Refrigeration and Air conditioning lab equipment

Computerized Recirculating Air Conditioning Trainer


DESCRIPTION: The “LabTek” This training unit allow students to investigate air conditioning at a basic level. Students can use P-H charts and psychometric charts for their calculations and discover the enthalpy change.

The unit features an air-cooled condenser unit connected to an evaporator located in an air duct. The air duct contains relative humidity and temperature sensors on both sides of the evaporator. A small fan provides airflow down the duct and can be manually adjusted.

The refrigeration circuit features high and low pressure gauges, a pressure switch, sight glass, filter dryer and TEV valve. The circuit also includes pressure transducers that connect to the instrumentation.

Sensors record the air temperature and air humidity before and after each stage as well as the pressures and temperatures of the refrigerant. The flow rate of the refrigerant is determined by means of the pressure measurement. The measured values can be read on digital displays. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included.

Computerized Recirculating Air Conditioning Trainer


  • Learn to use Psychometric charts
  • Determine enthalpy change in the airflow
  • Learn to use a Pressure-Enthalpy chart
  • Determine superheat and sub-cooling
  • Determine Coefficient of Performance (COP)
  • Determine isentropic and non-isentropic efficiencies of compression stage
  • Investigate the effect of air flow rate on COP


  • Steam humidifier

Power consumption: 4kW

Steam capacity: 5,5kg/h, switchable in three stages

  • Fan

Power consumption: 167W

Max. Volumetric flow rate: 1150m3/h

Speed: 1000…2600min-1

Pmax: 460Pa

  • Air preheater: 1kW, switchable in two stages
  • Air reheater: 2kW, switchable in two stages
  • Air duct, WxH: 300x350mm
  • Direct evaporator as air cooler: 6kW
  • Condensing unit

Power consumption: 968W at 5/25°C

Refrigeration capacity: 2,3kW at 5/25°C

  • Refrigerant: Refrigerant: R134a/22/etc

Filling volume: 3,3kg

CO2-equivalent: 2,1t

  • Measuring ranges

Differential pressure: 0…100Pa

Temperature: 5x 0…50°C, 4x -100…200°C

Humidity: 5x 10…90%

Pressure: -1…15bar, -1…24bar (refrigerant)

Flow rate: 8…102L/h (refrigerant)

  • Required for operation

230V, 50Hz, 1 phase
230V, 60Hz, 1 phase



  • L x W x H (approx.): 1600 x 800 x 1500 mm
  • Weight (approx.): 230 kg

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