研究生: |
劉勝富 |
---|---|
論文名稱: |
壓電風扇的散熱性能研究 An Experimental Investigation of the Thermal Performance of Piezoelectric Fans |
指導教授: | 許文震 |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 97 |
中文關鍵詞: | 壓電風扇 、電子散熱 、熱對流 |
外文關鍵詞: | piezoelectric fan, electronics cooling, convection |
相關次數: | 點閱:1 下載:0 |
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壓電風扇是一種微型的散熱元件,具有體積小、功耗低、噪音低等優點,一般認為適合應用在小型電子產品上。本文主要是利用實驗的方法去探討: 1. 壓電風扇規格參數 (包括:尖端位移、共振頻率、扇葉寬度) 與散熱性能間的關係,2. 壓電風扇的擺放方式 (包括: 擺放角度、擺放高度與擺放深度) 對散熱效能的影響。實驗結果顯示散熱性能隨著尖端位移、共振頻率與扇葉寬度增加而上升,並且尖端位移的重要性大於共振頻率,而共振頻率又大於扇葉寬度的重要性,同時,壓電風扇具有讓熱源溫度比自然對流條件低38○C 的散熱能力。此外,實驗結果也顯示出擺放的方式也是影響熱傳性能相當的重要參數,若壓電風扇水平擺放時,最佳的擺放深度為0.5,即壓電風扇的扇葉尖端置於熱源中心上方,然而當壓電風扇垂直擺放時,最佳的擺放深度則變為0.25,即覆蓋在熱源上方的扇葉長度為熱源邊長的1/4的位置。此外,壓電風扇的散熱性能會隨著擺放高度增加而下降,其中,當壓電風扇垂直擺放時,其散熱性能隨高度增加而下降的幅度較明顯。
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