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A new approach to mitigate intense temperature gradients in ceramic foam solar receivers

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  • Nimvari, Majid Eshagh
  • Jouybari, Nima Fallah
  • Esmaili, Qadir

Abstract

The present study aims to present an approach to mitigate the maximum solid temperature and its gradient inside the porous material in volumetric solar receivers. To this end, a porous receiver with non-uniform air velocity at the inlet is considered in the present study. Comparison of the results with those obtained for a porous receiver with uniform air velocity at the inlet reveals the ability of the new velocity distribution in reducing the maximum solid temperature and its gradient within the solid phase. The temperature distribution is obtained for different porosities and pore diameters in the porous receivers with uniform and non-uniform air velocity distributions at the inlet. It is observed that the proposed distribution of air velocity at the inlet decreases the maximum solid temperature within the porous receiver even for small porosities and pore diameters of porous media.

Suggested Citation

  • Nimvari, Majid Eshagh & Jouybari, Nima Fallah & Esmaili, Qadir, 2018. "A new approach to mitigate intense temperature gradients in ceramic foam solar receivers," Renewable Energy, Elsevier, vol. 122(C), pages 206-215.
    • Handle: RePEc:eee:renene:v:122:y:2018:i:c:p:206-215
    DOI: 10.1016/j.renene.2018.01.117
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    References listed on IDEAS

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    Cited by:

    1. Guilong Dai & Jiangfei Huangfu & Xiaoyu Wang & Shenghua Du & Tian Zhao, 2023. "A Review of Radiative Heat Transfer in Fixed-Bed Particle Solar Receivers," Sustainability, MDPI, vol. 15(13), pages 1-37, June.
    2. Guene Lougou, Bachirou & Shuai, Yong & Zhang, Hao & Ahouannou, Clément & Zhao, Jiupeng & Kounouhewa, Basile Bruno & Tan, Heping, 2020. "Thermochemical CO2 reduction over NiFe2O4@alumina filled reactor heated by high-flux solar simulator," Energy, Elsevier, vol. 197(C).
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    5. Jouybari, Nima Fallah & Lundström, T. Staffan, 2020. "Performance improvement of a solar air heater by covering the absorber plate with a thin porous material," Energy, Elsevier, vol. 190(C).
    6. Zhu, Qibin & Xuan, Yimin, 2019. "Improving the performance of volumetric solar receivers with a spectrally selective gradual structure and swirling characteristics," Energy, Elsevier, vol. 172(C), pages 467-476.
    7. Barreto, Germilly & Canhoto, Paulo & Collares-Pereira, Manuel, 2020. "Parametric analysis and optimisation of porous volumetric solar receivers made of open-cell SiC ceramic foam," Energy, Elsevier, vol. 200(C).
    8. Avila-Marin, A.L. & Fernandez-Reche, J. & Martinez-Tarifa, A., 2019. "Modelling strategies for porous structures as solar receivers in central receiver systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 111(C), pages 15-33.
    9. Akba, Tufan & Baker, Derek & Mengüç, M. Pınar, 2023. "Gradient-based optimization of micro-scale pressurized volumetric receiver geometry and flow rate," Renewable Energy, Elsevier, vol. 203(C), pages 741-752.

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