Optimization of the thermal insulation characteristics of phase change wall in cold region

Zhongzhu Qiu; Yalin Wang; Shengnan Li

doi:10.1117/12.2620391

29 November 2021 Optimization of the thermal insulation characteristics of phase change wall in cold region

Zhongzhu Qiu, Yalin Wang, Shengnan Li

Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 120802X (2021) https://doi.org/10.1117/12.2620391
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China

Abstract

Phase change energy storage has become one of the most important means to improve the efficiency of energy use in buildings. In order to reduce building energy consumption, a mathematical model of the one-dimensional phase change wall in an office building in cold region is developed, with the MATLAB program for solving the model. Using the validated mathematical model, the heat transfer process of the phase change wall is simulated in Beijing, China, a representative city in the cold climate zone. The results of the study show that in the cold region (Beijing), the heat transfer is minimized in the whole year when the outer layer is made of paraffin wax (C16-C28) with a melting point of 43°C and the inner layer is made of 4cm thick octanoic acid with a melting point of 16.3°C. Compared with non-phase change walls, the heat transfer on the inner surface decreases by 16.6 % in summer conditions and by 18 % in winter conditions. The simulation results provide a feasible solution for optimizing the thermal performance of phase change walls in cold region.

Citation Download Citation

Zhongzhu Qiu, Yalin Wang, and Shengnan Li "Optimization of the thermal insulation characteristics of phase change wall in cold region", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 120802X (29 November 2021); https://doi.org/10.1117/12.2620391

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