扁平管平行流熱交換器於窗型空調機之應用研究

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研究生：	沈坤奇 Kun-Quin Shin
論文名稱：	扁平管平行流熱交換器於窗型空調機之應用研究
指導教授：	楊建裕 Chien-Yuh Yang
口試委員:
學位類別：	碩士 Master
系所名稱：	工學院 - 機械工程學系 Department of Mechanical Engineering
畢業學年度：	88
語文別：	中文
論文頁數：	114
中文關鍵詞：	扁平管平行流蒸發器(PFE) 、扁平管平行流冷凝器 (PFC) 、扁平管平行流熱交換器(PFHE) 、室內空調系統(RAC) 、鰭管式熱交換器、扁平鋁擠型管
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本研究係探討扁平管平行流熱交換器於窗型空調機之應用研究，作者係採用本實驗室先前所發展出的扁平管平行流熱交換器最佳化程式設計為基礎，依據一市售5000 kcal/hr之窗型空調機的運轉條件，重新設計其所需之毛細管、扁平管平行流冷凝器及扁平管平行流蒸發器。先以扁平管平行流冷凝器更換窗型空調機之鰭管式冷凝器，並計算出新系統毛細管的長度，組裝測試，以驗證扁平管平行流冷凝器於窗型空調機之適用性，然後將鰭管式熱交換器全部以扁平管平行流蒸發器代替，並計算出新系統毛細管的長度，組裝測試，以驗證扁平管平行流熱交換器於窗型空調機之適用性。
由測試的結果得知，扁平管平行流冷凝器非常適用於窗型空調機上，扁平管平行流冷凝器約只需鰭管式熱交換器43%即可達到相同的熱負載；但扁平管平行流蒸發器因為凝結水無法順利排除，導致系統之性能下降，而使其優越的性能相對失色，假若可以解決排水的問題則扁平管平行流熱交換器非常適用於窗型空調機上，其不只提高效率、縮小產品體積，更可以減少資源的使用符合環保的需求

頁數
摘要…………………………………………………………………... i
目錄…………………………………………………………………... ii
表目錄………………………………………………………………… v
圖目錄……………………………………………………………… vii
符號說明……………………………………………………………. x
第一章　前言……………………………………………………..… 1
1 研究動機………………………………………………. 1
2 研究目的………………………………………………… 3
第二章　文獻回顧………………………………………………… 9
1 壓縮機之演進與選用.…………………..………………. 9
2 毛細管之分析及簡易之計算………..……………….… 13
2.1 毛細管管內的流動………………………….…… 14
2.2 毛細管單相區壓降之計算………………..……. 18
2.3 毛細管兩相區壓降之計算………………..……. 19
2.3.1 分離流模式…………...………………………. 19
2.3.2 均質流模式…..………………………….….… 22
2.3.3 微小圓形管內之壓降分析.………………. 23
3 熱交換器之演進與選用.…………………………….... 24
3.1 圓管式熱交換器…………………………………. 25
3.2 扁管式熱交換器…………………………………. 25
3.2.1 蛇盤管熱交換器……...…………………....… 26
3.2.2 平行流熱交換器…………………..…….….… 27
4 系統平衡…………………….…………………………….... 28
第三章　系統設計與實驗方法….…………………………………... 57
1系統設計…………………………………………..………. 57
1.1 系統設計之步驟………………………………….. 57
2測試設備…….…………………………………………….. 58
2.1測試設備.…………………………………………….. 58
2.2風量量測用之風道設備……………………….... 59
2.3 量測元件….………………………………………... 60
2.4 資料擷取系統……………………………………... 61
3 測試條件及測試步驟………..……………………… 61
4 資料分析方法……………………………………….... 62
4.1測試條件及測試步驟.……………………..… 62
4.2溼度的計算…….…………………………..…… 64
4.3空氣流量量測…………………………………..… 66
4.4冷房能力和EER值得計算………………….. 70
第四章　測試數據分析與結果討論…………………..….… 86
1 測試設備穩定度分析……………………………..... 86
2 測試結果……………..……………………………..... 87
2.1 冷凝器採用扁平管平行流熱交換器之測試結果…………………………………………….… 88
2.2 冷凝器及蒸發器皆採用扁平管平行流熱交換器之測試結果……………………………… 89
2.3 將扁平管平行流蒸發器旋轉900之測試結果……………………………………………… 91
3 討論…………………………………………………..... 93
第五章　結論…………………………………………………….... 110
參考文獻………………………………………………………….... 111

                                

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