The Effects of the Condenser Pressure Drop on the Cooling Performance of an Air Conditioning Unit using R-410A

The effect of pressure drop in the condenser of an air conditioning unit with R410 was simulated under constant swept volume of the compressor. Evaporating temperature and evaporating pressure increase as the pressure drop increases. It causes the decrease of refrigerant density, refrigerant mass flow rate, and refrigeration effect. The enthalpy difference across condenser and compressor, however, increase with the increasing pressure drop. This gives the reduction of evaporator capacity by 25% for pressure drop of 200 kPa. For the same range of pressure drop, the condenser capacity is reduced by 19%, COP is reduced by 27%, and the compressor capacity is almost constant.