Abstract: The hybrid multi-power stroke engine is an improved internal combustion engine that includes a steam engine integrated into the design, which derives power from heat generated at the combustion chamber as well as exhaust manifold of the internal combustion engine. The steam engine injects and exhausts superheated steam directly into the cylinder on a 5th and 6th stroke thereby alternating the engine from internal combustion to steam. A water tank is in fluid communication with a water pump and piping that passes across the cylinder block whereby heat is removed therefrom. The piping is in fluid communication with an exhaust manifold that transfers superheated steam to an electronic steam intake valve that injects the superheated steam on a 5th stroke. An auxiliary camshaft opens an exhaust steam valve on a 6th stroke in order to exhaust the expanded steam from the cylinder.

Abstract: The invention relates to a method for starting a gas and steam turbine system which comprises a gas turbine system which comprises at least one gas turbine, in addition to at least one steam turbine system which comprises at least one steam turbine and at least one steam system. Heat produced by the working fluid and which is released in the gas turbine is guided to the steam system in order to produce steam which drives the steam turbine. According to the invention, during starting, the gas turbine is started prior to the steam turbine and the steam turbine is started in the presence of the first steam in the system and is impinged upon by said steam.

Abstract: The air cooling system and method for a heat recovery steam generator (HRSG) inlet provides a combined cycle power plant utilizing a powerful fan coupled to ductwork connected to pipes that enter the HRSG inlet duct coupled to an exhaust duct of a Combustion Turbine (CT) for lowering the temperature of the CT exhaust gas provided to the heat recovery steam generator by the CT. The cool air injection system is utilized during low load operation or startup of the CT to ensure that spray water from an inter-stage desuperheater in an HRSG is fully evaporated prior to entering the downstream superheater or reheater. A feedback system includes temperature elements measuring the mix temperature that regulates the cooling air injection rate into the HRSG inlet.

Abstract: A method and installation are disclosed which can, for example, provide for reliable, low-Nox-emission operation of a gas turbine installation with hydrogen-rich fuel gas. An exemplary gas turbine installation includes an arrangement for flue gas recirculation into a compressor inlet and for fuel gas dilution. Oxygen content in combustion air can be reduced by recirculation of recooled flue gas, and the fuel gas can be diluted with compressed flue gas. The oxygen reduction in the combustion air can lead to minimum residual oxygen in the flue gas which can be used for fuel gas dilution. As a result of the flue gas recirculation, water content in the combustion air can be increased by feedback of the water which results as a combustion product. The oxygen reduction, increased water content, and fuel dilution can reduce the flame velocity of hydrogen-rich fuel gases and enable a robust, reliable and low-emission combustion.

Abstract: A solar thermal electric power generation system using heating medium that undergoes phase change between liquid phase and vapor phase, including a Fresnel type heat collectors for heating the heating medium by solar thermal energy, a gas turbine generating device for generating electric power while discharging exhaust gas, a heating device including a first channel through which the heating medium flows and a second channel which is located near the first channel and through which the exhaust gas from the gas turbine generating device flows, a vapor-liquid separating device for separating the heating medium having been heated by the heating device into vapor phase and liquid phase, and a turbine generating device driven by the heating medium in vapor phase separated by the vapor-liquid separating device. The heating device heats the heating medium in the first channel by the exhaust gas in the second channel.

Abstract: A system including a gas turbine system and an electrolysis unit configured to produce a hydrogen gas for reducing a minimum emissions compliance load of the gas turbine system.

Abstract: A combined cycle power generation system (10) includes a steam turbine (14, 16, 18), a combustion system (12) including a compressor (24), a combustion chamber (26), a gas turbine (28), and a HRSG (20) to generate steam with energy from the combustion turbine. A flow line (60, 70) passes superheated steam into the combustion chamber. In an associated method a first source of power is provided via a combustion process having a variable reaction temperature in a first turbine. A second source of power is provided via a second turbine. Components of the system are placed in a mode of increasing power output with steam generated from the HRSG, during which a portion of the steam is provided into a combustion chamber associated with operation of the second turbine.

