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Thermodynamic performance of air-cooled seasonal cold energy storage for space cooling: A case study

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  • Li, Tailu
  • Yu, Haifang
  • Qi, Jing
  • Yuan, Ye

Abstract

With the improvement in people's living standards, there is a growing demand for cooling, making it urgent to develop a low-carbon and energy-efficient refrigeration system. Therefore, this paper proposes an air-cooled seasonal energy storage (ACSES) system. The heat transfer model of the system is constructed. The impact of relevant parameters on the system's cold storage performance was analyzed. The results show that larger glycol flow rates, windward velocity, number of tube passes and tube rows, and the volume ratio of ethylene glycol to water (VR) are beneficial for improving cold storage performance. However, excessively large parameters do not significantly enhance cold storage performance. The influence of ambient temperature on cold storage performance is greater than that of ice thickness. When VR is 0.02, the cold storage performance is relatively superior. To demonstrate the energy-saving performance of the system, the energy consumption saving rate (ECSR) indicator was proposed. The ECSR of the ACSES system is 72.75 %. The system can significantly conserve resources and reduce energy consumption.

Suggested Citation

  • Li, Tailu & Yu, Haifang & Qi, Jing & Yuan, Ye, 2024. "Thermodynamic performance of air-cooled seasonal cold energy storage for space cooling: A case study," Renewable Energy, Elsevier, vol. 235(C).
    • Handle: RePEc:eee:renene:v:235:y:2024:i:c:s0960148124013387
    DOI: 10.1016/j.renene.2024.121270
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