BS ISO 20852:2020
$102.76
Textiles. Determination of the total heat transfer through textiles in simulated environments
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 16 |
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 1 200 W/m2 for the maximum specifications of the equipment according to ISO 11092).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Symbols and units |
| 11 | 5 Principle 6 Apparatus 7 Materials 7.1 Water 7.2 Liquid barrier 8 Test specimens 9 Test procedure 9.1 Test conditions |
| 12 | 9.2 Procedure 9.2.1 Determination of Rct0 9.2.2 Measurement of total thermal resistance Rct for a test specimen 9.2.3 Measurement of intrinsic thermal resistance of the test specimen, Rcf 9.2.4 Measurement of the evaporative resistance including the air layer on the surface of the liquid barrier without a test specimen, Ret0A |
| 13 | 9.2.5 Measurement of the apparent total evaporative resistance RetA 9.2.6 Measurement the intrinsic evaporative resistance provided by the test specimen alone RefA |
| 14 | 9.2.7 Determination of the total heat transfer Qt 10 Test report |
