The object of the present invention is a plant and related method for the supply to the end-user, by making use of the heating power transferred by a heat source e.g. gas, oil products, coal or renewable type e.g. biomass, solar, geothermal, simultaneously with electric power and/or mechanical power, heating power and cooling power Heating-Cooling operating mode of the plant or simultaneously with electric power and/or mechanical power and heating power only Heating operating mode of the plant or simultaneously with electric power and/or mechanical power and cooling power only Cooling operating mode of the plant. The operation of the plant, according to each of the three operation modes, is obtained by the regulation of several on-off valves and a flow rate regulation valve.

A power plant comprises a boiler, a turbine, a condenser, a feed water heater, a deaerator, a deaerator water level control valve, an extraction system which introduces the steam extracted from the turbine into the feed water heater, an extraction valve, an auxiliary steam introduction system which introduces auxiliary steam into the feed water heater, an auxiliary steam control valve and a control device. When a rapid load increase request is made, the control device controls, to orient the extraction valve in a closing direction, to maintain an opening of the deaerator water level control valve, and to orient the auxiliary steam control valve in an opening direction.

A fluidized bed boiler plant and a method of preheating combustion gas in a fluidized bed boiler plant. The boiler plant includes a furnace and a combustion gas channel, and a water-steam cycle including an evaporator section, a superheater section including a last superheater and a steam turbine, and a superheating path for conveying steam from the evaporator section via the superheater section to the steam turbine, and a first combustion gas preheater. The fluidized bed boiler plant includes a second combustion gas preheater, a steam extraction line attached in flow connection with the second combustion gas preheater and with the superheating path in a location upstream of the last superheater for conveying steam from the superheating path to the second combustion gas preheater.

A method includes determining, via a processor, a commanded temperature rate for a component of a steam turbine system. The method further includes determining, via the processor, a measured temperature rate for the component of the steam turbine system. The method additionally includes determining, via the processor, a variable multiplier based at least in part on the commanded temperature rate and the measured temperature rate. The method also includes deriving, via the processor, a multiplied temperature rate command by applying the variable multiplier to the commanded temperature rate.

A method includes determining, via a processor, a commanded temperature rate for a component of a steam turbine system. The method further includes determining, via the processor, a measured temperature rate for the component of the steam turbine system. The method additionally includes determining, via the processor, a variable multiplier based at least in part on the commanded temperature rate and the measured temperature rate. The method also includes deriving, via the processor, a multiplied temperature rate command by applying the variable multiplier to the commanded temperature rate.

The present invention is a system and method of power medium expansion that functions with a rate of efficiency higher than systems found in prior art. Novel features of the system increase the overall efficiency with the use of a power medium that begins the cycle in the liquid state and enters the gaseous state. An additional novel feature is the use of additional heat that may also increase the overall cycle efficiency. Another additional novel feature is recuperating energy that can supplement the phase change of the power medium along with isolating the components from the ambient.

A triphase organic matter pyrolysis system includes multiple devices cooperating with each other. The feeding device delivers organic matters into the preheating device. The preheated organic matters are delivered into the pyrolysis and carbonization reaction device. The steam generating device produces a saturated steam which is delivered into the water ion generating device which heats the saturated steam into a superheated steam which is dissociated into water ions which are delivered into the pyrolysis and carbonization reaction device. The water ions cut, dissociates and carbonizes the organic matters to form carbon residues and gas-liquid wastes. The heat energy is recycled by the heat recycle device and is delivered into the preheating device. The gas-liquid wastes are processed by the gas-liquid separation device and the gas purifying device to form gas and liquid that are harmless.

One of the objects of the invention is to provide a water-saving type advanced humid air gas turbine system (AHAT) that can decrease the amount of makeup water to be supplied from the outside, by reducing the amount of water consumed when the gas turbine system is starting up, shut down, or subjected to load rejection. The gas turbine system includes a compressor, the compressed air header for generating humidified combustion air, a combustor for generating combustion gas, and the turbine. When the gas turbine system is starting up, shut down or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator.

One of the objects of the invention is to provide a water-saving type advanced humid air gas turbine system (AHAT) that can decrease the amount of makeup water to be supplied from the outside, by reducing the amount of water consumed when the gas turbine system is starting up, shut down, or subjected to load rejection. The gas turbine system includes a compressor, the compressed air header for generating humidified combustion air, a combustor for generating combustion gas, and the turbine. When the gas turbine system is starting up, shut down or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator.

Inlet air heating systems for combined cycle power plants and combined cycle power plants including inlet air heating systems are disclosed. The inlet air heating systems may include a plurality of heating coil assemblies partially positioned within an inlet housing of a gas turbine system, and a vent valve in fluid communication with each of the heating coils. The inlet air heating system may also include a supply line in fluid communication with the heating coils to provide water to the heating coils, and a hot water line in fluid communication with the supply line and a component positioned downstream of a condenser of the combined cycle power plant. The hot water line may provide hot water from the combined cycle power plant to the supply line. Additionally, the inlet air heating system may include a drain line in fluid communication with the heating coils and the condenser.