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Computerized Heat Pump Trainer

1 Control panel. 2 Measuring panel. 3 Process schematic. 4 Expansion devices 5 Flow meter. 6 Pressure switches. 7 Refrigerant collector. 8 Compressor. 9 Evaporator. 10 Condenser. 11 Refrigerant receiver. 12 Cooling/ Heating Chamber

  • Evaluating the refrigeration or heat pump cycle coefficient of operation using different expansion devices.
  • Plotting cooling/heating cycle with different exchangers on P-H curve.
  • Calculating coefficient of performance C.O.P when using the refrigerant receiver with different expansion devices.
  • Performing the following two experiments with the remaining 4 expansion devices.
  • Cooling using internally - equalized expansion valve and integrating the refrigerant receiver in the cycle.
  • Compressor
    • Voltage/Frequency: 208-220V ~ 50Hz
    • Refrigeration Capacity: 7116 btu/h
    • Ambient temperature: 32°C
    • Return gas: 15°C
    • Liquid temperature: 45°C
  • Measuring Ranges
    • Pressure: 0 ~ 35 bar.
    • Temperature: - 10º ~ 260ºC.
  • Solenoid Valve
    • Size: 3/8”.
    • Operating Range: - 40º ~ 105ºC.
  • Non Return Valve
    • Size: 3/8”.
  • Reversing Valve
    • Temperature Range: - 20º ~ 80ºC.
    • Max. Pressure: 33 bar.
    • Operating Differential Pressure: 2.99 bar (min.).
  • Computerized Heat Pump Trainer (AR - 008)
  • Hard copy user manual
  • Bedo software
  • Laboratory PC

Computerized Refrigeration/Heat Pump Trainer (AR-008) is designed to demonstrate the basic refrigeration cycle, the basic heat pump cycle and the change in the state of the refrigerant as it goes through a refrigeration or heat pump cycle, the unit is equipped with a touch screen computer integrated with an interactive software.

  • The trainer has a refrigeration/heat pump cycle which consists of a compressor, 1 condenser, receiver, 3 different expansion devices, 1 evaporator, refrigerant receiver, refrigerant collector.
  • The path to the desired expansion device is permitted using solenoid valves.
  • The reversing valve can be used to convert between refrigeration and heat pump cycle, and in doing so the evaporator becomes the condenser and condenser becomes the evaporator.
  • The refrigerant temperature and pressure are measured via sensors at different points throughout the cycle before and after the evaporator & before and after the condenser.
  • The refrigerant volume flow rate is measured before the receiver and before the expansion valve via flow meter sensor.
  • The measured temperatures are displayed on digital displays.
  • The unit can be controlled manually through switches on the control panel.
  • The control unit includes operation switches, control switches, digital displays and diagram for the cycle.
  • In manual operation the solenoid valves are operated from switches on the control panel and the measured parameters are only displayed on the digital displays, where the trainee is to manually record measured values and calculate the coefficient of performance.
  • Pressure gauges are used to display the measured pressures.
  • The unit is provided with USB port to be connected to a PC
  • The effect of parameter changes can be tracked in log p-h diagram at the software.