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

• Published in: IOP conference series. Earth and environmental science 2018-10, Vol.188 (1), p.12098
• Main Authors: Li, Z Y, Pan, Di, Xiao, Y B, Zhao, Y Q, Gao, J L
• Format: Article
• Language: English
• Subjects: Conduction heating; Conductive heat transfer; Electric heating; Heat sources; Heat storage; Heat transfer; Latent heat; Material properties; Phase change materials; Phase transitions; Probability distribution; Standard deviation; Thermal energy; Thermal response; Thermal storage; Uncertainty
• ISSN: 1755-1307; 1755-1315; 1755-1315
• DOI: 10.1088/1755-1315/188/1/012098

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.