Refrigeration & Equipment Engineering

Unit 3 - Parts of refrigeration systems

3.3.1.Working of condenser
The compressor drawn in the superheated vapour refrigerant that contains the heat it absorbed in the evaporator and the compressor which adds more heat (i.e. the heat of compression) to the superheat vapour. This highly superheated vapour from the compressor is pumped to the condenser through the discharge line.
The condenser cools the refrigerant in the following three stages.

• First of all superheated vapour is cooled to saturation temperature to the pressure of the refrigerant
  

• Now the saturated vapour refrigerant gives up its latent heat and is condensed to a saturated liquid refrigerant. This process is called condensation.
• The temperature of the liquid refrigerant is reduced below its saturation temperature (i.e. sub cooled) in order to increase the refrigeration effect.