A burner has a housing on which a combustion tube is arranged, wherein the combustion tube has an opening at the end averted from the housing, wherein a mixing element is provided in the combustion tube, and the space between the mixing element and the opening forms a combustion chamber, wherein the housing has at least two mutually separate channels which open out in the mixing element, wherein gases flow through the channels and the mixing element, and mixing of the gases takes place for the first time in a combustion chamber, wherein the mixing element is produced in an additive manufacturing process and has at least two separate intermediate channels which branch in the direction of the combustion chamber in a flow direction.

A burner has a housing on which a combustion tube is arranged, wherein the combustion tube has an opening at the end averted from the housing, wherein a mixing element is provided in the combustion tube, and the space between the mixing element and the opening forms a combustion chamber, wherein the housing has at least two mutually separate channels which open out in the mixing element, wherein gases flow through the channels and the mixing element, and mixing of the gases takes place for the first time in a combustion chamber, wherein the mixing element is produced in an additive manufacturing process and has at least two separate intermediate channels which branch in the direction of the combustion chamber in a flow direction.

Systems and methods presented herein generally relate to determining flaring efficiency of a flare based at least in part on radiant or thermal heat generated by the flare that is detected by one or more flare monitors. In particular, in certain embodiments, a control system may be used to determine a flaring efficiency of the combustion of the flare gas at the tip of the flare based at least in part on the radiant or thermal heat detected by the one or more flare monitors.

The invention relates to a burner as well as to a waste gas treatment device for generating a flame for the combustion of process gas, especially of contaminants, in a combustion chamber, in each case having feed lines for a fuel gas and for an oxidizing agent so that they flow into a pre-mixing chamber, and having an ignition device for igniting the gas mixture contained in the pre-mixing chamber. According to the invention, a sensor for detecting and/or monitoring the flame is provided on the burner, especially at one end of the burner situated opposite from the pre-mixing chamber.

The invention relates to a burner as well as to a waste gas treatment device for generating a flame for the combustion of process gas, especially of contaminants, in a combustion chamber, in each case having feed lines for a fuel gas and for an oxidizing agent so that they flow into a pre-mixing chamber, and having an ignition device for igniting the gas mixture contained in the pre-mixing chamber. According to the invention, a sensor for detecting and/or monitoring the flame is provided on the burner, especially at one end of the burner situated opposite from the pre-mixing chamber.

Cooking assemblies, such as cooktop appliances, including methods of operation thereof, are provided. A method of operating a cooktop appliance may include receiving a mode selection signal from a user interface of the cooktop appliance. The method may also include receiving a utensil signal from a cooking utensil positioned on a primary heating element and restricting heat generation at a secondary heating element or transmitting a notification signal.

A method to determine a reduction rate of a recovery boiler using optical information from a chemical smelt sample. A processor is used to read a digital frame at least part of which represents the chemical smelt sample of the recovery boiler. An area of interest is determined from the digital frame read comprising at least part of the area in the digital frame representing the chemical smelt sample. Of the pixel values of the area of interest, one or more spectral characteristic values correlating with the change of reduction rate are determined. The reduction rate of the recovery boiler is determined using a reduction rate function of one or more of the determined spectral characteristic values weighted at predetermined weights.

Various embodiments include a control system comprising: an ionization electrode; a flame sensor; a first signal conditioning circuit for the ionization electrode; a second signal conditioning circuit for the flame sensor; an output unit; and a processor. The processor: receives a first and a second ionization signal indicative of ionization currents from the first signal conditioning circuit; receives a first and a second flame signal indicative of radiations originating from a flame via the second signal conditioning circuit; produces a derived ionization signal as a function of the first and the second ionization signals; produces a derived flame signal as a function of the first and the second flame signals; determines if a flame lift-off condition exists based on the derived ionization signal and the derived flame signal; and if a flame lift-off condition exists, produces a safety signal and transmits the safety signal to the output unit.

A fuel-fired device can include an air-moving device that mixes air and a fuel to generate a fuel-air mixture. The fuel-fired device can also include an air box that provides the air to the air-moving device, and a fuel valve that provides the fuel to the air-moving device, where the fuel valve includes a tracking port coupled to the air box, where the tracking port detects a pressure of the air box. The fuel-fired device can further provide a pressure-regulating device disposed between a pressurized component and the tracking port of the fuel valve. The flow regulating device can control, during an ignition phase of operation, an amount of the fuel provided by the fuel valve to the air-moving device.

Present embodiments are directed to a system and method for generating a flame effect. An embodiment includes a nozzle assembly with an outer nozzle and an inner nozzle. At least a portion of the inner nozzle is nested within at least a portion of the outer nozzle. The system also includes a fuel source with two or more separate types of fuel.