Abstract: A food processing apparatus includes a reaction vessel that has a tubular shape with a bottom and contains a reactant that is liquid and to be used for food, a reactor (for example, a reaction pipe) that is disposed in the reaction vessel and provided with a photocatalyst, a light source that irradiates the photocatalyst with light, a cooler that cools the reactant in the reaction vessel, a lid that closes an opening of the reaction vessel, and a gas supplier (for example, a gas container) that supplies an oxygen-containing gas into the reaction vessel via a first through-hole formed in the lid or in a part of a side wall portion of the reaction vessel in a vicinity of the lid. An inside of the reaction vessel is controllably gastight.

Abstract: A food processing apparatus in the present disclosure includes a reaction tank, a stirring body, and catalyst-attached members. The reaction tank stores a liquid reactant for food. The stirring body stirs the reactant stored in the reaction tank by rotating. The catalyst-attached members each have an outer surface at which a photocatalyst is present. The food processing apparatus satisfies the following condition (I), the following condition (II), or the following conditions (I) and (II). (I) A diameter of a circle that is a track formed by an outermost end of the stirring body in a direction perpendicular to a rotation axis when the stirring body rotates is greater than or equal to a maximum dimension. (II) The stirring body pushes the reactant toward a bottom of the reaction tank in a direction parallel to the rotation axis Ax when the stirring body rotates.

Abstract: An electrochemical hydrogen pump includes at least one hydrogen pump unit including an electrolyte membrane, an anode on one main surface of the electrolyte membrane, a cathode on the other main surface of the electrolyte membrane, an anode separator on the anode, and a cathode separator on the cathode, the at least one hydrogen pump unit transferring, to the cathode, hydrogen supplied to the anode and pressurizing the hydrogen, a first fixing member for preventing movement of the cathode separator in a direction in which the cathode separator is stacked, a first end plate on the anode separator at one end in the stacking direction, a second end plate on the cathode separator at the other end in the stacking direction, and a first gas flow channel through which hydrogen in the cathode is supplied to a first space between the second end plate and the cathode separator.

Abstract: An electrochemical hydrogen pump includes at least one hydrogen pump unit including an electrolyte membrane, an anode on one main surface of the electrolyte membrane, a cathode on the other main surface of the electrolyte membrane, an anode separator on the anode, and a cathode separator on the cathode, the at least one hydrogen pump unit transferring, to the cathode, hydrogen supplied to the anode and pressurizing the hydrogen, a first fixing member for preventing movement of the cathode separator in a direction in which the cathode separator is stacked, a first end plate on the anode separator at one end in the stacking direction, a second end plate on the cathode separator at the other end in the stacking direction, and a first gas flow channel through which hydrogen in the cathode is supplied to a first space between the second end plate and the cathode separator.

Abstract: A method for operating a food processing apparatus is provided. The food processing apparatus includes a reaction vessel that has a space that accumulates a liquid reactant used for a food product; a catalytic reactor that includes a reaction tube and a light source; and an introducing tube for introducing the reactant into the reaction vessel. The reaction tube has an outer surface where a photocatalyst is provided. The reaction tube transmits light. The light source generates heat at a time of light emission in which the light source emits light from an inner side of the reaction tube. The method for operating the food processing apparatus includes introducing the reactant into the reaction vessel from the introducing tube. In the introducing, the reactant is introduced up to a position at which a liquid surface of the reactant is positioned higher than an opening portion of the introducing tube.

Abstract: A hydrogen supply apparatus includes: an air path having an inlet and an outlet; a fan that is disposed in the air path and produces a flow of air from the inlet to the outlet; a first pipe having an end that forms a first supply port through which to supply hydrogen gas to the air path; a flow control device that is attached to the first pipe and adjusts a flow rate of the hydrogen gas; and a hydrogen gas sensor, disposed downstream of the fan or the end in a direction of flow of the air that detects a concentration of the hydrogen gas in the air path, where the end is disposed between the fan and the outlet or between the fan and the inlet in the air path.

Abstract: A food processing apparatus includes a reaction tank having an internal space for storing a reactant that is in a liquid state and that is used for food, a cooler that cools a reactant stored in the reaction tank, and a catalytic reactor disposed in the internal space. The catalytic reactor includes a reaction tube, a light source disposed in the interior of the reaction tube, and a heat insulator disposed between the reaction tube and the light source. The outer surface of the reaction tube is provided with a photocatalyst. The reaction tube allows light radiated from the light source to pass therethrough. The reaction tube has a first end, and the first end is closed so as to serve as a bottom surface of the reaction tube. The interior of the reaction tube is filled with a dry gas.

