Performance Investigation of Solar ORC Using Different Nanofluids

Loni, Reyhaneh and Najafi, Gholamhassan and Asli-Ardeh, Ezzatollah Askari and Ghobadian, Barat and Le Roux, Willem G. and Yusaf, Talal (2019) Performance Investigation of Solar ORC Using Different Nanofluids. Applied Sciences, 9 (15):3048. pp. 1-23.

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Abstract

A parabolic solar dish concentrator, as the heat source of an organic Rankine cycle (ORC), can be used for power generation. Different types of tubular cavity receivers with different nanofluids can be considered for use in the solar dish collector to improve its efficiency. In the current research, an ORC with three different cavity receivers including hemispherical, cubical, and cylindrical are investigated using three nanofluids: Al2O3/oil, CuO/oil, and SiO2/oil. A numerical model is validated using experimental data. The ORC analysis is done for a constant evaporator pressure of 2.5 MPa, and condenser temperature of 38 °C. Methanol is employed as the ORC’s working fluid and a non-regenerative, ideal ORC system with different turbine inlet temperatures is considered. Furthermore, a fixed solar heat transfer fluid flow rate of 60 mL/s and dish diameter of 1.9 m is investigated. Results show that, compared to pure oil, the thermal efficiency of the cavity receivers increases slightly, and the pressure drop increases with the application of nanofluids. Furthermore, results show that the cubical cavity receiver, using oil/Al2O3 nanofluid, is the most efficient choice for application as the investigated solar ORC’s heat source.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Date Deposited: 13 Jun 2022 05:50
Last Modified: 21 Jul 2022 03:34
Uncontrolled Keywords: thermal comparison; nanofluid; cavity receivers; solar dish concentrator
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020109 Space and Solar Physics
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510108 Solar physics
Identification Number or DOI: https://doi.org/10.3390/app9153048
URI: http://eprints.usq.edu.au/id/eprint/48965

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