Split system air conditioners are used to cool, dehumidify and also heat rooms. The consist of an inner and outer unit.
In the inner unit there is a heat exchanger with fan working as an evaporator in the refrigeration circuit during cooling operation. During heating operation it works as a condenser. The outer unit contains a compressor, another heat exchanger, expansion element (e.g. capillary tube) and an element enabling the change-over from cooling to heating operation. In cooling operation the evaporating refrigerant in the heat exchanger of the inner unit withdraws heat from the room air. In the outer unit the heat in the heat exchanger is discharged to the ambient air by condensing the refrigerant. During heating operation the heat transport is reversed.
Learning objectives and experiments
- Design and operation of a split system air conditioner
- 6 operating modes
- Cooling
- Dehumidifying (slight cooling)
- Heating
- Ventilation (only the fan of the inner unit)
- Automatic (operating mode suitable for the room temperature)
- Test of cooling function
- 3 additional functions
- “sleep” (switch-off after several hours)
- “swing” (air outlet lamella position)
- Timer for switching on and off
- Remote control functions
Specification
- Trainer from the practical series for the training of mechatronics engineers for refrigeration
- Design and operation of a commercial split system air conditioner
- Iillustration of the split principle using a dividing wall
- 6 different operating modes: heating, cooling, dehumidifying, ventilation, automatic, test
- 3 additional functions configurable via remote control: sleep, swing, timer
- 2 refrigerant manometers indicate the low and high pressure of the compressor
- Battery operated remote control
Technical data
- Split system air conditioner
- Power consumption: approx. 1,2kw at 24/35°c
- Cooling capacity: approx. 3,5kw at 24/35°c
- Max. Volumetric air flow rate (inner unit): approx. 420m3/h
- Dehumidification (inner unit): approx. 0,8l/h
- Timer: 24h
- Refrigerant
- R32
- Gwp: 675
- Filling volume: 700g
- Co2-equivalent: 0,5t
- Measuring ranges
- Pressure: 2x -1…40bar
- 230v, 50hz, 1 phase
- 230v, 60hz, 1 phase; 120v, 60hz, 1 phase
