Air-conditioning system for buses
Planning / Implementation / Main components |
Partial project: compressor developed and manufactured by Bock Kältemaschinen GmbH |
Refrigerant |
CO2 |
System start-up |
Research project since 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. |
|
Demands |
To replace HFC refrigerant R134a with the natural refrigerant carbon dioxide |
Solution |
To develop a compressor for the transcritical carbon dioxide-process |
Technical data:
Type of facility (circuit) |
single-stage, direct evaporation |
Refrigerant |
CO2 (R744) |
Refrigerating capacity |
approx. 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 / Comments |
Joint project with the company Konvekta, still at the developmental stage. |
Contact:
Bock Kältemaschinen GmbH
Dr. H. Kaiser
Benzstrasse 7
D-72636 Frickenhausen
Germany
www.bock.de