Effects of Refrigerant Charge on COP

Effects of Refrigerant Charge on COP Points : effects of refrigerant charge on cop The COP of the capillary tube system as a function of water temperature entering the condenser and refrigerant charge. As the water temperature entering the condenser increased, the COP was significantly dropped at all charge amounts due to a higher power consumption and lower cooling capacity. For the capillary tube system as the charge amount deviated from the full charge the reduction of COP was more significant at undercharged conditions than that at overcharged conditions. This trend was also reported by Farzard & O’Neal. The COP was reduced by 16.1% and 4.8% at 20% and +20% of full charge, respectively, at a water temperature of 3 4°C.