碩士 / 遠東技術學院 / 機械研究所 / 94 / Abstract
With the advancement of science and technology, computer becomes lighter, thinner and smaller, and is provided with more functions. This causes increase of the heat produced by a computer. Based on numerical simulation and experiment, this research probes into the performance of separated thermal module in barebones computer. The advantage of a separated thermal module lies in the fact that it can transmit heat through a heat pipe to fins and then discharge heat by a fan effectively. In the numerical analysis of this paper, the parameters such as the interval and shape of fins and the mounting of flap are considered, and analysis is made on the cooling performance of the modules in connection with these parameters. In the experiment, the performance is analyzed according to the temperature distribution of the modules.
According to the different combinations of shape and interval, the modules are divided into six groups: A, B, C, D, E, and F. Where, Group A consists of P415 standard thermal modules with 43 fins each; the fin interval of a module in Group B is changed to 12pieces (2.1mm) and 29 pieces (1.8mm); Group C, 10pieces (2.5mm) and 29pieces (2.5mm); Group D, 15pieces (1.8mm), 16 pieces (1.575mm) and 12pieces (2.1mm); the number of fins of a module in Group E is the same as that of a module in Group A, but a part of 300mm2 (60mm×5mm) is cut from each fin in the middle opposite to fan motor; a module in Group F differs from a module in Group A for it has 43 flaps around heat pipe (the space between flap and heat pipe is 0.7mm).
By comparing the result of numerical analysis of Group A with those of other groups, it is found that the cooling efficiency of Group B, C, and D is reduced by about 1～2.8%, because they have less fins and different intervals. The temperature of Group E and F is about 0.2～0.6℃ lower than that of Group A, and the cooling efficiency is improved by 0.5～1.4% approximately.
In the experiment of this research, the temperature distribution of the heat pipes of Groups A, B, C and D is measured. From the result of experiment, it is found that the temperature of heat pipes of the modules in Group D is distributed the most evenly; Group C, the second; and Group B, the worst.
| Identifer | oai:union.ndltd.org:TW/094FEC07489019 |
| Date | January 2006 |
| Creators | Kuo-Yuan Lee, 李國源 |
| Contributors | Chuang Shu-Hao, 莊書豪 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 73 |
Page generated in 0.0019 seconds