Heat Transfer of Heat Sinking Vest with Phase-change Material

• Published in: Chinese journal of aeronautics Vol. 24; no. 6; pp. 720 - 725
• Main Authors: QIU, Yifen, JIANG, Nan, WU, Wei, ZHANG, Guangwei, XIAO, Baoliang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.2011
• Subjects: enthalpy method; heat sinking vest; Heat transfer; Human; Mathematical analysis; Mathematical models; Phase change; phase-change material; Sweat; thermal protection; Thermoregulation; Vests; 人体体温; 散热; 数学模型; 温度分布; 相变传热; 相变材料; 背心; 计算结果; heat sinking vest; thermal protection; heat transfer; phase-change material; enthalpy method
• ISSN: 1000-9361
• DOI: 10.1016/S1000-9361(11)60084-8

To investigate thermal protection effects of heat sinking vest with phase-change material （PCM）, human thermoregulation model is introduced, and a thermal mathematical model of heat transfer with phase change has been developed with the enthalpy method. The uniform energy equation is constructed for the whole domain, and the equation is implicitly discreted by control volume and finite difference method. Then the enthalpy in each node is solved by using chasing method to calculate the tridiagonal equations, and the inner surface temperature of PCM could be obtained. According to the human thermoregulation model of heat sinking vest, the dynamic temperature distribution and sweat of the body are solved. Calculation results indicate that the change of core temperature matches the experimental result, and the sweat difference is small. This thermal mathematical model of heat transfer with phase change is credible and appropriate. Through comparing the dynamic temperature distribution and sweat of the body wearing heat sinking vest to results of the body not wearing this clothing, it is evident that wearing heat sinking vest can reduce the body heat load significantly.