Abstract: The disclosure provides a system including a Rankine power cycle cooling subsystem providing emissions-critical charge cooling of an input charge flow. The system includes a boiler fluidly coupled to the input charge flow, an energy conversion device fluidly coupled to the boiler, a condenser fluidly coupled to the energy conversion device, a pump fluidly coupled to the condenser and the boiler, an adjuster that adjusts at least one parameter of the Rankine power cycle subsystem to change a temperature of the input charge exiting the boiler, and a sensor adapted to sense a temperature characteristic of the vaporized input charge. The system includes a controller that can determine a target temperature of the input charge sufficient to meet or exceed predetermined target emissions and cause the adjuster to adjust at least one parameter of the Rankine power cycle to achieve the predetermined target emissions.

Abstract: One embodiment according to the present invention is a unique system for harnessing thermal energy of a gas turbine engine. Other embodiments include unique apparatuses, systems, devices, and methods relating to gas turbine engines. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present invention shall become apparent from the following description and drawings.

Abstract: A heating medium supply system is provided which, even when a temperature fluctuation of a heating medium occurs continuously, is capable of relieving a bad thermal influence upon a heat exchanging device due to the temperature fluctuation. The heating medium supply system includes: a heating system configured to heat a liquid heating medium by sunlight; a heat exchanging device configured to heat feedwater; heating medium supply piping for circulating the heating medium; a heating medium temperature detecting device, a heating medium flow rate detecting device and a first heating medium flow control valve; and a control device capable of calculating a value of supply thermal energy from results of detections by the heating medium temperature detecting device and the heating medium flow rate detecting device and controlling an operation of the heating medium flow control valve based on the value of supply thermal energy thus calculated.

Abstract: According to the embodiment of the present invention, there are provided a first stage auxiliary burner configured to heat up the exhaust gas in the upstream side of the superheater, a second stage auxiliary burner configured to heat up the exhaust gas in the upstream side of the evaporator, a fuel supply system configured to distribute fuel so as to be supplied to the first stage auxiliary burner and the second stage auxiliary burner. Distribution of fuel charged to each of the first stage auxiliary burner and the second stage auxiliary burner is controlled in accordance with a predetermined distribution ratio of each charging quantity to whole charging quantity in all the range thereof.

Abstract: The disclosure includes a load ramp system for a heat recovery steam generator (HRSG) of a combined cycle power plant and a method of increasing the rate of the load ramp process of a gas turbine system of the combined cycle power plant. In one embodiment, the load ramp system for the HRSG of the combined cycle power plant includes a conduit in fluid communication with a supercharger positioned upstream of a compressor of a gas turbine system in the combined cycle power plant. The conduit of the load ramp system is configured to direct a portion of supercharged air for use in cooling the HRSG during a load ramp process of the gas turbine system in the combined cycle power plant.

Abstract: In a start-up method of a single shaft combined cycle power plant, during a time period from when the gas turbine is started up to when rotation speed of the gas turbine reaches a rotation speed allowing self-sustained operation using the combustion gas, auxiliary steam from the start-up boiler is fed to the low-pressure steam turbine via the low-pressure turbine steam supply pipe by controlling valve opening degree of the auxiliary steam flow control valve. The low-pressure steam turbine generates a drive force. Speed-up control is performed in a unified manner for the gas turbine, the high-pressure steam turbine, the low-pressure steam turbine, and the power generator.

Abstract: A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively connected to the gas turbomachine, a heat recovery steam generator (HRSG) operatively connected to the gas turbomachine and the steam turbomachine, and a cooling system fluidly connected to the gas turbomachine. The cooling system is configured and disposed to pass a coolant through the gas turbomachine to absorb heat. A condensate system is fluidly connected to the steam turbine and the HRSG. The condensate system is configured and disposed to deliver a steam condensate from the steam turbine to the HRSG. A heat exchange member is fluidly connected to the cooling system and the condensate system. The heat exchange member is configured and disposed to transfer heat entrained in the coolant to the steam condensate.

Abstract: A method and apparatus for generation of electric power employing fuel and air staging in which a first stage gas turbine and a second stage partial oxidation gas turbine power operated in parallel. A first portion of fuel and oxidant are provided to the first stage gas turbine which generates a first portion of electric power and a hot oxidant. A second portion of fuel and oxidant are provided to the second stage partial oxidation gas turbine which generates a second portion of electric power and a hot syngas. The hot oxidant and the hot syngas are provided to a bottoming cycle employing a fuel-fired boiler by which a third portion of electric power is generated.

