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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/82268


    Title: 應用低GWP環保冷媒HFO-1234yf小型冷凍系統開發研究計畫;Development of Small Refrigerator Using Low Gwp Refrigerant Hfo-1234yf
    Authors: 楊建裕;柯明村;李達生;李文興
    Contributors: 國立中央大學能源工程研究所
    Keywords: 冷媒HFO-1234yf;冷媒HFC-134a;冷凍空調系統;熱交換器;壓縮機控制系統;HFO-1234yf;HFC-134a;air condition and refrigeration;heat exchanger;compressor control unit
    Date: 2020-01-13
    Issue Date: 2020-01-13 14:34:50 (UTC+8)
    Publisher: 科技部
    Abstract: 由於降低全球暖化之要求,歐洲小型家用冰箱自2015年開始,所用冷媒GWP值即不能超過150,其他車用空調、商用冷凍庫等則分別自2020及2022開始,所用冷媒GWP值亦不能超過150。本計畫預訂針對最早受到GWP值限制之家用及商用冷凍庫為載體,進行以冷媒HFO-1234yf替換HFC-134a之研究,找出更換冷媒後可能遭遇之困難及解決方案,以協助國內相關業者適應世界趨勢,持續進入國際市場之可能性。由於前述冷媒替換問題是由兩種冷媒熱傳性能差異所產生,可以透過熱交換器重新設計,使其滿足熱傳量需求而解決,但此方法需要各型熱交換器確切熱傳性能,而且需要變更系統元件,對於既有系統較不易達成。另外此問題亦可藉由調整壓縮機/膨脹閥動力控制系統,適當變更蒸發/冷凝操作溫度而獲得改善。因此本計畫將針對各主要關鍵技術,進行深入分析探討,尋求各項解決方案,以為相關業者設計製造之依據。整體研究時程預定為三年,第一年先以在不變更主要元件情況下,同整各項動力控制參數,使系統得以正常運轉,同時進行相關熱交換器性能研究,以為後續改進所需。第二年將進行熱交換器更換,以及熱交換器更換後所需之系統調校。第三年則為各元件性能改良及系統運轉優化。本計畫為整體研究之第一年,預定分成(A)熱交換器熱傳特性研究、(B)系統控制動力基板開發、(C)系統特性模擬分析,以及(D)壓縮機、膨脹閥、熱交換器運轉整合等四部分。 ;Owing to the requirement of reducing global warming effect, the GWP potential of refrigerant used in refrigeration system will be limited by a value of lower than 150. This study will be focused on solving the problems those may be caused on the replacement of refrigerant HFC-134a to HFO-1234yf. To help the domestic industries to adapt on the refrigerant replacement and holding their global market share. The major problem caused by the refrigerant replacement is the heat transfer difference between these two refrigerants. This may be resolved by adjusting compressor/expansion valve control system and/or replace heat exchangers. This study will be focused on those key technologies above stated to find solution methods. The overall project is consistent of four work packages: (1) study of heat exchangers performance, (2) development of system control unit, (3) system numerical simulation and (4) integrated system performance test and improvements.
    Relation: 財團法人國家實驗研究院科技政策研究與資訊中心
    Appears in Collections:[能源工程研究所 ] 研究計畫

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