Abstract: A SOFC system (1) for generating electric power by combination of oxygen with a fuel gas stream (R), including a fuel cell (5) having a fuel gas inlet port (5d), an air stream inlet port (5f) and an exhaust gas stream outlet port (5g), and comprising a heat exchanger (3) with a fuel channel (3f), wherein said heat exchanger (3) comprises a first fluid path (3a) with an inlet port (3p) connected to an air supply and an air stream outlet port (3l) connected to the air stream inlet port (5f); and wherein said heat exchanger (3) comprises a second fluid path (3c) with an outlet port (3q) and an exhaust gas stream inlet port (3n) connected to the exhaust gas stream outlet port (5g); and wherein said fuel channel (3f) comprises a fuel supply and a fuel gas outlet port (3m) connected to the fuel gas inlet port (5d), and wherein said heat exchanger (3) is a unit separate from the fuel cell (5) and consisting of ceramics, and wherein said heat exchanger (3) comprising a base plate (3k) on which the fuel cell (5) being

Abstract: The fuel cell battery (1) has an integrated heat exchanger (4) which is arranged between a heat insulating jacket (12) and a stack (10) of high temperature fuel cells (2). There is a chamber (3), preferably at least two chambers for afterburning, between a periphery (14) of the cell stack and the heat exchanger. The heat exchanger is provided for a heat transfer from an exhaust gas (7) to a gaseous oxygen carrier (5). There are arranged on the stack periphery (14), outside or inside the chamber or chambers respectively, inlet points (25a) for the oxygen carrier, on the one hand, and outlet points (25b, 26b) for non-converted educts, namely a fuel gas (6) and the oxygen carrier, on the other hand. The heat exchanger (4) includes a passage system (4) through which the exhaust gas (7) and the oxygen carrier (5) flow largely in transverse planes disposed perpendicular to the axis of the cell stack (10) in one operating state of the battery.

Abstract: The fuel cell battery (1) has an integrated heat exchanger (4) which is arranged between a heat insulating jacket (12) and a stack (10) of high temperature fuel cells (2). There is a chamber (3), preferably at least two chambers, for afterburning, between a periphery (14) of the cell stack and the heat exchanger. The heat exchanger is provided for a heat transfer from an exhaust gas (7) to a gaseous oxygen carrier (5). There are arranged on the stack periphery (14), outside or inside the chamber or chambers respectively, inlet points (25a) for the oxygen carrier, on the one hand, and outlet points (25b, 26b) for non-converted educts, namely a fuel gas (6) and the oxygen carrier, on the other hand. The heat exchanger (4) includes a passage system (4) through which the exhaust gas (7) and the oxygen carrier (5) flow largely in transverse planes disposed perpendicular to the axis of the cell stack (10) in one operating state of the battery.