碩士 / 中原大學 / 機械工程研究所 / 97 / The thesis presented a study on the optimal analysis of fin-type heat sink using the electronic system design software, Icepak, to obtain the flow field and heat transfer information for the thermal analysis and using the dynamic quadratic (dynamic-Q) optimal method for the subsequent optimal analysis to determine the geometric parameters of the fin-type heat sink.
The main tasks of this study were divided into the following three parts:
(1)Per the specifications set by the Solid State Technology Association, an experimental platform was established to test two fin-type heat sinks available commercially to verify the feasibility of the software to be used for the analysis.
(2)Select one fin-type heat sink as the prototype for the optimal analysis. Under the space constraints, develop two optimal objectives: the least energy optimization and the doubly optimization of both least energy and least material.
(3)Under the double constraints of specific space and thermal resistance, determine the optimal design by using the least material optimization.
This study was based on natural convection for the thermal analysis, accounting for the limitations associated with the extrusion manufacturing process to construct a complete numerical simulation model for the fin-type heat sink in order to achieve the goal of global optimization.
With a variety of power density conditions, using the fin-type heat sink geometry parameters as the de-sign variables (such as thickness, width, and depth of the heat sink base, and thickness, height, and spacing of the fin, etc.), and under the specific space constraints, the optimal analyses of fin-type heat sinks were carried out. Optimal algorithms and parameters being considered for the analyses were the minimum thermal resistance (least energy) optimization, the maximum mass specific heat transfer coefficient (doubly optimization of both least energy and least material), and the doubly optimum objectives. In the process, the relationships of optimum objectives with the geometric parameters of fin-type heat sinks have been evaluated.
In addition, further consideration of the double constraints of space and thermal resistance were done to analyze the least material optimization, resulting in more cost-effective recommendations of improving the geometry.
The results obtained from this study indicated that using the optimal design methodology developed in this study, a number of objectives for optimal design could be effectively implemented and recommendations of improvement in the optimal design of the configuration parameters for the fin-type heat sink could be achieved.
| Identifer | oai:union.ndltd.org:TW/097CYCU5489031 |
| Date | January 2009 |
| Creators | Chia-Yuan Nien, 粘嘉原 |
| Contributors | Jyh-Tong Teng, 鄧治東 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 79 |
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