Conclusion
Absorption chillers and heat pumps- Ammonia-water systems.Theory

The NH₃ – H₂O binary mixture differs strongly from the H₂O-LiBr binary mixture, enabling cycles to be designed for different applications as there are no longer any limits towards low temperatures. This makes industrial refrigeration units accessible. In addition, the absence of crystallization enables operation with large temperature differences between condensation and evaporation, which is invaluable for air conditioning.

The fact that the refrigerant, in the case of NH₃ – H₂O, is an aqueous solution has important consequences that must be taken into account when designing the units. On the one hand, the evaporator produces a two-phase liquid-vapor mixture, and on the other, the desorber must be equipped with a rectifier.

The range of applications for 1-stage cycles is very wide, since such cycles enable refrigeration production...