Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (02): 147-152.doi: 10.13475/j.fzxb.20181101306

• Apparel Engineering • Previous Articles     Next Articles

Predictions of physiological reaction and skin burn of firefighter exposing to thermal radiation

SU Yun1,2,3, YANG Jie4, LI Rui4, SONG Guowen4, LI Jun1,2,3(), ZHANG Xianghui1,2,3   

  1. 1. Fashion & Art Design, Donghua University, Shanghai 200051, China
    2. Protective Clothing Research Center, Donghua University, Shanghai 200051, China
    3. Key Laboratory of Clothing Design and Technology, Ministry of Education, Donghua University, Shanghai 200051, China
    4. Iowa State University, Iowa 50011, USA
  • Received:2018-11-05 Revised:2018-11-16 Online:2019-02-15 Published:2019-02-01
  • Contact: LI Jun E-mail:lijun@dhu.edu.cn

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Abstract:

In order to improve the evaluation criteria on thermal protective performance of firefighting protective clothing, the prediction model on physiological reaction and skin burn of firefighter exposing to thermal radiation was developed based on mechanisms of heat transfer in clothing and human thermal physiological regulation. The changing trend and prediction deviation of mean skin temperature and core temperature were analyzed by the thermal protective performance tester of clothing. The results demonstrat that the mean skin temperature and core temperature predicted by the model are slightly larger than the values measured by the experiment, but the overall trend presents higher consistence with the experimental results. Additionally, firefighters in the heat exposure subject to threats of both skin burn and heat stress. The skin burn is caused during the exposure while it is more likely to produce heat stress after the end of exposure, which is attributed to lag effect of heat transfer. Therefore, the skin burn and the heat stress should be both used to more precisely characterize and improve the thermal protective performance of firefighting protective clothing.

Key words: physiological reaction, skin burn, thermal protective performance, firefighting protective clothing, thermal radiation

CLC Number: 

  • X924.3

Fig.1

Calculation process of heat transfer model"

Tab. 1

Basic properties of different-layer fabrics"

类型 成分 密度/
(kg·m-3)		 厚度/
mm		 比热/
(J·kg-1·
K-1)		 导热
系数/
(W·m-1·
K-1)
外层 100%Nomex 342 0.6 1 570 0.047
防水透
汽层		 80%Nomex/20%
Kevlar (PTFE镀膜)		 122 0.9 1 160 0.034
隔热层 100%Nomex 123 2.2 1 350 0.035

Fig.2

Thermal protective performance tester"

Fig.3

Comparison of mean skin temperature between experiment and simulant results. (a) Without an air gap; (b) With an air gap"

Fig.4

Comparison of core temperature between experiment and simulated results. (a) Without an air gap; (b) With an air gap"

Fig.5

Comparison of time to skin burn between experimental test and model prediction"

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