碩士 / 國立虎尾科技大學 / 航空與電子科技研究所 / 102 / The multi-conjugate heat transfer for the discrete block heat sources is widely encountered in engineering applications, such as cooling of electronic equipments, photovoltaic cells and products of light emitting diode. This study aims to investigate the conjugate conduction－natural convection characteristics for block heat sources mounted on the wall in a 3-D closed cabinet. Attention is given to the enhancement of cooling performance by installing fin and constructing air vents. The numerical simulation is rigorously performed in this study. The numerical computation domain covers the cabinet and its surrounding area. The boundary conditions of the temperature and heat flux for cabinet wall are not previously known and have to be found in the solution processes.
Results show that, for the fin number FN=23, the hot spot temperature of the blocks can be reduced up to 28.47% as Ax = 0.5, Az = 0.1, Bx = By = 0.1, Bz=0.01, Ra =5 × 10^6, Kba=5000, Kca=600, Kfa = 8000. The hot spot temperature of the blocks can be reduced by 9.97% when cabinet wall constructing air vents with Kca=8000, SD=0.04, SN=16. The difference of hot spot temperature of the blocks is about 35.42% for Kca=600, Kfa=8000, FN=23, SD=0.04, SN =6 when the fins and air vents are combined.
| Identifer | oai:union.ndltd.org:TW/102NYPI5294013 |
| Date | January 2014 |
| Creators | Chih-Ho Yang, 楊致和 |
| Contributors | Yeong-Ley Tsay, 蔡永利 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 59 |
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