US20080178601A1 - Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors - Google Patents
Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors Download PDFInfo
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- US20080178601A1 US20080178601A1 US11/657,661 US65766107A US2008178601A1 US 20080178601 A1 US20080178601 A1 US 20080178601A1 US 65766107 A US65766107 A US 65766107A US 2008178601 A1 US2008178601 A1 US 2008178601A1
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- airflow
- expander
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 56
- 238000011144 upstream manufacturing Methods 0.000 title claims abstract description 14
- 238000002347 injection Methods 0.000 title claims description 31
- 239000007924 injection Substances 0.000 title claims description 31
- 230000003416 augmentation Effects 0.000 title abstract description 20
- 238000004146 energy storage Methods 0.000 title description 3
- 238000000605 extraction Methods 0.000 title 1
- 238000003860 storage Methods 0.000 claims abstract description 29
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 11
- 230000003190 augmentative effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 5
- 239000003570 air Substances 0.000 description 56
- 238000005516 engineering process Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/14—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
- F02C6/16—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
- F02C7/10—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Definitions
- combustion turbines have significant power degradation associated with increased ambient temperature or high elevations. This loss of power is primarily associated with the reduced mass of the combustion turbine's airflow, caused by the reduced inlet air density.
- a method is provided to augment power of a combustion turbine assembly.
- the combustion turbine assembly includes a main compressor constructed and arranged to receive ambient inlet air, a main expansion turbine operatively associated with the main compressor, combustors constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator associated with the main expansion turbine for generating electric power.
- the method provides stored compressed air from a compressed air storage. The compressed air originating from the storage is heated. The heated, compressed air is expanded in an air expander for producing additional electric power. Airflow is extracted from the expander and is injected into the combustion turbine assembly upstream of the combustors with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at the injection point.
- a compressed air storage 18 is provided that is preferably an underground storage structure that stores air that is compressed by at least one auxiliary compressor 20 .
- the auxiliary compressor 20 is driven by a motor 21 , but can be driven by an expander or any other source.
- the auxiliary compressor 20 charges the storage 18 with compressed air during off-peak hours.
- An outlet 22 of the storage 18 is preferably connected with a heat exchanger 24 .
- the heat exchanger 24 also receives exhaust air 25 from the main expansion turbine 14 . Instead, or in addition to the exhaust air 25 from the main turbine 14 , the heat exchanger 24 can receive any externally available source of heat.
- An outlet 26 of the heat exchanger 24 is connected to an expander 28 that is connected to an electric generator 30 .
- compressed air is withdrawn from the storage 18 , preheated in the heat exchanger 24 and sent to the expander 28 .
- the heated air is expanded though the expander 28 that is connected to the electric generator 30 and produces additional power.
- the exhaust from the expander 28 with injection flow parameters determined by combustion turbine limitations and optimization, is injected into the combustion turbine assembly 11 upstream of combustors 16 .
- structure 32 communicates with structure 35 to facilitate the injection of air.
- the structures 32 and 35 are preferably piping structures.
- Typical gross power augmentation of a combustion turbine associated with an air injection technology is 20-25%.
- the additional power of the additional expander 28 operating with the injection airflow of approximately 12-14% (of the combustion turbine assembly inlet flow) and utilizing a stored compressed air with the inlet pressure of approximately 60-80 bars (a typical stored compressed air pressure) preheated in the heat exchanger 24 to the inlet temperature of approximately 480-500 C, is approximately 5-10% of the combustion turbine assembly 11 power.
- the GE 7241 combustion turbine assembly operating at 35 C could have gross power augmentation of approximately 38-40 MW with the air injection flow of approximately 12% of the combustion turbine assembly inlet flow; the expander 28 additional power is approximately 10 MW with the total power augmentation of approximately 48-50 MW.
- the power generation system 10 heat rate is reduced because the additional expander 28 power is delivered without any additional fuel flow, i.e. with the zero heat rate.