Abstract: A heat recovery steam generation system is provided. The heat recovery steam generation system includes at least one superheater in a steam path for receiving a steam flow and configured to produce a superheated steam flow. The system also includes an inter-stage attemperator for injecting an attemperation fluid into the steam path. The system further includes a control valve coupled to the inter-stage attemperator. The control valve is configured to control flow of attemperation fluid to the inter stage attemperator. The system also includes a controller coupled to the control valve and the inter-stage attemperator. The controller further includes a feedforward controller and a trimming feedback controller.

Abstract: A combined cycle power plant is provided and includes a gas turbine engine to generate power from combustion of a fuel and air mixture, a heat recovery steam generator (HRSG) disposed downstream from the gas turbine engine to receive heat energy from the gas turbine engine from which steam is produced, the HRSG including a superheating element and a drum element, and a steam turbine engine to be receptive of the steam produced in the HRSG and to generate power from the received steam, the HRSG further including a valve operably disposed to isolate the superheating element from the drum element when a risk of condensate formation in the HRSG exists.

Abstract: In one embodiment, a component for a power generation system includes an interior volume for containing steam condensate or gas turbine exhaust gas. A phase change material is disposed around an external surface of the combined cycle power generation system component.

Abstract: An auxiliary burner configured to heat exhaust gas on an upstream side of any one of heat exchangers, and a fuel supply system configured to supply fuel to the auxiliary burner. To avoid damage of a heat-transfer pipe by exhaust gas of high temperature, a reference value on which the restriction on the charging quantity to be supplied to the auxiliary burner is based is set, and the charging quantity of fuel to the auxiliary burner is restricted so as not to exceed a limit defined by the reference value.

Abstract: A power plant is provided and includes a gas turbine engine having a combustor in which compressed gas and fuel are mixed and combusted, first and second supply lines respectively coupled to the combustor and respectively configured to supply the compressed gas and the fuel to the combustor and an exhaust gas recirculation (EGR) system to re-circulate exhaust gas produced by the gas turbine engine toward the combustor. The EGR system is coupled to the first and second supply lines and configured to combine first and second portions of the re-circulated exhaust gas with the compressed gas and the fuel at the first and second supply lines, respectively.

Abstract: A gas turbomachine system includes a compressor portion including an inlet portion, a turbine portion fluidically connected to, and mechanically linked with, the compressor portion, and a combustor assembly including at least one combustor fluidically connected to the turbine portion. An inlet system is fluidically connected to the inlet portion of the compressor portion. The inlet system includes an inlet chiller. An inlet chiller condensate recovery system is fluidically connected to the inlet system. The inlet chiller condensate recovery system includes an inlet fluidically connected to the inlet chiller and an outlet fluidically connected to one of the compressor portion and the combustor assembly.

Abstract: A system to improve gas turbine output and extend the life of hot gas path components includes a subsystem for estimating an amount of water or steam to be added to the flow of air to achieve the desired hot gas path temperature. The system includes a water or steam injection component adapted to inject the amount of water or steam to the flow of air to generate a flow of humid air and an injection subsystem adapted to inject the flow of humid air into a nozzle at the turbine stage are also included. The system includes a temperature sensor disposed at a turbine stage, and a subsystem for determining a desired hot gas path temperature at the turbine stage. An extraction conduit is coupled to a compressor stage and is adapted to extract a flow of air.

Abstract: A combined cycle power plant utilizes an absorption heat transformer to improve plant efficiency. A heat recovery steam generator receives exhaust from a gas turbine and generates steam for input to a steam turbine. The heat recovery steam generator includes a low pressure economizer, an intermediate pressure economizer and a high pressure economizer. The absorption heat transformer is in fluid communication with the low pressure economizer. The absorption heat transformer includes a feed water circuit that draws exhaust water from the low pressure economizer for heating by the absorption heat transformer and directs heated water to at least one of the intermediate pressure economizer and the high pressure economizer.

Abstract: A methanol indirect combustion combined-cycle power generation apparatus and method. A liquid methanol input stream is evaporated to provide a gaseous methanol stream which is converted to syngas that is combusted in a gas turbine assembly to drive a first electrical generator and produce an exhaust gas. Heat from the exhaust gas of the gas turbine assembly is used to produce first and second steam streams. The first steam stream drives a first steam turbine and provides the heat required for converting the gaseous methanol stream to the syngas combustion stream. The second steam stream drives a second steam turbine and provides the heat required for evaporating the liquid methanol input stream. A second electrical generator is driven using at least one of the first and second steam turbines.

