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Experimental study on a pilot-scale medium-temperature latent heat storage system with various fins

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  • Lv, Laiquan
  • Zou, Yang
  • Huang, Shengyao
  • Wang, Xinyi
  • Shao, Rongyu
  • Xue, Xue
  • Rong, Yan
  • Zhou, Hao

Abstract

In this article, a pilot-scale latent heat storage system loaded with 5674.7 kg medium-temperature phase change material (PCM), having four groups of tubes embedded with various fins (longitudinal, H-shaped, spiral, and without fins), was designed and built. During the charging process, the smooth tube had the highest outlet temperature, followed by the tubes with longitudinal, H-shaped, and spiral fins, indicating that the spiral fins had the best heat transfer performance while the smooth's was the worst. The temperature difference in the vertical direction of the thermal energy storage unit was more significant than that in the horizontal direction. Besides, the thermal insulation performance test indicated that the temperature of PCM in the upper part decreased more slowly than that in the lower part due to the charging of the latent heat system being conducted from top to down. Moreover, after charging for 6.5 h, the accumulative energy and the mean power of the tubes with longitudinal, H-shaped, spiral, and without fins were 500.67, 541.57, 567.35, 432.56 MJ, 21.39, 23.14, 24.24, and 18.48 kW, respectively. The calculated charging efficiency of the latent heat storage system was 66.48%.

Suggested Citation

  • Lv, Laiquan & Zou, Yang & Huang, Shengyao & Wang, Xinyi & Shao, Rongyu & Xue, Xue & Rong, Yan & Zhou, Hao, 2023. "Experimental study on a pilot-scale medium-temperature latent heat storage system with various fins," Renewable Energy, Elsevier, vol. 205(C), pages 499-508.
    • Handle: RePEc:eee:renene:v:205:y:2023:i:c:p:499-508
    DOI: 10.1016/j.renene.2023.01.089
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    Cited by:

    1. Augusto Cavargna & Luigi Mongibello & Marcello Iasiello & Nicola Bianco, 2023. "Analysis of a Phase Change Material-Based Condenser of a Low-Scale Refrigeration System," Energies, MDPI, vol. 16(9), pages 1-24, April.
    2. Huang, Shengyao & Lv, Laiquan & Rong, Yan & Zhou, Hao, 2024. "Experimental study on the thermal characteristics of a visualized shell-and-tube LHTES system at different endothermic and exothermic temperatures," Renewable Energy, Elsevier, vol. 221(C).
    3. Lv, Laiquan & Huang, Shengyao & Zou, Yang & Wang, Xinyi & Zhou, Hao, 2024. "Thermal performance investigation of a medium-temperature pilot-scale latent heat thermal energy storage system: The constant and step temperatures charging and discharging," Renewable Energy, Elsevier, vol. 225(C).

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