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1. WO2011005343 - COMBINED CYCLE POWER PLANT

Publication Number WO/2011/005343
Publication Date 13.01.2011
International Application No. PCT/US2010/030747
International Filing Date 12.04.2010
IPC
F02C 6/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
6Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
04Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
06providing compressed gas
08the gas being bled from the gas-turbine compressor
F02C 6/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
6Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
18using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
F22B 1/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
1Methods of steam generation characterised by form of heating method
02by exploitation of the heat content of hot heat carriers
18the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
F01K 7/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
10characterised by the engine exhaust pressure
12of condensing type
F01K 11/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
11Steam engine plants characterised by the engines being structurally combined with boilers or condensers
02the engines being turbines
F01K 19/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
19Regenerating or otherwise treating steam exhaust from steam engine plant
02Regenerating by compression
04in combination with cooling or heating
CPC
F01K 23/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
23Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
02the engine cycles being thermally coupled
06combustion heat from one cycle heating the fluid in another cycle
10with exhaust fluid of one cycle heating the fluid in another cycle
F01K 3/245
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
3Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
18having heaters
24with heating by separately-fired heaters
245delivering steam at different pressure levels
F01K 7/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam engine plants characterised by the use of specific types of engine
06the engines being of multiple-inlet-pressure type
Y02E 20/16
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
20Combustion technologies with mitigation potential
16Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Applicants
  • NRG ENERGY, INC. [US]/[US] (AllExceptUS)
  • ROSE, Steven Andrew [US]/[US] (UsOnly)
  • DOYLE, Christopher James [US]/[US] (UsOnly)
Inventors
  • ROSE, Steven Andrew
  • DOYLE, Christopher James
Agents
  • THOMPSON, John R.
Priority Data
12/501,30410.07.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMBINED CYCLE POWER PLANT
(FR) CENTRALE ÉLECTRIQUE À CYCLES COMBINÉS
Abstract
(EN)
Disclosed herein are embodiments of combined cycle power plants having elevated exhaust pressure from a steam turbine. The elevated exhaust pressure from the steam turbine may result in an elevated condensate pressure and temperature. A cooling system removes sensible heat from the condensate. The elevated condensate temperature results in a greater temperature difference between the condensate and the working medium in the cooling system. The amount of heat that is dissipated by the cooling system is proportionate to the heat transfer surface and the temperature difference between the condensate and the working medium. As a result of the greater temperature difference, a smaller cooling system configured to operate with a higher temperature condensate may be utilized in place of a larger cooling system configured to operate with lower temperature condensate. By reducing the size of the cooling system, the overall size of the combined cycle power plant may be reduced.
(FR)
La présente invention concerne des modes de réalisation de centrales électriques à cycles combinés ayant une pression d'échappement élevée produite par une turbine à vapeur. La pression d'échappement élevée provenant de la turbine à vapeur peut produire une pression et une température élevées du condensat. Un système de refroidissement élimine la chaleur sensible du condensat. La température élevée du condensat produit une différence de température plus importante entre le condensat et le milieu actif dans le système de refroidissement. La quantité de chaleur qui est dissipée par le système de refroidissement est proportionnelle à la surface de transfert de chaleur et à la différence de température entre le condensat et le milieu actif. Du fait de la différence de température plus importante, un système de refroidissement plus petit, configuré pour fonctionner avec un condensat à température plus élevée peut être utilisé en remplacement d'un système de refroidissement plus important configuré pour fonctionner avec un condensat à température plus faible. La réduction de la taille du système de refroidissement permet de réduire la taille globale de la centrale électrique à cycles combinés.
Also published as
Latest bibliographic data on file with the International Bureau