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Parabolic trough efficiency gain through use of a cavity absorber with a hot mirror

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  • Mohamad, Khaled
  • Ferrer, P.

Abstract

The solar parabolic trough collector is amongst the most mature solar technologies and has become more cost effective in recent years. In this paper, a novel design for the receiver unit is presented which aims to decrease the radiant energy losses while raising the temperature of the working fluid, when compared to conventional systems. The design incorporates the application of different optically active layers in conjunction with a cavity absorber. The cavity geometry and a hot mirror coating at the aperture enable heightened retention of thermal radiation of the receiver. The additional, novel aspects of the background theory of the design is presented and implemented in a simulation. The simulation results for receiver temperature profiles, heat transfer fluid temperature, and efficiencies are shown. It is seen that our proposal has advantages in terms of thermal behavior over conventional designs in that it can exceed the heat transfer fluid temperature and the efficiency of existing alternatives.

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  • Mohamad, Khaled & Ferrer, P., 2019. "Parabolic trough efficiency gain through use of a cavity absorber with a hot mirror," Applied Energy, Elsevier, vol. 238(C), pages 1250-1257.
    • Handle: RePEc:eee:appene:v:238:y:2019:i:c:p:1250-1257
    DOI: 10.1016/j.apenergy.2019.01.163
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    References listed on IDEAS

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    Cited by:

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    4. Madadi Avargani, Vahid & Norton, Brian & Rahimi, Amir, 2021. "An open-aperture partially-evacuated receiver for more uniform reflected solar flux in circular-trough reflectors: Comparative performance in air heating applications," Renewable Energy, Elsevier, vol. 176(C), pages 11-24.
    5. Kaluba, V.S. & Mohamad, Khaled & Ferrer, P., 2020. "Experimental and simulated performance of hot mirror coatings in a parabolic trough receiver," Applied Energy, Elsevier, vol. 257(C).
    6. Bicer, Yusuf & Sajid, Muhammad Usman & Al-Breiki, Mohammed, 2022. "Optimal spectra management for self-power producing greenhouses for hot arid climates," Renewable and Sustainable Energy Reviews, Elsevier, vol. 159(C).
    7. Mohamad, Khaled & Ferrer, P., 2021. "Thermal performance and design parameters investigation of a novel cavity receiver unit for parabolic trough concentrator," Renewable Energy, Elsevier, vol. 168(C), pages 692-704.
    8. Liang, Huaxu & Wang, Fuqiang & Yang, Luwei & Cheng, Ziming & Shuai, Yong & Tan, Heping, 2021. "Progress in full spectrum solar energy utilization by spectral beam splitting hybrid PV/T system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 141(C).
    9. Norouzi, Amir Mohammad & Siavashi, Majid & Ahmadi, Rouhollah & Tahmasbi, Milad, 2021. "Experimental study of a parabolic trough solar collector with rotating absorber tube," Renewable Energy, Elsevier, vol. 168(C), pages 734-749.

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