A knob assembly includes a front panel, a knob located at a front panel of an appliance and configured to rotate based on operation by a user, a valve shaft that is coupled to the knob and that extends through the front panel, a valve connected to the valve shaft and configured to control supply of gas to the appliance, and a knob sensor configured to detect a rotational position of the valve shaft. The valve shaft is configured to control the valve to adjust a flow rate of gas based on rotation of the valve shaft.

This invention relates to portable heating systems that utilize a portable fuel source. Portable heating systems of the invention generally include a regulator that is configured to vaporize fuel released from a cartridge and to transfer the vaporized fuel to a burner for ignition.

A gas meter system includes a gas meter, a gas production plant, and a center device. The gas meter includes a sound velocity derivation unit configured to derive a sound velocity of a gas supplied to a demand place. The gas production plant includes: a gas production unit configured to produce the gas; and a gas characteristic identification unit configured to identify a gas characteristic representing a relationship between the sound velocity and a heating value of the gas based on an analysis result of a component of the gas produced by the gas production unit. The center device includes a gas heating value derivation unit configured to derive the heating value of the gas passing through the gas meter based on the derived sound velocity of the gas, and on the gas characteristic identified by the gas characteristic identification unit of the gas production plant.

Fluid turbulence inducement apparatus and systems comprise a housing that is disposed in-line in a pipe through which natural gas flows toward a combustion element. Specifically, the pipe provides a source of natural gas for combustion of the same. The housing comprises an angled inlet and angled outlet, and further comprises an atomizer disposed on an end of the angled outlet comprising a plate having a plurality of holes therein.

A multi-component gas analysis system includes a spectrometric analysis device configured to obtain ratio of each of first components in a multi-component gas based on an absorption spectrum of light that has transmitted through the multi-component gas; a density measurement device configured to measure a first density of the multi-component gas; and a calculation device configured to calculate a ratio of each of second components in the multi-component gas using the ratio of each of the first components obtained by the spectrometric analysis device and the first density measured by the density measurement device, the second components being components that cannot be obtained by the spectrometric analysis device.

This invention relates to portable heating systems that utilize a portable fuel source. Portable heating systems of the invention generally include a regulator that is configured to vaporize fuel released from a cartridge and to transfer the vaporized fuel to a burner for ignition.

A gas flare apparatus includes a burner tube that receives combustible gas and includes (a) a burner tube outer perimeter defined by a burner tube outer diameter and (b) a burner tube inner perimeter defined by a burner tube inner diameter. An updraft shield is concentric with the burner tube and extends outwardly relative to the burner tube outer perimeter to an updraft shield outer perimeter. A windshield tube is concentric with the burner tube and has a windshield tube inner diameter that is larger than the burner tube outer diameter. The windshield tube is positioned above the updraft shield. A cover plate spaced apart from and covering an upper opening of the windshield tube.

This invention relates to portable heating systems that utilize a portable fuel source. Portable heating systems of the invention generally include a regulator that is configured to vaporize fuel released from a cartridge and to transfer the vaporized fuel to a burner for ignition.

A control system controls a temperature of a fuel which is supplied to a combustor of a gas turbine via a fuel gas heater, which heats the fuel of the gas turbine, by adjusting a flow rate of heated water which is supplied to the fuel gas heater. The control system includes a water flow rate adjusting unit that adjusts the flow rate of the heated water which is supplied to the fuel gas heater based on a difference between a target temperature of the fuel and the temperature of the fuel on an outlet side of the fuel gas heater.

Provided is a safety valve that can be satisfactorily closed. A safety valve includes a first valve port (13) and a first valve body (4) that are provided in a gas flow channel. The safety valve further includes an attracting part (3) that attracts the first valve body (4) by magnetic force. The safety valve further includes an electric drive mechanism (2) that moves the attracting part (3). The safety valve further includes a second valve port (14) and a second valve body (34) that are provided upstream of the first valve port (13). The second valve body (34) is provided on the attracting part.