SAG – Cryo Tank Systems

Truck cryo tank system for liquid hydrogen developed by Austrian company “Salzburger Aluminium Group” went into intensive test phase at mayor OEM


Copyright: Daimler Truck

New milestone "made in Austria" towards Green Mobility: The first LH2 cryo tank system for liquid hydrogen developed by Salzburg Aluminium Group in cooperation with Daimler Truck is undergoing intensive testing in the prototype of fuel cell-powered Mercedes-Benz GenH2 truck.

The R&D partnership in the field of cryo-tank systems for liquid hydrogen-powered trucks between Daimler Truck and the Salzburg-based Aluminum Group is entering the next phase. The first LH2 storage system for fuel cell trucks developed by Austrian engineers is undergoing intensive testing on the Daimler Truck test track. Advantages of the SAG system: compact design, large filling volume, technical reliability and long range.

There is no longer any doubt that green hydrogen will be a key to CO2-neutral mobility in the future. Especially in liquid form, hydrogen (LH2) is a very efficient energy carrier with a high energy density. This makes it possible to fill up more tanks and thus increase the range of vehicles.

Johannes Winklhofer, Head of R&D at SAG about the advantages of the inhouse developed cryo tank system for LH2: "Only with liquid hydrogen can we achieve a similar performance as with conventional diesel trucks, namely 1,000 kilometers and more. This is the only way to ensure practical suitability, especially in heavy long-distance transport. Our cooperation with Daimler is running very successfully and we are already very excited about the results of the operations on the Daimler Truck test track."

The space optimized LH2 tank system developed by SAG enables a high transport volume. The double-walled, vacuum-insulated stainless steel tank ensures that the temperature of the hydrogen remains constantly low at minus 253 degrees Celsius. A special valve system designed for this extremely low temperature ensures a reliable supply of hydrogen to the fuel cell.

Karin Exner-Wöhrer, CEO of the Salzburg Aluminium Group, on the development partnership with Daimler Truck: "We have been developing cryogenic tanks for LNG for more than ten years and thus we have been able to design and prototype a complete tank system for LH2 in a comparatively short time as a development partner for Daimler Truck. We are convinced that liquid hydrogen is a game changer in climate-neutral mobility, and we are very pleased that the practical tests are going very well. We are taking a big step forward in CO2 reduction in transport with this development."

More range with liquid hydrogen

Hydrogen - when produced via electrolysis using green electricity - is a CO2-neutral alternative to diesel fuel. When hydrogen and oxygen are converted into electrical energy by means of a fuel cell, only water and heat are produced as "by-products". Since only a relatively short range can be achieved in HGV traffic with compressed gaseous hydrogen, more and more OEMs are relying on liquid hydrogen, so that the cryo-tank system developed by SAG represents a real innovation "made in Austria" for the world market.

Source: Salzburger Aluminium Group