Abstract: A method for operating a recirculating waste heat steam generator is provided, in which in a pressure stage of the recirculating waste heat steam generator, the feed water mass flow is guided on the basis of a specified desired value in order to control the water level in a drum. The method should give a recirculating waste heat steam generator a particularly high degree of efficiency and simultaneously a particularly high level of operational flexibility. For this purpose the thermal input introduced into an evaporator of the pressure stage is used as input variable in the determination of the desired value.

Abstract: A heating medium supply system is provided which, even when a temperature fluctuation of a heating medium occurs continuously, is capable of relieving a bad thermal influence upon a heat exchanging device due to the temperature fluctuation. The heating medium supply system includes: a heating system configured to heat a liquid heating medium by sunlight; a heat exchanging device configured to heat feedwater; heating medium supply piping for circulating the heating medium; a heating medium temperature detecting device, a heating medium flow rate detecting device and a first heating medium flow control valve; and a control device capable of calculating a value of supply thermal energy from results of detections by the heating medium temperature detecting device and the heating medium flow rate detecting device and controlling an operation of the heating medium flow control valve based on the value of supply thermal energy thus calculated.

Abstract: Thermal energy storage is leveraged to store thermal energy extracted from a bottom cycle heat engine. The thermal energy stored in the thermal energy storage is used to supplement power generation by the bottom cycle heat engine. In one embodiment, a thermal storage unit storing a thermal storage working medium is configured to discharge thermal energy into the working fluid of the bottom cycle heat engine to supplement power generation. In one embodiment, the thermal storage unit includes a cold tank containing the thermal storage working medium in a cold state and a hot tank containing the working medium in a heated state. At least one heat exchanger in flow communication with the bottom cycle heat engine and the thermal storage unit facilitates a direct heat transfer of thermal energy between the thermal storage working medium and the working fluid used in the bottom cycle heat engine.

Abstract: Various embodiments include power systems. In a particular embodiment, the power system includes a combined-cycle power system having: a first shaft having a first group of components coaxially mounted thereon, the first group of components including: a first steam turbomachine; a first gas turbomachine; and a reheat combustor; and a second shaft separated from the first shaft, the second shaft having a second group of components coaxially mounted thereon, the second group of components including: a second steam turbomachine; a second gas turbomachine; and a duct fluidly coupled to the second gas turbomachine and the reheat combustor, the duct for providing exhaust from the second gas turbomachine to the reheat combustor.

Abstract: A method for reducing NOx emissions in the exhaust of a combined cycle gas turbine equipped with a heat recovery boiler and a catalyst effective for NOx reduction, wherein a slip stream of hot flowing exhaust gases is withdrawn from the primary gas flow after the catalyst at a temperature of 500° F. to 900° F. and directed through a fan to a continuous duct into which an aqueous based reagent is injected for decomposition to ammonia gas and the outlet of the continuous duct is connected to an injection grid positioned in the primary exhaust for injection of ammonia gas into the primary exhaust stream at a location upstream of the catalyst.

Abstract: A combined cycle power generation plant can include at least one gas turbine and at least one steam turbine. A method for providing Asymmetric Joint Control for Primary Frequency Regulation (PFR) in the combined cycle power generation plant can include the use of the spinning energy existing in the high pressure steam to rapidly supply additional power to the steam turbine for PFR service within the time frame established as a requirement to participate in the PFR service. The PFR control method can be carried out by controlling flow of high pressure steam to a medium pressure steam circuit through a bypass.

Abstract: A fossil-fueled power station including a steam turbine is provided. A steam generator is mounted downstream of the steam turbine via a steam return line and a carbon dioxide separation device. The carbon dioxide separation device is connected to the steam return line via a process steam line and a backpressure steam turbine is mounted into the process steam line.

Abstract: A turbo compressor train is provided. The turbo compressor train includes a turbo compressor unit and a drive assembly for driving the turbo compressor unit. The drive unit has a gas turbine and a generator and a steam turbine. The steam turbine may be coupled together with the generator to the turbo compressor unit and the gas turbine by means of a coupling device. The coupling device has an overrun coupling and a coupling exciter with which the overrun coupling may be taken from a disengaged condition to an active condition by engaging of the overrun coupling at synchronous speed of the gas turbine and the steam turbine and if the overrun coupling is engaged, disengages upon a speed increase to the steam turbine and generator so that the generator may be driven by the steam turbine at a higher speed than the turbocompressor unit by the gas turbine.

