As an operator of critical infrastructure and a land management organization, Deutsche Bahn is particularly affected by current and future consequences of climate change. Therefore, DB is preparing intensively for increasing extreme weather events and is strategically and operationally developing its climate resilience management.

To protect its customers and employees from the effects of climate change, DB tests new air conditioning systems in its trains. These systems use natural refrigerants, such as propane and carbon dioxide. Thanks to these new refrigerants, passengers remain comfortable even at very high outside temperatures. The air conditioning systems also relieve the atmosphere, as they consume less energy and are more climate-friendly than conventional systems.

Tested thoroughly

Before they went into operation, the new systems underwent extensive testing, with reliability and performance as the top priorities. The new refrigerants must meet all operational requirements and function reliably — even during extreme heat.

The result was positive: The first HVAC systems using the natural refrigerant propane are already in passenger service and have proven effective. They are used in new vehicles, such as the cars of the new ICE 3neo fleet.