Heat transfer and entropy generation in a parabolic trough receiver with wall-detached twisted tape inserts

Aggrey Mwesigye, Tunde Bello-Ochende, Josua P. Meyer

Research output: Contribution to journalArticlepeer-review

101 Scopus citations

Abstract

Study on the use twisted tape inserts in a parabolic trough receiver is presented.Use of twisted tape inserts significantly improves receiver thermal performance.Receiver thermal efficiency increases up to 10% with twisted tape inserts.At larger Reynolds numbers use of inserts degrades receiver thermodynamic performance.Entropy generation rates reduce up to 58% with the use twisted tape inserts.

Original languageEnglish (US)
Pages (from-to)238-257
Number of pages20
JournalInternational Journal of Thermal Sciences
Volume99
DOIs
StatePublished - Jan 1 2016
Externally publishedYes

Bibliographical note

Funding Information:
The support received from Tshwane University of Technology , University of Cape Town and University of Pretoria is appreciated. The funding received from NRF , TESP , and Stellenbosch University/University of Pretoria , SANERI/SANEDI , CSIR , EEDSM Hub and NAC is duly acknowledged and appreciated.

Publisher Copyright:
© 2015 Elsevier Masson SAS. All rights reserved.

Keywords

  • Entropy generation
  • Fluid friction
  • Heat transfer performance
  • Parabolic trough receiver
  • Twist ratio
  • Width ratio

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