HFO-1234yf 熱力循環系統模擬軟體開發 (I)

Abstract

R-1234yf 為兩家大型的化學公司霍尼維爾(Honeywell)和杜邦(Dupont)日前研發出一種 新型的冷媒，其全球暖化潛力值(GWP)僅為 4，對於環境暖化幾乎不會造成任何影響， 因此目前最被看好取代最廣泛使用的冷媒 R-134a，雖然如此，目前對此冷媒在冷凍空 調系統內的熱力循環資料甚為欠缺，僅有部分的熱傳性能數據；故若要進行使用 HFO-1234yf 相關冷凍空調系統設計，大多只能使用 Try and error 式的開發，此將造成 開發上的困擾且無法進行冷凍空調元件(冷凝器、蒸發器、膨脹裝置、壓縮機)的最佳化 設計與調整；因此本計畫預計針對此一冷媒開發一模擬 R-1234yf 熱力系統循環之模擬 軟體，此一軟體的開發將可提供相關工程師與設計者之重要參考，減少系統與元件開 發上的問題。

HFO-1234yf is regarded as the most potential substitute for R-134a for its GWP is as low as 4. It features promising features like non-toxic, unflammable and almost identical thermodynamic properties as R-134a. Currently, there are many on-going researches concerning the transfer performance of HFO-1234yf Refrigerants, especially for boiling and condensation two-phase flow characteristics. However, since its major objective is to act as a drop-in replacement for the R-134a refrigeration/air-conditioning system. Therefore, it is very crucial to have a system design software that is capable to predict the system behaviors R-1234yf system. It is therefore the purpose of this project to develop the associated software that is capable of simulating the system performance of HFO-1234yf refrigeration system subject to certain environment conditions. The projects aimed at developing the design program in two years.