Advances in Energy Research

Techno-Press (테크노프레스)
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Experimental performance investigation of compound parabolic cavity receiver having single absorber tube

  • Omar Al-Nabhani (Department of Mechanical and Industrial Engineering, Sultan Qaboos University) ;
  • Saud Al-Kalbani (Department of Mechanical and Industrial Engineering, Sultan Qaboos University) ;
  • Azzam Al-Alawi (Department of Mechanical and Industrial Engineering, Sultan Qaboos University) ;
  • Afzal Husain (Department of Mechanical and Industrial Engineering, Sultan Qaboos University)
  • Received : 2021.07.15
  • Accepted : 2022.09.07
  • Published : 2022.09.25
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Abstract

The current study presents experimental research on a parabolic trough collector with tube and cavity receivers. The primary concentrating parabolic reflector is designed for an aperture area of 2×2 m2 with mirror-polished stainless steel sheet reflectors. The cavity receiver consists of a compound parabolic secondary reflector and a copper tube. Both the conventional tube receiver and the cavity receiver tube are coated with black powder. The experiments are carried out to compare the efficiency of the cavity receiver with the tube receiver for fluid temperature rise, thermal efficiency, and overall losses. The experiments showed significantly higher fluid temperature rise and overall efficiency and lower thermal losses for the cavity receiver compared to the tube receiver within the parameters explored in this study.

Keywords

Acknowledgement

The authors acknowledge the support from Sultan Qaboos University, Oman, (Grant No. (IG/ENG/MEID/21/01) for conducting this research.

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