Switzerland’s first hydrogen station for cars opens in Dubendorf
Empa has launched Switzerland’s first hydrogen station for passenger cars on its campus in Dübendorf. It is part of the mobility demonstrator “move” and used for various Empa project vehicles as well as for privately-owned hydrogen powered cars. The demonstrator “move” backed by the Federal Office of Energy (SFOE), Coop and various other industrial partners on the Empa campus has been in operation since November 2015. The station also offers pumps with CNG/biogas and a mixture of CNG and hydrogen (HCNG).
Until now, pure hydrogen had been available with a filling pressure of 350 bars, which is primarily suitable for refueling utility vehicles with large tanks. By installing the 700-bar pumps for hydrogen, Empa is now responding to the needs of fuel-cell cars: compact tanks, the longest possible range and rapid refueling. Hydrogen-powered cars can now be refueled in only two to three minutes and have a range of up to 600 kilometers on a full tank, which suddenly gives fuel-cell vehicles a competitive edge over conventional gasoline or diesel vehicles in terms of refueling comfort.
To make rapid refueling possible, the compressed hydrogen is pre-cooled to -40°C. This is necessary to prevent the temperature in the tank from rising too much due to the compression heat generated during the refueling process. The vehicle “communicates” with the pump nozzle via an intelligent infrared interface during refueling and provides data on the temperature and filling status, for instance. Empa’s new hydrogen station is closely linked to the first fully public hydrogen station in Hunzenschwil, which Coop Mineraloel AG is set to open in cooperation with H2 Energy AG in November.
Around 20% of all vehicles in Switzerland clock up more than 20,000 kilometers a year and are responsible for almost half of all the kilometers driven. In order to convert such vehicles from fossil to renewable energy, large ranges are therefore necessary. Hydrogen vehicles are suitable for long trips. Empa is studying various types of use for hydrogen at the recently expanded filling station: directly for machines, utility vehicles and passenger cars with fuel cells and as an admixture with natural gas/biogas for vehicles.