Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids

Industry

CPC
F02C3/305

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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F02Combustion engines F02CGAS-TURBINE PLANTS AIR INTAKES FOR JET-PROPULSION PLANTS CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS F02C3/00Gas-turbine plants characterised by the use of combustion products as the working fluid

Current Industry

F02C3/305Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids

Industries

Patents Grantslast 30 patents

Information Patent Grant
Steam cooling turbine engine combustor wall
- Patent number 12,092,023
- Issue date Sep 17, 2024
- RTX Corporation
- Stephen K. Kramer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Method for regulating a turbomachine comprising a temporary power-i...
- Patent number 12,078,101
- Issue date Sep 3, 2024
- SAFRAN HELICOPTER ENGINES
- Frédéric Gaétan Pousse
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydrogen steam injected and inter-cooled turbine engine
- Patent number 12,078,104
- Issue date Sep 3, 2024
- RTX Corporation
- Neil J. Terwilliger
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Exhaust-gas treatment device for an aircraft engine
- Patent number 12,060,830
- Issue date Aug 13, 2024
- MTU Aero Engines AG
- Hermann Klingels
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Method and apparatus for improving energy efficiency in existing ga...
- Patent number 12,000,335
- Issue date Jun 4, 2024
- Ari Löytty
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Auxiliary boiler system for steam injection cycle engine
- Patent number 11,988,137
- Issue date May 21, 2024
- RTX Corporation
- Jacob C. Snyder
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Gas turbine hot air injection power augmentation utilizing compress...
- Patent number 11,976,588
- Issue date May 7, 2024
- Powerphase International, LLC
- Robert J. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Aircraft
- Patent number 11,965,462
- Issue date Apr 23, 2024
- MTU Aero Engines AG
- Hermann Klingels
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Water condition monitoring for hydrogen steam injected and inter-co...
- Patent number 11,933,217
- Issue date Mar 19, 2024
- RTX Corporation
- Edward Thomas Rocco
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Natural gas liquefaction installation arranged at the surface of an...
- Patent number 11,913,715
- Issue date Feb 27, 2024
- Technip France
- Pierre Berthelot
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Gas turbine efficiency and power augmentation improvements utilizin...
- Patent number 11,879,364
- Issue date Jan 23, 2024
- Powerphase International, LLC
- Robert J. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Turbine inlet air cooling systems with condensate water recovery
- Patent number 11,808,205
- Issue date Nov 7, 2023
- Stellar Energy Americas, Inc.
- Thomas Brady
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Method and apparatus for increasing useful energy/thrust of a gas t...
- Patent number 11,603,794
- Issue date Mar 14, 2023
- Leonard Morgensen Andersen
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Intake duct for a gas-fuelled or diesel-fuelled turbine equipped wi...
- Patent number 11,598,262
- Issue date Mar 7, 2023
- GE Energy Products France SNC
- Pierre Biehler
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Gas turbine plant
- Patent number 11,459,948
- Issue date Oct 4, 2022
- Mitsubishi Heavy Industries, Ltd.
- Hideyuki Uechi
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Systems for supplying liquid fuel emulsion to a combustion system o...
- Patent number 11,434,817
- Issue date Sep 6, 2022
- General Electric Company
- Baha Suleiman
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Device for temporarily increasing turbomachine power
- Patent number 11,378,006
- Issue date Jul 5, 2022
- SAFRAN HELICOPTER ENGINES
- Frédéric Pousse
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Gas turbine engine and methods of operating same
- Patent number 11,333,070
- Issue date May 17, 2022
- General Electric Company
- Ronald Wifling
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Intermittent injection system for a gas turbine combustor
- Patent number 11,286,866
- Issue date Mar 29, 2022
- Finno Energy Oy
- Timo Erämaa
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Air logic control for auxiliary air injection system
- Patent number 11,242,799
- Issue date Feb 8, 2022
- Powerphase International, LLC
- Robert J. Kraft
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Humid air turbine
- Patent number 11,236,676
- Issue date Feb 1, 2022
- Mitsubishi, Power, Ltd.
- Yasushi Iwai
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Systems and methods for increasing power output in a waste heat dri...
- Patent number 11,041,437
- Issue date Jun 22, 2021
- Transportation IP Holdings, LLC
- Christopher Joseph Homison
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Method of increasing the safety of a power plant, and a power plant...
- Patent number 10,890,112
- Issue date Jan 12, 2021
- Airbus Helicopters
- Michel Vialle
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Annular injection apparatus for wet compression
- Patent number 10,883,511
- Issue date Jan 5, 2021
- Korea Aerospace Research Institute
- Tae Choon Park
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Reducing the load consumed by gas turbine compressor and maximizing...
- Patent number 10,823,054
- Issue date Nov 3, 2020
- Fuad Al Mahmood
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Systems and methods for selectively augmenting power output of a ga...
- Patent number 10,801,409
- Issue date Oct 13, 2020
- Rolls-Royce North American Technologies, Inc.
- Andrew J. Eifert
- F41 - WEAPONS
Information Patent Grant
Hybrid propulsion system for a gas turbine engine including a fuel...
- Patent number 10,774,741
- Issue date Sep 15, 2020
- General Electric Company
- Mohammed El Hacin Sennoun
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Heat exchanger comprising concrete thermal energy storage elements
- Patent number 10,767,935
- Issue date Sep 8, 2020
- EnergyNest AS
- Pål G. Bergan
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Humid air turbine power, water extraction, and refrigeration cycle
- Patent number 10,731,554
- Issue date Aug 4, 2020
- University of Florida Research Foundation, Inc.
- William E. Lear
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Advanced humid air gas turbine system
- Patent number 10,641,170
- Issue date May 5, 2020
- Mitsubishi Hitachi Power Systems, Ltd.
- Yoshitaka Takahashi
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...

