The absorption system has four main components: absovedor, generator, condenser and evaporator. As accessories has a pump and expansion valves. The refrigerant fluid NH3 enters the evaporator and removes heat from the internal environment through the liquid state to steam. This and absorbed by the absorber via a liquid NH3 + H2O. This solution is pumped to the generator. La an addition of heat separates NH3 (it moves to the condenser in the vapor form) of H2O returns to the absorber. NH3 releases heat to the outdoor condenser and passes to the liquid state enters the evaporator where the process restarts