A fuel cell electric power generating system is provided which does not occupy a large space, which requires a lower initial cost for equipment than the prior art, and of which the running cost is low. The system includes a reformer 1 producing hydrogen-ri...

The fuel cell (100) is so constructed, that at least a fraction of one or more reaction product arising at one electrolyte unit (110B), is supplied to the other electrolyte unit (110S). An Independent claim is included for the corresponding method of opera...

The leak location method has the anode gas space of the fuel cells supplied with a fuel gas and the cathode gas space supplied with an oxidation gas, with interruption of the gas feed to one gas space and rinsing of the latter with an inert gas, the cell v...

A water tank 21 for stocking processed water used for cooling of a solid polymer type fuel cell 6, etc., cooling water supply means for supplying the processed water to the fuel cell 6, reactant air supplying means for supplying the reactant air to the fue...

Water recovery in direct liquid fuel cells, particularly direct methanol fuel cells, is accomplished by incorporating a wicking structure composed of a wicking material, which may be a composite material, adjacent to the cathode. The wicking material has a...

The present invention discloses an operation method for a polymer electrolyte fuel cell in an optimum operating condition by regulating the cell by a function represented by a gas flow rate and the difference between a saturated steam pressure and an actua...

When humidifying, almost to water vapor saturation, reformed gas that is supplied to a hydrogen electrode of a solid polymer type fuel cell (1) and air that is supplied to an oxygen electrode of the fuel cell (1), heating for obtaining water vapor to estab...

A fuel cell system calculates a water quantity Qw produced by a fuel cell (30) from an output current I of the fuel cell (30)(S102), and at the same time calculates saturated water vapor contents Qwa and Qwc in exhaust gases based on exhaust-gas flow rates...

The present invention provides a direct water injection type fuel cell apparatus which can effectively cool an air electrode in a fuel cell main body. The apparatus supplies water to the surface of the air electrode in a liquid state and the amount of proc...