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論文中文名稱:可變Vi螺旋式壓縮機應用於熱泵系統之性能分析 [以論文名稱查詢館藏系統]
論文英文名稱:The Performance Analysis of Screw Heat Pump with Variable Vi [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:機電學院
系所名稱:能源與冷凍空調工程系
畢業學年度:106
畢業學期:第一學期
出版年度:106
中文姓名:楊盛閔
英文姓名:Shng-Min Yang
研究生學號:104458034
學位類別:碩士
語文別:中文
口試日期:2018/01/24
論文頁數:62
指導教授中文名:李魁鵬
指導教授英文名:Kuei-Peng Lee
口試委員中文名:李魁鵬;楊安石;黃國倉
口試委員英文名:Kuei-Peng Lee;AN-Shi Yang;Guo-Cang Huang
中文關鍵詞:熱泵可變Vi螺旋式壓縮機回歸模型節能效益
英文關鍵詞:Heat PumpVariable Vi Screw CompressorRegression ModelEnergy-Saving Benefit
論文中文摘要:本研究發展一套搭載可變Vi壓縮機之熱泵系統,利用可變Vi控制、壓縮機變頻控制與膨脹閥控制達到系統運轉最佳化,並且參考EN 14825熱泵部分負載測試概念搭配可變Vi控制進行實驗,實驗基準條件採用現場設計冰水溫度7℃及R134a冷媒性質搭配壓縮機可變Vi等條件建立實驗。
本研究藉由熱泵回歸模型建立與〖COP〗_H性能方程式,由實驗得知〖COP〗_H可以表示為冰水出水溫度、熱水出水溫度與蒸發能力的函數,其中A_0、 A_1、A_2透過可以現場量測與數據回歸獲得,研究結果表明適用於熱泵性能回歸與預測。
由研究結果得知可變Vi熱泵冰水出水溫度重置節能效益約4.29%;熱水出水溫度重置節能效益約2.92%。壓縮機可變Vi節能效益,在熱水出水溫度49.5℃條件下,Vi由3.5修正為3.0,其節能效益約3.54%;在熱水出水溫度39.5℃條件下,Vi由3.5修正為2.4,其節能效益約10.49%。
論文英文摘要:This study develops a Screw Heat Pump with Variable Vi, the system operation is optimized by variable Vi control, compressor variable frequency control and expansion valve control. The experiment is conducted referring to EN 14825 heat pump part load test concept and variable Vi control. The experiment is set up based on the onsite design chilled water temperature 7℃ and R134a refrigerant properties and screw compressor with variable Vi.
According to the experiment, the heat pump regression model and 〖COP〗_H performance equation can be expressed as the functions of chilled water outlet temperature, hot water outlet temperature and evaporative capacity, where A_0, A_1, and A_2 can be obtained by field measurement and data regression, which are applicable to the heat pump performance regression and prediction according to the findings.
According to the findings, the variable Vi heat pump chilled water outlet temperature resetting energy-saving benefit is about 4.29%; the hot water outlet temperature resetting energy-saving benefit is about 2.92%. In terms of compressor variable Vi energy-saving benefit, the Vi is corrected from 3.5 to 3.0 when the hot water outlet temperature is 49.5℃, the energy-saving benefit is about 3.54%. The Vi is corrected from 3.5 to 2.4 when the hot water outlet temperature is 39.5℃, the energy-saving benefit is about 10.49%.
論文目次:摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 v
表目錄 vii
圖目錄 viii
第一章 緒論 1
1.1研究背景與動機 1
1.2文獻回顧 4
1.3研究目的 8
1.4研究架構 9
第二章 研究理論與方法 10
2.1壓縮機 10
2.1.1壓縮機種類 10
2.1.2螺旋式壓縮機(Screw Compressor) 13
2.1.3. 螺旋式壓縮機之固定體積比控制(Fixed Vi Screw Compressor) 15
2.1.4螺旋式壓縮機之可變體積比控制(Variable Vi Screw Compressor) 19
2.2熱泵(Heat Pump) 21
2.2.1熱泵工作原理 21
2.2.2熱泵種類 22
2.2.3水源式取熱型熱泵 22
2.3熱泵效率標準 23
2.4熱泵性能回歸模型 26
2.4.1熱力學理論 26
2.4.2溫度依賴模型 31
2.4.3簡單模型 33
2.4.3年度能源使用情形 34
第三章 實驗流程與架構 35
3.1實驗架構 35
3.2實驗設備 36
3.3控制架構 42
第四章 結果與討論 44
4.1實驗程式介紹 45
4.2實驗結果 46
4.3實驗結果分析 52
4.3.1熱泵回歸模型與性能方程式 53
4.3.2冰水出水溫度重置之節能效益 55
4.3.3熱水出水溫度重置之節能效益 56
4.3.4壓縮機可變Vi之節能效益 57
第五章 結論 58
5.1研究結論 58
5.2後續研究建議 59
參考文獻 60
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論文全文使用權限:同意授權於2018-02-07起公開