Abstract: An integrated combustor-thermoelectric generator and method for producing electrical power and/or for operating a pneumatic device. A thermoelectric generator includes a fuel and air mixture chamber with a combustor connected to the mixture chamber. The combustor including a longitudinal centerbody comprising a varying cross-sectional area along an axial length of the centerbody and a plurality of thermoelectric couples and/or modules disposed axially along sides of the centerbody. The thermoelectric generator can be paired with a DC air compressor for operating a pneumatic device by directing heated gases from the combustor to a plurality of thermoelectric couples and/or modules, and powering the air compressor with the thermoelectric couples and/or modules. The thermoelectric generator and DC compressor can be installed to a natural gas source at a well pad for operating a pneumatic device at the well pad.

Abstract: An integrated combustor-thermoelectric generator and method for producing electrical power and/or for operating a pneumatic device. A thermoelectric generator includes a fuel and air mixture chamber with a combustor connected to the mixture chamber. The combustor including a longitudinal centerbody comprising a varying cross-sectional area along an axial length of the centerbody and a plurality of thermoelectric couples and/or modules disposed axially along sides of the centerbody. The thermoelectric generator can be paired with a DC air compressor for operating a pneumatic device by directing heated gases from the combustor to a plurality of thermoelectric couples and/or modules, and powering the air compressor with the thermoelectric couples and/or modules. The thermoelectric generator and DC compressor can be installed to a natural gas source at a well pad for operating a pneumatic device at the well pad.

Abstract: A system to provide a two piece robust fluid injector. According to various embodiments, the fluid injector is a fuel injector for a combustion engine. The injector includes two coaxially formed annuluses. One annulus is formed in a face plate and the second annulus or hole is defined by a tube extending through the face plate. The tube extends through the face plate in a portion of a through bore which also is used to define the second annulus. The second annulus is formed using a throughbore through which the tube extends. This allows the second annulus to always be formed inherently and precisely substantially coaxial with the first annulus. Moreover, the second annulus can be formed with a much greater tolerance than if other independent components needed to be added.

Abstract: A gaseous oxygen resonance igniter includes a body with a first inlet for gaseous oxygen incorporating a supersonic nozzle. An outlet from the body incorporates an orifice of predetermined size to maintain a desired pressure in the body. An aperture in the body opposite the first inlet provides a port to a ceramic resonance cavity. A ceramic bleed disc is engaged at a second end of the resonance cavity. An end cap incorporates a plenum adapted to receive high temperature oxygen flow from the resonance cavity through the bleed disc. An exhaust port is connected to the plenum for the high temperature oxygen which flows to a mixing chamber which introduces pilot fuel for ignition as a combustion initiation torch.

Abstract: A gaseous oxygen resonance igniter includes a body with a first inlet for gaseous oxygen incorporating a supersonic nozzle. An outlet from the body incorporates an orifice of predetermined size to maintain a desired pressure in the body. An aperture in the body opposite the first inlet provides a port to a ceramic resonance cavity. A ceramic bleed disc is engaged at a second end of the resonance cavity. An end cap incorporates a plenum adapted to receive high temperature oxygen flow from the resonance cavity through the bleed disc. An exhaust port is connected to the plenum for the high temperature oxygen which flows to a mixing chamber which introduces pilot fuel for ignition as a combustion initiation torch.

Abstract: A system to provide a two piece robust fluid injector. According to various embodiments, the fluid injector is a fuel injector for a combustion engine. The injector includes two coaxially formed annuluses. One annulus is formed in a face plate and the second annulus or hole is defined by a tube extending through the face plate. The tube extends through the face plate in a portion of a through bore which also is used to define the second annulus. The second annulus is formed using a throughbore through which the tube extends. This allows the second annulus to always be formed inherently and precisely substantially coaxial with the first annulus. Moreover, the second annulus can be formed with a much greater tolerance than if other independent components needed to be added.