A review on exergy analysis of solar parabolic collectors

Anil Kumar, Mamta Sharma, Pankaj Thakur, Vijay Kumar Thakur, Sameer S. Rahatekar*, Rajesh Kumar

*Corresponding author for this work

Research output: Contribution to journalReview article

8 Citations (Scopus)

Abstract

Exergy analysis is very helpful for reducing irreversibility and rising the efficiency of solar collectors. The major objective of the present study is to organize a review on exergy analysis of different parabolic solar collectors. The effects of various flows and geometrical parameters of parabolic thermal collectors on the exergy efficiency were presented and discussed. In addition, comparative study was carried out to select the best solar thermal system for maximum exergy efficiency with minimal thermal losses. This study indicated that the hybrid nanofluids enhanced the exergy efficiency significantly as compared to without hybrid nanofluids. Passive techniques comprising twisted tape inserts, fins and insertion of swirl devices in the stream for changing the stream patterns causes to interrupt the thermal boundary layer and accordingly high exergy efficiency. This review would also throw light on the scope for further research and recommendation for improvement in the existing solar thermal collectors. Finally, this work will be beneficial for the scholars working on exergy analyses of solar parabolic collectors.

Original languageEnglish
Pages (from-to)411-432
Number of pages22
JournalSolar Energy
Volume197
Early online date17 Jan 2020
DOIs
Publication statusPrint publication - Feb 2020
Externally publishedYes

Keywords

  • Exergy
  • Nanofluids
  • Passive techniques
  • Solar energy
  • Swirl flow

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    Kumar, A., Sharma, M., Thakur, P., Thakur, V. K., Rahatekar, S. S., & Kumar, R. (2020). A review on exergy analysis of solar parabolic collectors. Solar Energy, 197, 411-432. https://doi.org/10.1016/j.solener.2020.01.025