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Document ID (ISN)66428
CIS number 96-988
ISSN - Serial title 0014-0139 - Ergonomics
Year 1995
Convention or series no.
Author(s) Lotens W.A., Pieters A.M.J.
Title Transfer of radiative heat through clothing ensembles
Bibliographic information June 1995, Vol.38, No.6, p.1132-1155. Illus. 24 ref.
Abstract A mathematical model was designed to calculate the temperature and dry heat transfer in the various layers of a clothing ensemble, and the total heat loss of a person who is irradiated for a certain fraction of his or her area. The clothing ensemble that is irradiated by an external heat source is considered to be composed of underclothing, trapped air, and outer fabric. The model was experimentally tested with heat balance methods, using subjects, varying the activity, wind, and radiation characteristics of the outer garment of two-layer ensembles. In two experiments the subjects could only give off dry heat because they were wrapped in plastic film. The model appeared to be correct within about 1°C and 10Wm-2. In a third experiment, sweat evaporation was also taken into account, showing that the resulting physiological heat load of 10 to 30% of the intercepted additional radiation is compensation by additional sweating. The resulting heat strain was fairly mild. The mathematical model is a valid tool for the investigation of heat transfer through two-layer ensembles in radiant environments.
Descriptors (primary) thermal balance; heat load; heat transfer; mathematical models; clothing
Descriptors (secondary) human experiments
Document type D - Periodical articles
Country / State or ProvinceNetherlands
Subject(s) Heating, ventilation and climate
Broad subject area(s) Physical hazards
Browse category(ies) Heat and cold