Patent ID: 6942940
Filing Date: 2005-09-13
Classification: H01M,Y02E

Abstract:
1. In a system for generating electricity comprising at least one internal manifold fuel cell stack comprising a plurality of fuel cell units, each said fuel cell unit comprising an anode electrode, a cathode electrode and an electrolyte disposed between said anode electrode and said cathode electrode, a separator plate disposed between said anode electrode of one said fuel cell unit and said cathode electrode of an adjacent said fuel cell unit, gas delivery means for providing fuel gas to said anode electrode and oxidant to said cathode electrode, gas removal means for removing anode exhaust gas and cathode exhaust gas from said fuel cell stack, and stack beat removal means for removing heat from said fuel cell stack, the improvement comprising: said stack heat removal means comprising at least one air preheat panel having two planar surfaces disposed proximate and substantially parallel to a stacking direction of said fuel cell stack and forming at least one air duct between said two parallel planar surfaces and extending parallel to said two planar surfaces having at least one cold air inlet and at least one preheated air outlet.