Capacity control and faults in refrigeration systems

The efficient control of the capacity and temperature in refrigeration systems is an important topic in refrigeration technology. With this system different methods of capacity control can be investigated.

• investigation of a refrigeration system with refrigeration and freezing chambers
• refrigeration circuit with compressor, condenser, capacity controller, start-up controller, combined pressure switch and 2 evaporators in insulated chambers
• each chamber with solenoid valve, thermostat, thermostatic expansion valve, fan and heat exchanger for refrigerant supercooling
• refrigeration chamber with evaporation pressure controller
• freezing chamber with electric defrost heater and hot gas defrosting
• separate or parallel operation of the chambers via solenoid valves
• simulation of 12 faults
• touch panel PC for fault activation, data acquisition, evaluation and representation in the log p-h diagram
• refrigerant R449A, GWP: 1397