Re: Evaporator and Condenser
Condenser.
Assume that at ambient 45C condensing temperature is 50C. R22 will condense at 50C. If bottom of condenser is full of liquid refrigerant, ambient air will cool it from 50C to 47C. 50-47=3C is subcooling. If bottom of condenser is not full of liquid refrigerant, refrigerant condensation will continue in this bottom part and no subcooling.
Accumulator separate liquid and vapour refrigerant. Sometimes vapour can carry liquid when significant change of refrigeration load or when compressor start up.
Re: Evaporator and Condenser
Condensers using ambient air can only hope to condense Vapour to liquid at ambient temperatures. 45 C Ambient...45 C liquid temperature in an ideal situation. Using a larger Condenser will not help because the longer tubing creates resistance and more work for the Compressor. More work = inefficiency.
Lower the liquid temperature by using some Condensed 45C liquid into a TX or Capillary to a heat exchanger? That will simply reduce the volume of liquid available to the TX valve. Gives the Compressor some additional cooling via the Suction gas and reduces discharge temperatures.
Double edged Sword.