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Model construction and energy harvesting investigation of shell shaped multi-section compound parabolic concentrator with solar vacuum tube

Author

Listed:
  • Yi, Yunfan
  • Zheng, Canyang
  • Xiao, Liye
  • Luo, Huilong
  • Lv, Tianping
  • Chen, Fei

Abstract

The solar non-imaging concentrator has the characteristics of no tracking device, stable system structure, and collected beam radiation and diffuse radiation. In particular, the Multi-section Compound Parabolic Concentrator(M-CPC) also has the advantages of a high utilization rate of reflector, long working time, and low manufacturing cost. In present research, a Novel Multi-section Compound Parabolic Concentrator (NM-CPC) is constructed based on the edge ray principle and Monte Carlo ray tracing (MCRT) method for the Shell Shaped Compound Parabolic Concentrator (SS-CPC) horizontally placed. The reliability of the model is verified by visual laser experiments, and its optical performance is analyzed considering the influence of the outer tube glass of the vacuum tube on the ray propagation. Compared to SS-CPC of the same specification, NM-CPC can eliminate the rays that escaped from the vacuum tube interlayer effectively. The heat-absorbing surface has a more uniform energy flux distribution and lower peak of energy flux. In spring and autumn, it has better solar radiant energy harvesting, which is 206 MJ and 297 MJ respectively. In terms of economic performance, the cost of the reflector is saved by 75.5%. All results show that NM-CPC has good application potential and economic performance.

Suggested Citation

  • Yi, Yunfan & Zheng, Canyang & Xiao, Liye & Luo, Huilong & Lv, Tianping & Chen, Fei, 2024. "Model construction and energy harvesting investigation of shell shaped multi-section compound parabolic concentrator with solar vacuum tube," Energy, Elsevier, vol. 294(C).
    • Handle: RePEc:eee:energy:v:294:y:2024:i:c:s0360544224004158
    DOI: 10.1016/j.energy.2024.130643
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