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Research Article

Parametric analysis of a packed bed thermal storage device with phase change material capsules in a solar heating system application

Long Gao,  Gegentana, Junchao Bai, Baizhong Sun( ), Deyong Che, Shaohua Li
School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China
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Abstract

The goal of this study is to investigate the effect of key design parameters on the thermal performance of the packed bed heat storage device by numerical calculation. A one-dimensional, non-equilibrium packed bed latent heat storage mathematical model was established and the applicability of the model was verified. The results demonstrate that the inlet temperature of the heat transfer fluid (HTF) had the greatest influence on each index. When the inlet temperature increased from 333 K to 363 K, exergy destruction increased threefold, effective heat storage time decreased by 67%, effective heat storage increased by 38%, and exergy efficiency decreased by 11%. The decrease of the capsule diameter had a positive effect on each evaluation index. According to the sensitivity analysis, the order of importance of each parameter within their variation range was HTF inlet temperature, HTF flow rate, PCM capsule size and PCM initial temperature.

Keywords

performance evaluationpacked bed thermal energy storagesolar heating systemparametric analysis

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Building Simulation
Volume 14 Issue 3,
June 2021
Pages 523-533
DOI: 10.1007/s12273-020-0686-2
Cite this article:
Gao L, Gegentana, Bai J, et al. Parametric analysis of a packed bed thermal storage device with phase change material capsules in a solar heating system application. Building Simulation, 2021, 14(3): 523-533. https://doi.org/10.1007/s12273-020-0686-2

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Received: 10 December 2019
Accepted: 30 June 2020
Published: 08 September 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
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