Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (06): 118-124.doi: 10.13475/j.fzxb.20190603707

• Apparel Engineering • Previous Articles     Next Articles

Thermal function effectiveness and location of heating device in cold protective clothing

WU Daiwei1, LI Hongyan2, DAI Yanyang1, SU Yun1,3, WANG Yunyi1,3()   

  1. 1. Fashion and Art Design Institute, Donghua University, Shanghai 200051, China
    2. Electric Power Research Institute, State Grid Jilin Electric Power Co., Ltd., Changchun, Jilin 130021, China
    3. Key Laboratory of Clothing Design and Technology, Ministry of Education,Donghua University, Shanghai 200051, China
  • Received:2019-06-17 Revised:2020-03-04 Online:2020-06-15 Published:2020-06-28
  • Contact: WANG Yunyi E-mail:wangyunyi@dhu.edu.cn

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Abstract:

In current research on using heating device in cold protective clothing, it is found that there was a lack of overall design on heating position and quantitative analysis on heating temperature range. In order to obtain the optimal combination of heating device and cold protective clothing, a commercial clothing heating device was employed to meet human thermal comfort and improve heating efficiency. Various combination experiments were carried out at -11.8 ℃ through a thermal manikin test (the manikin was standing still). The results reveal that five body zones including upper chest, shoulder, abdomen, forearm and calf are the suitable heating places. It is recommended to heat up outside the lining of clothing liner, and the suitable heating temperature range for each location is given as 37-40 ℃ for abdomen, 40-44 ℃ for shoulder, 44-49 ℃ for upper chest, over 49 ℃ for forearm and calf. Better heating effect is obtained with higher clothing thermal resistance. The results provid data foundations for the design and development of thermal functions for heating clothing.

Key words: low temperature environment, heating device, cold protective clothing, combination design

CLC Number: 

  • TS941.73

Tab.1

Experimental sample composition"

样本
编号		 隔热值/
clo		 服装
构成		 用途 名称 纤维成分
A 4.24 外套 面料 防静电布 涤/棉
里料 涂银布 涤纶
内胆 面料 春亚纺 涤纶
絮填料 新雪丽棉 涤纶/
聚丙烯
里料 涂银布 涤纶
B 3.18 外套 面料 - 涤纶
絮填料 - 涤纶
里料 涂银布 涤纶

Fig.1

A brief schematic diagram of heating device"

Tab.2

Temperature set values and corresponding calibration temperatures of heating device℃"

温度设定值 53 48 43 38 33 30
校准温度值 49 44 40 37 32 31

Fig.2

Surface temperature changes of different zones of manikin without heating"

Fig.3

Surface temperature changes of different zones with different location of heating device in layers of sample A (A1:inside lining of clothing liner; A2:outside lining of clothing liner)"

Tab.3

Temperature set values of heating device at different time periods"

时间段/min 温度设定值/℃
0~53 53
53~63 48
63~73 43
73~93 38
93~110 停止加热

Fig.4

Effect of different temperature set values of heating device on surface temperature of upper limb zone"

Fig.5

Effect of different temperature set values of heating device on surface temperature of torso zone"

Fig.6

Effect of different temperature set values of heating device on surface temperature of lower limb zone"

Tab.4

Four-level heating temperature recommendation℃"

部位 档位 加热温度范围
设定值 校准值
腹部 第一级 38~43 37~40
肩部 第二级 43~48 40~44
前胸 第三级 48~53 44~49
小腿、前臂 第四级 ≥53 ≥49

Fig.7

Surface temperature changes of upper body zones of manikin wearing sample A (a) and B (b) with and without heating"

Tab.5

Comparison of heating effects of sample A and B"

区段
名称		 0~30 min表面
温度变化
速度/(℃·h-1)		 加热30 min时
的表面温
度值/℃		 较不加热情况
下表面温度的
提高幅度/%
A B A B A B
肩部 -0.84 -3.38 28.60 26.78 8.54 26.8
后中 2.86 -0.18 34.54 32.61 24.90 35.5
腰部 -1.94 -2.02 31.87 29.96 20.60 22.1
下背 0.72 -2.60 33.33 31.29 20.10 25.0
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