RS61465B1 - Toplotni motor sa poboljšanom dekompresijom tokom organskog rankinovog ciklusa - Google Patents
Toplotni motor sa poboljšanom dekompresijom tokom organskog rankinovog ciklusaInfo
- Publication number
- RS61465B1 RS61465B1 RS20210146A RSP20210146A RS61465B1 RS 61465 B1 RS61465 B1 RS 61465B1 RS 20210146 A RS20210146 A RS 20210146A RS P20210146 A RSP20210146 A RS P20210146A RS 61465 B1 RS61465 B1 RS 61465B1
- Authority
- RS
- Serbia
- Prior art keywords
- heat engine
- rankine cycle
- organic rankine
- improved organic
- decompression heat
- Prior art date
Links
- 230000006837 decompression Effects 0.000 title 1
Classifications
-
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/04—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for the fluid being in different phases, e.g. foamed
-
- 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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/08—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with working fluid of one cycle heating the fluid in another cycle
-
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- 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
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/26—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam
- F01K3/262—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam by means of heat exchangers
-
- 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
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Reciprocating Pumps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361761115P | 2013-02-05 | 2013-02-05 | |
US201361817862P | 2013-04-30 | 2013-04-30 | |
US201361841610P | 2013-07-01 | 2013-07-01 | |
EP14749586.5A EP2954177B1 (en) | 2013-02-05 | 2014-02-05 | Improved organic rankine cycle decompression heat engine |
PCT/US2014/014965 WO2014124061A1 (en) | 2013-02-05 | 2014-02-05 | Improved organic rankine cycle decompression heat engine |
Publications (1)
Publication Number | Publication Date |
---|---|
RS61465B1 true RS61465B1 (sr) | 2021-03-31 |
Family
ID=51300117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RS20210146A RS61465B1 (sr) | 2013-02-05 | 2014-02-05 | Toplotni motor sa poboljšanom dekompresijom tokom organskog rankinovog ciklusa |
Country Status (16)
Country | Link |
---|---|
US (2) | US9745870B2 (sr) |
EP (1) | EP2954177B1 (sr) |
JP (1) | JP6502859B2 (sr) |
CA (1) | CA2900257C (sr) |
CY (1) | CY1123876T1 (sr) |
DK (1) | DK2954177T3 (sr) |
ES (1) | ES2849436T3 (sr) |
HR (1) | HRP20210222T1 (sr) |
HU (1) | HUE053566T2 (sr) |
LT (1) | LT2954177T (sr) |
PL (1) | PL2954177T3 (sr) |
PT (1) | PT2954177T (sr) |
RS (1) | RS61465B1 (sr) |
RU (1) | RU2660716C2 (sr) |
SI (1) | SI2954177T1 (sr) |
WO (1) | WO2014124061A1 (sr) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RS61465B1 (sr) | 2013-02-05 | 2021-03-31 | Heat Source Energy Corp | Toplotni motor sa poboljšanom dekompresijom tokom organskog rankinovog ciklusa |
WO2014138035A1 (en) | 2013-03-04 | 2014-09-12 | Echogen Power Systems, L.L.C. | Heat engine systems with high net power supercritical carbon dioxide circuits |
