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Numerical and Experimental Investigation on Heat Transfer Performance of a Solar single Storage tank

Journal of Thermal Science 2021年第5期30卷 1596-1606页

作者： MAO Qianjun LI Ying ZHANG Yamei ZHANG Chunzhi School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China

The single-tank latent heat thermal energy storage(LHTES)of solar energy mainly consists of two modules:the first one is the phase change material(PCM)module heated by solar energy;the second is a module of heat transfer between melted PCM and the user’s low-temperature *** paper mainly focuses on the former *** investigate the heat transfer performance of the paraffin-based solar single storage tank and find a more suitable experimental configuration,as basic research work,we established a single-tank thermal storage platform and then conducted a numerical simulation on the heat transfer process with *** result of numerical simulation shows that the test situation was basically reflected and the data agreed well with the experiment *** numerical simulation analysis is accurate and the method is *** obtain the heat transfer performance of paraffin in a single tank and strengthen heat transfer,the aspect ratio,the melting temperature of paraffin,and the heating power of the electric heater were analyzed based on *** results show that the heat transfer gets more uniform when the aspect ratio is *** results in an increase in the liquid fraction of 61.83%to 76.47%one hour after heating when the aspect ratio of the tank reduced from 2.8 to *** higher the melting temperature of paraffin,the longer it takes for PCM to reach a stable *** the curvature of liquid heating is greater than that of solid heating at the bottom *** the constant total work,the heating power has little effect on the heat transfer performance of the *** study will provide some reference value for the optimization design of single-tank LHTES systems in the future.

关键词： LHTES single tank PCM numerical simulation

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