Abstract: The invention relates to a functional installation which consumes electrical power and which uses a fuel cell. The inventive installation includes: an electrical power consuming member; a fuel cell which is connected to the consuming member in order to supply same with electrical power, said fuel cell being of the type that uses gas fuel, particularly gaseous hydrogen; and a first reserve of gas fuel which is stored under pressure and which is intended to supply the cell by default. The invention is characterized in that the installation also includes: a second reserve of gas fuel which is stored under pressure and which is intended for the cell; means for selectively distributing fuel to the cell from the first or second reserve, whereby said distribution means can detect a supply fault or an insufficient supply from the first reserve; and means for automatically switching to the second reserve for fuel distribution in the event of an insufficient or faulty supply from the first reserve.

Abstract: The invention relates to an installation for producing oxygen of high purity, which is advantageously installed in a transportable container (21), comprising: an upstream pressure-swing-adsorption (PSA) device (A1) containing a zeolite sieve; a downstream PSA device (A2) containing a carbonaceous sieve; in a loop between the two devices, a permeation device (P) capable of separating oxygen form argon; and a medium-pressure oxygen compressor (20). The invention is used for producing oxygen of high purity on-site, typically in isolated locations.

Abstract: A fuel cell pack and a power producing device based upon a fuel cell. The fuel cell is made up of a series of elementary cells and a fluid distribution system which makes it possible to feed each cell with two different fluids and to remove the fluids from the cells. The fuel cell pack is provided with a first valve system which interacts with a second valve system present in the power producing device.