WO2009034548A3 - Multistage hydraulic gas compression/expansion systems and methods - Google Patents

Multistage hydraulic gas compression/expansion systems and methods Download PDF

Info

Publication number
WO2009034548A3
WO2009034548A3 PCT/IB2008/053691 IB2008053691W WO2009034548A3 WO 2009034548 A3 WO2009034548 A3 WO 2009034548A3 IB 2008053691 W IB2008053691 W IB 2008053691W WO 2009034548 A3 WO2009034548 A3 WO 2009034548A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas
compression
expansion
hydraulic
multistage
Prior art date
Application number
PCT/IB2008/053691
Other languages
French (fr)
Other versions
WO2009034548A2 (en
Inventor
Sylvain Lemofouet
Alfred Rufer
Original Assignee
Ecole Polytech
Sylvain Lemofouet
Alfred Rufer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecole Polytech, Sylvain Lemofouet, Alfred Rufer filed Critical Ecole Polytech
Priority to CN2008801121237A priority Critical patent/CN101828029B/en
Priority to US12/677,706 priority patent/US8567183B2/en
Priority to EP08807625.2A priority patent/EP2188521B1/en
Publication of WO2009034548A2 publication Critical patent/WO2009034548A2/en
Publication of WO2009034548A3 publication Critical patent/WO2009034548A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • F01B17/025—Engines using liquid air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • F01K27/005—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for by means of hydraulic motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam 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
    • F01K7/02—Steam 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 the engines being of multiple-expansion type
    • F01K7/025—Consecutive expansion in a turbine or a positive displacement engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam 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
    • F01K7/34—Steam 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 the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/36—Steam 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 the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F04F1/10—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped of multiple type, e.g. with two or more units in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H02J15/003—Systems for storing electric energy in the form of hydraulic energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H02J15/006—Systems for storing electric energy in the form of pneumatic energy, e.g. compressed air energy storage [CAES]

Abstract

Multistage hydraulic systems and methods for converting the potential energy of a pressurized gas, particularly air, into mechanical work operating in motor, and for producing compressed gas from the mechanical work of the rotating shaft (A1.1 ) when rotating when operating in compressor mode, by performing a successive expansion / compression of the said gas. Each of the systems comprises: a multistage Compression-Expansion Unit (1.3) made of several hydraulic Compression-Expansion Modules (A.3a to A.3d) having different capacity and integrating a gas / liquid separating heat exchanger (A.3.1.5) designed to convert pressure power into a hydraulic power and vice-versa, by performing an essentially isothermal compression / expansion of the gas, a single stage or multistage, direct or indirect, external forced-air Heat Exchanger (A.2) for maintaining the active liquid at ambient temperature; and a multi-circuit, multi-displacement Hydraulic Motor / Pump (A.1) for converting hydraulic power into mechanical power and vice-versa.
PCT/IB2008/053691 2007-09-13 2008-09-12 Multistage hydraulic gas compression/expansion systems and methods WO2009034548A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008801121237A CN101828029B (en) 2007-09-13 2008-09-12 Multistage hydraulic gas compression/expansion systems and methods
US12/677,706 US8567183B2 (en) 2007-09-13 2008-09-12 Multistage hydraulic gas compression/expansion systems and methods
EP08807625.2A EP2188521B1 (en) 2007-09-13 2008-09-12 Multistage hydraulic gas compression/expansion systems and methods

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IBPCT/IB2007/053700 2007-09-13
PCT/IB2007/053700 WO2009034421A1 (en) 2007-09-13 2007-09-13 A multistage hydro-pneumatic motor-compressor

Publications (2)

Publication Number Publication Date
WO2009034548A2 WO2009034548A2 (en) 2009-03-19
WO2009034548A3 true WO2009034548A3 (en) 2009-05-22

Family

ID=40451619

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/IB2007/053700 WO2009034421A1 (en) 2007-09-13 2007-09-13 A multistage hydro-pneumatic motor-compressor
PCT/IB2008/053691 WO2009034548A2 (en) 2007-09-13 2008-09-12 Multistage hydraulic gas compression/expansion systems and methods

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/053700 WO2009034421A1 (en) 2007-09-13 2007-09-13 A multistage hydro-pneumatic motor-compressor

Country Status (4)