Abstract: A heat recovery steam generator has a plurality of heat exchangers, including superheaters 28, 30, an evaporator 32 and an economizer 34, disposed in a duct 27 along the flow direction of an exhaust gas 25 from a gas turbine 14, and generates steam by utilizing the exhaust gas 25 from the gas turbine 14. The heat recovery steam generator includes: auxiliary combustors 50, 52, each disposed upstream of one of the heat exchangers, for heating the exhaust gas by means of burners; and an air supply device for supplying air to the burners of the auxiliary combustor 52 from the outside of the duct.

Abstract: A fossil-fueled power station including a steam generator is provided. A steam turbine is mounted downstream of the steam generator via a hot intermediate superheater line and a carbon dioxide separation device. The carbon dioxide separation device is connected to the hot intermediate superheater line via a process steam line and a backpressure steam turbine is mounted into the process steam line.

Abstract: This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and water vapor comprising a stage in which a portion of the hydrocarbon feedstock is sent to a vapor-reforming unit and another portion of the hydrocarbon feedstock is sent directly to an autothermal reformer in a mixture with the effluent that is obtained from a vapor-reforming unit, a vapor-reforming stage of the hydrocarbon feedstock in a vapor-reforming unit, a stage for autothermal reforming of the stream that is obtained in the preceding stage as well as the hydrocarbon feedstock that is sent directly into an autothermal reformer, a vapor conversion stage of the synthesis gas that is obtained in the preceding stage, and a stage for recovering carbon dioxide that is present in the stream that is obtained in the vapor conversion stage.

Abstract: A combined cycle power plant is provided and includes a gas turbine engine to generate power, a heat recovery steam generator (HRSG) to produce steam from high energy fluids produced from the generation of power in the gas turbine engine, a steam turbine engine to generate additional power from the steam produced in the HRSG and a thermal load reduction system to reduce thermal loading of components of the HRSG and/or the steam turbine engine during at least startup and/or part load operations, which includes an eductor by which a mixture of compressor discharge air and entrained ambient air is injectable into the HRSG and/or an attemperator to cool superheated steam to be transmitted to the steam turbine engine.

Abstract: A hydrogen based combined steam cycle apparatus having an irreversible isobaric Rankine steam cycle portion, an irreversible isobaric Carnot steam cycle portion and a reversible isobaric Rankine steam cycle portion, all three portions of which operate simultaneously. The apparatus includes a source of liquid oxygen, a source of liquid hydrogen, a combustion chamber, a first pump, a second pump, a pressure vessel, a steam turbine, a superheater, and a condenser. A plurality of valves and a computer are used to control the flow of working fluid in the hydrogen based combined steam cycle apparatus.

Abstract: The present application and the resultant patent provide a combined cycle system with a flow of feed water therein. The combined cycle system may include a gas turbine, a steam turbine, a heat exchanger with the flow of feed water flowing therethrough, an expansion source for expanding the flow of feed water, and a supplemental power generation system positioned between the heat exchanger and the expansion source and driven by the flow of feed water.

Abstract: Solutions for clutching turbine wheels are disclosed. In one embodiment, an apparatus includes: a turbine rotor shaft; a plurality of turbine wheels affixed to the turbine rotor shaft; an independent turbine wheel engagably attached to the turbine rotor shaft; and a clutch operably connected to the turbine rotor shaft, the clutch configured to couple and decouple the independent turbine wheel from the turbine rotor shaft.

Abstract: The present application provides a combined cycle system. The combined cycle system may include a compressor water wash system in communication with a compressor and a water wash flow, a combustor water injection system in communication with a combustor and an injection flow, and a transient power augmentation system in communication with the compressor, the combustor, and a flow of supplemental water.

Abstract: A turbomachine includes a turbine portion having a housing enclosing one or more turbine stages. Each of the one or more turbine stages includes a plurality of turbine buckets. The plurality of turbine buckets include an upstream portion and a downstream portion. A first sensor is mounted in the turbine portion at the upstream portion of plurality of turbine buckets and a second sensor is mounted in the turbine portion at the downstream portion of the plurality of turbine buckets. A controller is operatively coupled to the first and second sensors. The controller is configured and disposed to detect a change in flow between the upstream portion and the downstream portion and signal an alarm if the change in flow falls below a predetermined threshold value.

