The efficiency of a solid fuel burning device can be increased and the emissions can be reduced with proper monitoring and guidance. At least one memory and processor can receive information related to operating conditions of a solid fuel burning device from at least one sensor and filter that information and determine a property related to usage of the solid fuel burning device based on fitting the filtered information to a set of reference conditions. The property can be compared to a lookup table comprising triggering events and when the property satisfies one of the triggering events appropriate guidance for operation of the solid fuel burning device can be retrieved and outputted so that alterations can be made to the operating conditions of the solid fuel burning device.

A fired heater has two cells segregated by an insulative wall. A first plurality of burners are located in the first cell and a second plurality of burners are located in the second cell. A radiant tube extends from the first cell to the second cell for carrying a fluid material through the heater to heat the fluid material. The flow of fuel to the burners in either the first cell or the second cell can be terminated to accommodate lower heater duty when demand is lower.

A temperature control system of a gas oven, the gas oven has an oven chamber (1), the temperature control system has burners (2) disposed inside the oven chamber (1), gas nozzles (3) supplying gas to each burner (2); a temperature-controlled gas valve (5) with a temperature sensing rod (4); the temperature-controlled gas valve (5) has a valve rod (51) capable of rotating to different angles to set different working temperatures of the gas oven; the temperature-controlled gas valve (5) has a gas outlet (52) delivering gas to each gas nozzle (3) through a gas distribution mechanism; the temperature sensing rod (4) extends into the oven chamber (1) for sensing current temperature; the temperature-controlled gas valve (5) has a regulating mechanism (53).

Cooktop appliances are provided. A cooktop appliance can include a manifold having a gas input; a first burner in fluid communication with the manifold through a first burner supply line having a first valve; and a second burner in fluid communication with the manifold through a second burner supply line having a second valve, the second burner arranged coaxially with respect to the first burner, wherein the second burner supply line comprises a primary line, a secondary line, and a sum line, the sum line providing a combined flow of gas from the primary line and the secondary line to the second burner, wherein the secondary line of the second burner comprises a third valve.

The method is used for detecting one failure in a burner of a combustor of a turbine system; the combustor comprises a plurality of burners arranged annularly; the turbine system comprises a turbine downstream of the combustor, the method comprising the steps of: A) providing a plurality of temperature sensors arranged annularly at the outlet of the turbine, B) detecting a plurality of temperatures through the plurality of temperature sensors, C) calculating a temperature spread indicator as a function of the plurality of temperatures, and D) carrying out a comparison the temperature spread indicator and a threshold; a positive result of this comparison indicates a burner failure.

A gas appliance includes a burner, a gas valve, and a control device, wherein the gas valve includes a valve body, a flow regulator, a hot film anemometer, and a stepper motor. The valve body communicates with the burner and a gas source. The flow regulator is driven by the stepper motor to change a gas flow rate supplying to the burner. The hot film anemometer is disposed in the valve body and includes a probe exposed to the outlet passage. The control device executes a control method for the gas valve: sensing the gas flow rate in the outlet passage with the hot film anemometer; comparing the gas flow rate sensed by the hot film anemometer with a predetermined gas flow rate, and controlling the stepper motor to drive the flow regulator based on the comparison result, whereby to stabilize the gas flow rate.

Described is a device for controlling a fuel-oxidizer mixture for a premix gas burner, comprising an intake duct, which defines a cross section for the passage of a fluid inside the duct and includes an inlet, a mixing zone and an outlet, an injection duct, connected to the intake duct in the mixing zone, a monitoring device, configured for generating a control signal, representing a combustion state in the burner, a gas regulating valve, positioned along the injection duct, a fan, positioned in the intake duct for generating therein an operating flow in an inflow direction, a control unit, configured to control the rotation speed of the fan, a regulator, coupled with the intake duct for varying the cross section. The control unit is configured for controlling the gas regulating valve in real time.

A cooktop appliance includes a user interface, a gas burner, and a temperature sensor. A manually adjustable primary control valve is coupled to the gas burner. A secondary control valve is connected in series between the manually adjustable primary control valve and the gas burner. A controller is in communication with the secondary control valve. The controller is configured to adjust the secondary control valve in response to a user-determined set temperature, a temperature measurement from the temperature sensor, and a determined position of the manually adjustable primary control valve.

In an immediate hot water supply operation mode in which a circulation pump is activated while a hot water supply faucet is closed, a water heating apparatus forms an immediate hot water supply circulation path by an inner path and an outer path as being combined, the inner path including a heating mechanism including a combustion mechanism and a heat exchanger, the outer path bypassing the hot water supply faucet outside the water heating apparatus. The outer path includes a crossover valve. In the immediate hot water supply operation mode, a controller introduces intermittent combustion to control a detection temperature detected by the temperature sensor to a set temperature. In intermittent combustion, a minimum combustion state and a combustion stop state are alternately provided. In the minimum combustion state, a quantity of heat output from the combustion mechanism is reduced to a minimum value.

The invention relates to an apparatus and a method for controlling 4 a process within a system, particularly a combustion process in a boiler or furnace, comprising the following steps: capturing 1 of state variables (s.sub.t) of the system; creating 2 an interference model, which describes the effects of interference-based system changes (v.sub.t) on the state variables (s.sub.t) of the system; creating 3 a process model, which describes the effects of setting actions (a.sub.t) on the state variables (s.sub.t) of the system; and controlling 4 the process within the system by performing setting actions (a.sub.t) by considering the process model, the interference model and predetermined controlling goals.