Patent ID: 7399544

Claim:
An electricity-generating installation on board a motor vehicle, comprising: a fuel-cell stack provided with at least one orifice for evacuation of residual gases, which are composed mainly of air and water vapor and which are discharged into an evacuation conduit in which there is disposed a condenser that liquefies the water vapor; a compressor interposed directly upstream from the condenser such that the residual gases are transferred from the compressor to the condenser; and a turbine interposed in the evacuation conduit downstream from the condenser and which drives the compressor, wherein the liquid water is diverted from the evacuation conduit to a liquid water circuit, the compressor compresses the residual gases such that a dew point temperature of the water vapor is higher than a temperature of the condenser, and the turbine is interposed in the evacuation conduit directly downstream from the condenser such that the residual gases are transferred from the condenser to the turbine.