F01K25/00 - CPC Classification Index

ClassID:

137123 ⎘

F01K25/00 - CPC Classification

Classification description:

Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for

Sub-classes:

F01K25/005 » {the working fluid being steam, created by combustion of hydrogen with oxygen} 61
F01K25/02 » the fluid remaining in the liquid phase 45
F01K25/04 » the fluid being in different phase, e.g. foamed 50
F01K25/06 » using mixtures of different fluids 222
F01K25/08 » using special vapours 577

Recent Application in this class:

20250084773

2025-03-13

DUAL-POWERTRAIN PUMPED HEAT ENERGY STORAGE WITH INVENTORY CONTROL AND PURGE

20240229685

2024-07-11

PRESSURE CONTROL FOR CLOSED BRAYTON CYCLES

20240218772

2024-07-04

POWER GENERATION ASSEMBLIES FOR HYDRAULIC FRACTURING SYSTEMS AND METHODS

20240159168

2024-05-16

DUAL-POWERTRAIN PUMPED HEAT ENERGY STORAGE WITH INVENTORY CONTROL AND PURGE

20240133321

2024-04-25

Pressure control for closed Brayton cycles

20220389839

2022-12-08

Pumped heat electric storage system with recirculation

20220381159

2022-12-01

SINGLE-WORKING-MEDIUM VAPOR COMBINED CYCLE

20220356819

2022-11-10

Flexible integration of stored heat and electric resources (fisher)

20220228512

2022-07-21

COMBINED CYCLE POWER DEVICE

#10

20220213817

2022-07-07

SINGLE-WORKING-MEDIUM VAPOR COMBINED CYCLE

#11

20220017803

2022-01-20

VISUALLY DISTINGUISHABLE WORKING FLUIDS

#12

20210215045

2021-07-15

Systems and methods for a piston engine including a recirculating system using supercritical carbon dioxide

#13

20210180457

2021-06-17

Adiabatic salt energy storage

#14

20210071529

2021-03-11

Systems and methods for a piston engine including a recirculating system using supercritical carbon dioxide

#15

20200347799

2020-11-05

Floating head piston assembly

#16

20200308992

2020-10-01

System, apparatus and method for managing heat transfer in power generation systems

#17

20200048519

2020-02-13

Use of (2E)-1,1,1,4,5,5,5-heptafluoro-4-(trifluoromethyl)pent-2-ene in power cycles

#18

20200040243

2020-02-06

QUASI-AZEOTROPIC COMPOSITION COMPRISING 2,3,3,3-TETRAFLUOROPROPENE AND TRANS-1,3,3,3-TETRAFLUOROPROPENE

#19

20190316846

2019-10-17

WASTE HEAT RECOVERY AND CONVERSION SYSTEM AND RELATED METHODS

#20

20190277196

2019-09-12

Energy storage device and method for storing energy

#21

20190153903

2019-05-23

Pumping apparatus

#22

20190120137

2019-04-25

Closed-loop thermal cycle expander bypass flow control

#23

20190112949

2019-04-18

Single working-medium vapor combined cycle and vapor power device for combined cycle

#24

20190024539

2019-01-24

Energy storage system

#25

20190003308

2019-01-03

Adiabatic salt energy storage

#26

20180320559

2018-11-08

Heat recovery

#27

20180274482

2018-09-27

STIRLING CYCLE MACHINE

#28

20180224224

2018-08-09

Container for a waste heat utilization circuit

#29

20180209306

2018-07-26

System and method for supplying an energy grid with energy from an intermittent renewable energy source

#30

20180187566

2018-07-05

Seal arrangement in a turbine and method for confining the operating fluid

#31

20180142577

2018-05-24

Energy storage device and method for storing energy

#32

20180038245

2018-02-08

Control system for supercritical working fluid turbomachinery

#33

20170370251

2017-12-28

Harmonic adsorption recuperative power systems and methods

#34

20170350586

2017-12-07

Boiler using liquid metal as working medium and power generation system comprising same

#35

20170314396

2017-11-02

THERMAL EXCHANGE ENGINE

#36

20170306205

2017-10-26

Use of (2E)-1,1,1,4,5,5,5-heptafluoro-4-(trifluoromethyl)pent-2-ene in power cycles

#37

20170191752

2017-07-06

Air purification units

#38

20160377303

2016-12-29

High efficiency air delivery system and method

#39

20160369821

2016-12-22

System and method for storing energy

#40

20160290154

2016-10-06

Providing power to a data center

#41

20160138757

2016-05-19

Compressed gas storage unit

#42

20160102631

2016-04-14

Thermodynamic machine

#43

20160024974

2016-01-28

PASSIVE LOW TEMPERATURE HEAT SOURCES ORGANIC WORKING FLUID POWER GENERATION METHOD

#44

20160006268

2016-01-07

Power receiving device, control method of power receiving device, and power feeding system

#45

20150337691

2015-11-26

Providing power to a data center

#46

20150292736

2015-10-15

System and method for reutilizing COfrom combusted carbonaceous material

#47

20150184614

2015-07-02

Linear cross-head bearing for stirling engine

#48

20150184547

2015-07-02

Process producing useful energy from thermal energy

#49

20150152809

2015-06-04

Annular venturi burner for stirling engine

#50

20150143806

2015-05-28

Quintuple-effect generation multi-cycle hybrid renewable energy system with integrated energy provisioning, storage facilities and amalgamated control system cross-reference to related applications

