In this system, high-pressure ammon

In this system, high-pressure ammonia vapour, heated by the exhaust gases at the generator, enters the condenser where it transfers heat to the surroundings and becomes liquid. The liquid ammonia passes through an expansion valve and reaches the evaporator pressure. This low-pressure ammonia removes heat from the cold source (evaporator) and reaches the vapour state once again. In the absorber, a weak solution of ammonia and water absorbs the refrigerant, transferring heat to the vicinity. The resulting ammonia-rich solution is then pumped to the generator where it is once again heated and the cycle restarts.