摘要:
A method for determining an estimate of the specific gravity of a fuel for a gas turbine engine is disclosed. The gas turbine engine includes a fuel control valve and one or more fuel injectors. The method includes determining a first estimate of the specific gravity based on an orifice flow model of the fuel control valve. The method also includes determining a second estimate of the specific gravity based on a combined orifice flow model of the one or more fuel injectors. The method further includes recursively filtering the first estimate and the second estimate to determine a third estimate of the specific gravity.
摘要:
A method for determining an estimate of the specific gravity of a fuel for a gas turbine engine is disclosed. The gas turbine engine includes a fuel control valve and one or more fuel injectors. The method includes determining a first estimate of the specific gravity based on an orifice flow model of the fuel control valve. The method also includes determining a second estimate of the specific gravity based on a combined orifice flow model of the one or more fuel injectors. The method further includes recursively filtering the first estimate and the second estimate to determine a third estimate of the specific gravity.
摘要:
A unique and useful dynamic control system has been invented for the control of a catalytic combustion system for use on a dynamic plant, preferably, a gas turbine engine. The dynamic control system facilitates the replacement of conventional flame combustion systems with catalytic combustion systems, which produce far less pollutants, by producing acceptable transient performance of the combustion system. A method of controlling the catalytic combustion process comprises the steps of calculating a mass flow of air introduced into the combustor, monitoring a flow of fuel to be combusted within the combustor, monitoring a temperature of the air introduced into the combustor, calculating an inlet temperature set point based on the mass flow and fuel flow, and controlling a pre-burner to heat the air based on the inlet temperature set point, the mass flow, and the temperature of the air. Further, the mass flow may be estimated based on ambient air temperature and pressure, and compressor speed. A catalytic combustion gas turbine system is also presented, the operation of which is controlled by a dynamic plant controller which generates a fuel flow rate demand signal to control the flow of fuel to be combusted in response to dynamic plant demands.
摘要:
A device for controlling fuel combustion in a burner detects the temperature in the burner and controls, based on the detected temperature, electric power supplied to an atmozing glow plug of a fuel atomizer which heats and atomizes fuel.
摘要:
The present invention generally relates to processes for production of ethanol from cellulosic biomass. The present invention also relates to production of various co-products of preparation of ethanol from cellulosic biomass. The present invention further relates to improvements in one or more aspects of preparation of ethanol from cellulosic biomass including, for example, improved methods for cleaning biomass feedstocks, improved acid impregnation, and improved steam treatment, or “steam explosion.”
摘要:
A pipe, in particular in the air supply system of internal combustion engines which are provided, in particular, with an intake system and/or control electronics, is described, wherein the internal pipe and/or the internal pipe surface (1) have/has at least one element (1, 5, 6) which changes the diameter (2) of the internal pipe and/or the cross-sectional area of the internal pipe.
摘要:
Provided is a fuel flow control method of a gas turbine combustor provided in a humid air gas turbine, by which method NOx generation in the gas turbine combustor is restricted before and after the starting of humidification and combustion stability is made excellent. The fuel flow control method of a gas turbine combustor provided with a plurality of combustion sections, to which a fuel is individually supplied, a part of the gas turbine combustor including a combustion section or sections, which are more excellent in flame holding performance than the remaining part, the method evaluating a moisture content of a combustion air at the startup of humidification on the basis of a humidification water quantity and an air temperature after humidification and controlling a fuel ratio supplied to the combustion section or sections of excellent flame holding performance when fuel ratios of fuels supplied to the respective combustion sections are controlled in accordance with a humidified state of a compressed air brought about by a humidifier provided in the humid air gas turbine.
摘要:
The invention relates to a device and a method for monitoring burners using an automatic heating machine (1) for controlling or regulating the burner (15), and a temperature controller (5). At least the flow/boiler temperature (T?VL?) is detected and is compared with a predeterminable first maximum flow boiler temperature (T?VLmax1?) by means of the temperature controller (5). The burner (15) is switched off when the flow/boiler temperature (T?VL?) reaches or exceeds the predeterminable first maximum flow/boiler temperature (T?VLmax1?), while the flow/boiler temperature (T?VL?) is compared with a predeterminable second maximum flow/boiler temperature (T?VLmax2?) which is higher than the predeterminable first maximum flow/boiler temperature (T?VLmax1?). The burner (15) is switched off and locked when the flow/boiler temperature (T?VL?) reaches or exceeds the predeterminable second maximum flow/boiler temperature (T?VLmax2?) and additionally when an error signal (F) is produced by the temperature controller (5). The error signal (F) is produced when the burner (15) has not been switched off correctly by the temperature controller (5) when the first maximum flow/boiler temperature (T?VLmax1?) has been achieved.
摘要:
Disclosed is a boiler apparatus useful for the heating of living and working spaces. The disclosed boiler apparatus incorporates a burner element and controller element that cooperate to provide a modulated firing rate. The modulated firing rate serves to increase the efficiency of the disclosed boiler apparatus. The boiler apparatus of the invention incorporates a heat exchanger and a combustion system. In operation, the control element collects and analyzes information from a multiplicity of sensors in order to modulate the firing rate of the burner element so as to maintain a selected output temperature for the water being heated. This monitoring activity by the control element also avoids short cycling of the boiler apparatus of the invention. The boiler apparatus of the invention also includes an indicator light that provides a visual indication the invention's operational status.
摘要:
The combustion heater when operates at a cold time increases a temperature of engine cooling water, and includes a combustion chamber in which the combustion takes place, an air supply passageway through which the air for the combustion is supplied to the combustion chamber, a heating plug for igniting a combustion fuel within the combustion chamber, and a combustion gas discharge passageway for discharging from the combustion chamber a combustion gas burned in the combustion chamber. Of the air supply passageway and the combustion gas discharge passageway, at least the combustion gas discharge passageway is connected to an intake passageway of the engine, through which the intake air flows toward the cylinders of the engine. The combustion heater has an air suction fan for regulating a quantity of air supplied to the combustion chamber via the air supply passageway, and an ECU which includes a CPU for controlling an operating state of the air suction fan according to an engine rotational speed.