Effect of the Filling Liquid Ratio on the Thermal Performance of a Novel Thermal Diode with Wick  

作　　者：LI Zhiyong MING Tingzhen ZHANG Heyu ZHAO Sitong WANG Qinggang CAI Cunjin YIN Kui FANG Yueping WU Yongjia 

机构地区：[1]School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan,430070,China [2]Sanya Science and Education Innovation Park,Wuhan University of Technology,Sanya,572004,China [3]Deparment of Four Station,Logistics Academy,Xuzhou,221000,China [4]School of Energy,Construction and Environment,Coventry University,Priory Street,Coventry,CV15FB,UK

出　　处：《Journal of Thermal Science》2024年第2期396-407,共12页热科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.52208124);Hubei Provincial Key Research and Design Project(Grant No.2020BAB129);Scientific Research Foundation of Wuhan University of Technology(Grant No.40120237 and 40120551)。

摘　　要：The application of thermal diodes,which allow heat to flow more readily in one direction than the other,is an important way to reduce energy consumption in buildings and enhance the battery heat dissipation of electric vehicles.Depending on various factors including the specific design,materials used,and operating conditions,the convective thermal diode can exhibit the best thermal rectification effect in intended applications compared to the other thermal diodes.In this study,a novel convective thermal diode with a wick was proposed based on the phase change heat transfer mechanism.This design takes advantage of both capillary forces provided by the wick and gravity to achieve enhanced unidirectional heat transfer performance for the designed convective thermal diode.The effect of the filling liquid ratio on the thermal performance of the thermal diode was experimentally investigated,which was in good agreement with the theoretical analysis.The research findings showed that with an optimal liquid filling ratio of 140%,the thermal diode with a wick can achieve a better thermal rectification ratio when subjected to a lower heating power,and the maximum thermal rectification ratio of 21.76 was experimentally achieved when the heating power of the thermal diode was 40 W.

关 键 词：filling liquid ratio thermal diode wick structure gravity 

分 类 号：TN31[电子电信—物理电子学] TK124[动力工程及工程热物理—工程热物理]