Country Link
US (1) US8567183B2 (en)
EP (1) EP2188521B1 (en)
CN (1) CN101828029B (en)
WO (2) WO2009034421A1 (en)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8240140B2 (en) 2008-04-09 2012-08-14 Sustainx, Inc. High-efficiency energy-conversion based on fluid expansion and compression
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8225606B2 (en) 2008-04-09 2012-07-24 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8677744B2 (en) 2008-04-09 2014-03-25 SustaioX, Inc. Fluid circulation in energy storage and recovery systems
US8448433B2 (en) 2008-04-09 2013-05-28 Sustainx, Inc. Systems and methods for energy storage and recovery using gas expansion and compression
US8359856B2 (en) 2008-04-09 2013-01-29 Sustainx Inc. Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery
WO2009126784A2 (en) 2008-04-09 2009-10-15 Sustainx, Inc. Systems and methods for energy storage and recovery using compressed gas
US8474255B2 (en) 2008-04-09 2013-07-02 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8479505B2 (en) * 2008-04-09 2013-07-09 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US20100307156A1 (en) 2009-06-04 2010-12-09 Bollinger Benjamin R Systems and Methods for Improving Drivetrain Efficiency for Compressed Gas Energy Storage and Recovery Systems
US7802426B2 (en) 2008-06-09 2010-09-28 Sustainx, Inc. System and method for rapid isothermal gas expansion and compression for energy storage
US8250863B2 (en) 2008-04-09 2012-08-28 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
UY4298U (en) * 2008-09-10 2010-04-30 Armando Miguel Regusci Campomar VARIANTE OF COMPRESSED GAS ENGINE OF FREE PISTON AND PINION WITH VARIOUS STAGES OF DECOMPRESSION AND RETURN SPRING
US7963110B2 (en) 2009-03-12 2011-06-21 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage
FR2945327A1 (en) * 2009-05-07 2010-11-12 Ecoren METHOD AND EQUIPMENT FOR MECHANICAL ENERGY TRANSMISSION BY COMPRESSION AND / OR QUASI-ISOTHERMAL DETENTION OF A GAS
CA2762980A1 (en) 2009-05-22 2010-11-25 General Compression Inc. Compressor and/or expander device
US8454321B2 (en) 2009-05-22 2013-06-04 General Compression, Inc. Methods and devices for optimizing heat transfer within a compression and/or expansion device
US8104274B2 (en) 2009-06-04 2012-01-31 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
US8247915B2 (en) 2010-03-24 2012-08-21 Lightsail Energy, Inc. Energy storage system utilizing compressed gas
US8146354B2 (en) 2009-06-29 2012-04-03 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8436489B2 (en) 2009-06-29 2013-05-07 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8196395B2 (en) 2009-06-29 2012-06-12 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
CN102575520A (en) * 2009-08-17 2012-07-11 英瓦卡尔公司 Compressor
WO2011056855A1 (en) 2009-11-03 2011-05-12 Sustainx, Inc. Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
AU2010336379B2 (en) 2009-12-24 2015-10-29 General Compression Inc. System and methods for optimizing efficiency of a hydraulically actuated system
US8191362B2 (en) 2010-04-08 2012-06-05 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8171728B2 (en) 2010-04-08 2012-05-08 Sustainx, Inc. High-efficiency liquid heat exchange in compressed-gas energy storage systems
ES2616562T3 (en) 2010-04-09 2017-06-13 Daniel John Kenway System for storage and energy recovery
US9611868B2 (en) 2010-04-09 2017-04-04 Shipstone Corporation System and method for energy storage and retrieval
CN101852091A (en) * 2010-05-13 2010-10-06 石家庄中煤装备制造有限公司 Energy-saving efficient pneumatic motor
US8234863B2 (en) 2010-05-14 2012-08-07 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8495872B2 (en) 2010-08-20 2013-07-30 Sustainx, Inc. Energy storage and recovery utilizing low-pressure thermal conditioning for heat exchange with high-pressure gas
FR2965581B1 (en) * 2010-10-04 2014-05-16 Motor Development Int Sa MOTOR WITH ACTIVE CHAMBER INCLUDING MONO AND / OR ENERGY WITH COMPRESSED AIR AND / OR ADDITIONAL ENERGY
US8578708B2 (en) 2010-11-30 2013-11-12 Sustainx, Inc. Fluid-flow control in energy storage and recovery systems
DE102010053091A1 (en) * 2010-12-01 2012-06-06 Linde Aktiengesellschaft Multi-stage piston compressor
US8997475B2 (en) 2011-01-10 2015-04-07 General Compression, Inc. Compressor and expander device with pressure vessel divider baffle and piston
WO2012097215A1 (en) 2011-01-13 2012-07-19 General Compression, Inc. Systems, methods and devices for the management of heat removal within a compression and/or expansion device or system
CA2824798A1 (en) 2011-01-14 2012-07-19 General Compression, Inc. Compressed gas storage and recovery system and method of operation
US9109614B1 (en) 2011-03-04 2015-08-18 Lightsail Energy, Inc. Compressed gas energy storage system
JP5883699B2 (en) 2011-04-13 2016-03-15 株式会社半導体エネルギー研究所 Programmable LSI
WO2012158781A2 (en) 2011-05-17 2012-11-22 Sustainx, Inc. Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems
