Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (11): 145-150.doi: 10.13475/j.fzxb.20181002707

• Apparel Engineering • Previous Articles     Next Articles

Influence of air gap on thermal and moisture properties of permeable protective clothing

HU Ziting1, ZHENG Xiaohui2, FENG Mingming1, WANG Yingjian1, LIU Li1(), DING Songtao2   

  1. 1. School of Fashion, Beijing Institute of Fashion Technology, Beijing 100029, China
    2. State Key Laboratory of NBC Protection for Civilian, Research Institute of Chemical Defense of Military Academic of Sciences, Beijing 100191, China
  • Received:2018-10-16 Revised:2019-07-17 Online:2019-11-15 Published:2019-11-26
  • Contact: LIU Li E-mail:fzyll@bift.edu.cn

RichHTML

14

PDF (PC)

250

Abstract:

In order to find the suitable clothing ease to improve thermal and moisture comfort of permeable nuclear biological and chemical (NBC) protective clothing, the wearing experimental procedure was designed. 5 pieces of clothing were observed under a normal temperature and static condition. Thermal manikin and three-dimensional scanning technology were used in a climate chamber to explore the influence of air gap on thermal and vapor resistance of NBC protective clothing. The results showed that with the increase of the ease of NBC protective clothing, the volume of air gap under the garment changes similarly with the average thickness of the air gap, and the air gap has a significant impact on total thermal resistance and vapor resistance. The total thermal resistance of the clothing increases with the increase of the air gap, and when the air gap exceeds by a certain volume, the thermal resistance of the clothing starts to drop. The total vapor resistance increases with the increase of air gap under the clothing.

Key words: nuclear biological and chemical protective clothing, clothing air gap, clothing ease, thermal manikin, thermal resistance, vapor resistance

CLC Number: 

  • TS941.17

Fig.1

Photo images of thermal manikin in different wearing conditions. (a) Basic garments and protective equipment; (b) NBC protective suit"

Fig.2

Permeable NBC protective clothing design. (a)Jacket;(b)Trouser"

Fig.3

Measurements of thermal manikin"

Tab.1

Measurements of permeable NBC protective clothing cm"

透气型NBC
防护服编号		 前身长 后身长 胸围 袖长 袖肥 裤长 腰围 臀围 横裆
T01 68.5 71.5 106 77.5 53 108 75 102 68.0
T02 68.5 71.5 114 77.5 56 108 84 110 72.5
T03 71.0 74.0 122 80.0 59 112 93 118 77.0
T04 71.0 74.0 130 80.0 62 112 100 126 81.5
T05 73.5 76.5 138 82.5 65 116 109 134 86.0

Fig.4

Clothing system scanning image. (a) Basic garments and equipments; (b) Permeable NBC protective suit; (c) Basic garments and equipments aligned with NBC protective suit"

Fig.5

Air gap volume and average thickness of permeable NBC protective clothing"

Fig.6

Cross-sections taken at critical body parts from aligned 3-D body scanning. (a) Chest; (b) Waist; (c) Hip; (d) Thigh; (e) Calves"

Tab.2

Total thermal and vapor resistance of different permeable NBC protective clothing"

NBC防护服
组合编号		 热阻/(m2·℃·W-1) 湿阻/(m2·Pa·W-1)
均值 标准差 均值 标准差
S01 0.327 0.006 54.017 0.312
S02 0.365 0.004 56.971 0.257
S03 0.373 0.001 57.744 0.365
S04 0.369 0.002 59.031 0.281
S05 0.365 0.005 59.702 0.139

Fig.7

Relationship between air gap volume and thermal resistance (a) & vapor resistance (b) of NBCprotective clothing"

