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

RichHTML

23

PDF (PC)

143

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"

[1] 潘冬梅. 睡眠环境人体热舒适的实验研究[D]. 上海:同济大学, 2009: 1-2.
PAN Dongmei. Experimental study on human thermal comfort in sleeping environment[D]. Shanghai: Tongji University, 2009: 1-2.
[2] FANGER P O. Thermal comfort: analysis and applications in environmental engineering[M]. Copenhagen: Danish Technical Press, 1972:1-43.
[3] GAGGE A P. A standard predictive index of human response to the thermal environment[J]. Ashrae Transactions, 1986, 92:709-731.
[4] PAN D M, CHAN M Y, DENG S M, et al. A four-node thermoregulation model for predicting the thermal physiological responses of a sleeping person[J]. Building and Environment, 2012, 52:88-97.
doi: 10.1016/j.buildenv.2011.12.020
[5] SONG W, LU Y, LIU Y, et al. Effect of partial-body heating on thermal comfort and sleep quality of young female adults in a cold indoor environment[J]. Building and Environment, 2020, 169, 106585.
doi: 10.1016/j.buildenv.2019.106585
[6] BULCAO C F, FRANK S M, RAJA S N, et al. Relative contribution of core and skin temperatures to thermal comfort in humans[J]. Journal of Thermal Biology, 2016, 25(1/2):147-150.
doi: 10.1016/S0306-4565(99)00039-X
[7] 刘蔚巍, 连之伟, 邓启红, 等. 人体热舒适客观评价指标[J]. 中南大学学报(自然科学版), 2011(2):521-526.
LIU Weiwei, LIAN Zhiwei, DENG Qihong, et al. Objective evaluation indices of human thermal comfort[J]. Journal of Central South Universi-ty(Science and Technology), 2011(2):521-526.
[8] LU Y, WANG F, WAN X, et al. Clothing resultant thermal insulation determined on a movable thermal manikin: part II: effects of wind and body movement on local insulation[J]. International Journal of Biometeorology, 2015, 59:1487-1498.
doi: 10.1007/s00484-015-0959-0
[9] 潘黎. 基于人体生理参数的清醒和睡眠状态的热舒适研究[D]. 上海:上海交通大学, 2012: 23-112.
PAN Li. Thermal comfort of waking and sleeping state based on physiological parameters of human body[D]. Shanghai: Shanghai Jiao Tong University, 2012: 23-112.
[10] MILLSJ N, MINORS S D, WATERHOUSE J M. The effect of sleep upon human circadian rhythms[J]. Chronobiologia, 1978, 5(1):14-27.
[11] LIU Y, SONG C, WANG Y, et al. Experimental study and evaluation of the thermal environment for sleeping[J]. Building and Environment, 2014, 82:546-555.
doi: 10.1016/j.buildenv.2014.09.024
[12] CARSKADON M A, DEMENT W C, KRYGER M, et al. Normal human sleep: an overview[J]. Principles and Practice of Sleep Medicine, 2011, 5:16-26.
[13] OKAMOT-MIZUNO K, MIZUNO K. Effects of thermal environment on sleep and circadian rhythm[J]. Journal of Physiological Anthropology, 2012, 31(1):14.
doi: 10.1186/1880-6805-31-14
[14] CAMPBELL S. Is there an intrinsic period of the circadian clock?[J]. Science, 2000, 288(5469):1174-1175.
doi: 10.1126/science.288.5469.1174
[1] LIU Yang, XIA Zhaopeng, WANG Liang, FAN Jie, ZENG Qiang, LIU Yong. Development status and trend of antivirus medical protective clothing [J]. Journal of Textile Research, 2021, 42(09): 195-202.
[2] FANG Jian, REN Song, ZHANG Chuanxiong, CHEN Qian, XIA Guangbo, GE Can. Electroactive fibrous materials for intelligent wearable textiles [J]. Journal of Textile Research, 2021, 42(09): 1-9.
[3] ZHANG Zhaohua, LI Luyao, AN Ruiping. Thermal-wet comfort evaluation of head and torso ventilation of pipe garment [J]. Journal of Textile Research, 2020, 41(08): 88-94.
[4] LIU Yuping, LU Yehu, WANG Laili. Research progress on thermal comfort of bedding system [J]. Journal of Textile Research, 2020, 41(01): 190-196.
[5] YANG Jian, ZHANG Guoqing, LIU Guojin, KE Xiaoming, ZHOU Lan. Preparation of composite phase change microcapsules and its application on cotton fabrics [J]. Journal of Textile Research, 2019, 40(10): 127-133.
[6] ZHAO Mengmeng, KE Ying, WANG Faming, LI Jun. Research and development trend of ventilation clothing thermal comfort [J]. Journal of Textile Research, 2019, 40(03): 183-188.
[7] . Relationship between static and dynamic thermal insulation of local or whole body and its model [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(07): 111-115.
[8] . Influence of clothing adopting ventilation system on thermal comfort [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(10): 94-97.
[9] . Measurement and analysis on thermal properties of men’s knitted underwear [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(12): 92-96.
[10] .  Thermal comfort property of Baerhu Mongolian robes [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(01): 123-126.
[11] . Research on thermal comfort in cotton textile workshop [J]. Journal of Textile Research, 2015, 36(03): 54-57.
[12] . Model for thermal comfort of sleeping bags [J]. Journal of Textile Research, 2015, 36(03): 105-109.
[13] . Influence on asymmetrical thermal insulation of Tibetan robe on human thermal comfort [J]. JOURNAL OF TEXTILE RESEARCH, 2014, 35(4): 105-0.
[14] WANG Xiuqing;ZHANG Chang;GAO Meng. Thermal comfort of single-direction-sweat-transmitting fabric [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(10): 40-44.
[15] CHEN Yisong;XU Jun;FAN Jintu. Sweating design in different thermal manikins and their measurement methods [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(8): 130-134.
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