Case study
Air-Conditioning system
To replace HFC refrigerant R134a with the natural refrigerant carbon dioxide.
Key information
Client:
Anonymous
Supplier:
compressor developed and manufactured by Bock Kältemaschinen GmbH
Type of facility:
single-stage, direct evaporation
System start-up:
1994
For some time now, carbon dioxide (R744) has been tested for use as a natural alternative refrigerant to counteract the problem of leakages in mobile air-conditioning systems used in cars and buses.
Requirement
To replace HFC refrigerant R134a with the natural refrigerant carbon dioxide
Solution
To develop a compressor for the transcritical carbon dioxide-process
Technical data
Cooling capacity:
30 kW
Main components:
2-cylinder piston compressor, HP: 90-140 bar, LP: at approx. -10 to +10 °C approx. 25-45 bar
Special features:
Joint project with the company Konvekta, still at the developmental stage.
