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Open AccessArticle

Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al2O3 Nanofluid

1
Department of Energy and Mechanical Engineering, Graduate School, Gyeongsang National University, Jinju 53064, Korea
2
Department of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang National University, Cheondaegukchi-Gil 38, Tongyeong 53064, Korea
3
Training Ship Operation Center, College of Marine Science, Gyeongsang National University, Cheondaegukchi-Gil 38, Tongyeong 53064, Korea
4
German Engineering Research and Development Center LSTME Busan Branch, Busan 46742, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(16), 5521; https://doi.org/10.3390/app10165521
Received: 10 July 2020 / Revised: 3 August 2020 / Accepted: 5 August 2020 / Published: 10 August 2020
(This article belongs to the Special Issue Nanomaterials Boosting Solar Water Splitting)
Over the years, solar collecting systems have gained interest in renewable energy. This study investigated improving the efficiency of the working fluid in thermal solar systems by using nanofluids with three concentrations of alumina, 0.1, 0.3, and 0.5 wt%. The UV-vis absorbance, electronic conductivity, and thermal transfer properties of the nanofluids were analyzed, and the thermal changes with exposure to solar radiation in an experimental collector system were measured by pyranometer. The electronic conductivity, thermal conductivity, and UV-vis absorbance increased with the alumina concentration. Moreover, the temperatures of the nanofluids increased more under solar irradiation than that of distilled water. This implies that the alumina nanofluids absorb solar energy more efficiently than water. The findings of this study suggest that the use of both alumina nanofluids and nanoparticles will improve the efficiency of thermal solar power systems. View Full-Text
Keywords: nanofluids; alumina; thermal solar system; dispersion; absorption nanofluids; alumina; thermal solar system; dispersion; absorption
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MDPI and ACS Style

Lee, Y.; Jeong, H.; Park, J.-T.; Delgado, A.; Kim, S. Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al2O3 Nanofluid. Appl. Sci. 2020, 10, 5521. https://doi.org/10.3390/app10165521

AMA Style

Lee Y, Jeong H, Park J-T, Delgado A, Kim S. Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al2O3 Nanofluid. Applied Sciences. 2020; 10(16):5521. https://doi.org/10.3390/app10165521

Chicago/Turabian Style

Lee, Youngho; Jeong, Hyomin; Park, Ji-Tae; Delgado, Antonio; Kim, Sedong. 2020. "Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al2O3 Nanofluid" Appl. Sci. 10, no. 16: 5521. https://doi.org/10.3390/app10165521

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