Abstract: The present invention relates to a fuel cell system (100) comprising at least one fuel cell stack (1) having at least one cathode section (K) and at least one anode section (A), an air supply section (2) for supplying air (2) to the anode section (A) of the fuel cell stack (1), an exhaust air section (4) for discharging exhaust air (5) from the anode section (A) of the fuel cell stack (1), as well as a supply section (7) for supplying at least one main medium (6) to the cathode section (K) of the fuel cell stack (1), an exhaust gas discharge section (9) for discharging exhaust gas (8) from the cathode section (K) of the fuel cell stack (1), as well as a pump (12) for delivering the at least one main medium (6), the exhaust gas discharge section (9) being fluidically connected via a recirculation section (14) to the supply section (7) downstream of the pump (12) in order to recirculate exhaust gas (8), the recirculation section (14) being connected via a jet pump (16) to the supply section (7) in order to intr

Abstract: The present invention relates to an SOEC system (1), comprising a fuel cell stack (2) having a gas side (3) and an air side (4), and an ejector (5) for supplying a process fluid to a gas inlet (6) on the gas side (3), wherein the ejector (5) comprises a primary inlet (7), for introducing a water-containing primary process fluid through a primary line (8) of the SOEC system (1) into a primary portion (9) of the ejector (5), and a secondary inlet (10), for introducing recirculated secondary process fluid through a recirculation line (11) of the SOEC system (1) from a gas outlet (12) on the gas side (3) into a secondary portion (13) of the ejector (5), wherein the SOEC system (1) further comprises a control gas supply portion (14) for supplying control gas into the primary portion (9) and into the secondary portion (13) in order to control a pressure and/or mass flow in the primary portion (9) and in the secondary portion (13), and wherein the control gas supply portion (14) comprises a valve arrangement (19, 20

Abstract: The present invention relates to an SOEC system (1), comprising a fuel cell stack (2) having a gas side (3) and an air side (4), and an ejector (5) for supplying a process fluid to a gas inlet (6) on the gas side (3), wherein the ejector (5) comprises a primary inlet (7), for introducing a water-containing primary process fluid through a primary line (8) of the SOEC system (1) into a primary portion (9) of the ejector (5), and a secondary inlet (10), for introducing recirculated secondary process fluid through a recirculation line (11) of the SOEC system (1) from a gas outlet (12) on the gas side (3) into a secondary portion (13) of the ejector (5), wherein the SOEC system (1) further comprises a control gas supply portion (14) for supplying control gas into the primary portion (9) and into the secondary portion (13) in order to control a pressure and/or mass flow in the primary portion (9) and in the secondary portion (13), and wherein the control gas supply portion (14) comprises a valve arrangement (19, 20

Abstract: The present invention relates to a fuel cell system (100) comprising at least one fuel cell stack (1) having at least one cathode section (K) and at least one anode section (A), an air supply section (2) for supplying air (2) to the anode section (A) of the fuel cell stack (1), an exhaust air section (4) for discharging exhaust air (5) from the anode section (A) of the fuel cell stack (1), as well as a supply section (7) for supplying at least one main medium (6) to the cathode section (K) of the fuel cell stack (1), an exhaust gas discharge section (9) for discharging exhaust gas (8) from the cathode section (K) of the fuel cell stack (1), as well as a pump (12) for delivering the at least one main medium (6), the exhaust gas discharge section (9) being fluidically connected via a recirculation section (14) to the supply section (7) downstream of the pump (12) in order to recirculate exhaust gas (8), the recirculation section (14) being connected via a jet pump (16) to the supply section (7) in order to intr