Air & Water Heat Pump Training System
(AR - 006)

1 Compressor. 2 Condenser. 3 Receiver. 4 Filter/drier. 5 Side glass. 6 Refrigerant flow sensor. 7 Expansion device. 8 Evaporator. 9 Condenser outlet temperature sensor. 10 Flow sensor. 11 Condenser inlet temperature sensor. 12 Digital displays 13 Operation panel. 14 Pressure switches and pressure gauges. 15 CPU. 16 PC screen 17 Cooling water tank.

  • 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.
    • Cooling using internally - equalized expansion valve and not integrating the refrigerant receiver into the cycle.
  • Max. flow rate: 4m3/h Pump
    • Head max: 6m
    • Maximum operating pressure: 10 bar
    • Pumped liquid: Water
    • Liquid temperature range: 2-110 c
    • Main frequency: 50 Hz
    • Rated voltage: 1 x 230 V
  • Condenser
    • Water flow capacity: 0.30 m3/h
    • Capacity: 1.8 kW
  • Evaporator Fan
    • Power supply: 230V.
    • Frequency: 50 ~ 60Hz.
    • Current: 0.18A.
    • Power: 90W.
    • Speed: 1100rpm.
  • Compressor
    • Type: Reciprocating
    • Voltage/Frequency: 208-220V ~ 50Hz
    • Refrigeration Capacity: 1501W
    • Ambient temperature: 32°C
    • Return gas: 15°C
    • Liquid temperature: 45°C
  • Air & Water Heat Pump Training System (AR - 006)
  • Hard copy user manual
  • Laboratory PC

The training system demonstrates the principle of operation of one of the most efficient types of heat pump which is (air to water) heat pump. Air to water heat pump uses the ambient heat of the air to heat water. the training system is provided with the main components of typical refrigeration cycle namely compressor, a condenser, a receiver, a filter/drier, a side glass, a refrigerant flow meter, an expansion device, and an evaporator. The training system is provided with a software to display the cycle graphs and process parameters.

                                     
  • The educational unit represents R404a refrigerant cycle that is cooled by a water cycle.
  • The cooling water is a radiator coolant used to cool the refrigerant cycle.
  • The trainer contains three cycles, refrigerant cycle, the cooling water cycle, and the tap water cycle
  • the main objective of the tap water cycle is to cool down the temperature of the water in the cooling water cycle which in turn serve for the refrigeration cycle.
  • The refrigerant cycle contains a compressor, a condenser, a receiver, a filter/drier, a side glass, a refrigerant flow meter, an expansion device, and an evaporator.
  • The side glass is used to assure that the refrigerant doesn't contain air bubbles.
  • The cooling water cycle contains the cooling water tank, a pump, a flow rate sensor, the condenser.
  • The condenser is a tubular one, the inner tube is for the refrigerant and the outer one is for the cooling water.
  • The tap water is provided from an external water source in the lab (tap water).
  • The trainer side is supplied with two nozzles as inlet and outlet of the tap water. The two nozzles are connected to a hollow coil in the cooling water tank to provide cold tap water inside the tank to cool the cooling water.
  • The trainer contains ON/OFF switch of the trainer and emergency switch.
  • The trainer is supplied with temperature sensors, pressure switches, indicator LEDs and digital displays to display the process parameters.
  • The trainer is supplied with a schematic diagram that shows the three cycles.