- This system 10 has the following additional (to original embodiment with a combustion turbine assembly 11 ; compressed air storage 18 and charging compressor 20 ) components:
- the overall parameters of the system 10 are optimized based on the overall plant economics including:
- FIG. 2 shows another embodiment of the system 10 ′ that is similar to that of FIG. 1 , except that the additional expander 28 expands the preheated compressed stored air from the stored air pressure to atmospheric pressure resulting in much higher power.
- the expander flow rate is not restricted to the injection rate allowable by a specific combustion turbine assembly.
- the air required for the injection in a combustion turbine assembly for power augmentation with specific parameters is extracted from the expander 28 with specific parameters.
- the compressed air from the storage 18 is directed to the heat exchanger 24 that receives heat from the source of a heat (e.g. exhaust of turbine 14 ).
- the heated air is expanded though the expander 28 that is connected to the electric generator 30 and produces additional power.
- the airflow of expander 28 is a subject for optimization and could be as high as a combustion turbine inlet flow.
- the expander 28 has a provision for an extracted airflow flow with parameters consistent with the requirements of the air injection technology determined by combustion turbine assembly limitations. In other words, the injection flow parameters of the injected airflow are consistent with flow parameters of the main compressor 12 at an injection point.
- the extracted airflow is injected via structure 33 into the combustion turbine assembly 11 (via structure 35 ) upstream of the combustors 16 with a combustion turbine power augmentation of approximately 20-25%.
- the remaining airflow in the expander 28 is expanded though low pressure stages to atmospheric pressure.
- the additional power of the expander is a subject of optimization and could be equal to a combustion turbine power.
- the GE 7241 combustion turbine operating at 35 C could have gross power augmentation of approximately 38-40 MW with the extracted (from the additional expander 28 ) and injected airflow of approximately 12% of the combustion turbine inlet flow; the expander additional power could be as high as the combustion turbine power and is a subject for optimization.
- the use of the expander 28 can be employed in a Combustion Turbine/Combined Cycle Power Plant.
- This system preferably includes the following additional (to the combustion turbine assembly 11 ; compressed air storage 18 and charging compressor 20 ) components:
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Supercharger (AREA)
Abstract
A combustion turbine power generation system (10) includes a combustion turbine assembly (11) including a main compressor (12) constructed and arranged to receive ambient inlet air, a main expansion turbine (14) operatively associated with the main compressor, combustors (16) constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator (15) associated with the main expansion turbine for generating electric power. A compressed air storage (18) stores compressed air. A heat exchanger (24) is constructed and arranged to receive a source of heat and to receive compressed air from the storage so as to heat compressed air received from the storage. An air expander (28) is associated with the heat exchanger and is constructed and arranged to expand the heated compressed air for producing additional electric power. Airflow, extracted from the expander, is injected into the combustion turbine assembly upstream of the combustors for combustion turbine assembly power augmentation.
Description
- This invention relates to power augmentation of combustion turbine power systems with compressed air energy storage and additional expander; and, more particularly, to augmenting power of the system by expanding heated, high pressure compressed air from a storage for producing additional expander power and extracting airflow from the expander and injecting the extracted airflow into the combustion turbine upstream of combustors for combustion turbine power augmentation.
- It is well known that combustion turbines have significant power degradation associated with increased ambient temperature or high elevations. This loss of power is primarily associated with the reduced mass of the combustion turbine's airflow, caused by the reduced inlet air density.
- There are a number of power augmentation technologies targeting the recovery of the power lost by combustion turbines due to high ambient temperatures/high elevation:
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- The Air Injection power augmentation technology that is based on the injection upstream of combustors of additional airflow (humid or dry) that is delivered by external auxiliary compressor(s);
- Inlet chillers that cool the ambient air and provide a corresponding power augmentation;
- Evaporative coolers, inlet fogging and “wet compression” technologies that provide power augmentation by a combination of the inlet air cooling and the increased mass flow through the combustion turbine;
- Air Injection power augmentation technology disclosed in my earlier U.S. Pat. No. 5,934,063, the contents of which is incorporated by reference herein, that is based upon air injection upstream of combustors using a compressed air energy storage. However, the compressed air in the storage typically has a much higher pressure than is needed for the air injection for the power augmentation.
