Thermal performance of a receiver tube for a high concentration ratio parabolic trough system and potential for improved performance with syltherm800-cuo nanofluid

Aggrey Mwesigye, Zhongjie Huan, Josua P. Meyer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

In this paper, the thermal performance of a high concentration ratio parabolic trough system and the potential for improved thermal performance using Syltherm800-CuO nanofluid were investigated and presented. The parabolic trough system considered in this study has a concentration ratio of 113 compared with 82 in current commercial systems. The heat transfer fluid temperature was varied between 350 K and 650 K and volume fractions of nanoparticle were in the range 1-6%. Monte-Carlo ray tracing was used to obtain the actual heat flux on the receiver's absorber tube. The obtained heat flux profiles were subsequently coupled with a computational fluid dynamics tool to investigate the thermal performance of the receiver. From the study, the results show that with increased concentration ratios, receiver thermal performance degrades, with both the receiver heat loss and the absorber tube circumferential temperature differences increasing, especially at low flow rates. The results further show that the use of nanofluids significantly improves receiver thermal performance. The heat transfer performance increases up to 38% while the thermal efficiency increases up to 15%. Significant improvements in receiver thermal efficiency exist at high inlet temperatures and low flow rates.

Original languageEnglish (US)
Title of host publicationHeat Transfer and Thermal Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791857502
DOIs
StatePublished - 2015
Externally publishedYes
EventASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015 - Houston, United States
Duration: Nov 13 2015Nov 19 2015

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume8B-2015

Conference

ConferenceASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015
CountryUnited States
CityHouston
Period11/13/1511/19/15

Keywords

  • Computational Fluid Dynamics
  • Concentration Ratio
  • Nanofluid
  • Ray Tracing
  • Receiver
  • Thermal Efficiency

Fingerprint Dive into the research topics of 'Thermal performance of a receiver tube for a high concentration ratio parabolic trough system and potential for improved performance with syltherm800-cuo nanofluid'. Together they form a unique fingerprint.

  • Cite this

    Mwesigye, A., Huan, Z., & Meyer, J. P. (2015). Thermal performance of a receiver tube for a high concentration ratio parabolic trough system and potential for improved performance with syltherm800-cuo nanofluid. In Heat Transfer and Thermal Engineering (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 8B-2015). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2015-50234