Abstract: A food processing apparatus includes a reaction tank having an internal space for storing a reactant that is in a liquid state and that is used for food, a cooler that cools a reactant stored in the reaction tank, and a catalytic reactor disposed in the internal space. The catalytic reactor includes a reaction tube, a light source disposed in the interior of the reaction tube, and a heat insulator disposed between the reaction tube and the light source. The outer surface of the reaction tube is provided with a photocatalyst. The reaction tube allows light radiated from the light source to pass therethrough. The reaction tube has a first end, and the first end is closed so as to serve as a bottom surface of the reaction tube. The thermal conductivity of the heat insulator is lower than the thermal conductivity of the reaction tube.

Abstract: A method for operating a food processing device includes an irradiation step. The food processing device includes a reaction vessel and a catalyst reactor. The reaction vessel receives a mixture in a liquid form including a raw material for a food product and water. The catalyst reactor is disposed in the reaction vessel. The catalyst reactor includes a reaction tube and a light source disposed in the reaction tube. The reaction tube has an outer surface on which a photocatalyst is provided, and transmits light emitted from the light source. The method for operating the food processing device includes the irradiation step of performing irradiation with light from the light source while water is in contact with the outer surface of the reaction tube in a period after a reaction product is removed from the reaction vessel and before a raw material is subsequently introduced into the reaction vessel.

Abstract: A food processing device includes a reaction vessel, a stirrer including a stirring body, and catalyst reactors. Each catalyst reactor includes a reaction tube and a light source. The reaction tube has an outer surface on which a photocatalyst is provided, and transmits light. The catalyst reactors are arranged around a rotating shaft. The light source includes light emitters disposed at different positions. When viewed in an axial direction of the rotating shaft, the catalyst reactors have equal phases. The phase of each catalyst reactor is a phase of a reference direction of the reaction tube of the catalyst reactor with respect to a straight line connecting centers of the rotating shaft and the reaction tube. The reference direction of the reaction tube is a direction determined on the basis of a direction in which light is emitted from the light emitters and a positional relationship between the light emitters.

Abstract: A food processing apparatus includes a reaction tank having a first space for storing a liquid reactant to be used for a food; a stirrer including a first stirring body that stirs the reactant in the reaction tank by rotating; catalytic reactors, the catalytic reactors each including a reaction tube and a light source disposed in the reaction tube, the reaction tube having an outer surface provided with a photocatalyst, the reaction tube allowing light emitted from the light source to pass therethrough; and a temperature adjuster that adjusts the temperature of the reactant in the reaction tank. The catalytic reactors are disposed around a first rotary shaft of the first stirring body to be spaced from each other. The temperature adjuster surrounds the catalytic reactors.

Abstract: An electrochemical hydrogen pump includes at least one hydrogen pump unit including an electrolyte membrane, an anode, a cathode, an anode separator, and a cathode separator; an anode end plate disposed on the anode separator positioned in a first end in a stacking direction; a cathode end plate disposed on the cathode separator positioned in a second end in the stacking direction; a fixing member that prevents members from the anode end plate to the anode separator positioned in the first end from moving in the stacking direction; a gas flow channel through which hydrogen generated in the cathode is supplied to a space disposed between the anode end plate and the anode separator positioned in the first end; and a pressure transmitting member that is disposed in the space and transmits a pressure from the anode separator positioned in the first end to the anode end plate.

Abstract: A hydrogen-containing gas supply system includes one or more hydrogen-containing gas suppliers, one or more acquirers, and a controller. The one or more hydrogen-containing gas suppliers supply a hydrogen-containing gas to one or more areas in a building. The one or more acquirers acquire information indicating that a person is present in the one or more areas. When it is determined that a person is present in a certain area of the one or more areas in accordance with the information acquired by the acquirers, the controller causes at least one of the one or more hydrogen-containing gas suppliers to supply the hydrogen-containing gas to the certain area.