Abstract: Disclosed is a power generation system and method. The system includes a combustor, and a turbine driven by products of the combustor. The turbine includes at least one disk supporting a plurality of airfoils, and the airfoils each have an internal passage formed therein. The system further includes a passage for routing a coolant within the system. A portion of the passage is provided by the internal passages of the airfoils, and another portion of the passage is provided between the airfoils and the combustor. The system also includes a generator driven by the turbine to generate electric power.

Abstract: The present disclosure relates to a method of operating a combined cycle power generating system. The method includes combusting a fuel in a gas turbine, generating electricity and a steam of flue gas, producing a stream of steam in a heat recovery steam generator, producing a stream of concentrated carbon dioxide using an absorption unit and a solvent regeneration unit, forwarding the steam stream to a steam turbine and transferring the heat energy in the stream exiting the steam turbine to the solvent regeneration unit, and a thermal storage unit for storing heat energy.

Abstract: A solar power plant in a new split configuration of a solar Brayton cycle or Brayton/Rankine combined cycle which comprises an array of heliostat mounted mirrors, a solar receiver and a high pressure section of a Brayton cycle power plant mounted near a top of a solar tower, a low pressure section of the Brayton Cycle power plant and the electric generator mounted near or at ground level.

Abstract: A combined cycle power system is provided including at least one solar power plant including a concentrating dish configured to concentrate solar radiation; a solar receiver disposed and configured to utilize concentrated solar radiation for heating a first working fluid, and a first turbine configured for generating electricity by expansion therein of the heated first working fluid, and at least one recovery power plant including a heat recovery unit configured for utilizing exhaust heat of the first turbine to heat a second working fluid, and a second turbine configured for generating electricity by expansion therein of the heated second working fluid.

Abstract: The present invention provides methods and system for power generation using a high efficiency combustor in combination with a CO2 circulating fluid. The methods and systems advantageously can make use of a low pressure ratio power turbine and an economizer heat exchanger in specific embodiments. Additional low grade heat from an external source can be used to provide part of an amount of heat needed for heating the recycle CO2 circulating fluid. Fuel derived CO2 can be captured and delivered at pipeline pressure. Other impurities can be captured.

Abstract: A rapid startup heat recovery steam generator (HRSG) comprises a gas inlet, a high pressure section, an optional intermediate pressure section, an optional low pressure section, and a gas outlet. At least one of the pressure sections includes a vertical steam separator.

Abstract: Provided is a gas cooler for cooling a produced gas on a side from which the produced gas exits, the produced gas being produced by partially oxidizing and gasifying a carbon-containing fuel in a gasification furnace inside a pressure vessel. A distance (SL) between tubes of a tube bundle of a heat exchanger provided inside the gas cooler is set such that the tubes are in contact with each other or adjacent to each other in a gas-flow direction of the produced gas. Since the tubes are in contact with each other or adjacent to each other, a particle flowing with the gas flow is only deposited as a deposited particle in a concave portion between the tubes, whereby the decrease in heat exchange efficiency caused by particle deposition can be suppressed.

Abstract: A method of integrating a supplemental steam source into a combined cycle plant comprising a gas turbine engine, generator and heat recovery steam generator (HRSG) by providing a solar steam generation subsystem that captures and transfers heat using solar radiation to produce supplemental superheated steam; providing a steam turbine operatively connected to the gas turbine; and injecting a portion of the steam formed by solar radiation into one or more intermediate stages of the high pressure section of the steam turbine. The exemplary method uses steam produced by the HRSG (having one, two or three pressure levels and with or without reheat), as well as steam produced by a solar steam generation subsystem when the plant is operating at full capacity. Significantly, the throttle pressure of the high pressure steam turbine remains substantially the same when the solar steam generation is either active or inactive.

Abstract: A method for cooling inlet air to a gas turbine is provided. For example, a method is described including passing inlet air through a cooling coil that includes an opening for receiving the inlet air and that is operably connected to a gas turbine power plant. The gas turbine power plant may include at least one gas turbine, and at least one gas turbine inlet which receives the inlet air. The method may further include passing circulating water through a water chiller at a first flow rate to reduce the temperature of the circulating water, the water chiller including a conduit through which the circulating water is capable of passing and passing the circulating water having the first flow rate through the cooling coil in an amount sufficient to lower the temperature of the inlet air.