Clothing, assessment and effects on thermophysiological responses of man working in humid heat

Article Abstract:

A comparison of whole body and local sweating, and body temperatures of clothed and unclothed individuals working on a cycloergometer at 50 watts in warm environments with ambient humidity level (Pa) increases reveals that for the same Pa enhancement, more sweating occurs in clothed subjects than in unclothed ones due to hidromeiois on the skin of the unclothed individual. Analysis of sweat accumulation in clothes reveals the existence of a close correlation between core temperature thrift threshold and the decrease in evaporative sweat efficiency for clothed individuals. Clothing improves the efficiency of body cooling.

Physiological aspects, Influence, Work environment, Protective clothing

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Effects of two kinds of clothing made from hydrophobic and hydrophilic fabrics on local sweating rates at an ambient temperature of 37 degrees centigrade

Article Abstract:

An experiment was carried out on six female students, aged from 21 to 28 years, to find the effects of clothing made from hydrophobic and hydrophilic fabrics on the sweating physiology in environmental conditions where only the mechanisms of wet heat loss could occur. This experiment was done under the influence of environmental conditions of 37 degree centigrade, and 60 percent relative humidity with an air velocity of 0.1 meters per second. The results are discussed in terms of thermal physiology and clothing sciences.

Cotton (Fiber), Cotton, Evaporation, Polyester fibers

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Effects of moisture absorption in clothing on the human heat balance

Article Abstract:

A theory for addressing the relationship between human heat balance and the moisture absorption of clothing was tested with an apparently effective computer model. Results showed that vapour resistance is higher in the cold than in the heat, likely due to the difference in sweat distribution associated with such extremes. The model also suggests that partitional calorimetry is not an adequate method of determining clothing characteristics in non-steady states.

Models, Textiles, Moisture, Moisture in textiles, Heat-transfer media, Heat transfer media

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