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Numerical investigation of start-up performance of a solar cavity receiver

Author

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  • Fang, J.B.
  • Tu, N.
  • Wei, J.J.

Abstract

Solar cavity receiver plays a dominant role in the light-heat conversion process of the solar power system. Its performance can directly affect the efficiency of the whole power generation system. The start-up thermal performance of a saturated steam solar cavity receiver with absorber tubes was numerically studied. A six-side prism with inclined top and bottom faces was chosen as the solar cavity. During the start-up of the receiver, the temperature rising rate was considered as the main control condition, and different values were selected from different temperature regions. Three kinds of start-up processes were simulated. According to the temperature rising rate and the evaporation rate, rising curves of water temperature, pressure and evaporation were designed, and the net energy required by the receiver during start-up was calculated. The results demonstrate the proportional relationship between the net energy and the evaporation rate. A computational model established for the start-up process was used to calculate the energy required by the aperture from heliostats during the whole start-up process. Thermal efficiency of the receiver has been gained as well, which is very low during the early start-up period due to severe convective heat loss. The velocity of air around the cavity can hardly be affected during start-up process, but the temperature of air changes a lot with the start-up time.

Suggested Citation

  • Fang, J.B. & Tu, N. & Wei, J.J., 2013. "Numerical investigation of start-up performance of a solar cavity receiver," Renewable Energy, Elsevier, vol. 53(C), pages 35-42.
    • Handle: RePEc:eee:renene:v:53:y:2013:i:c:p:35-42
    DOI: 10.1016/j.renene.2012.10.053
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    Citations

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    Cited by:

    1. Behar, Omar & Khellaf, Abdallah & Mohammedi, Kamal, 2013. "A review of studies on central receiver solar thermal power plants," Renewable and Sustainable Energy Reviews, Elsevier, vol. 23(C), pages 12-39.
    2. Zhang, Li & Fang, Jiabin & Wei, Jinjia & Yang, Guidong, 2017. "Numerical investigation on the thermal performance of molten salt cavity receivers with different structures," Applied Energy, Elsevier, vol. 204(C), pages 966-978.
    3. Zhang, Yanping & Xiao, Hu & Zou, Chongzhe & Falcoz, Quentin & Neveu, Pierre, 2020. "Combined optics and heat transfer numerical model of a solar conical receiver with built-in helical pipe," Energy, Elsevier, vol. 193(C).
    4. Jiabin Fang & Mumtaz A. Qaisrani & Nan Tu & Jinjia Wei & Zhenjie Wan & Yabin Jin & Muhammad Khalid & Naveed Ahmed, 2022. "Experiment and Numerical Analysis of Thermal Performance of a Billboard External Receiver," Energies, MDPI, vol. 15(6), pages 1-15, March.
    5. Loni, R. & Askari Asli-Ardeh, E. & Ghobadian, B. & Kasaeian, A.B. & Bellos, Evangelos, 2018. "Thermal performance comparison between Al2O3/oil and SiO2/oil nanofluids in cylindrical cavity receiver based on experimental study," Renewable Energy, Elsevier, vol. 129(PA), pages 652-665.
    6. Zhang, Qiangqiang & Li, Xin & Wang, Zhifeng & Li, Zhi & Liu, Hong, 2018. "Function testing and failure analysis of control system for molten salt receiver system," Renewable Energy, Elsevier, vol. 115(C), pages 260-268.

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