1、艾默生膨脹閥（R404A）特定條件下參數蒸發壓力（溫度）影響較明顯，但是是必須要保證的控制點。選取設計點及一個故障狀態（對應不達標蒸發溫度及 相應的需求冷量）冷凝壓力（溫度）在壓縮機允許范圍內變化時對系統冷量影響較小；但其過冷將大大影響其單位制冷量而影響整體 制冷量，結合現狀，固考慮過冷因素。最終既是保證好閥前后壓差以及單位質量制冷量。常用系列選型參數如下：R404AT系列指定工況下園的最大窗里將定工脫下閨的最大容量T系列T嘉列ext，equilizerR4O4Axt oquBlizerR4MATT-RO 515B©TURBOS1W 1THR-60SHR® S134 3TH

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