Resulting layout criteria

Experiences with the NH3 compact systems described above can be used in plant technology. However, the component layout has to be adjusted considering the higher mass flow. By appropriate selection of the evaporator and the expansion valve, a very stable superheat control must be ensured. Due to the improved oil solubility, “wet operation” can have considerable negative consequences compared to NH3 systems with non-soluble oil.

With regard to safety regulations, the same criteria apply to installation and operation as for NH3 plants.

Suitable compressors are special NH3 versions which possibly have to be adapted to the mass flow and the continuous oil circulation. An oil separator is usually not necessary with reciprocating compressors.