Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid
Thermal performance of Al 2 O 3 nanoparticles dispersed in water was evaluated experimentally in a fully instrumented circular tube under turbulent flow conditions. Thermophysical properties of Al 2 O 3 nanofluids at three different volumetric concentrations (0.38%, 0.81%, and 1.30%) were determined...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2020-08-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814020952277 |
| _version_ | 1818885038284996608 |
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| author | Minsuk Kong Seungro Lee |
| author_facet | Minsuk Kong Seungro Lee |
| author_sort | Minsuk Kong |
| collection | DOAJ |
| description | Thermal performance of Al 2 O 3 nanoparticles dispersed in water was evaluated experimentally in a fully instrumented circular tube under turbulent flow conditions. Thermophysical properties of Al 2 O 3 nanofluids at three different volumetric concentrations (0.38%, 0.81%, and 1.30%) were determined as a function of temperature. Pressure drop and heat transfer experiments were carried out at different volumetric concentrations and inlet fluid temperatures (10°C–30°C). The overall performance of the Al 2 O 3 nanofluids was evaluated by considering both their hydraulic and heat transfer characteristics. The experimental results showed that the use of Al 2 O 3 nanofluids increases the pressure drop by up to about 13% due to the greater viscosity. In addition, the heat transfer coefficient of nanofluids increased with the volumetric concentration by up to approximately 19% induced by the enhanced thermal conductivity. Furthermore, the experimental results indicated that the nanofluid with a volume fraction of 0.81% at the highest inlet fluid temperature increases the overall performance by up to around 8% and performs better than the other volume fractions. Enhancement in the overall performance increases with increasing inlet fluid temperature because of both the enhanced effective thermal conductivity and the decreased viscosity, which increases the energy exchange and decreases the pressure loss, respectively. |
| first_indexed | 2024-12-19T15:59:05Z |
| format | Article |
| id | doaj.art-eac064daad0740fc93963a97c37d914b |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-12-19T15:59:05Z |
| publishDate | 2020-08-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-eac064daad0740fc93963a97c37d914b2022-12-21T20:14:59ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402020-08-011210.1177/1687814020952277Performance evaluation of AlO nanofluid as an enhanced heat transfer fluidMinsuk Kong0Seungro Lee1Department of Building Equipment System & Fire Protection Engineering, Gachon University, Seongnam-si, Gyeonggi-do, Republic of KoreaDepartment of Mechanical Engineering, Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of KoreaThermal performance of Al 2 O 3 nanoparticles dispersed in water was evaluated experimentally in a fully instrumented circular tube under turbulent flow conditions. Thermophysical properties of Al 2 O 3 nanofluids at three different volumetric concentrations (0.38%, 0.81%, and 1.30%) were determined as a function of temperature. Pressure drop and heat transfer experiments were carried out at different volumetric concentrations and inlet fluid temperatures (10°C–30°C). The overall performance of the Al 2 O 3 nanofluids was evaluated by considering both their hydraulic and heat transfer characteristics. The experimental results showed that the use of Al 2 O 3 nanofluids increases the pressure drop by up to about 13% due to the greater viscosity. In addition, the heat transfer coefficient of nanofluids increased with the volumetric concentration by up to approximately 19% induced by the enhanced thermal conductivity. Furthermore, the experimental results indicated that the nanofluid with a volume fraction of 0.81% at the highest inlet fluid temperature increases the overall performance by up to around 8% and performs better than the other volume fractions. Enhancement in the overall performance increases with increasing inlet fluid temperature because of both the enhanced effective thermal conductivity and the decreased viscosity, which increases the energy exchange and decreases the pressure loss, respectively.https://doi.org/10.1177/1687814020952277 |
| spellingShingle | Minsuk Kong Seungro Lee Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid Advances in Mechanical Engineering |
| title | Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid |
| title_full | Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid |
| title_fullStr | Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid |
| title_full_unstemmed | Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid |
| title_short | Performance evaluation of AlO nanofluid as an enhanced heat transfer fluid |
| title_sort | performance evaluation of alo nanofluid as an enhanced heat transfer fluid |
| url | https://doi.org/10.1177/1687814020952277 |
| work_keys_str_mv | AT minsukkong performanceevaluationofalonanofluidasanenhancedheattransferfluid AT seungrolee performanceevaluationofalonanofluidasanenhancedheattransferfluid |