• Under filling or over filling with refrigerant.
  • Cycle of thermodynamics in the p-h diagram.
  • Function and operational behaviour of the refrigeration circuit components.
  • Operation of an expansion valve or different length capillary tubes.
    *  Calculate the refrigeration capacity from the p-h diagram and in comparison with The measured values
    *  Calculate the coefficient of performance
    *  Calculate the efficiency of the compressor


  • Investigation of a refrigeration system with different expansion elements.
  • Refrigeration circuit consisting of a hermetic compressor, condenser, evaporator and expansion element.
  • Finned tube heat exchangers as condenser and evaporator to observe the phase transitions of the refrigerant (Sight Glass).
  • Expansion valve and capillary tubes of different lengths as expansion elements.
  • Receiver for under filling/overfilling the system with refrigerant.
  • Sensors record pressure and temperature. Compressor equipped with two pressure switches.
  • Software for data acquisition via USB under Windows XP or higher (Optional).
  • Refrigerant R134a,CFC-free

The refrigeration cycle demonstration unit consisting of a hermetic compressor, condenser, evaporator and expansion element. Finned tube heat exchangers were used in the design of the evaporator and condenser. As comparison of expansion elements, consider three capillary tubes of various lengths and a thermostatic expansion valve. A refrigerant receiver is included with the trainer. Refrigerant can be added to or taken out of the refrigeration circuit via the receiver. This makes it possible to study the impacts of overfilling or underfilling the system. A flow meter is used to measure the refrigerant’s flow rate. Sensors keep track of the temperature, pressure, and electrical usage of the compressor in the refrigeration circuit. Digital displays allow for the reading of the measured values. Additionally, using data capture software, the measured values can be sent straight to a PC via USB at the same time (optional). The p-h diagram in the software allows users to dynamically view parameter changes in the refrigeration circuit (optional).

Software IRC-1906SW (Optional)

DAQ software specially designed in National Instrument™, LABVIEW™ environment to measure and calculate the results of apparatus. The software is optional and while using software a set of electronic sensors are included. Software can be run with any Windows™ environment