July 20, 2006
NEWS RELEASE:

70Mpa/35MPa Mobile Hydrogen Station Development
Taiyo Nippon Sanso Corporation (TNSC) announced today thatit has recently developed a 70MPa/35MPa mobile hydrogenstation to supply fuel cell vehicles with 70MPa and 35MPahydrogen gas. This is the first mobile hydrogen station inJapan to be able to supply hydrogen compressed to 70MPa.
Details are as follows.
1. BackgroundToday, in the field of hydrogen energy and fuel cells, agreat deal of research and development work related totechnologies for hydrogen production, storage and use isbeing conducted by car manufacturers, universities andresearch organizations. Storage of hydrogen in the form ofcompressed gas is the most common hydrogen storage method
and is used in most hydrogen stations that supply fuel cellvehicles with hydrogen. This method is expected to become
more widespread in the future because it is more costeffective than employing liquid hydrogen or metal hydridefor fuel storage.
There is, however, a disadvantage in that, among thehydrogen stations currently in operation, the maximum
filling pressure for fuel cell vehicles is 35MPa, and thedistance a vehicle can travel on one fill is short comparedwith the distance a gasoline-fuelled vehicle can travel on
one tank of gas. In order to extend the distance a fuel cellvehicle can travel without changing the capacity of the fuel1

tank, it became necessary to fill the fuel cell car withhydrogen gas at a higher pressure. In Japan, under a New
Energy and Industrial Technology Development Organization(NEDO) project, equipment that could be used at 70MPa andabove is therefore being developed. Development work is also
being done in other parts of the world especially North
America and Europe.
2. Introducing the 70MPa/35MPa mobile hydrogen station
By making the hydrogen station mobile and also enabling not
only supply at 35MPa but also supply at 70MPa — a first forJapan — TNSC is making the supply of high pressure hydrogenmuch more widely available and meeting a diversity of needs.
The station facility and station base are outlined below.
(1) Station facility
The70MPa/35MPa mobile hydrogen station comprises acompressor, accumulator and dispenser and these are built
into a truck.
Compressor
The compressor capacity is about 30m3/hr and maximum
delivery pressure is 90MPa.
Accumulator
The accumulator has an accumulation capacity of 912m3 anduses a C-FRP* composite container to make the whole facility
more lightweight.
* Carbon Fiber Reinforced Plastic
70MPa and 35MPa dispenser
Has a Coliori flow meter and a flow adjustment valve andcontrols flow during filling2

As a result, when filling fuel cell vehicles, the station
could fill about eight 35MPa fuel cell cars consecutively or
it could fill one 35MPa fuel cell bus. In the case offilling at 70MPa it could fill one fuel cell car.
Station base
The base has a parking space for the 70MPa/35MPa mobilehydrogen station and a space for packed cylinder.
Place of installation: Mizue-cho, Kawasaki-ku, Kawasaki (inour Kawasaki Mizue office)3. Future plans
Taiyo Nippon Sanso has taken part in many related-activities
such as the development of basic technologies for hydrogenutilization including the Komatsu hydrogen station under theWE-NET Project (World Energy Network: International
cooperation in research and development of clean energy
system with particular emphasis on hydrogen), and theKasumigaseki hydrogen station, the Senju hydrogen stationand the Expo 2005 hydrogen stations under the JHFC Project(Japan Hydrogen and Fuel Cell Demonstration Project), andthe formulation of NEDO’s technical standards. This latest
facility is a second-generation station incorporating theseachievements. We will capitalize on the flexibility, safety
and originality of this station to make up for theweaknesses in the existing hydrogen infrastructure and tocontribute to various activities for a hydrogen energy
society, and we will also promote this technology
energetically to car manufacturers, universities, andresearch organizations involved in the field of hydrogenenergy and fuel cells to create demand, etc.

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