Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (09): 150-155.doi: 10.13475/j.fzxb.20201207206

• Apparel Engineering • Previous Articles     Next Articles

Prediction of thermal comfort for bedding system based on four-node thermoregulation model

PAN Mengjiao1, LU Yehu1,2,3(), WANG Min2   

  1. 1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215006, China
    2. Key Laboratory of Clothing Design & Technology, Ministry of Education, Donghua University, Shanghai 200051, China
    3. Wujiang Wanwang Textile Co., Ltd., Suzhou, Jiangsu 215226, China
  • Received:2020-12-28 Revised:2021-06-04 Online:2021-09-15 Published:2021-09-27
  • Contact: LU Yehu E-mail:yhlu@suda.edu.cn

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Abstract:

To optimize the design of bedding systems, the difference of physiological parameters during different sleeping periods was considered. In this research, a four-node thermoregulation model was established and verified, the change of core temperature and skin temperature was predicted, and the effects of ambient temperature, thermal resistance of bedding system and contact area between human body and bedding system on thermal comfort for sleeping human were investigated. The results show that core temperature and skin temperature both increase with the increasing of ambient temperature, whereas core temperature during NREM in low temperature environment is hardly affected by the ambient temperature. The influence of thermal resistance of bedding system on core temperature is not significant, while the skin temperature is kept increasing with thermal resistance of bedding system. The core temperature and skin temperature both increase with the increasing of the contact area between human body and bedding system, but the core temperature is less affected. The results of this study will provide scientific basis for design of high-performance home textile products.

Key words: temperature regulation, thermal comfort, four-node model, bedding system, home textile product

CLC Number: 

  • TS941.75

Tab.1

Input parameters of model"

被服系统参数 人体参数 环境参数 皮肤各部分的表面积占比αi
被褥热阻/(m2·K·W-1) 床垫热阻/(m2·K·W-1) 身高/m 体重/kg 温度/℃ 湿度/% α1/% α2/% α3/%
0.958 0.690 1.607 53.7 4.93 57.0 4.3 47.6 48.1

Fig.1

Comparisons between the experimental and predicted results of Tcr and Tsk"

Fig.2

Contact conditions between sleeping human and bedding system"

Tab.2

Design table for test"

实验
编号		 环境温
度/℃		 被褥热阻/
(m2·K·W-1)		 睡眠
状态		 α1/% α2/% α3/%
N1 17 0.9 20.4 31.5 48.1
N2 20 0.9 20.4 31.5 48.1
N3 23 0.9 B 20.4 31.5 48.1
N4 20 0.5 20.4 31.5 48.1
N5 20 1.3 20.4 31.5 48.1
N6 20 0.9 A 11.1 40.8 48.1
N7 20 0.9 C 31.1 20.8 48.1

Fig.3

Comparisons of Tcr and Tsk for sleeping body with different ambient temperatures"

Fig.4

Comparisons of Tcr and Tsk for sleeping body with different thermal resistances of bedding system"

Fig.5

Comparisons of Tcr and Tsk for sleeping body with different contact areas between human and bedding"

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