A novel absorptive/reflective solar concentrator for heat and electricity generation: An optical and thermal analysis

Xian Long Meng, Nazmi Sellami, Andrew R. Knox, Andrea Montecucco, Jonathan Siviter, Paul Mullen, Ali Ashraf, Antonio Samarelli, Lourdes F. Llin, Douglas J. Paul, Wen Guang Li, Manosh C. Paul, Duncan H. Gregory, Guang Han, Min Gao, Tracy Sweet, Robert Freer, Feridoon Azough, Robert Lowndes, Xin Lin XiaTapas K. Mallick

研究成果: Contribution to journalArticle査読

19 被引用数 (Scopus)

抄録

The crossed compound parabolic concentrator (CCPC) is one of the most efficient non-imaging solar concentrators used as a stationary solar concentrator or as a second stage solar concentrator. In this study, the CCPC is modified to demonstrate for the first time a new generation of solar concentrators working simultaneously as an electricity generator and thermal collector. The CCPC is designed to have two complementary surfaces, one reflective and one absorptive, and is named as an absorptive/reflective CCPC (AR-CCPC). Usually, the height of the CCPC is truncated with a minor sacrifice of the geometric concentration. These truncated surfaces rather than being eliminated are instead replaced with absorbent surfaces to collect heat from solar radiation. The optical efficiency including absorptive/reflective part of the AR-CCPC was simulated and compared for different geometric concentration ratios varying from 3.6× to 4×. It was found that the combined optical efficiency of the AR-CCPC 3.6×/4× remained constant and high all day long and that it had the highest total optical efficiency compared to other concentrators. In addition, the temperature distributions of AR-CCPC surfaces and the assembled solar cell were simulated based on those heat flux boundary conditions. It was shown that the addition of a thermal absorbent surface can increase the wall temperature. The maximum value reached 321.5 K at the front wall under 50° incidence. The experimental verification was also adopted to show the benefits of using absorbent surfaces. The initial results are very promising and significant for the enhancement of solar concentrator systems with lower concentrations.

本文言語英語
ページ(範囲)142-153
ページ数12
ジャーナルEnergy Conversion and Management
114
DOI
出版ステータス出版済み - 4 15 2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • 原子力エネルギーおよび原子力工学
  • 燃料技術
  • エネルギー工学および電力技術

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