Scientific conference presentation - Mohamed Zemzem - March 2022

The Institute of Textile Science
2022 Virtual Symposium
09-03-2022
Title:
Thermal insulation capacity of cold protective clothing materials in extreme environmental conditions
Summary:
Thermophysiological comfort in a cold environment is mainly ensured by clothing. However, thermal performance and protective abilities of textile fabrics could be sensitive to extreme weather conditions.
In this regard, thermal insulation capacity and air permeability of three technical textile assemblies were experimentally assessed. A sweating guarded hot plate apparatus, commonly called “Skin Model” and based on ISO 11092 standard, was adopted for the thermal resistance measurements. Besides, the influence of environmental parameters (temperature, humidity and wind speed) on their insulation capacity was determined.
It was found that the assemblies lose about 85% of their thermal insulation with increasing wind speed from 0 to 16 km per hour. Under certain conditions, values approaching 1 clo have been measured. On the other hand, the results showed that temperature variation from -40 to 30 °C as well as humidity changes have a limited influence on the thermal insulation of the studied assemblies.