Zemzem, Mohamed, Hallé, Stéphane et Vinches, Ludwig.
2023.
« Thermal insulation of protective clothing materials in extreme cold conditions ».
Safety and Health at Work, vol. 14, nº 1.
pp. 107-117.
Compte des citations dans Scopus : 7.
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Résumé
Background Thermophysiological comfort in a cold environment is mainly ensured by clothing. However, the thermal performance and protective abilities of textile fabrics may be sensitive to extreme environmental conditions. This article evaluated the thermal insulation properties of three technical textile assemblies and determined the influence of environmental parameters (temperature, humidity, and wind speed) on their insulation capacity. Methods Thermal insulation capacity and air permeability of the assemblies were determined experimentally. A sweating-guarded hotplate apparatus, commonly called the “skin model,” based on International Organization for Standardization (ISO) 11092 standard and simulating the heat transfer from the body surface to the environment through clothing material, was adopted for the thermal resistance measurements. Results It was found that the assemblies lost about 85% of their thermal insulation with increasing wind speed from 0 to 16 km/h. Under certain conditions, values approaching 1 clo have been measured. On the other hand, the results showed that temperature variation in the range (−40°C, 30°C), as well as humidity ratio changes (5 g/kg, 20 g/kg), had a limited influence on the thermal insulation of the studied assemblies. Conclusion The present study showed that the most important variable impacting the thermal performance and protective abilities of textile fabrics is the wind speed, a parameter not taken into account by ISO 11092.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur Hallé, Stéphane |
| Affiliation: | Génie mécanique |
| Date de dépôt: | 10 mars 2023 19:10 |
| Dernière modification: | 12 juill. 2023 14:03 |
| URI: | https://espace2.etsmtl.ca/id/eprint/26269 |
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