桌上型電腦主機散熱風扇最佳配置之研究

Study of Optimal Configuration for Fan Cooling System of Desktop Computers

林奎良(Kuei-Liang Lin)

指導教授 ： 李宗興

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2012年)

摘要

目前一般桌上型電腦主機的設計有越來越小的趨勢，但中央處理器的時脈及發熱量也逐漸升高，因此電腦主機的散熱設計也變得越來越困難與重要。本文主要針對一般桌上型的電腦系統的散熱設計進行模擬及最佳化分析。將電腦系統位於前方、後方、及側邊的風扇為參數，設定吹出及吸入兩種不同的條件來模擬各種組合，探討各種參數組合情況下針對CPU的散熱能力加以評比及探討。本文使用熱流模擬軟體ANSYS FLUENT進行模擬分析。利用軟體將流場可視化及較不耗費成本之優點來模擬出各種風扇條件組合結果，觀察系統內部流場的狀況及探討各種組合對於CPU散熱的影響。由模擬結果發現，以前方風扇為吹出、後方風扇為吹入、側邊風扇為吹入之組合散熱效果最佳，CPU溫度與效果最差之組合偏低許多，系統內流場所產生的回流現象也較少。

關鍵字

桌上型電腦 ； 散熱風扇 ； 最佳配置

並列摘要

Design of desktop computer has become more and more small, but the processor frequency comes faster and the heat is gradually increased. The thermal design of the desktop computer has become increasingly difficult and important. Optimization for system thermal design of the desktop computer is the primary research goal for this paper. Use the front fan, rear fan and side fan as a parameter, set to blow and the inhalation of two different conditions to simulate various combinations. And find the combination of various parameters for the CPU cooling capacity. This article uses the heat flow simulation software ANSYS FLUENT to simulate result. The flow field visualization and less expensive the cost advantages of using software to simulate the combined results of a variety of fan conditions, observe the status of the system of internal flow field and find the impact of various combinations of CPU cooling. According results found that previous side fan for blown the rear fan is blowing, the side of the cooling fan is blown into the combination of the CPU temperature is the effect of the worst combination of low many streams within the system places reflow phenomenon less.

並列關鍵字

Desktop computer ； Fan Cooling System ； Optimization

參考文獻

[7] 王崇岳 "桌上型電腦散熱模組之參數分析." 中原大學機械系碩士學位論文, 2005.

[8] 陳致偉 "田口法在準系統電腦散熱設計之應用." 大同大學電機工程學系所學位論文, 大同大學. 碩士, 2006.

[9] 廖瑋智 "電腦的最佳散熱模式之效益分析." 成功大學工程科學系專班學位論文, 成功大學. 碩士, 2008.

[4] M. Turner, "All You Need to Know About Fans." Electronics Cooling Magazine, 1996.

[5] S. Shuler, "Thermal management: Understanding how to incorporate effective thermal strategies into overall portable electronic design for better performance." Materials and Design 21(1): 39-44, 2000.