained at 33.9░C and 82% relative humidity. The study describes four randomly assigned experimental conditions. The subjects performed repeated rest/work intervals for 45 minutes, followed by a 10 minute recovery period. Physiological responses were measured at 1 minute intervals during the tests. The study results indicate statistically significant reductions in mean skin temperature and heart rate in the trials where the cooling garments were worn. Significant differences were also seen in lower weight loss and shorter rectal temperature recovery time. However, neither cooling system fully demonstrated an advantage over the other.
Descriptors (primary) protective clothing; heat load; hot workplaces; heat protective clothing; heat; personal protective equipment
Descriptors (secondary) body-core temperature; skin temperature; heart rate monitoring; exercise tests; workload assessment
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Heating, ventilation and climate
Broad subject area(s) Physical hazards
Browse category(ies) Personal protection
Heat and cold
Protective clothing