US9385574B1 (en) * | 2013-06-26 | 2016-07-05 | Ever Source Science & Technology Development Co., Ltd. | Heat transfer fluid based zero-gas-emission power generation |
ES2689924T3 (es) * | 2014-08-29 | 2018-11-16 | Siemens Aktiengesellschaft | Aerogenerador con un tren motriz |
US10570777B2 (en) | 2014-11-03 | 2020-02-25 | Echogen Power Systems, Llc | Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system |
WO2016099975A1 (en) * | 2014-12-18 | 2016-06-23 | Echogen Power Systems, L.L.C. | Passive alternator depressurization and cooling system |
CN104832967B (zh) * | 2015-04-03 | 2018-07-20 | 陈新 | 模块化组合式智能集热器系统 |
PL3303779T3 (pl) * | 2015-06-02 | 2019-09-30 | Heat Source Energy Corp. | Silniki cieplne, układy dostarczające czynnik chłodniczy pod ciśnieniem oraz sposoby pokrewne |
GB2567858B (en) | 2017-10-27 | 2022-08-03 | Spirax Sarco Ltd | Heat engine |
US10883388B2 (en) | 2018-06-27 | 2021-01-05 | Echogen Power Systems Llc | Systems and methods for generating electricity via a pumped thermal energy storage system |
WO2021001671A1 (es) * | 2019-07-01 | 2021-01-07 | La Espectativa Sa | Proceso de presurización por combinación de expansión térmica y cambios de estado súbitos |
IT201900015776A1 (it) * | 2019-09-06 | 2021-03-06 | Ivar Spa | Macchina termica configurata per realizzare cicli termici e metodo per realizzare cicli termici |
CR20220152A (es) * | 2019-09-06 | 2022-08-24 | Ivar Spa | Nuevo ciclo termodinámico con alta recuperación de energía |
IT201900015770A1 (it) * | 2019-09-06 | 2021-03-06 | Ivar Spa | Nuovo ciclo combinato seol |
US11435120B2 (en) | 2020-05-05 | 2022-09-06 | Echogen Power Systems (Delaware), Inc. | Split expansion heat pump cycle |
GB2597900B (en) * | 2020-06-11 | 2022-08-24 | Katrick Tech Limited | Heat engine and method of manufacture |
CN111810268B (zh) * | 2020-08-11 | 2024-06-07 | 四川大学 | 热端恒温导热型余热发电装置 |
KR20230117402A (ko) | 2020-12-09 | 2023-08-08 | 수퍼크리티컬 스토리지 컴퍼니, 인크. | 3 저장조 전기 열 에너지 저장 시스템 |
US11293414B1 (en) | 2021-04-02 | 2022-04-05 | Ice Thermal Harvesting, Llc | Systems and methods for generation of electrical power in an organic rankine cycle operation |
US11644015B2 (en) | 2021-04-02 | 2023-05-09 | Ice Thermal Harvesting, Llc | Systems and methods for generation of electrical power at a drilling rig |
US11592009B2 (en) | 2021-04-02 | 2023-02-28 | Ice Thermal Harvesting, Llc | Systems and methods for generation of electrical power at a drilling rig |
US11486370B2 (en) | 2021-04-02 | 2022-11-01 | Ice Thermal Harvesting, Llc | Modular mobile heat generation unit for generation of geothermal power in organic Rankine cycle operations |
US11326550B1 (en) | 2021-04-02 | 2022-05-10 | Ice Thermal Harvesting, Llc | Systems and methods utilizing gas temperature as a power source |
US11280322B1 (en) | 2021-04-02 | 2022-03-22 | Ice Thermal Harvesting, Llc | Systems for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on wellhead fluid temperature |
US11421663B1 (en) | 2021-04-02 | 2022-08-23 | Ice Thermal Harvesting, Llc | Systems and methods for generation of electrical power in an organic Rankine cycle operation |
US11480074B1 (en) | 2021-04-02 | 2022-10-25 | Ice Thermal Harvesting, Llc | Systems and methods utilizing gas temperature as a power source |
