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Experimental study on the influence of gas-blowing flow rate on the cold discharge characteristics of external ice-melting ice storage system

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  • Zhang, Yafei
  • Liu, Zedong
  • Chen, Hua
  • Li, Guangkang
  • Zhang, Jiaming

Abstract

External ice-melting ice storage system has the advantage of fast cold discharge. However, the instability of outlet water temperature limits its practical application. In this paper, an experimental bench is built for testing cold discharge performance of the external ice-melting ice storage system combined with a gas-blowing device based on theoretical analysis. The influence of different gas-blowing flow rates on the vertical temperature distribution inside the ice storage tank, outlet water temperature, cold discharge rate, instantaneous cold discharge capacity, and total cold discharge capacity is analyzed and compared during the cold discharge process by experiments. The experimental results show that as the gas-blowing flow rate increases, the convective heat transfer between the water and ice in the water space of the ice storage tank is enhanced, the outlet water temperature decreases, and the cold discharge rate increases. Through comprehensive analysis, it is found that for a small external ice-melting ice storage system in this experiment, the outstanding comprehensive performance can be achieved with 1L/min gas-blowing flow rate, which. The average outlet water temperature during the latent heat phase is 1.9 °C lower and the cold discharge rate is 34.8 % higher than that without gas blowing.

Suggested Citation

  • Zhang, Yafei & Liu, Zedong & Chen, Hua & Li, Guangkang & Zhang, Jiaming, 2024. "Experimental study on the influence of gas-blowing flow rate on the cold discharge characteristics of external ice-melting ice storage system," Renewable Energy, Elsevier, vol. 230(C).
    • Handle: RePEc:eee:renene:v:230:y:2024:i:c:s0960148124009327
    DOI: 10.1016/j.renene.2024.120864
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    References listed on IDEAS

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    1. Lee, Alex H.W. & Jones, Jerold W., 1996. "Laboratory performance of an ice-on-coil, thermal-energy storage system for residential and light commercial applications," Energy, Elsevier, vol. 21(2), pages 115-130.
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