Patents Applicationslast 30 patents

Information Patent Application
STEAM COOLING TURBINE ENGINE COMBUSTOR WALL
- Publication number 20240309811
- Publication date Sep 19, 2024
- Stephen K. Kramer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
AUXILIARY BOILER SYSTEM FOR STEAM INJECTION CYCLE ENGINE
- Publication number 20240254915
- Publication date Aug 1, 2024
- RTX Corporation
- Jacob C. Snyder
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
SYSTEMS AND METHODS FOR MODEL-BASED CONTROL OF GAS TURBINE SYSTEM C...
- Publication number 20240167425
- Publication date May 23, 2024
- GENERAL ELECTRIC COMPANY
- Juergen Gerhard Hoffmann
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
WATER CONDITION MONITORING FOR HYDROGEN STEAM INJECTED AND INTER-CO...
- Publication number 20240026817
- Publication date Jan 25, 2024
- Raytheon Technologies Corporation
- Edward Thomas Rocco
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
CONDENSER FOR HYDROGEN STEAM INJECTED TURBINE ENGINE
- Publication number 20230366348
- Publication date Nov 16, 2023
- Raytheon Technologies Corporation
- Abbas A. Alahyari
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
HEAT ENGINE WITH STEAM SUPPLY DEVICE
- Publication number 20230366349
- Publication date Nov 16, 2023
- MTU Aero Engines AG
- Hermann Klingels
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
AIRCRAFT
- Publication number 20230286661
- Publication date Sep 14, 2023
- MTU Aero Engines AG
- Hermann Klingels
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
A PROCESS TO MINIMIZING NITROGEN OXIDES EMITTION FROM GAS TURBINE E...
- Publication number 20220389871
- Publication date Dec 8, 2022
- Fuad Al Mahmood
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
TURBINE INLET AIR COOLING SYSTEMS WITH CONDENSATE WATER RECOVERY
- Publication number 20220268204
- Publication date Aug 25, 2022
- Stellar Energy Americas, Inc.
- Thomas Brady
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
METHOD FOR REGULATING A TURBOMACHINE COMPRISING A TEMPORARY POWER-I...
- Publication number 20220106908
- Publication date Apr 7, 2022
- SAFRAN HELICOPTER ENGINES
- Frédéric Gaétan POUSSE
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
METHOD AND APPARATUS FOR INCREASING USEFUL ENERGY/THRUST OF A GAS T...
- Publication number 20220056842
- Publication date Feb 24, 2022
- Leonard Morgensen Andersen
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
GAS TURBINE PLANT
- Publication number 20210262383
- Publication date Aug 26, 2021
- Mitsubishi Heavy Industries, Ltd.
- Hideyuki UECHI
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
NATURAL GAS LIQUEFACTION INSTALLATION ARRANGED AT THE SURFACE OF AN...
- Publication number 20210123672
- Publication date Apr 29, 2021
- Technip France
- Pierre Berthelot
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
DEVICE FOR TEMPORARILY INCREASING TURBOMACHINE POWER
- Publication number 20210102491
- Publication date Apr 8, 2021
- SAFRAN HELICOPTER ENGINES
- Frédéric POUSSE
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
HIGH SPEED PROPULSION SYSTEM WITH INLET COOLING
- Publication number 20200200086
- Publication date Jun 25, 2020
- GENERAL ELECTRIC COMPANY
- Ross Hartley Kenyon
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
GAS TURBINE ENGINE AND METHODS OF OPERATING SAME
- Publication number 20200173360
