Abstract: Disclosed are an air supply device and an air supply method for a hybrid power generation facility in which a gas turbine compresses air introduced from an outside, mixes the compressed air with fuel, and burns a mixture of the compressed air and the fuel to produce combustion gas. The air supply device includes a mixing chamber configured to selectively receive the combustion gas from the gas turbine, an air preheater configured to supply air to the mixing chamber, a burner configured to burn a fluid supplied from the mixing chamber, a first over-firing air supplier configured to receive a fluid from the gas turbine or the air preheater, a first pipeline connecting the gas turbine and the mixing chamber, and a second pipeline connecting the gas turbine and the first over-firing air supplier.

Abstract: A method for improvement of a fossil fuel energy conversion into electrical energy for the simple sub- and supercritical steam cycle is proposed through introduction of additional regenerative cycle duties to improve the evaporation rate per unit of fuel burned, thus minimizing condenser heat loss of the working media. The additional duties provide a supplemental energy credit in the form of heat input to a steam generator where a modified combustion process is realized to convert fossil fuel into carbon monoxide and hydrogen at atmospheric pressure and thus achieving an essential reduction of nitrogen oxides (NOx) formation. The additional duties also involve a direct contact heat transfer to recover latent and thermal energy, contained in the discharged combustion products to provide yet another energy credit that satisfies both conventional and/or added regenerative cycle duties.

Abstract: A controller reduces a rotational speed of a Rankine cycle from a predetermined normal rotational speed during an operation of a compressor in a predetermined state when the controller determines that a predicted refrigerant flow quantity, which is predicted by assuming that the compressor is operated in a sole operation of the Rankine cycle at the predetermined normal rotational speed of the Rankine cycle, exceeds a predetermined flow quantity. The predetermined state is a state that satisfies a predetermined condition, which relates to the sole operation of the Rankine cycle.

Abstract: This invention is related to so-called combined cycle co-generation installations, and it addresses present concerns of the industry. Among these, combustion stability, corrosion (due to large water content in the flue gases), large heat transfer areas, and the like. In some embodiments, an additional heat exchanger is added to heat combustion air with a portion of the exhaust gases resulting from an engine, preferably a gas turbine. As a result, the efficiency of the cycle will improve, the oxidant will be enriched by above 50% oxygen, the combustion process will be enhanced, and the dimensions of the boiler may be reduced. It is considered that the combustion air will require between 10% and 80% of the total flue gas volume, more preferably between 20% and 40%. This is the portion of the flue gases sent through the heat exchanger. A control system designed to optimize the flow of the different streams is also presented.

Abstract: This disclosure is directed toward combined cycle power plants which include at least one gas turbine and one steam turbine thermally coupled through a heat recovery steam generator (HRSG). Exhaust gas from the gas turbine is used to heat feedwater into steam for the steam turbine. One optimum criterion is to design the HRSG so that the exit temperature of the exhaust gas is at a minimum without the occurrence of sulfur condensation on the economizer tube bundles. The allowable minimum temperature varies with the sulfur content of the fuel and, hence, it would be desirable to be able to adjust the tube surface temperature as necessary in accordance with the sulfur content of the gas turbine fuel.

Abstract: A steam or vapor engine comprising a vapor generating apparatus, at least one cylinder with a piston working in the cylinder, and pipes and valves for supplying vapor from the vapor generating apparatus to a closed chamber, formed in the cylinder, and for discharging vapor from the cylinder chamber after a working stroke, and an apparatus for supplying an additive, which rapidly expands at the temperature of the vapor, to the cylinder chamber essentially simultaneously with the vapor.

Abstract: Fossil fuels such as coal or oil are gasified by treatment under superatmospheric pressures with oxygen containing gasifying agents to produce a primary gas containing carbon monoxide and hydrogen. The primary gas is desulfurized and converted in increasing portion into methanol which is stored as the load on the power plant increases. An increasing proportion of the stored methanol is used in addition to desulfurized primary gas in the power plant as the load on the power plant increases.