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A comprehensive model of a cavity receiver to achieve uniform heat flux using air-carbon particles mixture

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  • Jin, Yabin
  • Fang, Jiabin
  • Wei, Jinjia
  • Wang, Xinhe

Abstract

A non-uniform solar flux leads to a non-uniform temperature distribution on the walls of cavity receiver. There exists a large temperature gradient, which can cause great challenges for the safety and high-efficiency operation of concentrating solar power system (CSP). To overcome this problem, micron particles with strong properties of absorption, scatter and radiation are added into the cavity receiver to improve the non-uniform heat flux distribution on the wall. In the present research, a coupled simulation method based on Monte Carlo Ray Tracing (MCRT) method and Finite Volume Method (FVM) is established to simulate the complex photo-thermal conversion process of a two-dimension square solar cavity filled with air-carbon particle mixtures. In the model, first, the solar heat flux distribution on the surface of cavity receiver is simulated by MCRT and the photo-thermal conversion process in the receiver is modeled by FVM. Then both are coupled in the cavity receiver by transferring the absorbed solar energy computed by MCRT to FVM, and this energy is applied as a source term for the energy equation in the FVM part. Based on the coupling model, the thermal performance and the temperature distribution characteristics on the wall of the cavity receiver are studied at various particle densities. The results show that as carbon particle density increases, the heat flux and temperature distribution on the walls of the receiver becomes more uniform and the effects of different L/D and N on σT of the receiver are further investigated.

Suggested Citation

  • Jin, Yabin & Fang, Jiabin & Wei, Jinjia & Wang, Xinhe, 2018. "A comprehensive model of a cavity receiver to achieve uniform heat flux using air-carbon particles mixture," Applied Energy, Elsevier, vol. 220(C), pages 616-628.
    • Handle: RePEc:eee:appene:v:220:y:2018:i:c:p:616-628
    DOI: 10.1016/j.apenergy.2018.03.142
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    References listed on IDEAS

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    1. Yu, Qiang & Wang, Zhifeng & Xu, Ershu, 2014. "Analysis and improvement of solar flux distribution inside a cavity receiver based on multi-focal points of heliostat field," Applied Energy, Elsevier, vol. 136(C), pages 417-430.
    2. Qiu, Yu & He, Ya-Ling & Cheng, Ze-Dong & Wang, Kun, 2015. "Study on optical and thermal performance of a linear Fresnel solar reflector using molten salt as HTF with MCRT and FVM methods," Applied Energy, Elsevier, vol. 146(C), pages 162-173.
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    Cited by:

    1. Jin, Yabin & Fang, Jiabin & Wei, Jinjia & Qaisrani, Mumtaz A. & Wang, Xinhe, 2019. "Thermal performance evaluation of a cavity receiver based on particle's radiation properties during the day time," Renewable Energy, Elsevier, vol. 143(C), pages 622-636.
    2. Tang, Heng & Xia, Liangfeng & Tang, Yong & Weng, Changxing & Hu, Zuohuan & Wu, Xiaoyu & Sun, Yalong, 2022. "Fabrication and pool boiling performance assessment of microgroove array surfaces with secondary micro-structures for high power applications," Renewable Energy, Elsevier, vol. 187(C), pages 790-800.
    3. Wu, Zan & Cao, Zhen & Sundén, Bengt, 2019. "Saturated pool boiling heat transfer of acetone and HFE-7200 on modified surfaces by electrophoretic and electrochemical deposition," Applied Energy, Elsevier, vol. 249(C), pages 286-299.
    4. Zhang, Qiangqiang & Chang, Zheshao & Fu, Mingkai & Nie, Fuliang & Ren, Ting & Li, Xin, 2023. "Performance analysis of a light uniform device for the solar receiver or reactor," Energy, Elsevier, vol. 270(C).

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