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Transient performance analysis of concentrating solar thermal power plant with finned latent heat thermal energy storage

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  • Raul, Appasaheb
  • Saha, Sandip K.
  • Jain, Mohit

Abstract

This paper presents the effect of finned multitube shell and tube latent heat thermal energy storage system (LHTES) on the dynamic performance of the Rankine cycle based solar thermal power plant. A widely available phase change material (PCM), sodium nitrate is kept in the shell side. As PCM and HTF have low thermal conductivities, fins are attached on the inner and outer surfaces of the HTF tubes. A simplified thermal resistance network-based energy equation coupled with the enthalpy technique, is developed for analysing heat transfer in the LHTES. The effects of number of fins (Np = 12, 24, 36 and 48) and fin thickness (tf = 1, 2, 3 and 4 mm) on the PCM side of LHTES on the overall performance of the solar power plant for generating electricity after sunset are investigated for an Indian condition on cloudy days. The addition of fins in LHTES is found to reduce the time for continuous power generation. The marginal changes in melt fraction of PCM and turbine output power are found for the number of fins and fin thickness greater than 36 and 2 mm, respectively. The maximum discharge efficiency occurs at the number of fins of 48.

Suggested Citation

  • Raul, Appasaheb & Saha, Sandip K. & Jain, Mohit, 2020. "Transient performance analysis of concentrating solar thermal power plant with finned latent heat thermal energy storage," Renewable Energy, Elsevier, vol. 145(C), pages 1957-1971.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:1957-1971
    DOI: 10.1016/j.renene.2019.07.117
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    Cited by:

    1. Zhao, Yaohua & Liu, Zichu & Quan, Zhenhua & Jing, Heran & Yang, Mingguang, 2022. "Experimental investigation and multi-objective optimization of ice thermal storage device with multichannel flat tube," Renewable Energy, Elsevier, vol. 195(C), pages 28-46.
    2. Kumar, Ashish & Saha, Sandip K., 2021. "Performance study of a novel funnel shaped shell and tube latent heat thermal energy storage system," Renewable Energy, Elsevier, vol. 165(P1), pages 731-747.
    3. Lu, Bohui & Zhang, Yongxue & Sun, Dong & Jing, Xiaolei, 2021. "Experimental investigation on thermal properties of paraffin/expanded graphite composite material for low temperature thermal energy storage," Renewable Energy, Elsevier, vol. 178(C), pages 669-678.
    4. Huang, Xinyu & Yao, Shouguang & Yang, Xiaohu & Zhou, Rui, 2022. "Melting performance assessments on a triplex-tube thermal energy storage system: Optimization based on response surface method with natural convection," Renewable Energy, Elsevier, vol. 188(C), pages 890-910.
    5. Lu, Shilei & Lin, Quanyi & Liu, Yi & Yue, Lu & Wang, Ran, 2022. "Study on thermal performance improvement technology of latent heat thermal energy storage for building heating," Applied Energy, Elsevier, vol. 323(C).
    6. Zhu, Yanlong & Lu, Jie & Yuan, Yuan & Wang, Fuqiang & Tan, Heping, 2020. "Effect of radiation on the effective thermal conductivity of encapsulated capsules containing high-temperature phase change materials," Renewable Energy, Elsevier, vol. 160(C), pages 676-685.
    7. Qicheng Chen & Junting Wu & Kanglong Sun & Yingjin Zhang, 2022. "Numerical Study of Heat Transfer Enhancement by Arc-Shaped Fins in a Shell-Tube Thermal Energy Storage Unit," Energies, MDPI, vol. 15(20), pages 1-23, October.
    8. Zhou, Dan & Wu, Shaowen & Wu, Zhigen & Yu, Xingjuan, 2021. "Thermal performance analysis of multi-slab phase change thermal energy storage unit with heat transfer enhancement approaches," Renewable Energy, Elsevier, vol. 172(C), pages 46-56.

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