The condenser is of water cooled type.Ģ) Expansion valve or restriction: When the refrigerant passes through the expansion valve, its pressure and temperature reduces suddenly. Absorption Refrigeration System Simple Absorption System and How it Works?ġ) Condenser: Just like in the traditional condenser of the vapor compression cycle, the refrigerant enters the condenser at high pressure and temperature and gets condensed. though these sources are used only in the small systems. The heat can also be created by other sources like natural gas, kerosene, heater etc. This heat can be from the excess steam from the process or the hot water. In the vapor absorption system the energy input is given in the form of the heat. In the vapor compression system the energy input is given in the form of the mechanical work from the electric motor run by the electricity.

The absorbent enables the flow of the refrigerant from the absorber to the generator by absorbing it.Īnother major difference between the vapor compression and vapor absorption cycle is the method in which the energy input is given to the system. Thus the absorber and the generator replace the compressor in the vapor absorption cycle. In the vapor absorption cycle, the process of suction and compression are carried out by two different devices called as the absorber and the generator. The compressor also enables the flow of the refrigerant through the whole refrigeration cycle. In the vapor compression system, the compressor sucks the refrigerant from evaporator and compresses it to the high pressure. The major difference between the two systems is the method of the suction and compression of the refrigerant in the refrigeration cycle. The refrigerant produces cooling effect in the evaporator and releases the heat to the atmosphere via the condenser.

The refrigerant gets condensed in the condenser and it gets evaporated in the evaporator. In the vapor absorption system the refrigerant used is ammonia, water or lithium bromide. The vapor absorption refrigeration system comprises of all the processes in the vapor compression refrigeration system like compression, condensation, expansion and evaporation. Types of Refrigeration: Gas Cycle Refrigeration

Vapour absorption refrigeration system