- Publication date Jun 4, 2020
- GENERAL ELECTRIC COMPANY
- Ronald Wifling
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GAS TURBINE HOT AIR INJECTION POWER AUGMENTATION UTILIZING COMPRESS...
- Publication number 20190234303
- Publication date Aug 1, 2019
- PowerPHASE LLC
- Robert J. KRAFT
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
METHOD OF INCREASING THE SAFETY OF A POWER PLANT, AND A POWER PLANT...
- Publication number 20190226399
- Publication date Jul 25, 2019
- Airbus Helicopters
- Michel VIALLE
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
A METHOD FOR OPERATING A GAS TURBINE
- Publication number 20190203642
- Publication date Jul 4, 2019
- FINNO ENERGY OY
- Timo ERÄMAA
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SYSTEMS AND METHODS FOR POWER PRODUCTION INCLUDING ION TRANSPORT CO...
- Publication number 20190203643
- Publication date Jul 4, 2019
- 8 RIVERS CAPITAL, LLC
- Rodney John Allam
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
GAS TURBINE EFFICIENCY AND POWER AUGMENTATION IMPROVEMENTS UTILIZIN...
- Publication number 20190186301
- Publication date Jun 20, 2019
- PowerPHASE LLC
- Robert J. KRAFT
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Systems for Supplying Liquid Fuel to a Combustion System, in Partic...
- Publication number 20190107049
- Publication date Apr 11, 2019
- GENERAL ELECTRIC COMPANY
- Baha Suleiman
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
HUMID AIR TURBINE POWER, WATER EXTRACTION, AND REFRIGERATION CYCLE
- Publication number 20190078513
- Publication date Mar 14, 2019
- University of Florida Research Foundation, Inc.
- William E. Lear
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
TURBINE ENGINE ASSEMBLY AND METHOD OF OPERATING
- Publication number 20180179961
- Publication date Jun 28, 2018
- GENERAL ELECTRIC COMPANY
- Thomas Michael Lavertu
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
PURGING LIQUID FUEL NOZZLES AND SUPPLY TUBING WITH THE ASSISTANCE O...
- Publication number 20180142570
- Publication date May 24, 2018
- SIEMENS AKTIENGESELLSCHAFT
- James R. HEALEY
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Steam Micro Turbine Engine
- Publication number 20180080375
- Publication date Mar 22, 2018
- Jack Yajie Chen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SYSTEM AND METHOD FOR REDUCED TURBINE DEGRADATION BY CHEMICAL INJEC...
- Publication number 20180058317
- Publication date Mar 1, 2018
- GENERAL ELECTRIC COMPANY
- Jason Brian Shaffer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SYSTEMS AND METHODS FOR POWER PRODUCTION INCLUDING ION TRANSPORT CO...
- Publication number 20180058318
- Publication date Mar 1, 2018
- 8 RIVERS CAPITAL, LLC
- Rodney John Allam
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Systems and Methods for Variable Water Injection Flow Control
- Publication number 20170370286
- Publication date Dec 28, 2017
- GENERAL ELECTRIC COMPANY
- Mayur Kumar Lala
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
THERMAL ENERGY STORAGE AND HEAT EXCHANGER
- Publication number 20170363368
- Publication date Dec 21, 2017
- EnergyNest AS
- Pål G. BERGAN
- F28 - HEAT EXCHANGE IN GENERAL

Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Steam cooling turbine engine combustor wall

Method for regulating a turbomachine comprising a temporary power-i...

