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Analysis of the thermal performance of parabolic solar dish collector using MCRT-FVM coupled optical-thermal model

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  • Zhi, Yuan
  • Liu, Shuai-shuai
  • Yang, Bin
  • Yu, Xiao-hui

Abstract

The optimization of geometric configurations and operational parameters is crucial for enhancing the efficiency of Parabolic Solar Dish Collectors (PSDC) in converting solar radiation into useable thermal energy. In this study, a 3D coupled photothermal model was developed using a MCRT-FVM method to systematically evaluate the effects of these factors on heat loss and collector performance. For the first time, the influence of tracking errors was considered. The geometry analysis was as follows: A range of 2500–3000 mm is the optimum reflector size. The focal length deviation should be controlled within ±75 mm, and a mounting angle between 45° and 135° leads to excellent collector performance. Findings on operating parameters: An increase in inlet temperature by 4 K boosts ηex by an average of 0.82 %. Conversely, a rise in mass flow rate by 0.1 kg/s and an increase in ambient temperature by 3 K result in average ηex decreases of 4.09 % and 0.59 %, respectively. Tracking errors exceeding 4° will degrade the performance of the PSDC.

Suggested Citation

  • Zhi, Yuan & Liu, Shuai-shuai & Yang, Bin & Yu, Xiao-hui, 2025. "Analysis of the thermal performance of parabolic solar dish collector using MCRT-FVM coupled optical-thermal model," Energy, Elsevier, vol. 322(C).
    • Handle: RePEc:eee:energy:v:322:y:2025:i:c:s0360544225012216
    DOI: 10.1016/j.energy.2025.135579
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