臺灣博碩士論文加值系統

本研究主要目的為討論環保冷媒HFC-152a替代HFC-134a冷媒之效益分析。實驗是以市售HFC-134a蒸氣壓縮循環系統冰箱及除濕機，先行在原來未換裝系統HFC-134a下進行冷媒性能測試後再以HFC-152a冷媒進行性能測試，後續分別比較兩種冷媒系統間的性能差異分析。
實驗結果顯示在沒有改變系統元件及更換冷凍油情況下，將一個容量95L的家用冰箱以30克之HFC-152a取代其原有50克之HFC-134a冷媒時，整體上HFC-152a在家用冰箱實驗中的性能很接近R134a冷媒，性能表現上比原使用HFC-134冷媒之蒸氣壓縮循環系統性能表現更為優異，在平均耗功可降低約11%，冷媒充填量亦可大幅減少約40%，另將一個除溼能力6L的家用除溼機以100克之HFC-152a取代其原有125克之HFC-134a冷媒時，其整體系統性能參數表現為最佳狀況。其中冷媒充填量減少了約20%左右，除濕能力增加約7%，平均消耗電功率高約5 %，HFC-152a的確有能力來取代HFC-134a冷媒。

The main purpose of this study is to analyze and discuss the effectiveness of the green refrigerant HFC-152a as a replacement for the refrigerant HFC-134a. Two experiments were conducted, involving one refrigerator and one dehumidifier, respectively, both of which are commercially available and vapor compression cycle system based. In the experiments, these appliances were initially tested for refrigerant performance with their original HFC-134 refrigerant systems and then tested with the alternative refrigerant HFC-152a. Subsequently, analysis was performed to compare the differences in performance between the two types of refrigerant systems.
 
Experiment results show that in the experiment where 30g HFC-152a replaced the originally used 50g HFC-134a in one 95L household refrigerator without changing system components and replacing the refrigeration oil, HFC-152a exhibits overall performance close to that of the refrigerant R134a and superior performance with about 11% less in average power consumption and a significant decrease of about 40% in refrigerant filling amount relative to the refrigerant HFC-134 originally used in the vapor compression cycle system. In the other experiment where 100g HFC-152a replaced the originally used 125g HFC-134a in one household dehumidifier with 6L dehumidification capacity, the system exhibits optimal overall performance exhibits optimal performance across parameters with about 20% less in refrigerant filling amount, an increase of about 7% in dehumidification capacity and about 5% less in average power consumption. All of these results prove that HFC-152a is able to replace HFC-134a.

摘 要 i
ABSTRACT ii
誌　謝 iv
目 錄 v
圖 目 錄 viii
表 目 錄 x
第一章 緒論 1
1.1研究背景與動機 1
1.2 文獻回顧 7
1.3 研究特色 9
第二章 相關理論分析 11
2.1冷媒相關環境指標簡介 11
2.1.1臭氧破壞潛勢(ODP) 11
2.1.2全球暖化潛勢(GWP) 12
2.1.3等效暖化影響總當量（TEWI） 14
2.1.4生命週期氣候性能(LCCP) 15
2.1.5光化學臭氧生成潛勢(POCP) 16
2.2蒸汽壓縮循環系統 17
2.2.1理想蒸汽壓縮循環系統 18
2.2.2實際蒸汽壓縮循環系統 19
2.3蒸汽壓縮循環相關公式 20
2.3.1碳足跡的計算 21
2.4蒸汽壓縮循環元件 22
2.4.1壓縮機 22
2.4.2冷凝與蒸發器 22
2.4.3限流裝置 23
2.5氫氟碳化物(HFCs) 23
2.5.1 HFCs選用 23
2.5.2 HFC-152a冷媒特性 24
2.5.3冷媒安全性區分 24
第三章 實驗裝置架構與實驗步驟方法 27
3.1實驗設備及量測儀錶介紹 31
3.2系統冷媒填充最佳化 36
3.3系統冷媒能力量測 37
3.4實際設備運轉量測 39
第四章 結果與討論 41
4.1冷媒充填量對性能之比較 42
4.2電冰箱和除濕機汰換HFC-152a冷媒運轉試驗 47
4.3電冰箱和除濕機冷媒系統之碳足跡計算 49
4.4電冰箱和除濕機冷媒汰渙之成本計算 50
第五章 結論 51
5.1結論 ……………………………………………………………………..51
5.2後續研究之建議 52
參考文獻 53
附 錄 56
符號整理 60

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