US20120297759A1 (en) * 2011-05-27 2012-11-29 Chui Wen Chiu System of power generation with under water pressure of air
US8613267B1 (en) 2011-07-19 2013-12-24 Lightsail Energy, Inc. Valve
US20130091836A1 (en) 2011-10-14 2013-04-18 Sustainx, Inc. Dead-volume management in compressed-gas energy storage and recovery systems
EP2751391A4 (en) 2011-10-18 2015-04-22 Lightsail Energy Inc Compressed gas energy storage system
US20130152568A1 (en) * 2011-12-16 2013-06-20 Jeffrey Modderno Valve activation in compressed-gas energy storage and recovery systems
US20140369857A1 (en) * 2012-01-25 2014-12-18 General Compression, Inc. Device for improved heat transfer within a compression and/or expansion system
CN104220748B (en) 2012-02-03 2017-06-06 英瓦卡尔公司 Pumping installations
DE102012003288B3 (en) 2012-02-20 2013-03-14 Iván Cyphelly Liquid piston arrangement with plate exchanger for the quasi-isothermal compression and expansion of gases
EP2836709A4 (en) * 2012-03-16 2016-03-23 Lightsail Energy Inc Compressed gas system employing hydraulic motor for energy capture
US8726629B2 (en) 2012-10-04 2014-05-20 Lightsail Energy, Inc. Compressed air energy system integrated with gas turbine
DE102013112196A1 (en) * 2013-02-18 2014-01-23 Ed. Züblin Ag Method for recovering mechanical energy from compressed gas in compressed gas reservoir, involves controlling quasi-isothermal expansion of compressed gas, to produce electrical energy from mechanical work of working machine
US20160069359A1 (en) * 2013-04-12 2016-03-10 Edward John Hummelt Pressure vessel having plurality of tubes for heat exchange
CN103334899B (en) * 2013-04-17 2015-10-21 华北电力大学 Variable pressure-resistant tandem type liquid piston device
WO2015006761A1 (en) 2013-07-12 2015-01-15 Eaton Corporation Hydraulic system for pressurization of gas with reduction of dead volume
CN103437824A (en) * 2013-08-15 2013-12-11 谢坤 Pressure balancing method and system of piston type multi-cylinder air energy drive device
US10801482B2 (en) * 2014-12-08 2020-10-13 Saudi Arabian Oil Company Multiphase production boost method and system
EP3115603B1 (en) * 2015-07-10 2019-04-17 Eichner, Dominik Device and method for the production of electrical current
US10852076B2 (en) 2015-12-22 2020-12-01 Dana Canada Corporation Segmented conformal heat exchanger
US10907845B2 (en) 2016-04-13 2021-02-02 Trane International Inc. Multi-functional heat pump apparatus
EP3807539A1 (en) 2016-05-17 2021-04-21 Enairys Powertech SA Hybrid multistage gas compression/expansion systems and methods
KR101668672B1 (en) 2016-08-01 2016-10-24 최상배 Liquid pressed gas compressor having pressure-volume converting device and torque converting device
US11560523B2 (en) 2016-10-07 2023-01-24 Sabic Global Technologies B.V. Stage and system for compressing cracked gas
CN108034465A (en) * 2017-09-22 2018-05-15 宋敏 A kind of moisture stress expansion recycles dewatering process
US20220010934A1 (en) * 2020-07-10 2022-01-13 University Of Maryland, College Park System and method for efficient isothermal compression
CN112761914A (en) * 2021-02-24 2021-05-07 李方耀 Novel heat energy utilization device and method
CN113587678B (en) * 2021-07-20 2022-05-31 北京航空航天大学 Isothermal pressurizing device and method for liquid driving and cylinder heat transfer
CN113700685B (en) * 2021-08-11 2022-07-26 大连理工大学 Bending variable-section flow channel type axial-flow air wave ejector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE170677C (en) *
US1886164A (en) * 1930-03-18 1932-11-01 Niels C Christensen Apparatus for compressing gases
US1929350A (en) * 1930-04-08 1933-10-03 Niels C Christensen Method and apparatus for compressing gases
DE19846481A1 (en) * 1998-10-09 2000-05-04 Christian Schneider Device for thermal treatment and for driving a gaseous medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121534A (en) * 1936-07-02 1938-06-21 Westinghouse Air Brake Co Fluid compressor
US4651525A (en) * 1984-11-07 1987-03-24 Cestero Luis G Piston reciprocating compressed air engine
GB9225103D0 (en) * 1992-12-01 1993-01-20 Nat Power Plc A heat engine and heat pump
JP3194047B2 (en) 1995-11-03 2001-07-30 シフェリー，イヴァン Air-oil converter for energy storage
GB2396887A (en) * 2003-01-06 2004-07-07 Thomas Tsoi Hei Ma Extended cycle reciprocating Stirling engine
DE102004046316A1 (en) * 2004-09-24 2006-03-30 Linde Ag Method and apparatus for compressing a gaseous medium
US20070101989A1 (en) * 2005-11-08 2007-05-10 Mev Technology, Inc. Apparatus and method for the conversion of thermal energy sources including solar energy
RU2007114667A (en) 2007-04-18 2008-10-27 Яков Львович Гинзбург (RU) ELECTRIC FILTER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE170677C (en) *
US1886164A (en) * 1930-03-18 1932-11-01 Niels C Christensen Apparatus for compressing gases
US1929350A (en) * 1930-04-08 1933-10-03 Niels C Christensen Method and apparatus for compressing gases
DE19846481A1 (en) * 1998-10-09 2000-05-04 Christian Schneider Device for thermal treatment and for driving a gaseous medium

