| 研究生: |
馮建華 Feng, Jian-Hua |
|---|---|
| 論文名稱: |
維勒米爾式冷凍機之理論分析與性能測試 Theoretical Analysis and Performance Testing of a Vuilleumier Refrigerator |
| 指導教授: |
鄭金祥
Cheng, Chin-Hsiang |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 航空太空工程學系 Department of Aeronautics & Astronautics |
| 論文出版年: | 2020 |
| 畢業學年度: | 108 |
| 語文別: | 中文 |
| 論文頁數: | 88 |
| 中文關鍵詞: | 維勒米爾冷凍機 、熱壓縮 、理論模型 、實驗測試 |
| 外文關鍵詞: | Vuilleumier refrigerator, Thermal compression, Theoretical model, Experimental test |
| 相關次數: | 點閱:72 下載:0 |
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本研究建立一套理論模型預測維勒米爾冷凍機之熱力性質與製冷性能,並設計、製造與量測冷凍機之性能,理論模型將冷凍機分為五個工作區間進行分析,為熱腔室、熱再生室、中間腔室、冷再生室與冷腔室,以及考慮背壓室對工作區間熱力性質的影響,並針對幾何參數、填充壓力、馬達轉速、加熱溫度、冷卻溫度與熱負載等參數的影響進行討論。實驗方面架設冷凍機之溫度與性能的量測系統,透過不同操作參數之模擬結果和實驗數據進行參數分析,探討不同操作參數對性能的影響,作為未來設計改良之參考方向。
本研究設計之維勒米爾冷凍機於填充壓力22 bar、馬達轉速600 rpm、加熱溫度900 K與冷卻溫度276 K之操作條件下,製冷頭能夠達到221 K之無負載溫度,當加入0.7 W之熱負載時,能夠得到252.6 K之製冷溫度與0.0068之性能係數。
In this study, a Vuilleumier refrigerator is analyzed with thermodynamic modeling. Periodic variations in volume, mass, pressure and temperature in different chambers of the cylinder are predicted. The affect of clearance leakage and buffer chamber on the working space are considered. A prototype of the Vuilleumier refrigerator is manufactured, and the influence of each operating parameter on the cold head temperature in theoretical model is discussed and compared with experiment results. The operating parameters include charged pressure, rotating speed, heating temperature and cooling temperature. The refrigerator can reach a no-loading cold head temperature of 221 K at the operating conditions of 16 bar charged pressure, 600 rpm rotating speed, 900 K heating temperature, and 276 K cooling temperature for experiment.
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