Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow
<p>Abstract</p> <p>This study analyzes the characteristics of alumina (Al<sub>2</sub>O<sub>3</sub>)/water nanofluid to determine the feasibility of its application in an air-cooled heat exchanger for heat dissipation for PEMFC or electronic chip cooling. The...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2011-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://www.nanoscalereslett.com/content/6/1/488 |
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| author | Teng Tun-Chien Teng Tun-Ping Hung Yi-Hsuan Chen Jyun-Hong |
| author_facet | Teng Tun-Chien Teng Tun-Ping Hung Yi-Hsuan Chen Jyun-Hong |
| author_sort | Teng Tun-Chien |
| collection | DOAJ |
| description | <p>Abstract</p> <p>This study analyzes the characteristics of alumina (Al<sub>2</sub>O<sub>3</sub>)/water nanofluid to determine the feasibility of its application in an air-cooled heat exchanger for heat dissipation for PEMFC or electronic chip cooling. The experimental sample was Al<sub>2</sub>O<sub>3</sub>/water nanofluid produced by the direct synthesis method at three different concentrations (0.5, 1.0, and 1.5 wt.%). The experiments in this study measured the thermal conductivity and viscosity of nanofluid with weight fractions and sample temperatures (20-60°C), and then used the nanofluid in an actual air-cooled heat exchanger to assess its heat exchange capacity and pressure drop under laminar flow. Experimental results show that the nanofluid has a higher heat exchange capacity than water, and a higher concentration of nanoparticles provides an even better ratio of the heat exchange. The maximum enhanced ratio of heat exchange and pressure drop for all the experimental parameters in this study was about 39% and 5.6%, respectively. In addition to nanoparticle concentration, the temperature and mass flow rates of the working fluid can affect the enhanced ratio of heat exchange and pressure drop of nanofluid. The cross-section aspect ratio of tube in the heat exchanger is another important factor to be taken into consideration.</p> |
| first_indexed | 2024-03-12T06:06:09Z |
| format | Article |
| id | doaj.art-d3aa400eef3f4064a95ec0d968edf19c |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T06:06:09Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-d3aa400eef3f4064a95ec0d968edf19c2023-09-03T03:37:50ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161488Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flowTeng Tun-ChienTeng Tun-PingHung Yi-HsuanChen Jyun-Hong<p>Abstract</p> <p>This study analyzes the characteristics of alumina (Al<sub>2</sub>O<sub>3</sub>)/water nanofluid to determine the feasibility of its application in an air-cooled heat exchanger for heat dissipation for PEMFC or electronic chip cooling. The experimental sample was Al<sub>2</sub>O<sub>3</sub>/water nanofluid produced by the direct synthesis method at three different concentrations (0.5, 1.0, and 1.5 wt.%). The experiments in this study measured the thermal conductivity and viscosity of nanofluid with weight fractions and sample temperatures (20-60°C), and then used the nanofluid in an actual air-cooled heat exchanger to assess its heat exchange capacity and pressure drop under laminar flow. Experimental results show that the nanofluid has a higher heat exchange capacity than water, and a higher concentration of nanoparticles provides an even better ratio of the heat exchange. The maximum enhanced ratio of heat exchange and pressure drop for all the experimental parameters in this study was about 39% and 5.6%, respectively. In addition to nanoparticle concentration, the temperature and mass flow rates of the working fluid can affect the enhanced ratio of heat exchange and pressure drop of nanofluid. The cross-section aspect ratio of tube in the heat exchanger is another important factor to be taken into consideration.</p>http://www.nanoscalereslett.com/content/6/1/488alumina (Al2O3)heat exchange capacitylaminar flownanofluidpressure drop |
| spellingShingle | Teng Tun-Chien Teng Tun-Ping Hung Yi-Hsuan Chen Jyun-Hong Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow Nanoscale Research Letters alumina (Al2O3) heat exchange capacity laminar flow nanofluid pressure drop |
| title | Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow |
| title_full | Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow |
| title_fullStr | Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow |
| title_full_unstemmed | Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow |
| title_short | Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow |
| title_sort | performance evaluation on an air cooled heat exchanger for alumina nanofluid under laminar flow |
| topic | alumina (Al2O3) heat exchange capacity laminar flow nanofluid pressure drop |
| url | http://www.nanoscalereslett.com/content/6/1/488 |
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