Ni Xiaoyang, Yao Tianyu, Zhang Ying, Zhao Yijie, Hu Qin, Chan Albert P C
Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China.
School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China.
Materials (Basel). 2020 Apr 11;13(8):1801. doi: 10.3390/ma13081801.
In recent years, personal cooling has aroused much attention because it can achieve both localized high-level thermal comfort and build energy savings. In this study, a novel hybrid personal cooling vest (PCV) incorporated with phase change materials (PCMs) and ventilation fans was developed, and its efficacy was investigated by human trials in a hot-humid climate chamber. Three generally accepted indices (thermal load, ; thermal sensation, TS; and physiological strain index, PSI) and a new proposed index (cumulative heat storage, CHS) during human trials were comparatively studied between the two human trial groups, i.e., the PCV group (wearing the PCV) and the CON group (without PCV). Results found that TS, PSI, and CHS were significantly reduced by the PCV, which suggests that the PCV can significantly improve both the perceptual and physiological strain. In addition, a strong linear relationship ( = 0.8407) was found between the proposed index of CHS with PSI, which indicates the applicability and reliability of CHS for assessing physiological heat strain.
近年来，个人降温备受关注，因为它既能实现局部高水平的热舒适性，又能节省建筑能耗。在本研究中，开发了一种新型的集成相变材料（PCM）和通风风扇的混合式个人降温背心（PCV），并在炎热潮湿气候舱中通过人体试验研究了其功效。在两个人体试验组之间，即PCV组（穿着PCV）和CON组（不穿PCV），对人体试验期间三个普遍认可的指标（热负荷，TL；热感觉，TS；和生理应变指数，PSI）以及一个新提出的指标（累积蓄热，CHS）进行了比较研究。结果发现，PCV显著降低了TS、PSI和CHS，这表明PCV可以显著改善感知和生理应变。此外，在提出的CHS指标与PSI之间发现了很强的线性关系（R = 0.8407），这表明CHS在评估生理热应变方面的适用性和可靠性。
