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Journal of Thermal Science

热科学学报

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2025 , Vol. 34 >Issue 3: 982 - 995

DOI: https://doi.org/10.1007/s11630-025-2145-y

Experimental and Numerical Study of the 8°C Phase-Change Cooling Storage in Combined Cooling, Heating, and Power (CCHP) System

  • LI Mengfei ,
  • FENG Lejun ,
  • LEI Zhenbin ,
  • HUANG Weijia
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  • 1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
    2. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    3. Institute of New Energy, Dongguan, Dongguan 523808, China

Online published: 2025-05-06

Supported by

This work was supported by the National Key Research and Development Program of China (Grant No. 2023YFB4204000) and National Key Research and Development Program of China (Grant No. 2024YFB4206500).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025
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Abstract

In this study, the influence of the phase-change cooling storage system on integrating and controlling of the combined cooling, heating, and power system was analyzed through experiments and computational fluid dynamics simulations. The model of three-dimensional phase change material plate and cold storage tank was established and verified. The phase change material selected in this study is a eutectic salt with a phase change temperature of 8°C. The thermodynamic performance of the cold storage tank filled with phase change material plates was calculated, and the energy storage and release efficiency of the phase-change cooling storage system was analyzed. The results indicate that the phase change process correlates positively with the heat transfer fluid flow rate. The heat transfer fluid flow rates of 1.2 m3/h, 1.6 m3/h, and 2.0 m3/h all allow the phase change material within the encapsulation module to completely solidify within 8 hours; the flow rate required for melting is not less than 2.0 m3/h, and the highest energy storage efficiency is up to 72%. Considering the thermodynamic performance of the phase-change cooling storage system, it is recommended to use a heat transfer fluid flow rate of 1.6 m3/h for the cooling charge process and 2.0 m3/h for the cooling release process.

Key words： combined cooling, heating, and power system; phase change material plate; phase-change cooling storage system; energy storage efficiency

Cite this article

LI Mengfei , FENG Lejun , LEI Zhenbin , HUANG Weijia . Experimental and Numerical Study of the 8°C Phase-Change Cooling Storage in Combined Cooling, Heating, and Power (CCHP) System[J]. Journal of Thermal Science, 2025 , 34(3) : 982 -995 . DOI: 10.1007/s11630-025-2145-y

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Sponsored by: Institute of Engineering Thermophysics, Chinese Academy of Sciences　Publisher: Science Press

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