[1] GAGGE A P, BURTON A C, BAZETT H C. A practical system of units for the description of the heat exchange of man with his environment[J]. Science, 1941,94(2445):428.
pmid: 17758307
[2] Il Y K, LEE C, LI P, et al. Investigation of air gaps entrapped in protective clothing systems[J]. Fire & Materials, 2002,26(3):121-126.
[3] 王云仪, 张雪, 李小辉, 等. 基于Geomagic软件的燃烧假人衣下空气层特征提取[J]. 纺织学报, 2012,33(11):102-106.
WANG Yunyi, ZHANG Xue, LI Xiaohui, et al. Geomagic-based characteristic extraction of air gap under clothing[J]. Journal of Textile Research, 2012,33(11):102-106.
[4] OLIVEIRA A V, GASPAR A R, QUINTELA D A. 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.
pmid: 18633635
张文欢, 钱晓明, 师云龙, 等. 服装局部热阻与总热阻的动静态关系及其模型[J]. 纺织学报, 2018,39(7):111-113.
ZHANG Wenhuan, QIAN Xiaoming, SHI Yunlong, et al. Relationship between static and dynamic thermal insulation of local or whole body and its model[J]. Journal of Textile Research, 2018,39(7):111-113.
[5] LIU Ying, DAI Xiaoqun. Measurement and calculation of clothing thermal resistance and evaporative resistance[J]. China Personal Protective Equipment, 2014(1):32-36.
[6] LU Yehu, WANG Faming, PENG Hui, et al. Effect of sweating set rate on clothing real evaporative resistance determined on a sweating thermal manikin in a socalled isothermal condition (T manikin=Ta=Tr)[J]. International Journal of Biometeorology, 2016,60(4):481-488.
doi: 10.1007/s00484-015-1029-3 pmid: 26150329
[7] HUANG Jianhua. Theoretical analysis of three methods for calculating thermal insulation of clothing from thermal manikin[J]. Annals of Occupational Hygiene, 2012,56(6):728-735.
doi: 10.1093/annhyg/mer118 pmid: 22798547
[8] LEE Y, HONG K, HONG S A. 3D quantification of microclimate volume in layered clothing for the prediction of clothing insulation[J]. Applied Ergonomics, 2007,38(3):349-355.
doi: 10.1016/j.apergo.2006.04.017 pmid: 16756938
[9] CUI Zhiying, FAN Jintu, WU Yuenshing. A comparative study on the effects of air gap wind and walking motion on the thermal properties of Arabian Thawbs and Chinese Cheongsams[J]. Ergonomics, 2015,59(8):999-1008.
pmid: 26653094
[10] CHEN Y S, FAN J, QIAN X, et al. Effect of garment fit on thermal insulation and evaporative resistance[J]. Textile Research Journal, 2004,74(8):742-748.
doi: 10.1177/004051750407400814
[1] SU Wenzhen, LU Yehu, WANG Fangming, SONG Wenfang. Development of novel air inflatable jacket and thermal insulating property evaluation [J]. Journal of Textile Research, 2020, 41(05): 140-145.
[2] . Thermal-moisture comfort of multilayered fabric systemsused as firefighting clothing [J]. Journal of Textile Research, 2019, 40(05): 119-123.
[3] . Research and development trend of ventilation clothing thermal comfort [J]. Journal of Textile Research, 2019, 40(03): 183-188.
[4] . Research on open local thermal resistance measurement system [J]. Journal of Textile Research, 2018, 39(09): 127-133.
[5] . Preparation of skin of thermal manikin Walter with human sweating ratio [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(05): 103-107.
[6] . Application status of thermoregulatory mode in clothing comfort evaluation with thermal manikin [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(07): 164-172.
[7] . Heat-moisture comfort of fire-fighter’s protective clothing materials [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(03): 122-125.
[8] . ABAQUS based finite element analysis of heat transfer through woven fabrics [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(09): 37-41.
[9] .  Thermal comfort property of Baerhu Mongolian robes [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(01): 123-126.
[10] . Development and performance evaluation of sportswear based on male body sweating pattern [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(01): 116-122.
[11] . System design analyses and experimental study on sweating guarded hotplates  [J]. Journal of Textile Research, 2015, 36(03): 128-134.
[12] . Influence on asymmetrical thermal insulation of Tibetan robe on human thermal comfort [J]. JOURNAL OF TEXTILE RESEARCH, 2014, 35(4): 105-0.
[13] . Comparative of heat insulation performance between commonly used high-temperature and low-temperature protective clothing [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(10): 121-0.
[14] . Surface temperature uniformity of thermal manikin [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(10): 113-116.
[15] WANG Yongjin;MOK Pikyin;LI Yi;KWOK Yilin. Effects of waist and lower limb movement on clothing ease design [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(3): 92-97.
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