- Thus, there is a need to utilize the compressed air storage high pressure to further improve the incremental power and to improve the overall heat rate of the system.
- An object of the invention is to fulfill the need referred to above. In accordance with the principles of the present invention, this objective is achieved by providing a combustion turbine power generation system including a combustion turbine assembly including a main compressor constructed and arranged to receive ambient inlet air, a main expansion turbine operatively associated with the main compressor, combustors constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator associated with the main expansion turbine for generating electric power. A compressed air storage stores compressed air. A heat exchanger is constructed and arranged to receive a source of heat and to receive compressed air from the storage so as to heat compressed air received from the storage. An air expander is associated with the heat exchanger and is constructed and arranged to expand the heated compressed air for producing additional electric power. Airflow, extracted from the expander, is injected into the combustion turbine assembly upstream of the combustors, with injected airflow parameters being consistent with flow parameters of the main compressor at the injection point.
- In accordance with another aspect of the invention, a method is provided to augment power of a combustion turbine assembly. The combustion turbine assembly includes a main compressor constructed and arranged to receive ambient inlet air, a main expansion turbine operatively associated with the main compressor, combustors constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator associated with the main expansion turbine for generating electric power. The method provides stored compressed air from a compressed air storage. The compressed air originating from the storage is heated. The heated, compressed air is expanded in an air expander for producing additional electric power. Airflow is extracted from the expander and is injected into the combustion turbine assembly upstream of the combustors with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at the injection point.
- Other objects, features and characteristics of the present invention, as well as the methods of operation and the functions of the related elements of the structure, the combination of parts and economics of manufacture will become more apparent upon consideration of the following detailed description and appended claims with reference to the accompanying drawings, all of which form a part of this specification.
- The invention will be better understood from the following detailed description of the preferred embodiments thereof, taken in conjunction with the accompanying drawings, wherein like reference numerals refer to like parts, in which:
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FIG. 1 is a schematic illustration of a combustion turbine power generation system with power augmentation using a compressed air storage supplying compressed air, preheated in a heat exchanger, to an expander that expands the air for providing additional power with expander exhaust airflow being injected upstream of the combustors, provided in accordance with the principles of the present invention. -
FIG. 2 is a schematic illustration of a combustion turbine power generation system with power augmentation using a compressed air storage supplying compressed air, preheated in a heat exchanger, to an expander that expands the air for providing additional power with airflow extracted from a stage of the expander being injected upstream of the combustors, provided in accordance with the principles of another embodiment of the present invention. - With reference to
FIG. 1 , a combustion turbine power generation system with power augmentation, generally indicated as 10, is shown in accordance with an embodiment of the present invention. Thesystem 10 includes a conventional combustion turbine assembly, generally indicated at 11, having amain compressor 12 receiving, atinlet 13, a source of inlet air at ambient temperature andfeeding combustors 16 with the compressed air; amain expansion turbine 14 operatively associated with themain compressor 12, with thecombustors 16 feeding themain expansion turbine 14, and anelectric generator 15 for generating electric power. - A
compressed air storage 18 is provided that is preferably an underground storage structure that stores air that is compressed by at least oneauxiliary compressor 20. In the embodiment, theauxiliary compressor 20 is driven by amotor 21, but can be driven by an expander or any other source. Theauxiliary compressor 20 charges thestorage 18 with compressed air during off-peak hours. Anoutlet 22 of thestorage 18 is preferably connected with aheat exchanger 24. Theheat exchanger 24 also receivesexhaust air 25 from themain expansion turbine 14. Instead, or in addition to theexhaust air 25 from themain turbine 14, theheat exchanger 24 can receive any externally available source of heat. - An
