Importance

Loading Importance Indicators...

Abstract

An electricity production system comprising a fuel cell (1) with a plurality of individual cells each comprising an anode and a cathode on either side of a solid electrolyte having optimum operating characteristics in predetermined humidification conditions. The fuel cell has a fuel gas feed circuit (11) on the anode side, a feed circuit for a combustion-supporting gas on the cathode side and at least one recycling circuit (12+13) for one of the fuel or combustive gases which recycles the gas not consumed by the fuel cell. The recycling circuit comprises a dehumidifier (3) which enables the water contained in the unconsumed gas to be removed therefrom. The recycling circuit collects a moist gas downstream from the fuel cell, passing the moist gas to the dehumidifier and returning a dehumidified gas to the feed circuit (11) upstream from the fuel cell after the gas has passed through the dehumidifier. The recycling circuit comprises a direct circuit (15) installed in parallel with the dehumidifier which taps off some of the moist gas downstream from the fuel cell and passes the moist gas into the feed circuit (11) without passing through the dehumidifier (3). Measuring means control the proportion between the moist gas and the dehumidified gas returned upstream from the cell.

Loading the Abstract Image...

First Claim