碩士 / 龍華科技大學 / 機械工程系碩士班 / 106 / The development of integrated circuit nano-ization makes the function more powerful, but the generated thermal energy is also higher, which has seriously affected the normal operation of the integrated circuit. Therefore, research on heat-dissipating fins is urgently needed. This study used the Taguchi method to find the best heat dissipation efficiency and find the best combination of parameters.
With Intel's CPU, the four different operating temperatures (85℃, 65℃, 50℃ and 45℃) are first thermally balanced in a closed environment, and then forced convection of the fins. The fins are made of 5052 aluminum, and the fin shape is divided into solid cylinder, solid hexagonal column, hollow cylinder, hollow hexagonal column and solid cone. It is expected to find better fin shape parameters, and the result shows cylindrical fins. Compared with hexagonal columns, the film has a lower Reynolds number, and it is less prone to turbulence during forced convection, and it is easy to take away heat. The conical fins have better heat dissipation efficiency than the cylindrical fins. It proves that the angle between the fins and the bottom plate also affects the turbulence phenomenon. The tilt angle will guide the wind flow upwards, reducing the wind flow and the bottom plate. Flow conditions, which in turn improve convective heat transfer efficiency.
In this paper, the high-thickness ratio of the fins is tested. The experimental results show that the optimized combination sample has a height-to-thickness ratio of 7:4 (column height 14 mm, bottom thickness 8 mm), and the heat sink fin bottom area must be directly attached to the heat. Source, first set the ratio of the bottom volume to the column volume to optimize, the bottom heat energy can be smoothly guided to each pillar type, such as the column volume is too small is the heat resistance, resulting in the convection area heat dissipation area can not be increased Its heat dissipation efficiency.
| Identifer | oai:union.ndltd.org:TW/106LHU00490020 |
| Date | January 2018 |
| Creators | Hsu, Hung-Chan, 許宏展 |
| Contributors | Kao, Jin-Yih, 高進鎰 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 64 |
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