Experimental investigation of the thermal insulation and evaporative resistance of protective clothing on a thermal manikin in a hot environment

FU Ming; WENG Wenguo; HAN Xuefeng

doi:10.16511/j.cnki.qhdxxb.2017.26.010

PDF(2900 KB)

Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (3) : 281-285,292. DOI: 10.16511/j.cnki.qhdxxb.2017.26.010

PHYSICS AND ENGINEERING PHYSICS

Experimental investigation of the thermal insulation and evaporative resistance of protective clothing on a thermal manikin in a hot environment

{{article.zuoZhe_EN}}

Author information +

History +

Abstract

The thermal insulation and evaporative resistance of clothing are the two main parameters related to clothing thermal comfort and protective ability. These two parameters, that all usually only measured for normal or cold atmospheric conditions, are measured here using a thermal manikin, one a commonly used and accurate method. This paper presents measurements of the thermal insulation and evaporative resistance of two-layer and three-layer protective clothing using the thermal manikin "NEWTON" in normal and hot environments. The tests show that, the parallel resistance method gives lower overall thermal resistances than the serial resistance method in hot environments. The tests also show that the thermal insulation resistances at high temperatures are 30%~38% lower than at normal conditions. The results also show that evaporative resistance of the two-layer clothing in the hot environment is less than for the warm condition and that the evaporative resistance of the three-layer clothing based on the mass loss method at high temperatures is less than in the normal environment, while the evaporative resistance based on the heat loss method in the hot environment is larger than that in the normal environment.

Key words

thermal insulation / evaporative resistance / thermal manikin / protective clothing / hot environment / thermal radiation

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

FU Ming, WENG Wenguo, HAN Xuefeng. Experimental investigation of the thermal insulation and evaporative resistance of protective clothing on a thermal manikin in a hot environment[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(3): 281-285,292 https://doi.org/10.16511/j.cnki.qhdxxb.2017.26.010

References

"[1] Havenith G, Holmer I, Parsons K. Personal factors in thermal comfort assessment:Clothing properties and metabolic heat production[J]. Energy and Buildings, 2002, 34(6):581-591. [2] Holmer I. Protective clothing in hot environments[J]. Industrial Health, 2006, 44(3):404-413. [3] Broede P, Kuklane K, Candas V, et al. Heat gain from thermal radiation through protective clothing with different insulation, reflectivity and vapour permeability[J]. International Journal of Occupational Safety and Ergonomics, 2010, 16(2):231-244. [4] McCullough E. The use of thermal manikins to evaluate clothing and environmental factors[C]//Environmental Ergonomics-The Ergonomics of Human Comfort, Health and Performance in the Thermal Environment. Stockholm, Sweden:Elsevier, 2005:403-407. [5] Wang F, Kuklane K, Gao C, et al. Development and validity of a universal empirical equation to predict skin surface temperature on thermal manikins[J]. Journal of Thermal Biology, 2010, 35(4):197-203. [6] Holmer I. Thermal manikin history and applications[J]. European Journal of Applied Physiology, 2004, 92(6):614-618. [7] Havenith G, Richards M, Wang X, et al. Apparent latent heat of evaporation from clothing:Attenuation and ""heat pipe"" effects[J]. Journal of Applied Physiology, 2008, 104(1):142-149. [8] Oliveira A, Gaspar A, Quintela D. Measurements of clothing insulation with a thermal manikin operating under the thermal comfort regulation mode:Comparative analysis of the calculation methods[J]. European Journal of Applied Physiology, 2008, 104(4):679-688. [9] Celcar D, Meinander H, Gersak J. Heat and moisture transmission properties of clothing systems evaluated by using a sweating thermal manikin under different environmental conditions[J]. International Journal of Clothing Science and Technology, 2008, 20(4):240-252. [10] ISO 9920. Ergonomics of the thermal environment-Estimation of thermal insulation and water vapour resistance of a clothing ensemble[S]. Geneva:International Organization for Standardization, 2009. [11] ASTM F 1291. Standard test method for measuring the thermal insulation of clothing using a heated manikin[S]. West Conshohocken:American Society for Testing and Materials, 2010. [12] Howie R. Assessment of the scientific validity of ISO 7933/EN 12515[C]//1st European Conference on Protective Clothing. Stockholm, Sweden:European Society on Protective Clothing, 2000:163-166. [13] ASTM F 2370. Standard test method for measuring the evaporative resistance of clothing using a sweating manikin[S]. West Conshohocken:American Society for Testing and Materials, 2010. [14] Wang F M, Gao C, Kuklane K, et al. A study on evaporative resistances of two skins designed for thermal manikin tore under different environmental conditions[J]. Journal of Fiber Bioengineering and Informatics, 2009, 1(4):211-215. [15] Song G, Paskaluk S, Sati R, Crown E, et al. Thermal protective performance of protective clothing used for low radiant heat protection[J]. Textile Research Journal, 2011, 81(3):311-323."