Experimental study on random heat transfer of phase change heat storage device

2018 International Conference on New Energy and Future Energy System

Li, Z.Y.^1 ; Pan, Di^1 ; Xiao, Y.B.^1 ; Zhao, Y.Q.^1 ; Gao, J.L.^1

School of Civil Engineering, North China University of Technology, Beijing

100144, China^1

关键词: Experimental research;    Geometric properties;    Heat of phase transitions;    Heat transfer process;    Internal heat source;    Phase change heat storages;    Phase change heat transfer;    Processing technologies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/188/1/012098/pdf
DOI  :  10.1088/1755-1315/188/1/012098

来源: IOP

【 摘 要 】

In the study of the heat conduction of phase change materials, due to the inherent properties, the deviation of the measured data and the processing technology of the phase change material, the uncertainty of the parameters of the material properties and geometric properties of the phase change materials exist inevitably. But at the present stage, there are very few experimental researches content of uncertain heat transfer in phase change thermal storage devices. The purpose of this paper is to study the uncertain heat transfer process of phase change heat transfer experimentally. The influence of latent heat of phase transition on the heat transfer process is mainly analyzed. The latent heat of different phase transitions is transformed into internal heat sources, and simulated by electric heating. The thermal response of phase-change heat transfer is analyzed by constructing the electric heating quantity under different probability distribution and uncertainty. The experimental results show that when the uncertainty is the same as 1/7, the difference of the standard deviation between two mean values (560 W and 630 W) is not large. The standard deviation and the mean correlation of the experimental values are not significant under the same uncertainty.