Performance Assessment of a Solar Dryer System Using Small Parabolic Dish and Alumina/Oil Nanofluid: Simulation and Experimental Study

Arkian, Amir Hossein and Najafi, Gholamhassan and Gorjian, Shiva and Loni, Reyhaneh and Bellos, Evangelos and Yusaf, Talal (2019) Performance Assessment of a Solar Dryer System Using Small Parabolic Dish and Alumina/Oil Nanofluid: Simulation and Experimental Study. Energies, 12 (24):4747. pp. 1-22.

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Abstract

In this study, a small dish concentrator with a cylindrical cavity receiver was experimentally investigated as the heat source of a dryer. The system was examined for operation with pure thermal oil and Al2O3/oil nanofluid as the working fluids in the solar system. Moreover, the design, the development, and the evaluation of the dried mint plant are presented in this work. Also, the solar dryer system was simulated by the SolidWorks and ANSYS CFX software. On the other side, the color histogram of the wet and dried mint samples based on the RGB method was considered. The results revealed that the different temperatures of the solar working fluids at the inlet and outlet of the cavity receiver showed similar trend data compared to the variation of the solar radiation during the experimental test. Moreover, it is found that the cavity heat gain and thermal efficiency of the solar system was improved by using the nanofluid as the solar working fluid. Furthermore, the required time for mint drying had decreased by increasing the drying temperature and increasing air speed. The highest drying time was measured equal to 320 min for the condition of the air speed equal to 0.5 m/s and the drying temperature of 30 °C. A good agreement was observed between the calculated numerical results and measured experimental data. Finally, based on the color histogram of the wet and dried mint samples, it was concluded that intensity amount of the red color of the mint increased with the drying process compared to intensity amount of the red color of the wet mint sample.


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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: 08 Jun 2022 05:33
Last Modified: 09 Jun 2022 03:51
Uncontrolled Keywords: solar dish concentrator; cylindrical cavity receiver; nanofluid; experimental test; simulation
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
Socio-Economic Objectives (2020): 17 ENERGY > 1708 Renewable energy > 170805 Solar-thermal energy
Identification Number or DOI: https://doi.org/10.3390/en12244747
URI: http://eprints.usq.edu.au/id/eprint/48912

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