DESIGN AND EVALUATION OF A THREE-ZONE THERMAL MANIKIN HEAD

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Authors
  1. Osczevski, R.J.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
A thermal model of a human head was constructed from a rigid polyurethane foam head form with a skin of aluminum. Its surface is divided into three zones: the scalp, face and a small forehead/ears zone. The surface temperature and heat loss from each zone are individually controlled and monitored by a computer. Because it has independent zones that more closely correspond to the areas covered by helmets or face masks, the three-zone thermal manikin head is better suited to the measurement of the thermal insulation of headwear than a manikin head that has only one measurement zone. Single-zone heads measure the effective thermal resistance of the whole head, which usually includes large areas not covered by the item in question. Heat transfer from the entire manikin head was measured in a wind tunnel at wind speeds up to 7.3 m/s (26 km/h). The results compared favourably with whole head heat transfer from the head segment of other thermal manikins and from the human head. An equation was derived to describe the effect of wind on heat loss. The radiative heat transfer coefficient was also determined.
Keywords
Thermal instrumented manikins
Report Number
DCIEM-96-R-60 —
Date of publication
01 Oct 1996
Number of Pages
12
DSTKIM No
96-03776
CANDIS No
500325
Format(s):
Hardcopy;Document Image stored on Optical Disk

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