Siemens Energy, Inc.

Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Monica B Hansel

Michael Scheurlen

James H Sharp

Ray L Johnson

Marlon H Farquharson

Karin Marjan Oostendorp-Kramer

Joshua A Bernstein

A system and method for increasing the responsiveness of a duct fired, combined cycle power generation plant () via operating one or more gas turbine engines () at a part load condition less than 100 percent load, one or more steam turbine engines (), and one or more supplemental burners () providing additional heat to a heat recovery steam generator () upstream from the steam turbine engine () is disclosed. The combination of the steam turbine engines () and supplemental burners () operating together with gas turbine engines () at a part load condition enables the system to quickly change output to accommodate changes in output demand of the duct fired, combined cycle power generation plant (). By operating the one or more gas turbine engines () at a part load condition, the gas turbine engines () are able to be used to increase net output of the combined cycle power generation plant () faster than relying on increasing output via duct firing.

System and method for increasing the responsiveness of a duct fired, combined cycle, power generation plant

An air cooled heat exchanger, such as a combustion turbine intercooler or rotor cooler or an air cooled condenser, utilizes a pressurized gas fluid entraining misting device that evaporatively cools conduits carrying the cooled fluid medium. Evaporative cooling liquid is entrained in the pressurized gas where it is atomized for evaporative cooling of the heat exchanger conduits. In some exemplary embodiments of the invention the misting device is a jet pump or ejector that entrains a supply of non-pressurized cooling liquid. In other exemplary embodiments of the invention the misting device is a misting emitter that entrains a supply of pressurized cooling liquid.

Power plant air cooled heat exchanger or condenser with pressurized gas entrained cooling liquid mister

A combined cycle plant () including: a gas turbine engine () having a compressor (), a combustor and a gas turbine (); a heat recovery steam generator () (HRSG) configured to receive exhaust from the gas turbine engine; a steam turbine () configured to receive steam from the HRSG; a supplemental air arrangement () configured to generate supplemental heated air () when operating and to operate independent of the gas turbine engine; and a kettle boiler () configured to use heat from the supplemental heated air to generate steam used in the steam turbine.

Auxillary steam generation arrangement for a combined cycle power plant

Growing community of inventors

Melbourne, FL, United States of America

Monica B Hansel