Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (08): 88-94.doi: 10.13475/j.fzxb.20190707907

• Apparel Engineering • Previous Articles     Next Articles

Thermal-wet comfort evaluation of head and torso ventilation of pipe garment

ZHANG Zhaohua1,2,3(), LI Luyao1, AN Ruiping1   

  1. 1. College of Fashion and Design, Donghua University, Shanghai 200051, China
    2. Key Laboratory of Clothing Design and Technology, Ministry of Education, Donghua University, Shanghai 200051, China
    3. Shanghai International Institute of Design & Innovation, Tongji University, Shanghai 200092, China
  • Received:2019-07-31 Revised:2020-05-12 Online:2020-08-15 Published:2020-08-21

RichHTML

6

PDF (PC)

161

Abstract:

The torso and head are the sweating parts in hot environment, and the thermal sensation of the head has a great impact on overall thermal sensation. Therefore, when designing ventilation cooling garments, both the torso and head must be taken into account. The purpose of this study was to compare the cooling effect of only the torso cooling (V) and the torso plus head cooling (VH) methods in two exercise trials. A pipe ventilation vest and a ventilating cap were made and evaluated on eight male subjects in an artificial climate chamber with a temperature of 30 ℃ and a relative humidity of 40%. The physiological responses of the subjects and the subjective sensation votes were recorded during the whole test. The results show that with the total ventilation constant at 9 L/s, the VH method significantly reduces the skin temperature of the forehead and has a positive effect on promoting heat dissipation in the head. VH method helps reducing the subjects' thermal, wet and discomfort sensation during the exercise. Especially it significantly relieves the overall feeling of heat. However, there is no statistically significant difference in wet and discomfort sensations between V and VH method.

Key words: head ventilation and cooling, pipe ventilation garment, body temperature regulation, functional garment, thermal-wet comfort property

CLC Number: 

  • TS941.16

Fig.1

Pipe connection method of ventilation garment. (a) Vest; (b) Hat"

Fig.2

Air supply equipment of ventilation garment"

Fig.3

Location of temperature recorder on skin. (a) Front; (b) Back"

Fig.4

Subjective rating scales. (a) Thermal rating scale;(b) Wetness rating scale; (c) Comfort rating scale"

Fig.5

Comparison of average skin temperature"

Fig.6

Comparison of forehead skin temperature"

Fig.7

Comparison of average trunk temperature"

Fig.8

Comparison of ear temperature"

Fig.9

Comparison of heart rate"

Tab.1

Amount of sweat and sweat evaporation rate"

试验组 出汗量/g 汗液蒸发率/%
V组 678.6±190.3 91.5±4.7
VH组 610.2±103.3 90.1±5.8

Fig.10

Comparison of thermal sensation score changes"

Fig.11

Comparison of wetness sensation score changes"

Fig.12

Comparison of changes in comfort score"

Fig.13

Extent of effect of thermal and wetness sensation on comfort"