#51

20150075133

2015-03-19

GAS TURBINE ENGINE SYSTEM THAT USES ORGANIC MEDIUM

#52

20150040751

2015-02-12

Stirling cycle machine

#53

20150040565

2015-02-12

Reactor

#54

20150000280

2015-01-01

ELECTRICITY GENERATION DEVICE AND METHOD

#55

20140305125

2014-10-16

WORKING FLUID FOR RANKINE CYCLE

#56

20140238021

2014-08-28

Generator

#57

20140182282

2014-07-03

Floating rod seal for a stirling cycle machine

#58

20140174082

2014-06-26

Method of generating a high-speed airflow

#59

20140174080

2014-06-26

Hybrid trigeneration system based microgrid combined cooling, heat and power providing heating, cooling, electrical generation and energy storage using an integrated automation system for monitor, analysis and control

#60

20140102095

2014-04-17

Geothermal power generation system and method using heat exchange between working gas and molten salt

#61

20140053558

2014-02-27

HIGH EFFICIENCY THERMODYNAMIC SYSTEM

#62

20140020386

2014-01-23

Gas Recovering System

#63

20140000235

2014-01-02

Stirling cycle machine with airlock pressure regulator and burner controls

#64

20130341929

2013-12-26

Organic flash cycles for efficient power production

#65

20130283795

2013-10-31

PROCESS FOR PRODUCING ALCOHOL AND OTHER BIOPRODUCTS FROM BIOMASS EXTRACTS IN A KRAFT PULP MILL

#66

20130263596

2013-10-10

Power receiving device, control method of power receiving device, and power feeding system

#67

20130256601

2013-10-03

Integrated process for the gasification of whole crude oil in a membrane wall gasifier and power generation

#68

20130241204

2013-09-19

Air start steam engine

#69

20130239574

2013-09-19

Method for converting energy, increasing enthalpy and raising the coefficient of compressibility

#70

20130200624

2013-08-08

Generating steam from carbonaceous material

#71

20130192228

2013-08-01

Process and device for air separation and steam generation in a combined system

#72

20130192221

2013-08-01

Improving the efficiency of Stirling cycle heat machines

#73

20130187078

2013-07-25

HEAT TRANSFER COMPOSITIONS

#74

20130186597

2013-07-25

Compressed gas storage unit

#75

20130167532

2013-07-04

POWER GENERATOR AND RELATED ENGINE SYSTEMS

#76

20120272648

2012-11-01

Integrated generator cooling system

#77

20120208250

2012-08-16

Process for producing alcohol and other bioproducts from biomass extracts in a kraft pulp mill

#78

20120186672

2012-07-26

Apparatus and method for utilizing thermal energy

#79

20120102996

2012-05-03

RANKINE CYCLE INTEGRATED WITH ABSORPTION CHILLER

#80

20120007368

2012-01-12

PRESSURE REDUCTION PLANT FOR A GAS OR GAS MIXTURE

#81

20110289941

2011-12-01

BRAYTON CYCLE REGASIFICATION OF LIQUIEFIED NATURAL GAS

#82

20110265698

2011-11-03

SYSTEM AND METHOD FOR REUTILIZING CO2 FROM COMBUSTED CARBONACEOUS MATERIAL

#83

20110227347

2011-09-22

Heat engine

#84

20110131987

2011-06-09

Pendular engine

#85

20110113781

2011-05-19

System and method for secondary energy production in a compressed air energy storage system

#86

20110100011

2011-05-05

High efficiency thermodynamic system

#87

20110044794

2011-02-24

Method of controlling turbine equipment and turbine equipment

#88

20110011078

2011-01-20

Stirling cycle machine

#89

20100301614

2010-12-02

Installation and method for storing and returning electrical energy

#90

20100218500

2010-09-02

Installation and methods for storing and methods for storing and restoring electrical energy using a piston-type gas compression and expansion unit

#91

20100115946

2010-05-13

Heat engine/ heat pump using centrifugal fans

#92

20100095667

2010-04-22

Rotary steam engine

#93

20090282828

2009-11-19

Heat engine / heat pump using centrifugal fans

#94

20090211251

2009-08-27

Low-Temperature Power Plant and Process for Operating a Thermodynamic Cycle

#95

20090205329

2009-08-20

Heat engine matched to cheap heat source or sink

#96

20090145103

2009-06-11

Conversion of combined cycle power plant to compressed air energy storage power plant

#97

20080282701

2008-11-20

External combustion engine

#98

20080178594

2008-07-31

ENGINE FOR GENERATING MECHANICAL ENERGY

#99

20070107431

2007-05-17

System and method for conveying thermal energy

#100

20070074515

2007-04-05

Waste energy recovery method and waste energy recovery system

#101

20060123778

2006-06-15

Engine for generating mechanical energy

#102

20050178125

2005-08-18

Method for the utilization of energy from cyclic thermochemical processes to produce mechanical energy and plant for this purpose

#103

18644239

2025-03-25

Power machine