Germany: air-cycle air conditioning systems for high-speed trains

Liebherr provided cold air systems based on an environmentally friendly technology.
Liebherr has provided eight air cycle air conditioning systems for Deutsche Bahn’s ICE 3.1 (Intercity-Express) high-speed trains. The cold-air systems are based on an environmentally friendly technology. The so-called process air is taken from the surroundings and expanded with an electrically powered cooling turbine.
The resulting reduction in pressure effects a simultaneous reduction in temperature. An air-air heat exchanger is used to draw energy from the inflowing air, which is then fed into the passenger compartment. In the next step, the process air in the open circuit of the cold-air system is re-compressed to ambient pressure and then released to the outside.
As cold-air systems only consist of a few components, they are not only of low weight, but also simple and inexpensive to service. In addition, according to Liebherr, the system is characterized by very low operating costs and low energy consumption.

For further information, please consult the article published on Liebherr website.