Patent ID: 7850838

Claim:
A hydrogen gas generation system comprising: an enclosure; at least one hydrogen generator mounted in said enclosure, said at least one hydrogen generator having a plurality of electrochemical cells coupled in a serial electrical arrangement, said electrochemical cells each having an anode and a cathode; at least one temperature sensor mounted within said enclosure; a first heat generation device mounted in said enclosure and operably coupled to said at least one temperature sensor; a ventilation duct coupled to said enclosure, said ventilation duct having an inlet and an outlet; and, a second heat generation device operably coupled to said ventilation duct to heat air in said ventilation duct prior to said air entering said enclosure; a third heat generation device operably coupled to said ventilation duct to heat air in said ventilation duct and arranged to heat said air in series with said second heat generation device prior to said air entering said enclosure; wherein said second heat generation device is configured to operate when an ambient temperature is below a first threshold and said at least one hydrogen generator is generating hydrogen gas; wherein said third heat generation device is configured to operate when said ambient temperature is below said first threshold and an enclosure temperature is below a second threshold and said at least one hydrogen generator is generating hydrogen gas.