Abstract: An electrochemical hydrogen compressor includes: a cell including a proton conductive electrolyte membrane having a pair of principal surfaces, a cathode disposed on a first one of the principal surfaces of the electrolyte membrane, and an anode disposed on a second one of the principal surfaces of the electrolyte membrane; a voltage applicator that applies a voltage between the anode and the cathode; a dew point adjuster that adjusts a dew point of a hydrogen-containing gas to be supplied to the anode; and a controller that, when the temperature of the cell increases, controls the dew point adjuster to increase the dew point of the hydrogen-containing gas.

Abstract: An electrochemical hydrogen pump includes an electrolyte membrane, an anode catalyst layer, a cathode catalyst layer, an anode gas diffusion layer, a cathode gas diffusion layer, an anode separator, a cathode separator, a first end plate and a second end plate that are disposed on the respective ends of at least one hydrogen pump unit in which the electrolyte membrane, the catalyst layers, the gas diffusion layers, and the separators are stacked on each other, a fastener that fastens the end plates and at least one hydrogen pump unit, and a voltage applier. The electrochemical hydrogen pump transfers hydrogen from the anode catalyst layer to the cathode catalyst layer and pressurizes hydrogen when the voltage applier applies the voltage. The cathode gas diffusion layer includes a water-repellent carbon fiber layer in a main surface thereof that is on a side of the cathode catalyst layer, and is compressed by the fastener.

Abstract: An electrochemical hydrogen pump includes: at least one hydrogen pump unit including an electrolyte membrane, an anode, a cathode, an anode separator, and a cathode separator; an anode end plate disposed on the anode separator positioned in a first end in a stacking direction, the first end is one end and the second end is another end; a cathode end plate disposed on the cathode separator positioned in a second end in the stacking direction; a fixing member that prevents at least members from the cathode end plate to the cathode separator positioned in the second end from moving in the stacking direction; a first gas flow channel through which hydrogen generated in the cathode is supplied to a first space disposed between the cathode end plate and the cathode separator positioned in the second end; and a first pressure transmitting member disposed in the first space.

Abstract: Disclosed is a high-temperature operating fuel cell system including: a fuel cell stack; a combustor that combusts a cathode off-gas and an anode off-gas; a heat insulator that covers at least part of the fuel cell stack and at least part of the combustor; a first preheater that covers at least part of the heat insulator and preheats an oxidant gas; an oxidant gas feeder that supplies the oxidant gas to the first preheater; a vacuum heat insulator that covers at least part of the first preheater; a sensor that detects information indicating stopping of a power generation operation; and a controller. When a determination is made that the power generation has stopped, the controller controls the oxidant gas feeder to supply the oxidant gas to the first preheater so that the temperature of the vacuum heat insulator is equal to or lower than a prescribed temperature.

Abstract: This invention provides an electrochemical hydrogen pump which allows reduction efficiency due to increase of contact resistances to be suppressed with a light-weight and compact structure. An electrochemical hydrogen pump (24) comprises: single battery cells (m1-m3) that each include an anode separator (7), an anode diffusion layer (5), an anode electrode layer (3), an electrolyte membrane (2), a cathode electrode layer (4), a cathode diffusion layer (6), and a cathode separator (8); and pressurization spaces that are provided in positions sandwiching the anode diffusion layer and the cathode diffusion layer therebetween. The pressurization spaces include an anode pressurization space (27) provided in an anode-side member and a cathode pressurization space (28) provided in a cathode-side member.

Abstract: An electrochemical hydrogen pump includes an electrolyte membrane, an anode on a first primary surface of the electrolyte membrane, a cathode on a second primary surface of the electrolyte membrane, and an anode separator on the anode. The anode includes an anode catalyst layer on the first primary surface of the electrolyte membrane and an anode gas diffusion layer on the anode catalyst layer. The anode gas diffusion layer includes a porous carbon sheet that is a powder molded body.

Abstract: A fuel cell system includes: a fuel cell; a reformer to generate a hydrogen-containing gas; an electric power generation raw material supply unit; a reforming material supply unit configured to supply at least one of reforming water and reforming air, to the reformer; an oxidizing gas supply unit to supply an oxidizing gas to a cathode of the fuel cell; a combustor to ignite an exhaust gas discharged from the fuel cell; and a controller. In an operation stop process of the fuel cell system, the controller causes the oxidizing gas supply unit to supply the oxidizing gas, causes the electric power generation raw material supply unit and the reforming material supply unit to intermittently supply the electric power generation raw material and at least one of the water and the air to the reformer, and causes the ignitor to perform an ignition operation.