The invention provides a water tank heating method and unit, an electronic device and a solid oxide fuel cell (SOFC) system. Before the SOFC system is started, ice in a water tank has been heated up, so after the SOFC system is started, the heating time of the heated ice, i.e., the thawing time of the water tank, will be shortened. Further, in the ice heating process, a pre-set needed SOFC thawing time determined according to current stack outlet temperature is used as a heating control parameter. As the stack outlet temperature is a key factor influencing the starting time of the SOFC system, the heating control will be more accurate if the pre-set needed SOFC thawing time corresponding to the stack outlet temperature is used as a heating control parameter.

The invention provides a water tank heating method and unit, an electronic device and a solid oxide fuel cell (SOFC) system. Before the SOFC system is started, ice in a water tank has been heated up, so after the SOFC system is started, the heating time of the heated ice, i.e., the thawing time of the water tank, will be shortened. Further, in the ice heating process, a pre-set needed SOFC thawing time determined according to current stack outlet temperature is used as a heating control parameter. As the stack outlet temperature is a key factor influencing the starting time of the SOFC system, the heating control will be more accurate if the pre-set needed SOFC thawing time corresponding to the stack outlet temperature is used as a heating control parameter.

A connection block including connections, which are connected to one another by connection channels. The connection block includes at least two fluid paths, which extend independently from one another through the connection block, which are each provided with a branching, and which each comprise a fluid inlet connection, a first fluid outlet connection and a second fluid outlet connection. For or each fluid path, at least one temperature sensor for measuring a temperature in the fluid path and/or at least one pressure sensor for measuring a pressure in the fluid path are provided.

Systems and methods configured to receive a set of real-time flight conditions and a user-selected objective function. The user-selected objective function is one of a plurality of objective functions. The systems and methods determine, with an emissions tuning model, one of a plurality of sets of fuel cell operating conditions based on the set of real-time flight conditions and the user-selected objective function. The systems and methods are configured to control a fuel cell assembly operating parameter according to the determined one of the plurality of sets of fuel cell operating conditions.

System, methods, and other embodiments described herein relate to safely ceasing fuel cell (FC) operation and idling components of a generator. In one embodiment, a method includes ceasing power generation by reducing fuel to an FC within a generator while maintaining energy to sensitive components by a battery. The method also includes idling a direct current (DC) converter and a load inverter associated with the power generation before idling the battery. The method also includes, upon successfully completing tests and powering down non-critical components of the generator, entering the generator into a standby status.

A gas turbine engine includes a fuel cell assembly including a fuel cell stack and defining a fuel cell assembly operating parameter, a fuel source, and a turbomachine. The turbomachine includes a compressor section, a combustor, and a turbine section arranged in serial flow order. The combustor is configured to receive a flow of fuel from the fuel source and further configured to receive output products from the fuel cell stack. A controller is configured to perform operations including receiving data indicative of system operation conditions, determining a set of fuel cell operating conditions to move the system emission output into or maintain the system emission output within an emissions range, and controlling the fuel cell assembly operating parameter according to the determined set of fuel cell operating conditions.

To provide a fuel-efficient fuel cell system configured to eliminate flooding in a fuel-based gas flow path, etc. The fuel cell system is a fuel cell system comprising a first fuel cell stack, a second fuel cell stack, a fuel gas supplier, a first supply flow path, a first circulation flow path, a second supply flow path, a second circulation flow path, a first bypass flow path which includes a first on-off valve, a second bypass flow path which includes a second on-off valve, a temperature detector, a current detector, a voltage detector and a controller.

To provide a fuel-efficient fuel cell system configured to eliminate flooding in a fuel-based gas flow path, etc. The fuel cell system is a fuel cell system comprising a first fuel cell stack, a second fuel cell stack, a fuel gas supplier, a first supply flow path, a first circulation flow path, a second supply flow path, a second circulation flow path, a first bypass flow path which includes a first on-off valve, a second bypass flow path which includes a second on-off valve, a temperature detector, a current detector, a voltage detector and a controller.

A method for treating hydrogen-containing and oxygen-containing residual gases of fuel cells, wherein the residual gases are fed to a gas circuit, and a residual gas mixture resulting therefrom is circulated in the gas circuit by a device for converting hydrogen and oxygen to water. In order to reduce the amount of hydrogen and oxygen in the residual gas mixture, at least part of the residual gas mixture is discharged from the gas circuit.

A fuel cell system is provided and the fuel cell system includes: a fuel cell; a fuel processing unit configured to process a raw fuel to produce a fuel gas for the fuel cell; an oxidant gas heating unit configured to heat an oxidant gas for the fuel cell; a combustor configured to combust the raw fuel to produce a combustion gas for use in heating the fuel processing unit and the oxidant gas heating unit; a supply control unit configured to, during a warm-up of the fuel cell, control supply of the raw fuel to the fuel processing unit and the combustor; and a power generation control unit configured to control a power generation state during the warm-up of the fuel cell. When the fuel cell has reached a power generation available temperature, the power generation control unit is configured to cause the fuel cell to perform power generation, and the supply control unit is configured to supply the raw fuel to both the fuel processing unit and the combustor.