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

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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"

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