「世大智科/天才家居」-我們創業囉
Contact Professor: Yeh-Liang Hsu (徐業良)

九十五學年度元智大學機械工程研究所在職專班黃喻鴻碩士論文

Master thesis by Y. H. Huang, Mechanical Engineering Department, Yuan Ze University, 2007

95碩士論文:運用於電源供應器中之多點熱源散熱片最佳化設計

  電源供應器中之熱源大多來至功率晶體,為了降低熱源的產生,將晶體鎖在散熱片上,利用強制對流方式將晶體所產生的熱量帶走。目前的散熱片設計都趨向於加大散熱片面積,增大風扇的流量,來提高散熱效能。然而考慮到空間與成本的限制下,散熱片的設計就不只是加大面積或增大風量,而是要在空間和成本的限制下,達到最佳效能的散熱片設計。
  本文將針對高瓦數電源供應器之功率晶體散熱片進行最佳化設計,以尋找最適當的尺寸去達成最佳的散熱效率。許多相關研究針對單一熱源在強制對流下的熱傳現象做散熱片最佳化的探討,本文的重點則在於研究多熱源時的散熱情況。本研究中,由散熱鰭片熱阻分析出發,探討單/多顆晶體不同位置對散熱片的影響,並導出晶體熱源方程式,再以典型的最佳化過程來求得散熱片最佳的設計參數,最後透過對最佳解之靈敏度分析與參數分析,提出多熱源散熱片之設計準則,以為工程師設計時之參考。

Heatsink Optimization of Multi-Heat Source for Power Supply Unit

  Most of the heat source of power supply comes from the power device. In order to decrease the heat, power device should be attached to the heat sink. Increasing the area of the heat sink with higher fan speed is the current design trend to increase the performance of heat exchange. However, constraints in space and cost also need to be considered to have the best heat sink design.
  In this thesis, the design of the power device heat sink for high power supply units is optimized for the best heat dissipated efficiency. Research literatures on heat conduction of single heat source under forced convection were reviewed first. The effect of the location of the single/multi power device and the design variable of the heat sink were also studied. An optimization model was constructed and the optimal design was solved. CAE tools were used to validate the optimum design results. The design guidelines were generated from sensitivity analysis and parametric analysis.

Academic Thesis
Presentation Files
Last Updated:2010/4/30