The present disclosure seeks to provide a method to design a metallic burner component for use in industrial processes such as cracking, reforming and steam generation for which the burner component is exposed to high furnace temperatures. The burner component comprises a series of cooling channels and internal baffling to direct the flow of one or more fuel and oxidant over the portions of the burner exposed to the high furnace temperatures. The present disclosure also provides the resulting burner.

Apparatus and methods for a gas furnace are disclosed. The gas furnace includes a variable combustion control which monitors the temperature of the burner and modifies one of the amount of combustion air supplied and the amount of gas fuel supplied to the mixing chamber. The described systems can dynamically accommodate differences in air quality and gas fuel supply to provide an optimum BTU output irrespective of differences in geographic location of usage. The gas furnace can include a dynamic response unit which predicts an optimum rate of heating to maintain a target room temperature, thereby preventing unnecessary shut down and costly re-ignition sequences, and maintaining the gas furnace at an optimum BTU output level.

A method includes identifying a first steady-state gain associated with a relationship between a characteristic of a furnace and a setpoint used by a controller that is configured to control the characteristic of the furnace, The first steady-state gain is identified using data collected when the furnace is not suffering from flooding. The method also includes identifying a second steady-state gain associated with the relationship during operation of the furnace. The method further includes comparing the first and second steady-state gains and identifying actual or potential flooding of the furnace based on the comparison.

A fuel supply system for a gas burner assembly is provided. The gas burner assembly includes an inner burner stage positioned concentrically within an outer burner stage. The fuel supply system includes a fuel supply for providing a primary flow of fuel through a primary fuel conduit. A control valve and a modulating valve are operably coupled in series on the primary fuel conduit for regulating the primary flow of fuel. A first fuel supply conduit and a second fuel supply conduit tee off the primary fuel conduit to supply fuel to the outer burner stage and the inner burner stage, respectively. A shutoff valve is operably coupled to the first fuel supply conduit for stopping the flow of fuel through the first fuel supply conduit, e.g., during a simmer operation.

The present disclosure seeks to provide a metallic burner tile for use in industrial processes such as cracking. The tile is substantially metallic (e.g. more than 80%) with the balance being ceramic coating on surfaces exposed to high temperature. The tile is lighter and more durable than the current ceramic burners.

An oxy-fuel burner with monitoring including a fuel passage terminating in a fuel nozzle, a primary oxidant passage terminating in an oxidant nozzle, one or more sensors including a nozzle temperature sensor for sensing at least one of an oxidant nozzle temperature and a fuel nozzle temperature and a position sensor for sensing a burner installation angle, and a data processor programmed to receive data from the sensors and to determine the presence or absence of an abnormal burner condition including a potential partial obstruction of at least one of the primary oxidant passage and the fuel passage based on an increase or decrease in at least one of the oxidant nozzle temperature and the fuel nozzle temperature, and to determine whether the burner is installed at a desired orientation with respect to at least one feature of the furnace based on the burner installation angle.

The burner includes a first tube portion having a tube end including an ejection port and a second tube portion extending toward the ejection port in the first tube portion. The combustion gas generated by combusting air-fuel mixture is ejected from the ejection port. The second tube portion includes a heat exchanging portion that vaporizes liquid fuel with combustion heat of the combustion chamber and supplies the vaporized fuel to the premixing chamber. The outer surface of the second tube portion functions as a heat receiving surface of the heat exchanging portion. A fuel supply section of the burner is configured to vaporize liquid fuel and supply the vaporized fuel to the premixing chamber, and supply liquid fuel to the heat exchanging portion.

A regulation method of a premixed gas burner substantially and/or essentially fed by hydrogen H.sub.2 as well as a device to carry out such method is described.

The disclosed technology includes systems and methods for detecting an at least partially obstructed air filter in a furnace. The disclosed technology can include a system and method that can receive temperature data from a flame sensor configured to detect a temperature of a flame in a burner, determine that an air filter associated with the burner is at least partially obstructed by determining that the temperature data indicates the flame temperature is greater than or equal to a threshold temperature, and output an alarm signal indicating that the air filter is at least partially obstructed.

A method for operating a premix gas burner wherein an air flow rate and/or a fuel gas flow rate are controlled so as to generate heat with the premix burner in accordance with a heat demand related value. The fuel gas comprises hydrogen and the method further provides a desired air excess factor relation of the air/fuel gas mixture which defines the relation between a desired air excess factor and an input variable like the heat demand related value, an air flow rate related value, or a fuel gas flow rate related value. The desired air excess factor is not a constant factor but varies for different input variable values. The fuel gas flow rate and/or the air flow rate are controlled such that an actual air excess factor converges towards the desired air excess factor while meeting the heat demand.