x
uploads/suction gas.jpg

suction gas 煤氣。

suction head

Suction gas pressure goes up as the compressor run at the lower speed in the lower burthen , and this is beneficial to lower systems energy - consume . when the system is controlled by wvf , the discharge change of the evaporator is not linear ; the electronic expansion valve is adopted to regulate the system superheat degree , and the controlled object is parameter time varying , accordingly , the time varying controller should be adopted 在負荷較小時,壓縮機采用低速運轉,吸氣壓力升高,這對系統降低能耗是有利的;變頻控制時,蒸發器制冷劑流量的變化并非線性;系統中采用電子膨脹閥進行過熱度控制,被控對象具有參數時變的特性,相應地宜采用變結構的控制器。