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An experimental study on the heat transfer performance of a prototype molten-salt rod baffle heat exchanger for concentrated solar power

Author

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  • Qiu, Yu
  • Li, Ming-Jia
  • Wang, Wen-Qi
  • Du, Bao-Cun
  • Wang, Kun

Abstract

A prototype rod baffle shell-and-tube heat exchanger (RB-STHX) was proposed for concentrating solar power (CSP). For investigating the heat transfer of molten salt in the shell side, the RB-STHX was experimentally studied. A ternary salt Hitec and an oil were adopted as the heat transfer fluids in the shell and tube sides, respectively. Experimental data was firstly obtained when the salt temperature is 212.7–279.6 °C with the Prandtl number of 14.2–23.3. The flow of the salt is turbulent with the Reynolds number (Re) of 2697–12,517. The average heat transfer rate ranges from 117 kW to 364 kW. Then, the experimental data was compared with two exiting correlations. The results indicate that an average error of −9.1∼-12.3% between the Nusselt numbers predicted by the two correlations and the experiment data was found. Finally, for predicting the heat transfer of the molten salt in the shell side more accurately, two modified heat transfer correlations which show satisfactory agreements with the experimental data were developed. The average deviations under different Re between the experiment data and the modified correlations are around ±4.4∼±4.6%. Results from current study offer reliable experimental data, useful correlations and helpful guidance for the design of realistic molten-salt RB-STHXs in the CSP systems.

Suggested Citation

  • Qiu, Yu & Li, Ming-Jia & Wang, Wen-Qi & Du, Bao-Cun & Wang, Kun, 2018. "An experimental study on the heat transfer performance of a prototype molten-salt rod baffle heat exchanger for concentrated solar power," Energy, Elsevier, vol. 156(C), pages 63-72.
    • Handle: RePEc:eee:energy:v:156:y:2018:i:c:p:63-72
    DOI: 10.1016/j.energy.2018.05.040
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    Citations

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    Cited by:

    1. He, Ya-Ling & Qiu, Yu & Wang, Kun & Yuan, Fan & Wang, Wen-Qi & Li, Ming-Jia & Guo, Jia-Qi, 2020. "Perspective of concentrating solar power," Energy, Elsevier, vol. 198(C).
    2. Lai, Xiaotian & Yu, Minjie & Long, Rui & Liu, Zhichun & Liu, Wei, 2019. "Dynamic performance analysis and optimization of dish solar Stirling engine based on a modified theoretical model," Energy, Elsevier, vol. 183(C), pages 573-583.
    3. Safari, Vahid & Abolghasemi, Hossein & Kamkari, Babak, 2021. "Experimental and numerical investigations of thermal performance enhancement in a latent heat storage heat exchanger using bifurcated and straight fins," Renewable Energy, Elsevier, vol. 174(C), pages 102-121.
    4. Wang, Anming & Liu, Jiping & Liu, Ming & Li, Gen & Yan, Junjie, 2019. "Dynamic modeling and behavior of parabolic trough concentrated solar power system under cloudy conditions," Energy, Elsevier, vol. 177(C), pages 106-120.
    5. Dong, Yan & Wang, Fuqiang & Zhang, Yaqi & Shi, Xuhang & Zhang, Aoyu & Shuai, Yong, 2022. "Experimental and numerical study on flow characteristic and thermal performance of macro-capsules phase change material with biomimetic oval structure," Energy, Elsevier, vol. 238(PB).
    6. Li, Nianqi & Chen, Jian & Cheng, Tao & Klemeš, Jiří Jaromír & Varbanov, Petar Sabev & Wang, Qiuwang & Yang, Weisheng & Liu, Xia & Zeng, Min, 2020. "Analysing thermal-hydraulic performance and energy efficiency of shell-and-tube heat exchangers with longitudinal flow based on experiment and numerical simulation," Energy, Elsevier, vol. 202(C).
    7. Wu, Yunna & Zhang, Buyuan & Wu, Chenghao & Zhang, Ting & Liu, Fangtong, 2019. "Optimal site selection for parabolic trough concentrating solar power plant using extended PROMETHEE method: A case in China," Renewable Energy, Elsevier, vol. 143(C), pages 1910-1927.
    8. Linares, José I. & Montes, María J. & Cantizano, Alexis & Sánchez, Consuelo, 2020. "A novel supercritical CO2 recompression Brayton power cycle for power tower concentrating solar plants," Applied Energy, Elsevier, vol. 263(C).
    9. Chen, Jian & Li, Nianqi & Ding, Yu & Klemeš, Jiří Jaromír & Varbanov, Petar Sabev & Wang, Qiuwang & Zeng, Min, 2020. "Experimental thermal-hydraulic performances of heat exchangers with different baffle patterns," Energy, Elsevier, vol. 205(C).
    10. Liu, Hanyu & Xi, Kun & Xie, Zhihui & Lu, Zhuoqun & Chen, Huawei & Zhang, Jian & Ge, Yanlin, 2023. "Constructal design of double-layer asymmetric flower baffles," Energy, Elsevier, vol. 280(C).
    11. Yao, Lingxiang & Xiao, Xianyong & Wang, Yang & Yao, Xiaoming & Ma, Zhicheng, 2022. "Dynamic modeling and hierarchical control of a concentrated solar power plant with direct molten salt storage," Energy, Elsevier, vol. 252(C).
    12. Du, Shen & Li, Ming-Jia & He, Ya-Ling & Shen, Sheng, 2021. "Conceptual design of porous volumetric solar receiver using molten salt as heat transfer fluid," Applied Energy, Elsevier, vol. 301(C).

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