The model includes sub models for key components, such as non economized compressor, economized compressor, economizer, expansion valve, shell and tube condenser, and flooded evaporator.

Example valves would include a shut-off valve for an economizer cycle, an unloader valve, or a suction modulation valve.

In front of the feed water regulator, split, economizer, superheater export, between superheater outlet and main steam valve, to heat the import and export, all should be installed pressure gauge.