outlet 26 of theheat exchanger 24 is connected to anexpander 28 that is connected to anelectric generator 30. In accordance with the embodiment, during peak hours, compressed air is withdrawn from thestorage 18, preheated in theheat exchanger 24 and sent to theexpander 28. The heated air is expanded though theexpander 28 that is connected to theelectric generator 30 and produces additional power. The exhaust from theexpander 28, with injection flow parameters determined by combustion turbine limitations and optimization, is injected into thecombustion turbine assembly 11 upstream ofcombustors 16. Thus, as shown inFIG. 1 ,structure 32 communicates withstructure 35 to facilitate the injection of air. In the embodiment, thestructures - Typical gross power augmentation of a combustion turbine associated with an air injection technology is 20-25%. The additional power of the
additional expander 28, operating with the injection airflow of approximately 12-14% (of the combustion turbine assembly inlet flow) and utilizing a stored compressed air with the inlet pressure of approximately 60-80 bars (a typical stored compressed air pressure) preheated in theheat exchanger 24 to the inlet temperature of approximately 480-500 C, is approximately 5-10% of thecombustion turbine assembly 11 power. As an example, the GE 7241 combustion turbine assembly operating at 35 C could have gross power augmentation of approximately 38-40 MW with the air injection flow of approximately 12% of the combustion turbine assembly inlet flow; the expander 28 additional power is approximately 10 MW with the total power augmentation of approximately 48-50 MW. Thepower generation system 10 heat rate is reduced because theadditional expander 28 power is delivered without any additional fuel flow, i.e. with the zero heat rate. - This
system 10 has the following additional (to original embodiment with acombustion turbine assembly 11;compressed air storage 18 and charging compressor 20) components: -
- The additional air expander 28
- The
heat exchanger 24 recovering thecombustion turbine 14 exhaust heat and feeding theexpander 28 BOP piping and specialties
- The overall parameters of the
system 10 are optimized based on the overall plant economics including: -
- Additional components capital and operational costs
- The combustion turbine power augmentation
- The expander 28 additional peaking power produced
-
FIG. 2 shows another embodiment of thesystem 10′ that is similar to that ofFIG. 1 , except that theadditional expander 28 expands the preheated compressed stored air from the stored air pressure to atmospheric pressure resulting in much higher power. In addition, the expander flow rate is not restricted to the injection rate allowable by a specific combustion turbine assembly. Furthermore, the air required for the injection in a combustion turbine assembly for power augmentation with specific parameters is extracted from theexpander 28 with specific parameters. - With reference to
FIG. 2 , the compressed air from thestorage 18 is directed to theheat exchanger 24 that receives heat from the source of a heat (e.g. exhaust of turbine 14). The heated air is expanded though theexpander 28 that is connected to theelectric generator 30 and produces additional power. The airflow ofexpander 28 is a subject for optimization and could be as high as a combustion turbine inlet flow. Theexpander 28 has a provision for an extracted airflow flow with parameters consistent with the requirements of the air injection technology determined by combustion turbine assembly limitations. In other words, the injection flow parameters of the injected airflow are consistent with flow parameters of themain compressor 12 at an injection point. The extracted airflow is injected via structure 33 into the combustion turbine assembly 11 (via structure 35) upstream of thecombustors 16 with a combustion turbine power augmentation of approximately 20-25%. The remaining airflow in theexpander 28 is expanded though low pressure stages to atmospheric pressure. The additional power of the expander is a subject of optimization and could be equal to a combustion turbine power. - As an example, the GE 7241 combustion turbine operating at 35 C could have gross power augmentation of approximately 38-40 MW with the extracted (from the additional expander 28) and injected airflow of approximately 12% of the combustion turbine inlet flow; the expander additional power could be as high as the combustion turbine power and is a subject for optimization.
- The use of the
expander 28 can be employed in a Combustion Turbine/Combined Cycle Power Plant. This system preferably includes the following additional (to thecombustion turbine assembly 11; compressedair storage 18 and charging compressor 20) components: -
- The
air expander 28, -
Heat exchanger 24 recovering thecombustion turbine 14 exhaust heat and feeding theexpander 28, - BOP piping and specialties
- The
- The foregoing preferred embodiments have been shown and described for the purposes of illustrating the structural and functional principles of the present invention, as well as illustrating the methods of employing the preferred embodiments and are subject to change without departing from such principles. Therefore, this invention includes all modifications encompassed within the spirit of the following claims.
