Heat Transfer Properties of Cold Weather Liner and Jacket Systems Before and After Laundering.
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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The heat transfer properties of eight prototype cold weather liner wjacket systems were compared using the torso and arms sections of the sectional manikin. Evaluation of these liner wjacket systems was done by measuring the effects on the insulation clo and evaporative heat transfer coefficient of replacing the standard liner wjacket worn with a basic cold weather ensemble with each of the experimental liner wjacket combinations. These findings suggest that the basic differences existing among the linears are moderated by the addition of a jacket, which adds more or less insulation depending upon its fit in relation to the particular liner worn with it. Considering the insulation provided by all liner wjacket combinations laundered and unlaundered, the clo values for the torso-arms areas are within or - 7 of 4.5 clo the evaporative heat transfer coefficient values are within or - 11 of a value of 0.09. These evaluations were done before and after three military launderings. These comparisons between the heat transfer properties of these prototype liner wjacket systems before and after laundering indicate little differences between them when worn as components of a wet-cold ensemble.
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