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Thermo-mechanical investigation of the multi-layer thermocline tank for parabolic trough power plants

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  • Elfeky, Karem Elsayed
  • Mohammed, Abubakar Gambo
  • Ahmed, Naveed
  • Wang, Qiuwang

Abstract

In applications of solar energy, thermal ratcheting is a crucial topic connected to the periodic performance of dual-phase thermocline storage tank. In order to investigate this phenomenon, a detailed simulation of a thermocline reservoir that includes both the hybrid tank wall and the varied filling zone is necessary. The thermo-mechanical characteristic of the cascaded layers storage tank for parabolic trough power plants is examined in the current work using one parametric study (dimensionless temperature difference) to determine the impact of changing the melting temperature of the phase change material (PCMs) layers. Experimental work from earlier studies is utilized to validate the numerical outcomes currently being presented. The results showed that structures-VIII and XIV have acceptable thermal performance, but ineffective mechanical performance since the normalized stress values were greater than one. The structure-XIII has the best overall efficiency of 79.58%, followed by structures-II, III, and XI, with performance levels of 70.82%, 67.83%, and 66.85%, respectively. The lowest overall efficiency attains by structure-XII, which equals 22.21%. The energy retrieved, overall efficiency, capacity ratio, and utilization ratio for the best scenario “structures- XIII ″ are 188.2 MWh, 79.58%, 44.34%, and 40.5%, respectively, based on the charging/discharging duration.

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  • Elfeky, Karem Elsayed & Mohammed, Abubakar Gambo & Ahmed, Naveed & Wang, Qiuwang, 2023. "Thermo-mechanical investigation of the multi-layer thermocline tank for parabolic trough power plants," Energy, Elsevier, vol. 268(C).
    • Handle: RePEc:eee:energy:v:268:y:2023:i:c:s0360544223001433
    DOI: 10.1016/j.energy.2023.126749
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    References listed on IDEAS

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    1. Yunshen Zhang & Yun Guo & Jiaao Zhu & Weijian Yuan & Feng Zhao, 2024. "New Advances in Materials, Applications, and Design Optimization of Thermocline Heat Storage: Comprehensive Review," Energies, MDPI, vol. 17(10), pages 1-41, May.
    2. Wang, Wei & Shuai, Yong & He, Xibo & Hou, Yicheng & Qiu, Jun & Huang, Yudong, 2023. "Influence of tank-to-particle diameter ratio on thermal storage performance of random packed-bed with spherical macro-encapsulated phase change materials," Energy, Elsevier, vol. 282(C).

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