Fuel cell system with a combined fuel evaporation and cathode gas heater unit, and its method of operation A fuel cell system, in which the cathode gas heater and the evaporator are combined in a single compact first heat exchange unit which includes a first housing inside which thermal energy is transferred from the first coolant to both the cathode gas and the fuel.

A system of utilizing carbon dioxide comprises a carbon dioxide capturing device for capturing carbon dioxide, an electrochemical reaction device for producing synthetic gas by reducing the carbon dioxide captured by the carbon dioxide capturing device, a hydrogen carrier manufacturing device for manufacturing a hydrogen carrier material by using the synthetic gas produced by the electrochemical reaction device, a dehydrogenation device for producing hydrogen from the hydrogen carrier material manufactured by the hydrogen carrier manufacturing device, and a hydrogen utilization device for utilizing hydrogen produced by the dehydrogenation device, wherein the dehydrogenation device further produces carbon dioxide from the hydrogen carrier material and supplies the carbon dioxide to the carbon dioxide capturing device.

A fuel cell device may include a fuel cell module; a condensate water recovery flow path which may recover water contained in an exhaust gas discharged from the fuel cell module as condensate water; a condensate water recovery device which may store the condensate water; and a reforming water supply flow path which may supply the condensate water to a reformer. The condensate water recovery device of the fuel cell device may include a first ion exchange container which may contain an ion exchange resin; and a first storage container which may store the condensate water. The first ion exchange container may be disposed inside the first storage container with a space from the first storage container, and may be attachable to and detachable from the first storage container.

A battery water pump control method, a battery controller and a battery. The battery comprises a battery controller and a battery water pump. The method comprises steps that when the battery water pump is in an open-loop control state, the battery controller obtains an open-loop expected control value of the battery water pump according to a first expected water flow of the battery water pump. The battery controller obtains a first control coefficient corresponding to the battery water pump according to the first expected water flow and the mapping relation between the expected water flow and the control coefficient, the battery controller determines an open-loop actual control value of the battery water pump according to the open-loop expected control value of the battery water pump and the first control coefficient, the battery controller controls the water flow of the battery water pump by utilizing the open-loop actual control value. When the battery controller controls the water flow of the battery water pump in the open-loop control mode, control precision can be improved.

A heater is described. The heater includes a fuel cell to produce heated air, electricity and water vapor. The heater further includes a heating element operatively coupled to the fuel cell to convert the electricity to heat and a control system operatively coupled to the fuel cell and the heating element, the control system being configured to monitor and control the fuel cell and heating element.

A fuel cell system, with an air flow system includes a first thermal zone, a second thermal zone, an air blower provided between the first and second thermal zones. The first thermal zone is connected to an inlet port of the fuel cell system. The second thermal zone is connected to an outlet port of the fuel cell system. The air blower is configured to draw in air from the first thermal zone and provide the air to the second thermal zone.

A method for storing and delivering hydrogen gas is described. The method includes reacting a chemical hydride with water in the presence of a synergist. The synergist advances the extent of reaction of the chemical hydride with water to increase the yield of hydrogen production. The synergist reacts with byproducts formed in the reaction of the chemical hydride with water that would otherwise inhibit progress of the reaction. As a result, a greater fraction of hydrogen available from a chemical hydride is released as hydrogen gas.

A method for storing and delivering hydrogen gas is described. The method includes reacting a chemical hydride with water in the presence of a synergist. The synergist advances the extent of reaction of the chemical hydride with water to increase the yield of hydrogen production. The synergist reacts with byproducts formed in the reaction of the chemical hydride with water that would otherwise inhibit progress of the reaction. As a result, a greater fraction of hydrogen available from a chemical hydride is released as hydrogen gas.

A biogas-utilizing methanation system includes: a solid oxide fuel cell using a to-be-treated gas as a fuel gas; a hydrogen production device capable of producing hydrogen by using power of a renewable energy power generation device; and a methanation device capable of methanating carbon dioxide in the system with the hydrogen produced by the hydrogen production device. The carbon dioxide in the system can be stored in a storage device on the basis of the supply amount of the to-be-treated gas or the power of the renewable energy power generation device.

A biogas-utilizing methanation system includes: a solid oxide fuel cell using a to-be-treated gas as a fuel gas; a hydrogen production device capable of producing hydrogen by using power of a renewable energy power generation device; and a methanation device capable of methanating carbon dioxide in the system with the hydrogen produced by the hydrogen production device. The carbon dioxide in the system can be stored in a storage device on the basis of the supply amount of the to-be-treated gas or the power of the renewable energy power generation device.