Also Published As

Publication number Publication date
EP2188521A2 (en) 2010-05-26
EP2188521B1 (en) 2020-03-18
WO2009034548A2 (en) 2009-03-19
WO2009034421A1 (en) 2009-03-19
EP2188521A4 (en) 2014-08-20
CN101828029A (en) 2010-09-08
US8567183B2 (en) 2013-10-29
CN101828029B (en) 2013-12-04
US20100199652A1 (en) 2010-08-12

Similar Documents

Publication Publication Date Title
WO2009034548A3 (en) Multistage hydraulic gas compression/expansion systems and methods
US8104274B2 (en) Increased power in compressed-gas energy storage and recovery
WO2011056283A3 (en) Adiabatic compressed air energy storage system with multi-stage thermal energy storage
US8359856B2 (en) Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery
US9109511B2 (en) System and methods for optimizing efficiency of a hydraulically actuated system
US10358975B2 (en) Compressed air energy storage and power generation device
WO2011008500A3 (en) Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
WO2011008321A3 (en) Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
WO2012100094A3 (en) Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
CA2486013A1 (en) Device for utilizing the waste heat of compressors
WO2006012406A3 (en) Combined rankine and vapor compression cycles
EP1752613A3 (en) Heat energy recovery apparatus
WO2011056296A3 (en) Compressed air energy storage system with reversible compressor - expander unit and corresponding method
WO2013171333A3 (en) High efficiency power generation apparatus, refrigeration/heat pump apparatus, and method and system therefor
EP2272757A3 (en) Transcritical fluid cooling for aerospace applications
WO2011006862A3 (en) System for gas processing
EP1798498A2 (en) Vapor compression refrigerating systems
EP2718651A1 (en) Thermal energy storage and recovery arrangement
CN101871683A (en) Compressed air air-conditioner
CN101307754A (en) Multistaging gas compression device
WO2007136765A3 (en) Wind turbine system
US8297064B2 (en) Energy efficient air conditioning system
CN102071973B (en) Scroll compression-expansion compound machine for compressed air energy storage technology
WO2007136731A3 (en) Wind turbine system
EP2325579A3 (en) Heat pump

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880112123.7

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08807625

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2008807625

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 12677706

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 1854/DELNP/2010

Country of ref document: IN