Simple Vapour Compression Refrigeration System:

It consists of the necessary parts which are described below:

Compressor

The low pressure & temperature vapour refrigerant by evaporator is drawn into the compressor by the inlet or suction valve A, where this is compressed to a high temperature and pressure. This high temperature & pressure vapour refrigerant is discharged into the condenser by the delivery or discharge valve B.

Condenser

The condenser or cooler contain coils of pipe in which the high temperature and pressure vapour refrigerant is cooled & condensed.

               Simple Vapour Compression Refrigeration System

The refrigerant, while passing via the condenser, gives up its latent heat to the nearby condensing medium that is generally air or water.

Receiver

The condensed liquid refrigerant through the condenser is hold up in a vessel called as receiver from where this is supplied to the evaporator by the expansion valve or refrigerant control valve.

Expansion Valve

This is also called up or refrigerant control valve or throttle valve. The task of the expansion valve is to permit the liquid refrigerant under high temperature and pressure to pass at a controlled rate after sinking its temperature and pressure. Some liquid refrigerant evaporates as it passes by the expansion valve, but the bigger portion is vaporized in the evaporator at the low temperature and pressure

Evaporator

An evaporator contains coils of pipe in which the liquid-vapour. Refrigerant at the low temperature & pressure is evaporated & changed into vapour refrigerant at low temperature and pressure. In evaporating process, the liquid vapour refrigerant absorbs its latent heat of vaporization from the medium (water , air or brine) that is to be cooled.