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研究生:林致平
研究生(外文):Jyh Pyng Lin
論文名稱:噴射式雙循環冷凍系統研究
論文名稱(外文):Research of the ejector binary-cycle refrigeration system
指導教授:黃秉鈞黃秉鈞引用關係
指導教授(外文):Bin Juine Huang
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:機械工程學研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:中文
論文頁數:232
中文關鍵詞:噴射器雙循環冷凍系統儲冰系統熱驅動噴射式冷卻系統
外文關鍵詞:ejectorbinary-cycle refrigeration systemice-storage systemheat driven jet cooling system
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本論文致力於改良以噴射式冷卻機組搭配壓縮機組的雙循環冷凍系統,研究內容從系統理論分析、硬體架構設計改良、性能測試評估、實際操作測試均作系統性的探討。
本論文發展雙循環系統經驗分析模式,以文獻[55]噴射器經驗式(經驗式設計噴射器,約有-10%至+14%的誤差[55])設計評估本研究改良之雙循環冷凍系統。理論分析與測試結果顯示,於冷氣空調系統( =+5℃)、儲冰空調系統( = -5℃)基礎設計點,噴射式冷卻機組均可提升單壓縮機系統的COP約10﹪或更甚,比文獻[55] 7.4%多出2.6﹪或更甚。另外,本研究成功提升噴射式冷卻機組的臨界冷凝背壓溫度 ,使其更能實際運用於儲冰空調系統。
本論文亦致力於研究雙循環儲冰空調實際應用的可行性,以設計一新型盤管式儲冰槽,實際測試儲冰系統於非穩態下運轉情形,以利後進研究、改良雙循環系統於儲冰運轉的性能。
本研究已將噴射器應用在雙循環冷凍系統上的技術,成功地改進其性能,對於雙循環儲冰系統在實際應用上有進一步的貢獻。

The purpose of this dissertation is to improve the efficiency of a binary-cycle refrigeration system that combines a compression system with a heat driven ejector cooling system. This paper will introduce the theoretical analysis of the binary-cycle refrigeration system , reformulate the frame design of the binary hardware , estimate its performance , and draw conclusions from the real applications of the binary-cycle refrigeration system .
This study advances the theory for the binary-cycle refrigeration system developed by the Jet Empirical Correlation . (According to the literature , the jet empirical correlation predicts the system entrainment ratio ω with an error range between -10﹪and +14﹪) The theoretical prediction and the experiment shows that the ejector cooling system can enhance COP by 10﹪or more (which is 2.6﹪more than 7.4﹪recorded in the literature) in comparison with the single-compressor system at the design point of the air condition system( =+5℃) and the ice-storage condition system( = - 5℃) . In addition , the experiment successfully increases the critical condensing temperature ( )of the ejector cooling system , making the integration of the ice-storage condition system possible .
To put the binary-cycle refrigeration system - the ice-storage condition system into practice , this study investigates the possibility of operation in the binary-cycle ice-storage condition system in a new coil-type ice-storage tank . This new combination is tested in a real and unsteady environment to provide as a groundwork for future studies .
This study has successfully applied the ejector technology to the binary-cycle refrigeration system , and makes a significant contribution to this field of studies .

第一章、緒論
1.1 研究目的 1
1.2 研究方法 2
1.3 文獻回顧 2
1.4 研究內容 7
第二章、雙循環冷凍系統分析
2.1前言 9
2.1.1系統理論分析改良 10
2.2噴射器性能理論分析 11
2.2.1 噴射器運轉機制 11
2.2.2 噴射器性能分析 12
2.3 壓縮機系統理論分析 14
2.3.1 系統理論分析假設 14
2.3.2 統御方程式 15
2.3.3 壓縮機特性測試 17
2.4雙循環冷凍系統設計分析 21
2.4.1 系統理論分析假設 21
2.4.2 統御方程式 23
2.4.3 系統分析獨立變數 24
2.5分析結果與討論 28
2.5.1雙循環系統性能分析 28
2.5.2雙循環及單循環系統的性能比較 36
第三章、雙循環冷卻系統原型機設計
3.1基準點設計 58
3.2原型機規格與細部設計 58
3.2.1 系統配置 58
3.2.2 系統細部規格 67
3.2.3 主要修改部分 70
3.3電控設計 73
3.4水測設計 74
3.5硬體架設 75
第四章、雙循環冷凍系統性能測試評估
4.1 前言 78
4.1.1 雙循環冷凍系統測試目的 78
4.1.2 單壓縮機系統性能測試 78
4.2 雙循環冷氣空調系統測試評估 83
4.2.1 系統制冷量 84
4.2.2 壓縮機輸入功 96
4.2.3 系統 99
4.2.4 系統 102
4.2.5 雙循環冷氣系統溫度分佈 106
4.2.6 雙循環冷氣系統流量分佈 113
4.2.7 雙循環冷氣系統噴射式冷卻機組測試性能115
4.3雙循環儲冰空調系統測試評估 124
4.3.1 系統制冷量 124
4.3.2 壓縮機輸入功 136
4.3.3 系統 139
4.3.4 系統 143
4.3.5 雙循環儲冰系統溫度分佈 146
4.3.6 雙循環儲冰系統流量分佈 152
4.3.7 雙循環儲冰噴射式冷卻機組測試性能155
4.3.8 固定毛細管長度、固定針閥開度測試163
4.4 分析結果與討論 165
4.4.1 系統COP、EER性能比較與討論 165
4.4.2實驗結果與系統理論分析比較 165
4.4.3 雙循環冷氣空調、儲冰空調系統應用可行性167
4.4.4 噴射式機組蒸發溫度 與臨界冷凝溫度 比較與討論170
4.4.5 噴射式冷卻機組產生器溫度比較與討論170
第五章、雙循環儲冰空調系統實際應用測試
5.1研究目的 172
5.2 硬體架設 173
5.3 運轉說明 179
5.4 實驗測試 183
5.4.1 儲冰過程、釋冰過程溫度分佈 184
5.4.2 儲冰槽制冷量 188
5.5 結果與討論 189
第六章、結論與未來發展方向
6.1 結論 193
6.2 未來發展方向 194

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