Abstract:
According to an embodiment, a combustion system is provided, which includes a nozzle configured to emit a diverging fuel flow, a flame holder positioned in the path of the fuel flow and that includes a plurality of apertures extending therethrough, and a preheat mechanism configured to heat the flame to a temperature exceeding a startup temperature threshold.
Abstract:
A high voltage can be applied to a combustion reaction to enhance or otherwise control the combustion reaction. The high voltage is switched on or off by a grid electrode interposed between a high voltage electrode assembly and the combustion reaction.
Abstract:
A system and method for electrically controlling a position of a combustion reaction and/or for protecting a flame controller by decoupling an ionizer from a power supply.
Abstract:
Technologies are provided for employing an ion flow to control a combustion reaction. A combustion reaction is supported at a burner or fuel source. One or more electrical signals are applied to an ionizer to generate an ion flow having a first polarity. The ion flow is introduced to the combustion reaction or a reactant at a first location, imparting a corresponding charge to the combustion reaction. The first location is at least intermittently upstream with respect to a reaction front of the combustion reaction. One or more of the electrical signals are applied to a first electrode at a second location downstream of the first location, which provokes a response by the combustion reaction according to the applied charge. The combustion reaction is controlled by selection of the one or more electrical signals.
Abstract:
A horizontally-fired flame burner includes a flame holder positioned laterally from the burner. The flame holder includes a plurality of perforations that collectively confine a combustion reaction of the burner to the flame holder.
Abstract:
Technologies are described for applying electrical energy according to a physical extent of a combustion reaction, which may include: supporting a combustion reaction at a fuel source; sensing a physical extent of the combustion reaction with respect to a plurality of different locations of a plurality of electrodes; and applying electrical energy to the combustion reaction via at least one of the plurality of electrodes responsive to the physical extent of the combustion reaction. Sensing the physical extent of the combustion reaction may include receiving a sensor signal corresponding to the physical extent of the combustion reaction.
Abstract:
A burner includes a flame position actuator configured to control a location at which a flame is held. Combustion supported at a first location corresponds to high fuel dilution. An electric charge is applied to the fuel stream. If electrical power is lost or removed, the flame is shifted to a location corresponding to a lower fuel dilution.
Abstract:
A burner system includes a fuel nozzle, an electrode configured to apply electrical energy to a combustion reaction supported by the fuel nozzle, a high-voltage converter configured to receive electrical energy from a low-voltage power supply and to provide high-voltage power to the electrode, a battery charger, and a switch module coupled to the battery charger, the converter, and first and second batteries. The switch module is selectively switchable between first and second conditions. In the first condition, the first battery is coupled to the battery charger and decoupled from the high-voltage converter, while the second battery is coupled to the high-voltage converter and decoupled from the battery charger. In the second condition, the first battery is coupled to the high-voltage converter and decoupled from the battery charger, while the second battery is coupled to the battery charger and decoupled from the converter.
Abstract:
A method and apparatus for stabilizing a flame in a combustion volume is disclosed. The present method and device may include a burner nozzle configured to support the flame, a halo electrode configured to anchor the flame, and electrodes disposed in top and bottom regions of the flame configured to apply voltage difference above or below the halo electrode that may assist in anchoring of the flame to the halo electrode while also controlling a shape and position of the flame. Effects of different electrical configurations within the combustion volume for stabilizing the flame are also disclosed.
Abstract:
A corona electrode may be used to apply an electric field to a combustion reaction to cause a response in the combustion reaction. The corona electrode may include an ion-ejecting feature having a small radius.