Patent ID: 8313868

Claim:
A system, comprising: an oxygen enrichment device for generating oxygen-enriched air; and a fuel cell system with a fuel cell using the oxygen-enriched air as a reaction gas within the fuel cell; wherein the oxygen enrichment device is an on board oxygen generation system on board oxygen generation system which is supplied with air by a first air supply source, a second air supply source, and a third air supply source, and which, by increasing particle pressure of the oxygen in the air supplies the oxygen-enriched air to the fuel cell system; wherein the first air supply source supplies cooled bleed air from an engine of an aircraft to the on board oxygen generation system; wherein the second air supply source is an air conditioning system that supplies conditioned air to the on board oxygen generation system; wherein the third air supply source supplies outgoing air from a cabin to the on board oxygen generation system, the first, second, and third air supply sources in parallel arrangement and operable to supply air separately or in combination with each other.