Primary and secondary controllers
Through the use of primary and secondary controllers, the refrigerant pressure can be regulated at various points of a refrigerating plant in addition to the evaporating temperature and the refrigerant mass flow.
Capacity control in refrigeration systems
Investigation of different capacity control methods.
Pressure switches in refrigeration
Protection against overpressure and negative pressure in the refrigeration circuit; display of switching states via lamps.
Secondary controllers in refrigeration systems
Demonstration of the principle of operation of the various secondary controllers in the refrigeration circuit.