The influence of the number of thermal layers on the clothing insulation of a cold-protective ensemble
The required thermal insulation in cold conditions and time limits for cold exposure can be predicted by the thermal index IREQ/DLE (Insulation REQuired), described in ISO/TR-11079. The thermal insulation of a clothing ensemble can be measured with a thermal manikin or estimated according to ISO 9920. The basic thermal insulation of single garments (Iclu) can be summated to estimate the basic insu