Hydrogen steam injected and inter-cooled turbine engine

Exhaust-gas treatment device for an aircraft engine

Method and apparatus for improving energy efficiency in existing ga...

Auxiliary boiler system for steam injection cycle engine

Gas turbine hot air injection power augmentation utilizing compress...

Aircraft

Water condition monitoring for hydrogen steam injected and inter-co...

Natural gas liquefaction installation arranged at the surface of an...

Gas turbine efficiency and power augmentation improvements utilizin...

Turbine inlet air cooling systems with condensate water recovery

Method and apparatus for increasing useful energy/thrust of a gas t...

Intake duct for a gas-fuelled or diesel-fuelled turbine equipped wi...

Gas turbine plant

Systems for supplying liquid fuel emulsion to a combustion system o...

Device for temporarily increasing turbomachine power

Gas turbine engine and methods of operating same

Intermittent injection system for a gas turbine combustor

Air logic control for auxiliary air injection system

Humid air turbine

Systems and methods for increasing power output in a waste heat dri...

Method of increasing the safety of a power plant, and a power plant...

Annular injection apparatus for wet compression

Reducing the load consumed by gas turbine compressor and maximizing...

Systems and methods for selectively augmenting power output of a ga...

Hybrid propulsion system for a gas turbine engine including a fuel...

Heat exchanger comprising concrete thermal energy storage elements

Humid air turbine power, water extraction, and refrigeration cycle

Advanced humid air gas turbine system

Patents Applicationslast 30 patents

STEAM COOLING TURBINE ENGINE COMBUSTOR WALL

AUXILIARY BOILER SYSTEM FOR STEAM INJECTION CYCLE ENGINE

SYSTEMS AND METHODS FOR MODEL-BASED CONTROL OF GAS TURBINE SYSTEM C...

WATER CONDITION MONITORING FOR HYDROGEN STEAM INJECTED AND INTER-CO...

CONDENSER FOR HYDROGEN STEAM INJECTED TURBINE ENGINE

HEAT ENGINE WITH STEAM SUPPLY DEVICE

AIRCRAFT

A PROCESS TO MINIMIZING NITROGEN OXIDES EMITTION FROM GAS TURBINE E...

TURBINE INLET AIR COOLING SYSTEMS WITH CONDENSATE WATER RECOVERY

METHOD FOR REGULATING A TURBOMACHINE COMPRISING A TEMPORARY POWER-I...

METHOD AND APPARATUS FOR INCREASING USEFUL ENERGY/THRUST OF A GAS T...

GAS TURBINE PLANT

NATURAL GAS LIQUEFACTION INSTALLATION ARRANGED AT THE SURFACE OF AN...

DEVICE FOR TEMPORARILY INCREASING TURBOMACHINE POWER

HIGH SPEED PROPULSION SYSTEM WITH INLET COOLING

GAS TURBINE ENGINE AND METHODS OF OPERATING SAME

GAS TURBINE HOT AIR INJECTION POWER AUGMENTATION UTILIZING COMPRESS...

METHOD OF INCREASING THE SAFETY OF A POWER PLANT, AND A POWER PLANT...

A METHOD FOR OPERATING A GAS TURBINE

SYSTEMS AND METHODS FOR POWER PRODUCTION INCLUDING ION TRANSPORT CO...

GAS TURBINE EFFICIENCY AND POWER AUGMENTATION IMPROVEMENTS UTILIZIN...

Systems for Supplying Liquid Fuel to a Combustion System, in Partic...

HUMID AIR TURBINE POWER, WATER EXTRACTION, AND REFRIGERATION CYCLE

TURBINE ENGINE ASSEMBLY AND METHOD OF OPERATING

PURGING LIQUID FUEL NOZZLES AND SUPPLY TUBING WITH THE ASSISTANCE O...

Steam Micro Turbine Engine

SYSTEM AND METHOD FOR REDUCED TURBINE DEGRADATION BY CHEMICAL INJEC...

SYSTEMS AND METHODS FOR POWER PRODUCTION INCLUDING ION TRANSPORT CO...

Systems and Methods for Variable Water Injection Flow Control

THERMAL ENERGY STORAGE AND HEAT EXCHANGER