A method for controlling a catalytic combustion apparatus having a heater capable of heating fuel to be supplied to a catalyst includes a step of supplying oxidant gas to the catalytic combustion apparatus, and an injection step of injecting the fuel into the catalytic combustion apparatus. The injection step also includes an electric power feeding step of supplying electric power to the heater, and a setting step of setting an injection amount of the fuel to be injected into the catalytic combustion apparatus in response to output of the heater.

A method for controlling a catalytic combustion apparatus having a heater capable of heating fuel to be supplied to a catalyst includes a step of supplying oxidant gas to the catalytic combustion apparatus, and an injection step of injecting the fuel into the catalytic combustion apparatus. The injection step also includes an electric power feeding step of supplying electric power to the heater, and a setting step of setting an injection amount of the fuel to be injected into the catalytic combustion apparatus in response to output of the heater.

The present disclosure provides a nozzle structure for a hydrogen gas burner apparatus capable of reducing an amount of generated NOx. A nozzle structure for a hydrogen gas burner apparatus includes an outer tube and an inner tube concentrically disposed inside the outer tube. The inner tube is disposed so that an oxygen-containing gas is discharged from an opened end of the inner tube in an axial direction of the inner tube. The outer tube extends beyond the opened end of the inner tube in the axial direction of the inner tube so that a hydrogen gas passes through a space between an inner circumferential surface of the outer tube and an outer circumferential surface of the inner tube.

The present disclosure provides a nozzle structure for a hydrogen gas burner apparatus capable of reducing an amount of generated NOx. A nozzle structure for a hydrogen gas burner apparatus includes an outer tube and an inner tube concentrically disposed inside the outer tube. The inner tube is disposed so that an oxygen-containing gas is discharged from an opened end of the inner tube in an axial direction of the inner tube. The outer tube extends beyond the opened end of the inner tube in the axial direction of the inner tube so that a hydrogen gas passes through a space between an inner circumferential surface of the outer tube and an outer circumferential surface of the inner tube.

A combustion chamber assembly unit for a fuel-operated vehicle heater is provided. The combustion chamber assembly includes a combustion chamber housing (12) with a combustion chamber (18), which is defined by a circumferential wall (14) and by a bottom area (16). An oxidation catalytic converter device (54), through which combustion waste gases can flow, is provided downstream in relation to the combustion chamber (18). The combustion chamber assembly further includes a hydrocarbon storage device (74) or/and a nitrogen storage device (76).

A combustion chamber assembly unit for a fuel-operated vehicle heater is provided. The combustion chamber assembly includes a combustion chamber housing (12) with a combustion chamber (18), which is defined by a circumferential wall (14) and by a bottom area (16). An oxidation catalytic converter device (54), through which combustion waste gases can flow, is provided downstream in relation to the combustion chamber (18). The combustion chamber assembly further includes a hydrocarbon storage device (74) or/and a nitrogen storage device (76).

A reformer furnace having a reaction space formed with reaction tubes, a firing space fitted with burners and a flue gas channel in fluid connection with the firing space. The burners are arranged at a first end face of the reformer furnace and produce flames oriented towards a second end face to fire the reaction tubes. The flue gas channel has a transition region and a withdrawal region, wherein the flue gas channel is connected to the second end face of the firing space via the transition region and the transition region of the flue gas channel has a reduced channel diameter compared to the withdrawal region of the flue gas channel. The transition region has a constriction relative to the withdrawal region which results in a hydraulic decoupling between the firing space and the withdrawal region of the flue gas channel.

A reformer furnace having a reaction space formed with reaction tubes, a firing space fitted with burners and a flue gas channel in fluid connection with the firing space. The burners are arranged at a first end face of the reformer furnace and produce flames oriented towards a second end face to fire the reaction tubes. The flue gas channel has a transition region and a withdrawal region, wherein the flue gas channel is connected to the second end face of the firing space via the transition region and the transition region of the flue gas channel has a reduced channel diameter compared to the withdrawal region of the flue gas channel. The transition region has a constriction relative to the withdrawal region which results in a hydraulic decoupling between the firing space and the withdrawal region of the flue gas channel.

A system includes a tank containing a fluid to be heated; a U-shaped pipe disposed proximate a bottom of the tank, a majority of the extent of the U-shaped pipe being disposed within an interior of the tank; a catalyst unit embedded within the U-shaped pipe, the catalyst unit comprising a catalyst wrapped, natural gas filled, perforated pipe that is configured to enable a catalytic reaction on its exterior; a vent pipe attached to the U-bend pipe which allows air to circulate; and mechanical controls disposed proximate the U-shaped pipe configured to vary temperature output.

A system includes a tank containing a fluid to be heated; a U-shaped pipe disposed proximate a bottom of the tank, a majority of the extent of the U-shaped pipe being disposed within an interior of the tank; a catalyst unit embedded within the U-shaped pipe, the catalyst unit comprising a catalyst wrapped, natural gas filled, perforated pipe that is configured to enable a catalytic reaction on its exterior; a vent pipe attached to the U-bend pipe which allows air to circulate; and mechanical controls disposed proximate the U-shaped pipe configured to vary temperature output.