CO2 - eine interessante Alternative

The natural refrigerant CO 2 (R-744) has been introduced already in 1881 by Linde, it was used until the end of the thirties for shipcooling and air conditioning of buildings until it has been replaced by the (H)CFCs. The ban of the (H)CFCs has led to a revival of CO 2 , it is a safety refrigerant, and it is a natural fluid with no harmful effects on our environment. Additionally Gustav Lorentzen, Norway, has invented a new process, the Lorentzen process, which opens a new dimension for heat pumping technologies.