A fully automatic and efficiently energy-saving barbecue grill is disclosed. The barbecue grill comprises: a grill body, having side walls and a top plate thereon, wherein a grill space is formed inside and a smokeless heating pipe is arranged in the grill space; a gas control device, installed in the grill body, guiding fuel gas to burn in the grill space to heat the smokeless heating pipe; and an automatic grill device, installed in the grill body, rotating food periodically to get grilled by the heat from the smokeless heating pipe.

The present invention relates to a boiler which determines a clogging degree of an exhaust flue through which combustion gas is discharged and adjusts gas supply amount to maintain its combustibility, and a combustion control method thereof, the method of the present invention including a) setting a target heat value for achieving a target temperature, b) applying a first database on the basis of the target heat value, c) measuring a rotational speed of an air blower and a pneumatic pressure of air introduced by rotation of the air blow, d) applying a second database on the basis of a rotational speed difference, a pneumatic pressure difference, and the target heat value to calculate an estimated flue clogging value according to the target heat value, and a) applying a third database according to the estimated flue clogging value to calculate an opening amount of a gas valve and control gas supply amount.

A combustion control apparatus of an Liquefied Petroleum Gas (LPG) reforming system and a method for controlling the same may include a burner provided to supply heat to a reformer, a flame temperature analyzer configured to analyze a flame temperature of the burner, an air flow rate calculator configured to determine an initial value of a flow rate of air to be supplied to the burner depending on a flow rate of fuel gas supplied to the burner, and an air flow rate controller electrically connected to the air flow rate calculator and the flame temperature analyzer and configured to select the flow rate of the air at which the flame temperature transmitted by the flame temperature analyzer reaches a maximum while changing the flow rate of the air from the initial value and to control supply of the selected flow rate of the air to the burner.

In some examples, a method for operating a gas burner appliance includes determining, on basis of a nominal burner-load and on basis of a mixing ratio of gas and air of a gas/air mixture or a λ-value of the gas/air mixture, a nominal air mass flow in order to provide the nominal burner-load. The method further comprises determining the ambient air pressure and the ambient air temperature of the ambient air, determining, on basis of the ambient air pressure and on basis of the ambient air temperature, the atmospheric density of the ambient air, determining on basis of the nominal air mass flow, on basis of the determined atmospheric density of the ambient air, and on basis of a system resistance of the gas burner appliance, the fan speed of the fan in order to provide the nominal burner-load.

An apparatus capable of monitoring and adjusting an in-furnace combustion condition in real time, having: a furnace having a heating chamber, a combustor, a charging door, an exhaust gas flow port, and an exhaust gas flow pipe, wherein the combustor is used for introducing fuel and/or an oxygen-containing gas into the heating chamber to form a flame, the charging door is used for adding a raw material, and the gas generated by combustion in the heating chamber enters the exhaust gas flow pipe through the exhaust gas flow port; two sensors of the same type arranged at different positions in the exhaust gas flow pipe; and a control device receiving signals of the two sensors and adjusting, according to a difference between the signals, the amount of the fuel and/or the oxygen-containing gas entering the combustor.

A method for evaluating a quasi-stationary pressure difference detectable by a sensor at a gas boiler. The gas boiler has a mixing device (4), a fan (5), a main flow regulator (3), .a control valve (2) and a safety valve (1). The sensor detects a differential pressure between a pressure (p2) at a measuring point upstream of the main flow regulator (3) and downstream of the control valve (2) and a reference pressure (p0, p1) at a reference measuring point. The sensor transmits a signal to an electronic evaluation system. The electronic evaluation system compares the differential pressure during a pre-purge phase, wherein the safety valve (1) is closed, with the differential pressure after the pre-purge phase and detects an error by the comparison.

A carbon sequestration system includes a furnace having an oxy-combustion burner, a mill configured to receive a fuel and to provide the fuel to the oxy-combustion burner, a waste heat recovery exchanger configured to receive a flue gas from the furnace, the flue gas ultimately supplied to one or more of an overfire air port of the furnace, the oxy-combustion burner, the mill, and a CO.sub.2 purification unit, the CO.sub.2 purification unit configured to produce a purified CO.sub.2 stream.

A carbon sequestration system includes a furnace having an oxy-combustion burner, a mill configured to receive a fuel and to provide the fuel to the oxy-combustion burner, a waste heat recovery exchanger configured to receive a flue gas from the furnace, the flue gas ultimately supplied to one or more of an overfire air port of the furnace, the oxy-combustion burner, the mill, and a CO.sub.2 purification unit, the CO.sub.2 purification unit configured to produce a purified CO.sub.2 stream.

The present subject matter relates to a smoke tube boiler including: a mix chamber, a heat exchanger, a firing rod assembly, a sealing means, and an air-cooled cooling means and a water-cooled cooling means.

The present subject matter relates to a smoke tube boiler including: a mix chamber, a heat exchanger, a firing rod assembly, a sealing means, and an air-cooled cooling means and a water-cooled cooling means.