US11493029B2 (en) | 2021-04-02 | 2022-11-08 | Ice Thermal Harvesting, Llc | Systems and methods for generation of electrical power at a drilling rig |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3603087A (en) * | 1969-06-27 | 1971-09-07 | Cci Aerospace Corp | Dual fluid rankine cycle powerplant |
US4024908A (en) * | 1976-01-29 | 1977-05-24 | Milton Meckler | Solar powered heat reclamation air conditioning system |
JPS5934956B2 (ja) * | 1977-04-25 | 1984-08-25 | 日立造船株式会社 | 温水の熱回収システム等において使用せられる蒸発器 |
JPS5781105A (en) * | 1980-11-10 | 1982-05-21 | Chiyoda Chem Eng & Constr Co Ltd | Method for recovery of power from lng through rankine cycle |
JPS5815167A (ja) | 1981-07-21 | 1983-01-28 | Hitachi Ltd | 電気機器巻線の放電位置測定装置 |
JPS5815167U (ja) * | 1981-07-22 | 1983-01-29 | 株式会社東芝 | 熱駆動式冷凍装置 |
US4484446A (en) * | 1983-02-28 | 1984-11-27 | W. K. Technology, Inc. | Variable pressure power cycle and control system |
JPS6065211A (ja) * | 1983-09-21 | 1985-04-15 | Hitachi Ltd | Lνg冷熱発電設備の運転方法 |
JP2546868B2 (ja) * | 1987-12-28 | 1996-10-23 | 株式会社 日阪製作所 | 熱併給バイナリー発電装置 |
RU2169271C1 (ru) * | 1999-12-06 | 2001-06-20 | Султанов Адхам Закирович | Теплоэлектроцентраль с кольцевыми водяными, паровыми котлами |
US6598397B2 (en) * | 2001-08-10 | 2003-07-29 | Energetix Micropower Limited | Integrated micro combined heat and power system |
US6594997B2 (en) * | 2001-10-09 | 2003-07-22 | Pat Romanelli | Vapor engines utilizing closed loop fluorocarbon circuit for power generation |
US7019412B2 (en) * | 2002-04-16 | 2006-03-28 | Research Sciences, L.L.C. | Power generation methods and systems |
US7971449B2 (en) | 2004-08-14 | 2011-07-05 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University | Heat-activated heat-pump systems including integrated expander/compressor and regenerator |
JP4654655B2 (ja) * | 2004-10-19 | 2011-03-23 | 株式会社デンソー | 蒸気圧縮式冷凍機 |
GB0501630D0 (en) * | 2005-01-28 | 2005-03-02 | Thermal Energy Systems Ltd | Heat pump |
US20060236698A1 (en) | 2005-04-20 | 2006-10-26 | Langson Richard K | Waste heat recovery generator |
JP4077868B2 (ja) * | 2005-10-26 | 2008-04-23 | 松下電器産業株式会社 | 膨張機を用いたヒートポンプ応用機器 |
US7637108B1 (en) | 2006-01-19 | 2009-12-29 | Electratherm, Inc. | Power compounder |
DE102007020086B3 (de) * | 2007-04-26 | 2008-10-30 | Voith Patent Gmbh | Betriebsflüssigkeit für einen Dampfkreisprozess und Verfahren für dessen Betrieb |
EP2014880A1 (en) * | 2007-07-09 | 2009-01-14 | Universiteit Gent | An improved combined heat power system |
US20100034684A1 (en) | 2008-08-07 | 2010-02-11 | General Electric Company | Method for lubricating screw expanders and system for controlling lubrication |
US8006496B2 (en) * | 2008-09-08 | 2011-08-30 | Secco2 Engines, Inc. | Closed loop scroll expander engine |
US8713939B2 (en) | 2008-12-18 | 2014-05-06 | Mitsubishi Electric Corporation | Exhaust heat recovery system |
RU2435050C2 (ru) * | 2009-03-13 | 2011-11-27 | Общество С Ограниченной Ответственностью "Центр Кортэс" | Энергоаккумулирующая установка |
CN101614139A (zh) * | 2009-07-31 | 2009-12-30 | 王世英 | 多循环发电热力系统 |
