Identifying faults in refrigeration systems requires exhaustive knowledge. This knowledge also includes the design and purpose of the individual components. ET 412C helps to acquire this knowledge. The components of a refrigeration circuit with refrigeration and freezing chambers are clearly arranged on the trainer. The solenoid valves allow individual or parallel operation of the evaporators in the two chambers. The circuit is equipped with a combined pressure switch for the inlet and outlet side of the compressor. The refrigeration chamber has an evaporation pressure controller. The effect of the evaporation pressure controller on the overall process is being examined. An internal heat exchanger at the inlet of the two evaporators is used to supercool the refrigerant to increase process efficiency. At the same time, the intake gas overheats.

Code: ET 412C