TY - JOUR
T1 - Energy and exergy comparison of a flat-plate solar collector using water, Al2O3 nanofluid, and CuO nanofluid
AU - Tong, Yijie
AU - Lee, Hoseong
AU - Kang, Woobin
AU - Cho, Honghyun
N1 - Funding Information:
This work was supported by “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20194030202410 ). And This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( NRF-2017R1A2B4006125 ).
PY - 2019/8
Y1 - 2019/8
N2 - The performance of a flat-plate solar collector was investigated by using water, Al2O3 nanofluid, and CuO nanofluid as the working fluids. The energy efficiency, entropy generation, exergy destruction, and exergy efficiency were analyzed and compared. The flat-plate solar collector exhibited the highest efficiency when the Al2O3 nanofluid was used as the working fluid (21.9% higher than the efficiency when water was used). The entropy generation was the highest for water and the lowest for 1.0 vol%-Al2O3 nanofluid. The exergy efficiency of the solar collector using 1.0 vol%-Al2O3 and 0.5 vol%-CuO nanofluid was improved by 56.9% and 49.6%, respectively, compared with that for water. The highest exergy efficiency of the solar collector was obtained with 1.0 vol%-Al2O3 nanofluid. Experimental results showed that the use of Al2O3 and CuO nanofluids in the flat-plate solar collector could improve the thermal efficiency compared to the use of water, and the maximum performance of the flat-plate solar collector was obtained when 1.0 vol%-Al2O3 nanofluid was used.
AB - The performance of a flat-plate solar collector was investigated by using water, Al2O3 nanofluid, and CuO nanofluid as the working fluids. The energy efficiency, entropy generation, exergy destruction, and exergy efficiency were analyzed and compared. The flat-plate solar collector exhibited the highest efficiency when the Al2O3 nanofluid was used as the working fluid (21.9% higher than the efficiency when water was used). The entropy generation was the highest for water and the lowest for 1.0 vol%-Al2O3 nanofluid. The exergy efficiency of the solar collector using 1.0 vol%-Al2O3 and 0.5 vol%-CuO nanofluid was improved by 56.9% and 49.6%, respectively, compared with that for water. The highest exergy efficiency of the solar collector was obtained with 1.0 vol%-Al2O3 nanofluid. Experimental results showed that the use of Al2O3 and CuO nanofluids in the flat-plate solar collector could improve the thermal efficiency compared to the use of water, and the maximum performance of the flat-plate solar collector was obtained when 1.0 vol%-Al2O3 nanofluid was used.
KW - Entropy
KW - Exergy efficiency
KW - Flat-plate solar collector
KW - Nanofluid
KW - Thermal efficiency
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U2 - 10.1016/j.applthermaleng.2019.113959
DO - 10.1016/j.applthermaleng.2019.113959
M3 - Article
AN - SCOPUS:85067418047
VL - 159
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
SN - 1359-4311
M1 - 113959
ER -
