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Energy and exergy analyses of a parabolic trough collector operated with nanofluids for medium and high temperature applications

Research output: Contribution to journalJournal article

  • Amine Allouhi
  • Benzakour Amine
  • Saidur Rahman
  • T. T. Kousksou
  • A. Jamil
<mark>Journal publication date</mark>01/2018
<mark>Journal</mark>Energy Conversion and Management
Number of pages17
Pages (from-to)201-217
Early online date13/11/17
<mark>Original language</mark>English


Thermal performance of parabolic trough collectors (PTCs) can be improved by suspending nanoparticles into the traditionally used heat transfer fluids. In this work, a one-dimensional mathematical model is proposed to investigate the effect of various nanoprticles suspended in the working fluid for medium and high temperature PTCs. The major finding of this work is that the nanofluid enhances the thermal efficiency of the PTC slightly. High operating temperatures are more suitable for using nanofluids and generate higher relative gains of energy delivered. It is also found that the exergetic efficiency improvement is more important than energetic efficiency. The peak exergy efficiency is achieved by the CuO based nanofluid and is about 9.05%. The maximum daily relative gain of thermal energy delivered is found to be 1.46% by using 5% of Al2O3 in the base fluid. Optimal control of the operating conditions can lead to maximum energetic and exergetic performances of the PTC.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Energy Conversion and Management. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Energy Conversion and Management, 155, 2018 DOI: 10.1016/j.enconman.2017.10.059