Claims (19)
1. A combustion turbine power generation system comprising:
a combustion turbine assembly including a main compressor constructed and arranged to receive ambient inlet air, a main expansion turbine operatively associated with the main compressor, combustors constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator associated with the main expansion turbine for generating electric power,
a compressed air storage storing compressed air;
a heat exchanger constructed and arranged to receive a source of heat and to receive compressed air from the storage so as to heat compressed air received from the storage, and
an air expander associated with the heat exchanger and constructed and arranged to expand the heated compressed air for producing additional electric power,
wherein airflow, extracted from the expander, is injected into the combustion turbine assembly upstream of the combustors.
2. The system of claim 1 , wherein the airflow extracted and injected is exhaust airflow of the expander, with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at an injection point.
3. The system of claim 1 , wherein the airflow extracted and injected is an airflow portion from a first stage of the expander, with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at an injection point, a remaining portion of airflow being expanded through at least one second stage of the expander to atmospheric pressure.
4. The system of claim 1 , wherein the heat exchanger is constructed and arranged to receive exhaust from the main expansion turbine thereby defining the source of heat.
5. The system of claim 1 , further comprising at least one auxiliary compressor for charging the compressed air storage.
6. The system of claim 1 , further including an electric generator associated with the expander for generating the additional electric power.
7. A combustion turbine power generation system comprising:
a combustion turbine assembly including a main compressor constructed and arranged to receive ambient inlet air, a main expansion turbine operatively associated with the main compressor, combustors constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator associated with the main expansion turbine for generating electric power,
means for storing compressed air;
means, receiving a source of heat and receiving compressed air from the means for storing, for heating compressed air received from the means for storing, and
means, associated with the means for heating, for expanding the heated compressed air for producing additional electric power,
wherein airflow, extracted from the means for expanding, is injected into the combustion turbine assembly upstream of the combustors.
8. The system of claim 7 , wherein the means for expanding is an air expander.
9. The system of claim 8 , wherein the airflow extracted from the expander and injected into combustion turbine assembly is the exhaust airflow of the expander with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at an injection point.
10. The system of claim 8 , wherein the airflow extracted from the expander and injected into combustion turbine assembly is an airflow portion from a first stage of the expander, with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at an injection point, a remaining portion of airflow being expanded through at least one second stage of the expander to atmospheric pressure.
11. The system of claim 7 , wherein the means for heating is a heat exchanger constructed and arranged to receive exhaust from the main expansion turbine thereby defining the source of heat.
12. The system of claim 7 , wherein the means for storing is an underground air storage.
13. The system of claim 12 , further comprising at least one auxiliary compressor for charging the air storage.
14. The system of claim 7 , further including an electric generator associated with the expander for generating the additional electric power.
15. A method augmenting power of a combustion turbine assembly, the combustion turbine assembly including a main compressor constructed and arranged to receive ambient inlet air, a main expansion turbine operatively associated with the main compressor, combustors constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator associated with the main expansion turbine for generating electric power, the method including:
providing stored compressed air from a compressed air storage,
heating compressed air originating from the storage,
expanding the heated, compressed air in an air expander for producing additional electric power, and
extracting airflow from the expander and injecting the extracted airflow into the combustion turbine assembly upstream of the combustors.
16. The method of claim 15 , wherein the extracted and injected airflow is the exhaust airflow of the expander with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at an injection point.
17. The method of claim 15 , wherein the extracted and injected airflow is an airflow portion from a first stage of the expander, with injection flow parameters of the injected airflow being consistent with flow parameters of the main compressor at an injection point, a remaining portion of airflow being expanded though at least one second stage of the expander to atmospheric pressure.
18. The method of claim 15 , wherein the heating step includes using exhaust heat from the main expansion turbine.
19. The method of claim 15 , wherein the method includes producing the additional electric power by providing an electric generator coupled with the expander.
