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Theoretical modeling of process heat transfer mechanism in U-shaped molten salt heat exchanger

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  • Wang, Yanhong
  • Hou, Teng
  • Cui, Changjie
  • Li, Qi

Abstract

U-shaped tube molten salt heat exchanger (MSHE) plays an important role for further improving peak shaving capacity of coal-fired unit (CFU) coupled extraction thermal storage system (ETSS). Nevertheless, existing experimental approach cannot reveal process heat transfer characteristics (HTCs) of MSHE. Meanwhile, investigation exploring factors restricting heat transfer enhancement for MSHE in theory is still vacant. In this paper, a theoretical method for MSHE was developed to determine process mechanism of heat transfer to capture perspective of enhanced heat transfer. Heat transfer performance of U-tube MSHE was theoretically unpacked. Deliberating work was executed with inlet water flow rate of 69–139 kg/s, water temperature of 120–170 °C, salt flow rate of 28–58 kg/s and salt temperature of 350–400 °C. Whereupon, the process mechanism of heat transfer inside MSHE was obtained with redeeming lack of theoretical exploration.

Suggested Citation

  • Wang, Yanhong & Hou, Teng & Cui, Changjie & Li, Qi, 2024. "Theoretical modeling of process heat transfer mechanism in U-shaped molten salt heat exchanger," Energy, Elsevier, vol. 308(C).
    • Handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224025696
    DOI: 10.1016/j.energy.2024.132795
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    References listed on IDEAS

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