US20110175358A1 (en) * | 2010-01-15 | 2011-07-21 | Richard Langson | One and two-stage direct gas and steam screw expander generator system (dsg) |
US20120006023A1 (en) | 2010-03-22 | 2012-01-12 | Keith Sterling Johnson | Loop thermal energy system |
US9222706B2 (en) * | 2010-03-25 | 2015-12-29 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus and operating method of same |
DE102010022408B4 (de) | 2010-06-01 | 2016-11-24 | Man Truck & Bus Ag | Verfahren und Vorrichtung zum Betrieb eines Dampfkreisprozesses mit geschmiertem Expander |
JP2012202369A (ja) * | 2011-03-28 | 2012-10-22 | Aisin Seiki Co Ltd | 蒸発器一体型熱ポンプおよびランキンサイクル装置 |
JP5592305B2 (ja) * | 2011-04-15 | 2014-09-17 | 株式会社神戸製鋼所 | 発電装置 |
US20120291433A1 (en) * | 2011-05-19 | 2012-11-22 | Ning Meng | Low temperature rankine cycle solar power system with low critical temperature hfc or hc working fluid |
JP5891614B2 (ja) * | 2011-06-27 | 2016-03-23 | 株式会社Ihi | 廃熱発電装置 |
EP2981685A1 (en) | 2013-01-28 | 2016-02-10 | Eaton Corporation | Organic rankine cycle system with lubrication circuit |
RS61465B1 (sr) | 2013-02-05 | 2021-03-31 | Heat Source Energy Corp | Toplotni motor sa poboljšanom dekompresijom tokom organskog rankinovog ciklusa |
-
2014
- 2014-02-05 RS RS20210146A patent/RS61465B1/sr unknown
- 2014-02-05 PT PT147495865T patent/PT2954177T/pt unknown
- 2014-02-05 EP EP14749586.5A patent/EP2954177B1/en active Active
- 2014-02-05 PL PL14749586T patent/PL2954177T3/pl unknown
- 2014-02-05 HU HUE14749586A patent/HUE053566T2/hu unknown
- 2014-02-05 WO PCT/US2014/014965 patent/WO2014124061A1/en active Application Filing
- 2014-02-05 SI SI201431761T patent/SI2954177T1/sl unknown
- 2014-02-05 ES ES14749586T patent/ES2849436T3/es active Active
- 2014-02-05 DK DK14749586.5T patent/DK2954177T3/da active
- 2014-02-05 RU RU2015137839A patent/RU2660716C2/ru active
- 2014-02-05 LT LTEP14749586.5T patent/LT2954177T/lt unknown
- 2014-02-05 US US14/765,735 patent/US9745870B2/en active Active
- 2014-02-05 JP JP2015556257A patent/JP6502859B2/ja active Active
- 2014-02-05 CA CA2900257A patent/CA2900257C/en active Active
-
2017
- 2017-07-25 US US15/658,705 patent/US10400635B2/en active Active
-
2021
- 2021-02-02 CY CY20211100090T patent/CY1123876T1/el unknown
- 2021-02-09 HR HRP20210222TT patent/HRP20210222T1/hr unknown
Also Published As
Publication number | Publication date |
---|---|
ES2849436T3 (es) | 2021-08-18 |
RU2015137839A (ru) | 2017-03-10 |
HRP20210222T1 (hr) | 2021-03-19 |
EP2954177A4 (en) | 2016-11-16 |
LT2954177T (lt) | 2021-02-25 |
US10400635B2 (en) | 2019-09-03 |
HUE053566T2 (hu) | 2021-07-28 |
US20150369086A1 (en) | 2015-12-24 |
JP2016513201A (ja) | 2016-05-12 |
DK2954177T3 (da) | 2021-02-15 |
WO2014124061A1 (en) | 2014-08-14 |
US9745870B2 (en) | 2017-08-29 |
CA2900257C (en) | 2020-10-06 |
PT2954177T (pt) | 2021-02-15 |
US20170335724A1 (en) | 2017-11-23 |
EP2954177A1 (en) | 2015-12-16 |
EP2954177B1 (en) | 2021-01-13 |
RU2660716C2 (ru) | 2018-07-09 |
CA2900257A1 (en) | 2014-08-14 |
PL2954177T3 (pl) | 2021-05-31 |
JP6502859B2 (ja) | 2019-04-17 |
SI2954177T1 (sl) | 2021-04-30 |
CY1123876T1 (el) | 2022-05-27 |
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