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系統識別號 U0026-2707201815061200
論文名稱(中文) 脈衝管式史特靈冷凍機之性能增進
論文名稱(英文) Performance Improvement of a Pulse-Tube Stirling Cooler
校院名稱 成功大學
系所名稱(中) 航空太空工程學系
系所名稱(英) Department of Aeronautics & Astronautics
學年度 106
學期 2
出版年 107
研究生(中文) 黃景煜
研究生(英文) Ching-Yu Huang
學號 P46051424
學位類別 碩士
語文別 中文
論文頁數 95頁
口試委員 指導教授-鄭金祥
口試委員-呂宗行
口試委員-鄭宗杰
口試委員-林大偉
中文關鍵字 脈衝管  史特靈冷凍機  性能增進 
英文關鍵字 Pulse-tube  Stirling cooler  Performance improvement 
學科別分類
中文摘要 本研究對現有脈衝管式史特靈冷凍機進行性能改善,理論模式將冷凍機分成七個腔室,分別為壓縮室、後冷卻器、再生器、製冷頭、脈衝管、冷卻器以及儲氣室,並透過活塞位移以及初始條件求出各腔室之體積、質量及壓力後,將系統因內部產生的損失之影響帶入能量方程式得到各腔室溫度及製冷頭無負載溫度,並進一步求得性能係數,另外針對轉速分析其對溫度影響找出不同壓力下最佳操作轉速。另在實作上將線性馬達機構改為曲柄機構,實際量測冷卻器、後冷卻器之溫度,並架設可量測實體冷凍機溫度與性能之系統。最後將理論模擬與實驗結果相互比較以作為未來設計改良之參考。本研究發展之脈衝管式史特靈冷凍機,於環境溫度30 時,工作流體為5 atm氦氣之操作條件、馬達轉速2000 rpm,可獲得約195 K之無負載製冷溫度。
英文摘要 In this study, the performance of the existing pulse tube Stirling cooler is improved. The linear motor mechanism is changed to a crank mechanism. The theoretical model divides the cooler into seven chambers, which are compression chamber, aftercooler, regenerator, cold head, pulse-tube, heat exchanger, and reservoir. After finding the volume, the mass, and the pressure of working fluid in each chamber according to the displacement of the piston and the initial conditions, then the internal loss, the temperature of working fluid in each chamber, and the no-loading temperature of the cooling head can be solved by energy equations. Eventually, the coefficient of performance can be obtained. In addition, the influence of the rotation speed on no-loading temperature is analyzed to find the optimal operating rotation speed under different pressures. In order to verify the present model, the temperatures of the heat exchanger, the cold head, and the aftercooler are measured, and an experimental system for measuring the temperature and performance of the cooler is also set up. The pulse-tube Stirling cooler developed in this study can achieve a no-load cooling temperature about 195 K at an ambient temperature of 303 K, with 5 atm charged helium at 2000 rpm.
論文目次 摘要 ----------I
ABSTRACT II
誌謝 ----------VIII
目錄 ----------IX
表目錄 ---------XIII
圖目錄 ---------XIV
符號索引 --------XVII
第一章 前言 1
1.1 研究背景 1
1.2 史特靈冷凍機介紹 2
1.2.1 發展歷史 2
1.2.2 構造和原理 2
1.2.3 實際應用 3
1.3 脈衝管式史特靈冷凍機 4
1.3.1 發展背景 4
1.3.2 原理 5
1.4 研究方向 6
1.5 論文架構 7
第二章 理論分析 8
2.1 活塞位移 8
2.2 初始條件 9
2.3 熱力模式 14
2.4 再生室 21
2.5 慣性管 23
2.6 壓力損失 25
2.7 後冷卻器與冷卻器 29
2.8 製冷頭 30
第三章 冷凍機設計 33
3.1 脈衝管式史特靈冷凍機設計與改良 33
3.1.1 曲柄機構 33
3.1.2 壓縮比 34
3.1.3 工作流體 34
3.1.4 密封元件 35
3.1.5 後冷卻器 35
3.1.6 再生器 36
3.1.7 製冷頭與冷卻器 36
3.1.8 脈衝管 37
3.1.9 慣性管 37
3.1.10 儲氣室 38
3.2 冷凍機組裝與測試 38
第四章 實驗設備與量測系統 40
4.1 實驗目的 40
4.2 實驗設備與量測系統 40
4.2.1 熱電偶 40
4.2.2 直流無刷馬達 41
4.2.3 扭矩計 41
4.2.4 資料擷取器 41
4.2.5 流量計 42
4.2.6 熱顯像儀 42
4.3 實驗步驟與量測 43
第五章 結果與討論 44
5.1 數值模擬參數分析 44
5.1.1 系統壓力的影響 44
5.1.2 環境溫度之影響 44
5.1.3 慣性管內徑之影響 45
5.1.4 慣性管長度之影響 45
5.1.5 馬達轉速之影響 45
5.1.6 冷卻器性能之影響 46
5.1.7 儲氣室體積之影響 46
5.2 實驗結果與驗證 46
5.2.1 壓力 47
5.2.2 馬達轉速 48
5.2.3 慣性管 48
5.2.4 冷卻器性能 49
5.2.5 性能係數 49
第六章 結論 51
參考文獻 53
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