文献类型：期刊文献

英文题名：Numerical investigation of heat transfer in a garment convective cooling system

作者：Zhang, Yijie[1,2];Jia, Juhong[3];Guo, Ziyi[2]

机构：[1]Shaoxing Univ, Shangyu Coll, Shaoxing 312300, Zhejiang, Peoples R China;[2]Zhejiang Sci Tech Univ, Sch Fash Design & Engn, Hangzhou 310018, Zhejiang, Peoples R China;[3]Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China

年份：2022

卷号：9

期号：1

外文期刊名：FASHION AND TEXTILES

收录：SCI-EXPANDED(收录号：WOS:000742654200001)、、Scopus(收录号：2-s2.0-85122938571)、WOS

语种：英文

外文关键词：Clothing microclimates; Human thermal comfort; Wearable cooling system; Convective heat transfer; CFD

外文摘要：A personal microclimate management system is designed to maintain thermal comfort which allows people to overcome a harsh environment. It consists of several micro-fans placed in the garment side seam to provide cooling air. The computational fluid dynamics method was used to simulate the three-dimensional model and analysis the influence of fan's number and air gap distance. The obtained results depict that the introduced cool airflow will find its way along paths with flow resistance minimized and exhaust through several separated exit. The body heat flux is taken away at the same time. The convection effect is enhanced by the increase in the fans' numbers, but the fans' cooling effect varies a lot because of various air gap distances. When the air gap is small enough, the cooling air impact the body surface directly and causes fierce heat loss. While the air gap distance is large enough, the heat transfer along the skin surface could be enhanced by the eddy flow which is existed in the air gap between body and garment. These phenomena can maintain the body's thermal comfort in a suitable range.