ISO 9920: 1995 Ergonomics of the thermal environment - Estimation of the thermal insulation and evaporative resistance of a clothing ensemble
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This International Standard specifies methods for estimating the thermal characteristics (resistance to dry heat loss and evaporative heat loss) in steady-state conditions for a clothing ensemble based on values for known garments, ensembles and textiles.
The influence of body movement and air penetration on the thermal insulation and evaporative resistance is discussed.
This International Standard
- does not deal with other effects of clothing, such sutas adsorption of water, buffering, tactile
comfort; 302)
- does not take into account the influence of rain and snow on the thermal characteristics;
- does not consider special protective clothing (water-cooled suits, ventilated suits, heated clothing);
- does not deal with the separate insulation on different parts of the body and discomfort due to the
asymmetry of a clothing ensemble.