碩士 / 國立成功大學 / 工程科學系 / 107 / This article focuses on analyzing the convection coefficient for single and double fins in a forced convection environment by the means of experimental and numerical methods.
After deducting the heat loss (of the fin base and bottom block) from the heater power of the heat sink module of fin, the heat dissipation of the fin can be obtained and it can be deduced as a linear function of the fin measured temperature, αTfin+β. The convection coefficient can then be calculated and also expressed as a function of the fin temperature. From the analysis result, it can be found that the extreme value of the convection coefficient is α/Afin, where Afin is the surface area of the fin. The change trend of the convection coefficient with the fin temperature can be determined by αT_∞+β, where T_∞ is the environment temperature.
The experimental results show that the use of a single-fin heat sink at low wind speed results in the higher convection coefficient, while the use of double-fin heat sink at high wind speeds leads to the higher convection coefficient.
The simulation results indicate that the convection coefficient of the double fin heat sink is generally larger than the convection coefficient of the single fin heat sink.
| Identifer | oai:union.ndltd.org:TW/107NCKU5028046 |
| Date | January 2019 |
| Creators | Yu-HuiWang, 王喻暉 |
| Contributors | Long-Sun Chao, 趙隆山 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 91 |
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