Effect of Overcharge and Undercharge of Refrigerant on System

Effect of Overcharge and Undercharge of Refrigerant on System Points : effect of overcharge and undercharge of refrigerant on system For overcharged conditions, power consumption of the heat pump increased due to a rise of refrigerant flow rate and compression ratio, or wet compression. For undercharged conditions, refrigerating capacity was reduced and compressor reliabilities may be degraded due to high discharge temperatures. Therefore, it is essential to have the optimum amount of charge in the heat pump to ensure high performance operation and achieve high system reliability. In the present study, to refrigerant charge varied to determine its effect on the performance of the heat pump. For each charge, experimental data were taken by varying operating conditions and expansion devices including the capillary tube and EEV.