[1] NUNNELEY S A. Heat stress in protective clothing:interactions among physical and physiological fac-tors[J]. Scandinavian Journal of Work Environment & Health, 1989,15:52-57.
[2] 郑国忠. 高温高湿环境下相关人群的生理应激响应研究[D]. 天津:天津大学, 2013: 1-147.
ZHENG Guozhong. Study on physiological responses of relaive population in hot and humid environments[D]. Tjianjin:Tianjin University, 2013: 1-147.
[3] 吕石磊, 朱能, 冯国会, 等. 高温高湿热环境下人体耐受力研究[J]. 沈阳建筑大学学报(自然科学版), 2007,23(6):982-985.
LÜ Shilei, ZHU Neng, FENG Guohui, et al. Experimental research on people's heat endurance in high temperature and humidity environments[J]. Journal of Shenyang Jianzhu University (Natural Science Edition), 2007,23(6):982-985.
[4] GONZALEZ J A, BERGLUND L G, KOLKA M A, et al. Forced ventilation of protective garments for hot industries[C]// Proceedings of the Sixth International Thermal Manikin and Modeling Meeting. Hong Kong:The Hong Kong Polytechnic University, 2006: 165-169.
[5] LAI D D, WEI F R, LU Y H, et al. Evaluation of a hybrid personal cooling system using a manikin operated in constant temperature mode and thermoregulatory model control mode in warm conditions[J]. Textile Research Journal, 2017,87(1):46-56.
doi: 10.1177/0040517515622152
[6] YAZDI M M, SHEIKHZADEH M. Personal cooling garments:a review[J]. The Journal of The Textile Institute, 2014,105(12):1231-1250.
doi: 10.1080/00405000.2014.895088
[7] 庞诚, 顾鼎良. 头部的温度调节及其选择性致冷[J]. 航空学报, 1995,16(1):7-11.
PANG Cheng, GU Dingliang. Thermo regulation and its selective cooling in the head[J]. Acta Aeronautica Et Ast Ronautica Sinica, 1995,16(1):7-11.
[8] SMITH C J, HAVENTH G. Body mapping of sweating patterns in male athletes in mild exercise-induced hyperthermia[J]. European Journal of Applied Physiology, 2010,111(7):1391-1404.
pmid: 21153660
[9] 丁千茹. 非均匀环境下局部热感觉对整体热反应的影响[D]. 大连:大连理工大学, 2008: 1-61.
DING Qianru. Effect of local thermal sensation on human responses in non-uniform thermal environment[D]. Dalian:Dalian University of Technology, 2008: 1-61.
[10] UNDERWOOD L, JERMY M, ELOI P, et al. Thermal comfort and drag of a streamlined cycling helmet as a function of ventilation hole placement[J]. Sports Engineering, 2015,18(4):241-248.
doi: 10.1007/s12283-015-0181-7
[11] KUMAR K S, ANSHUMAN D A, RAJ H, et al. New design and fabrication of smart helmet[J]. IOP Conference Series: Materials Science and Engineering, 2018,402(1):12-55.
[12] 梁国治, 周孟颖, 张奋奋. 矿用降温安全帽的研制[J]. 煤矿现代化, 2014(3):83-85.
LIANG Guozhi, ZHOU Mengying, ZHANG Fenfen. Development of mine cooling helmet[J]. Coal Mine Modernization, 2014(3):83-85.
[13] WICKWIRE P J, BISHOP P A, GREEN J M, et al. Physiological and comfort effects of a commercial "cooling cap" worn under protective helmets[J]. Journal of Occupational and Environmental Hygiene, 2009,6(8):455-459.
pmid: 19412861
[14] GRISHAM S C, HILL D W, CURETON K J, et al. Diurnal variations in responses to exercise of morning types and evening types[J]. The Journal of Sports Medicine and Physical Fitness, 1988,28(3):213-221.
pmid: 3230901
[15] BOIS D D, BOIS E F D. A formula to estimate the approximate surface area if height and weight be known[J]. Archives of Internal Medicine, 1916,17, 863-871.
[16] WYNDHAM C H, MITCHELL D. Comparison of weighting formulas for calculating mean skin tempera-ture[J]. Journal of Applied Physiology, 1969,26(5):616-622.
doi: 10.1152/jappl.1969.26.5.616 pmid: 5781615
[17] LIN L Y, WANG F, KUKLANE K, et al. A laboratory validation study of comfort and limit temperatures of four sleeping bags defined according to EN 13537 (2002)[J]. Applied Ergonomics, 2013,44(2):321-326.
doi: 10.1016/j.apergo.2012.09.001 pmid: 23021632
[18] RACCUGLIA M, SALES B, HEYDE C, et al. Clothing comfort during physical exercise: determining the critical factors[J]. Applied Ergonomics, 2018,73:33-41.
doi: 10.1016/j.apergo.2018.05.014 pmid: 30098640
[19] 宇传华. SPSS与统计分析[M]. 北京: 电子工业出版社, 2007: 242-253.
YU Chuanhua. SPSS and statistical analysis[M]. Beijing: Publishing House of Electronics Industry, 2007: 242-253.
[1] WANG Li-Xin, FAN Xue-Rong, SUN You-Chang, CHAI Lei. Comparative study on thermal-wet comfort property of leather garment materials with different pores [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(8): 97-102.
[2] ZENG Yanzhang;DENG Zhongshan;LIU Jing. Micro-fan-array system enabled air conditioning suit for cooling human body [J]. JOURNAL OF TEXTILE RESEARCH, 2007, 28(6): 100-105.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd