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Investigation of Using Ag/Therminol Nanofluids As Heating Fluids in PTSC-Based Power Plants

[+] Author Affiliations
Adnan Alashkar, Mohamed Gadalla

American University of Sharjah, Sharjah, UAE

Paper No. IMECE2017-72372, pp. V006T08A099; 14 pages
doi:10.1115/IMECE2017-72372
From:
  • ASME 2017 International Mechanical Engineering Congress and Exposition
  • Volume 6: Energy
  • Tampa, Florida, USA, November 3–9, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5841-7
  • Copyright © 2017 by ASME

abstract

In this paper, the effect of using Ag/Therminol nanofluids as a heating fluid in a PTSC on the performance of a PTSC-based power plant is studied. The effect of the nanofluids on the convective heat transfer coefficient and pressure drop inside the PTSC absorber, and the pumping power is investigated for different nanoparticles sizes and shapes. Moreover, the effect of the nanofluids on the performance of the PTSC is investigated. Further, the effect of the nanofluids on the performance metrics and financial metrics of a PTSC-based power plant is analyzed for three modes of operation, where the 1st assumes no storage, 2nd assumes a storage period of 5 hours, and 3rd assumes a storage period of 7 hours. The results show that the presence of the nanofluids improves the heat transfer characteristics inside the PTSC absorber tube, the power output of the PTSC, and the energetic and exergetic efficiencies. Moreover, the power output and cost parameters of a PTSC-based power plant improve when nanofluids are used. For instance, the power output increases from 117 Gwh to 119 Gwh. In addition, it is concluded that the power plant performs better with the presence of a thermal energy storage system (TES).

Copyright © 2017 by ASME

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