Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid
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 conduct...
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MDPI AG
2020-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/16/5521 |
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doaj-7195f00c1d0f4858834fae4729ac934c2020-11-25T03:07:54ZengMDPI AGApplied Sciences2076-34172020-08-01105521552110.3390/app10165521Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> NanofluidYoungho Lee0Hyomin Jeong1Ji-Tae Park2Antonio Delgado3Sedong Kim4Department of Energy and Mechanical Engineering, Graduate School, Gyeongsang National University, Jinju 53064, KoreaDepartment of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang National University, Cheondaegukchi-Gil 38, Tongyeong 53064, KoreaTraining Ship Operation Center, College of Marine Science, Gyeongsang National University, Cheondaegukchi-Gil 38, Tongyeong 53064, KoreaGerman Engineering Research and Development Center LSTME Busan Branch, Busan 46742, KoreaGerman Engineering Research and Development Center LSTME Busan Branch, Busan 46742, KoreaOver 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.https://www.mdpi.com/2076-3417/10/16/5521nanofluidsaluminathermal solar systemdispersionabsorption |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Youngho Lee Hyomin Jeong Ji-Tae Park Antonio Delgado Sedong Kim |
| spellingShingle |
Youngho Lee Hyomin Jeong Ji-Tae Park Antonio Delgado Sedong Kim Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid Applied Sciences nanofluids alumina thermal solar system dispersion absorption |
| author_facet |
Youngho Lee Hyomin Jeong Ji-Tae Park Antonio Delgado Sedong Kim |
| author_sort |
Youngho Lee |
| title |
Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid |
| title_short |
Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid |
| title_full |
Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid |
| title_fullStr |
Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid |
| title_full_unstemmed |
Experimental Investigation on Evaluation of Thermal Performance of Solar Heating System Using Al<sub>2</sub>O<sub>3</sub> Nanofluid |
| title_sort |
experimental investigation on evaluation of thermal performance of solar heating system using al<sub>2</sub>o<sub>3</sub> nanofluid |
| publisher |
MDPI AG |
| series |
Applied Sciences |
| issn |
2076-3417 |
| publishDate |
2020-08-01 |
| description |
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. |
| topic |
nanofluids alumina thermal solar system dispersion absorption |
| url |
https://www.mdpi.com/2076-3417/10/16/5521 |
| work_keys_str_mv |
AT youngholee experimentalinvestigationonevaluationofthermalperformanceofsolarheatingsystemusingalsub2subosub3subnanofluid AT hyominjeong experimentalinvestigationonevaluationofthermalperformanceofsolarheatingsystemusingalsub2subosub3subnanofluid AT jitaepark experimentalinvestigationonevaluationofthermalperformanceofsolarheatingsystemusingalsub2subosub3subnanofluid AT antoniodelgado experimentalinvestigationonevaluationofthermalperformanceofsolarheatingsystemusingalsub2subosub3subnanofluid AT sedongkim experimentalinvestigationonevaluationofthermalperformanceofsolarheatingsystemusingalsub2subosub3subnanofluid |
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