ISO 20852:2020 PDF

Scope: This document specifies the test method for determining the amount of heat transferred through clothing fabrics by the combined dry and evaporative heat emission under simulated and specified conditions. This test method can be used for fabrics, films, coatings, foams and leathers including multilayer assemblies used in hot environment or in activities. The application of this measurement technique is restricted to a maximum amount of total heat transfer which depend on the dimensions and construction of the apparatus used (e.g. about 1200 W/m2 for the maximum specifications of the equipment according to ISO 11092).

ISO 20852:2020 Referenced Document

ISO 11092:2014 Textiles - Physiological effects - Measurement of thermal and water-vapour resistance under steady-state conditions (sweating guarded-hotplate test)
ISO 3696 Water for analytical laboratory use; Specification and test methods

2020 ISO 20852:2020 Textiles — Determination of the total heat transfer through textiles in simulated environments