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
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US11/657,661 US20080178601A1 (en) | 2007-01-25 | 2007-01-25 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
EA200701014A EA200701014A1 (en) | 2007-01-25 | 2007-06-05 | IMPROVING THE POWER OF TURBINES OF INTERNAL COMBUSTION BY MEANS OF ACCUMULATING ENERGY OF COMPRESSED AIR AND ADDITIONAL DETANDER, WITH AIR FLOW REMOVAL AND ITS INLET ABOVE THE FLOW OF THE BURNING CHAMBER |
UAA200706226A UA88929C2 (en) | 2007-01-25 | 2007-06-05 | Combustion turbine power generation system (variants) and method augmenting power of a combustion turbine assembly |
CN2007101281750A CN101230799B (en) | 2007-01-25 | 2007-07-09 | Gas turbine power augmentation by expander cold exhaust injection upstream of combustor |
PCT/US2008/000433 WO2008091503A2 (en) | 2007-01-25 | 2008-01-11 | Power augmentation of combustion turbines by extraction of additional expander airflow and injection thereof upstream of combustors |
US12/076,689 US7406828B1 (en) | 2007-01-25 | 2008-03-21 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
US12/216,911 US20080272598A1 (en) | 2007-01-25 | 2008-07-11 | Power augmentation of combustion turbines with compressed air energy storage and additional expander |
US12/285,404 US7614237B2 (en) | 2007-01-25 | 2008-10-03 | CAES system with synchronous reserve power requirements |
US12/320,403 US7669423B2 (en) | 2007-01-25 | 2009-01-26 | Operating method for CAES plant using humidified air in a bottoming cycle expander |
US12/320,751 US7640643B2 (en) | 2007-01-25 | 2009-02-04 | Conversion of combined cycle power plant to compressed air energy storage power plant |
US12/582,720 US20100043437A1 (en) | 2007-01-25 | 2009-10-21 | Method of producing power by storing wind energy in the form of compressed air |
US12/632,841 US8011189B2 (en) | 2007-01-25 | 2009-12-08 | Retrofit of simple cycle gas turbine for compressed air energy storage application having expander for additional power generation |
US12/818,186 US8261552B2 (en) | 2007-01-25 | 2010-06-18 | Advanced adiabatic compressed air energy storage system |
US13/607,650 US20130232974A1 (en) | 2007-01-25 | 2012-09-07 | Advanced adiabatic compressed air energy storage system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/657,661 US20080178601A1 (en) | 2007-01-25 | 2007-01-25 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
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US12/076,689 Division US7406828B1 (en) | 2007-01-25 | 2008-03-21 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
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US20080178601A1 true US20080178601A1 (en) | 2008-07-31 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US11/657,661 Abandoned US20080178601A1 (en) | 2007-01-25 | 2007-01-25 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
US12/076,689 Expired - Fee Related US7406828B1 (en) | 2007-01-25 | 2008-03-21 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
US12/216,911 Abandoned US20080272598A1 (en) | 2007-01-25 | 2008-07-11 | Power augmentation of combustion turbines with compressed air energy storage and additional expander |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/076,689 Expired - Fee Related US7406828B1 (en) | 2007-01-25 | 2008-03-21 | Power augmentation of combustion turbines with compressed air energy storage and additional expander with airflow extraction and injection thereof upstream of combustors |
US12/216,911 Abandoned US20080272598A1 (en) | 2007-01-25 | 2008-07-11 | Power augmentation of combustion turbines with compressed air energy storage and additional expander |
Country Status (5)
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US (3) | US20080178601A1 (en) |
CN (1) | CN101230799B (en) |
EA (1) | EA200701014A1 (en) |
UA (1) | UA88929C2 (en) |
WO (1) | WO2008091503A2 (en) |
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Also Published As
Publication number | Publication date |
---|---|
WO2008091503A4 (en) | 2009-02-26 |
CN101230799A (en) | 2008-07-30 |
US7406828B1 (en) | 2008-08-05 |
CN101230799B (en) | 2010-06-02 |
US20080272598A1 (en) | 2008-11-06 |
EA010271B1 (en) | 2008-08-29 |
US20080178602A1 (en) | 2008-07-31 |
WO2008091503A3 (en) | 2009-01-08 |
WO2008091503A2 (en) | 2008-07-31 |
EA200701014A1 (en) | 2008-08-29 |
UA88929C2 (en) | 2009-12-10 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |