WO2016098949A1 - 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템 - Google Patents
액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템 Download PDFInfo
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- WO2016098949A1 WO2016098949A1 PCT/KR2015/002112 KR2015002112W WO2016098949A1 WO 2016098949 A1 WO2016098949 A1 WO 2016098949A1 KR 2015002112 W KR2015002112 W KR 2015002112W WO 2016098949 A1 WO2016098949 A1 WO 2016098949A1
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- Prior art keywords
- refrigerant
- liquid
- pressure
- pump
- evaporator
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- 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
- F01K5/00—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type
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- 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
- F03G7/05—Ocean thermal energy conversion, i.e. OTEC
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Definitions
- the present invention is to improve the efficiency of the cycle of the high-efficiency marine thermo-generation system, power generation compared to the existing marine thermo-generation system by installing a movable pump (Motive pump) in the operating part (Motive part) of the liquid-vapor ejector (Liquid-vapor ejector)
- the efficiency can be increased.
- the turbine outlet is connected to the intake of the ejector, which results in a lower turbine outlet pressure compared to the basic offshore thermoelectric generation system, thus increasing the amount of power generated.
- a larger turbine inlet and outlet pressure difference that is, increased power generation and improved system efficiency can be obtained.
- due to the increased turbine work the flow rate of the working fluid required for the same power generation amount is reduced, so that a lower amount of heat of evaporation is required, thereby miniaturizing the heat exchanger, thereby contributing to economic improvement.
- Ocean temperature difference generation is a power generation system that obtains heat of vaporization from marine surface water of high water temperature and produces electricity by utilizing condensation heat using deep ocean water with low water temperature.
- deep and surface water at a certain temperature must be secured continuously and in large quantities.
- the deep ocean water used as cooling water is infinitely available in water temperature less than 2 °C on the east coast of Korea.
- it is difficult to obtain high-temperature surface water during the year because ocean surface water temperature exceeds about 25 °C only during the summer and summer.
- thermal and nuclear power plants located on the coast of Korea, which emits millions of tons of hot water per day.
- Effluents discharged at high temperatures can be used for ocean temperature differentials to overcome and improve the limitations of climatic conditions.
- the temperature difference between surface water, which is a high heat source, and deep water, which is a low heat source is only about 25 ° C., it shows low generation efficiency compared to other power generation methods, and the commercialization stage is composed of a simple first basic cycle. It is insignificant.
- the present invention has been made to solve the above-mentioned problems, and since the working fluid is branched before the flow into the evaporator through the refrigerant circulation pump, a large amount flows into the working part of the ejector, thereby reducing the amount of evaporation heat of the evaporator.
- the present invention comprises an evaporator for converting the transferred refrigerant liquid with the surface water to be converted into refrigerant steam of high temperature and high pressure;
- a gas-liquid separator installed at the outlet of the evaporator to separate liquid and gaseous refrigerants, respectively;
- a distributor installed at the inlet of the evaporator and separating the pipe flowing into the evaporator in various directions;
- An actuating part pump for boosting the liquid refrigerant branched from the distributor or separated from the gas-liquid separator
- a liquid-vapor ejector having a process of expansion and compression by mixing a low-pressure gaseous refrigerant passing through the turbine and a high-pressure liquid state refrigerant passing through the operation unit pump;
- It relates to a high efficiency marine temperature generation system using a distributor, a liquid-vapor ejector and the operating pump comprising a; refrigerant circulation pump for boosting and circulating the refrigerant condensed in the condenser to the evaporation pressure.
- the high-efficiency marine temperature differential power generation system using the distributor, gas-liquid separator, liquid-vapor ejector and actuator pump of the present invention by adjusting the dryness at the evaporator outlet due to the installation of the gas-liquid separator It is possible to increase the system efficiency and reduce the size of the evaporator by reducing the amount of heat of evaporation while at the same time securing the refrigerant liquid to be used as the working part fluid.
- a large portion of the refrigerant liquid flowing into the evaporator is branched in various directions using the distributor for use as the working fluid of the liquid-vapor ejector, thereby reducing the amount of heat of evaporation required in the evaporator.
- the pressure of the liquid-vapor ejector inlet that is, the turbine outlet side pressure
- the turbine power output increases and contributes to an increase in system efficiency with a reduced amount of heat of evaporation.
- FIG. 1 is a process diagram showing a high efficiency marine temperature differential power generation system including a distributor, an operation part pump and a liquid-vapor ejector according to an embodiment of the present invention
- FIG. 2 is a graph illustrating a P-h diagram of a high efficiency marine temperature difference generation system including a distributor, an operation pump, and a liquid-vapor ejector according to an exemplary embodiment of the present invention.
- FIG. 3 is a process diagram showing a high-efficiency marine temperature difference generation system including a distributor, a gas-liquid separator, an eastern pump and a multi-stage liquid-vapor ejector according to an embodiment of the present invention
- Figure 4 is a graph showing the P-h diagram of a high efficiency marine temperature differential power generation system including a distributor, a gas-liquid separator, a working part pump and a multi-stage liquid-vapor ejector according to an embodiment of the present invention.
- operation unit pump 40 liquid-vapor ejector
- a liquid-vapor ejector 40 having a process of expansion and compression by mixing a low-pressure gaseous refrigerant passing through the turbine 20 and a high-pressure liquid state refrigerant passing through the operation pump 30;
- FIG. 1 is a process diagram showing a high efficiency marine temperature differential power generation system including a distributor, an operation part pump and a liquid-vapor ejector according to a first embodiment of the present invention
- Figure 2 is a high efficiency marine temperature differential power generation according to a second embodiment of the present invention
- the first embodiment of the present invention comprises an evaporator (10) for converting the transferred refrigerant liquid with the surface water to be converted into a refrigerant steam of high temperature and high pressure;
- a distributor 70 installed at the evaporator inlet 10 to separate the pipe flowing into the evaporator 10 into multiple sides;
- a turbine 20 for producing electric power using a high-pressure gaseous refrigerant transferred from the evaporator 10;
- An actuating pump (30) for boosting the refrigerant in the liquid state branched from the distributor (70);
- a liquid-vapor ejector 40 having a process of expansion and compression by mixing a low-pressure gaseous refrigerant passing through the turbine 20 and a high-pressure liquid state refrigerant passing through the operation unit pump 30;
- a condenser (50) for condensing the refrigerant by heat-exchanging the refrigerant and the deep water mixed in the liquid-vapor ejector (40); It consists of a refrigerant
- the distributor 70 branches a plurality of refrigerant liquids flowing into the evaporator in various directions for use as the working fluid of the liquid-vapor ejector 40 to reduce the amount of heat of evaporation required by the evaporator 10.
- the refrigerant liquid branched from the distributor 70 is pressurized by the operation part pump 30 to increase the pressure, the pressure of the suction part of the liquid-vapor ejector 40 can be greatly reduced, thereby reducing the turbine inlet and outlet pressure difference. This increases the amount of power produced by the turbine 20.
- the reduced heat of evaporation and the increase in the amount of generated power obtained by using the liquid-vapor ejector and the operating pump simultaneously can improve the system efficiency of this off-season power generation cycle.
- a low stage liquid-vapor ejector 41 having a process of expansion and compression by mixing a low pressure gaseous refrigerant passing through the turbine 20 and a high pressure liquid state refrigerant passing through the low stage operation pump 31;
- Figure 3 is a process diagram showing a high efficiency marine temperature differential power generation system including a distributor, a gas-liquid separator, an operating pump and a multi-stage liquid-evaporator according to a second embodiment of the present invention
- Figure 4 is a second embodiment of the present invention Ph diagram of high-efficiency marine temperature difference generation system.
- a turbine 20 for producing electric power using a high-pressure gaseous refrigerant transferred from the evaporator 10;
- a low stage operation part pump 31 for boosting the refrigerant in the liquid state branched from the distributor 70;
- a gas-liquid separator (100) for separating the liquid vapor mixed refrigerant mixed and discharged in the low stage liquid-vapor ejector (41) into a gas and a liquid refrigerant;
- a high stage operating part pump 32 for boosting
- a high stage liquid-vapor ejector 42 having; A condenser (50) for condensing the refrigerant by heat-exchanging the refrigerant and deep water mixed in the high-stage liquid-vapor ejector (42);
- the refrigerant condensed in the condenser 50 is composed of a refrigerant circulation pump (60) for boosting and circulating up to the evaporation pressure.
- the distributor 70 branches a plurality of refrigerant liquids introduced into the evaporator in various directions for use as the working fluid of the low stage liquid-vapor ejector 41 to reduce the amount of heat of evaporation required in the evaporator.
- the refrigerant liquid branched from the distributor 70 is pressurized by the low stage actuating pump 31 to increase the pressure, the pressure of the suction portion of the low stage liquid-vapor ejector 41 can be greatly reduced, so that the turbine inlet and outlet pressure can be reduced. Increasing the difference, thereby increasing the amount of power produced by the turbine (20).
- the refrigerant discharged from the high stage liquid-vapor ejector 42 is sent to the condenser 50.
- the discharge pressure of the low stage liquid-vapor ejector 41 is lowered, and the suction pressure and the turbine outlet pressure of the low stage liquid-vapor ejector 41 are reduced, thereby reducing the turbine pressure. Will generate more power.
- the reduced heat of evaporation and the increase in the amount of power generated by the simultaneous use of a multi-stage liquid-steam ejector and an actuator pump can improve the system efficiency of this off-season power generation cycle.
- the refrigerant liquid passing through the distributor 70 is delivered to the evaporator 10 through a refrigerant circulation pump, and the branched refrigerant liquid is used as an operating fluid of the liquid-vapor ejectors 40 and 41.
- the refrigerant liquid is boosted through the operation part pumps 30, 31, and 32 and is introduced into the operation part of the liquid-vapor ejector 40, 41, 42.
- the discharge part pressure of the low stage liquid-vapor ejector 41 is lowered and the suction portion of the low stage liquid-vapor ejector 41 is formed.
- the pressure and turbine outlet pressure decrease, increasing the amount of power produced by the turbine.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Sustainable Development (AREA)
- Jet Pumps And Other Pumps (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
Claims (5)
- 이송된 냉매액을 표층수와 열교환시켜 고온고압의 냉매증기로 변환 시키는 증발기(10)와;상기 증발기(10)로부터 이송된 고압의 기체상태의 냉매를 이용해 전력을 생산하는 터빈(20)과;상기 터빈(20)을 통과한 저압의 기체상태의 냉매와 작동부 펌프(30)를 통과한 고압의 액상태 냉매를 혼합시켜 팽창과 압축 과정을 가지는 액-증기 이젝터(40)와;상기 액-증기 이젝터(40)에서 혼합된 냉매와 심층수를 열교환 시켜 냉매를 응축시키는 응축기(50)와;상기 응축기(50)에서 응축된 냉매를 증발압력까지 승압 및 순환 시켜주는 냉매순환펌프(60)와;상기 냉매순환펌프(60)로부터 가압된 냉매를 상기 증발기(10) 및 작동부 펌프(30)로 각각 분배하는 분배기(70);를 포함하여 구성되는 것을 특징으로 하는 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템.
- 이송된 냉매액을 표층수와 열교환시켜 고온고압의 냉매증기로 변환 시키는 증발기(10)와;상기 증발기(10)로부터 이송된 고압의 기체상태의 냉매를 이용해 전력을 생산하는 터빈(20)과;상기 터빈(20)을 통과한 저압의 기체상태의 냉매와 저단 작동부 펌프(31)를 통과한 고압의 액상태 냉매를 혼합시켜 팽창과 압축 과정을 가지는 저단 액-증기 이젝터(41)와;상기 저단 액-증기 이젝터(41)에서 혼합된 냉매에서 액체와 기체 상태의 냉매로 각각 분리시키는 기액분리기(100)와;상기 기액분리기(100)를 통과한 냉매와, 기액분리기(100)로부터 분리된 액상태의 냉매를 가압시키는 고단 작동부 펌프(32)를 통과한 냉매가 유입되는 고단 액-증기 이젝터(42)와;상기 고단 액-증기 이젝터(42)에서 혼합된 냉매와 심층수를 열교환 시켜 냉매를 응축시키는 응축기(50)와;상기 응축기(50)에서 응축된 냉매를 증발압력까지 승압 및 순환 시켜주는 냉매순환펌프(60)와;상기 냉매순환펌프(60)로부터 가압된 냉매를 상기 증발기(10) 및 저단 작동부 펌프(31)로 각각 분배하는 분배기(70);를 포함하여 구성되는 것을 특징으로 하는 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템.
- 제 1항 또는 제2항에 있어서,상기 분배기(70)를 지난 냉매액은 냉매순환펌프를 통해 증발기(10)에 전달되며, 분지된 냉매 액은 상기 액-증기 이젝터(40,41)의 작동부 유체로 사용되는 것을 특징으로 하는 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템.
- 제 1항 또는 제2항에 있어서,냉매액이 작동부 펌프(30,31,32)를 통해 승압되어 액-증기 이젝터(40,41,42)의 작동부로 유입되는 것을 특징으로 하는 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템.
- 제2항에 있어서,상기 고단 액-증기 이젝터(42)를 추가적으로 설치함으로써 저단 액-증기 이젝터(41)의 토출부 압력이 더 낮게 형성되면서 저단 액-증기 이젝터(41)의 흡입부 압력과 터빈 출구 압력이 감소하여 터빈에서 생산하는 전력량이 증가하게 되는 것을 특징으로 하는 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016564936A JP6103418B2 (ja) | 2014-12-17 | 2015-03-05 | 液−蒸気エジェクタと作動部ポンプを適用した高効率海洋温度差発電システム{High−efficiency ocean thermal energy conversion(OTEC) applying a liquid−vapor ejector and a motive pump} |
| US14/895,280 US9957955B2 (en) | 2014-12-17 | 2015-03-05 | High efficiency ocean thermal difference power generating system using liquid-vapor ejector and motive pump |
| EP15797829.7A EP3236066B1 (en) | 2014-12-17 | 2015-03-05 | High-efficiency ocean thermal energy conversion power system using liquid-vapor ejector and motive pump |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0182509 | 2014-12-17 | ||
| KR1020140182509A KR101678829B1 (ko) | 2014-12-17 | 2014-12-17 | 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016098949A1 true WO2016098949A1 (ko) | 2016-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2015/002112 Ceased WO2016098949A1 (ko) | 2014-12-17 | 2015-03-05 | 액-증기 이젝터와 작동부 펌프를 적용한 고효율 해양온도차 발전 시스템 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9957955B2 (ko) |
| EP (1) | EP3236066B1 (ko) |
| JP (1) | JP6103418B2 (ko) |
| KR (1) | KR101678829B1 (ko) |
| WO (1) | WO2016098949A1 (ko) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101968517B1 (ko) * | 2017-09-04 | 2019-04-15 | 한국해양과학기술원 | 이젝터 결합형 증기압축식 냉방 온도차발전 듀얼시스템 |
| KR102027515B1 (ko) * | 2017-09-20 | 2019-10-01 | 한국기계연구원 | 이젝터를 이용한 증기사이클 기반의 폐열발전 열기관 및 이 열기관의 동작 방법 |
| CN110905864B (zh) * | 2019-11-01 | 2021-01-26 | 浙江大学 | 一种基于海洋温差能驱动且能定深控制的海洋剖面运动平台 |
| CN113565616A (zh) * | 2020-09-18 | 2021-10-29 | 浙江海洋大学 | 船舶柴油机结构散热装置 |
| KR102786562B1 (ko) * | 2022-07-20 | 2025-03-26 | 경희대학교 산학협력단 | 태양열에 기반한 다중 생산 시스템 |
| US20250132357A1 (en) * | 2023-10-18 | 2025-04-24 | Honeywell Uk Limited | Fuel Cell System |
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| NO335643B1 (no) * | 2013-03-21 | 2015-01-12 | Gmx Group Da | Termisk energiveksler omfattende ett eller flere medier som sirkulerer i en lukket sløyfe hvor nivåforskjellen mellom topp og bunn av sløyfen er på minimum 400 meter, samt anvendelse derav i et energisystem for kraftproduksjon eller energilagring |
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2014
- 2014-12-17 KR KR1020140182509A patent/KR101678829B1/ko active Active
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2015
- 2015-03-05 EP EP15797829.7A patent/EP3236066B1/en active Active
- 2015-03-05 WO PCT/KR2015/002112 patent/WO2016098949A1/ko not_active Ceased
- 2015-03-05 JP JP2016564936A patent/JP6103418B2/ja active Active
- 2015-03-05 US US14/895,280 patent/US9957955B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20110061844A (ko) * | 2009-12-02 | 2011-06-10 | 한국해양대학교 산학협력단 | 해수 온도차 발전 장치 |
| KR20110101754A (ko) * | 2010-03-09 | 2011-09-16 | 한국해양연구원 | 해양심층수와 발전소 배출수 혹은 표층수를 이용한 다단 사이클형 해양 온도차 발전시스템 |
| US20110289961A1 (en) * | 2010-05-29 | 2011-12-01 | Occhipinti Gasper C | Enhanced liquid pressure cycle having an ejector |
| JP2013036456A (ja) * | 2011-08-04 | 2013-02-21 | Yagumo Engineering Kk | 温度差発電装置 |
| KR101431133B1 (ko) * | 2013-05-13 | 2014-08-18 | 한국해양과학기술원 | 이젝터가 포함된 해양 온도차 발전사이클장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160341184A1 (en) | 2016-11-24 |
| US9957955B2 (en) | 2018-05-01 |
| EP3236066A4 (en) | 2018-02-14 |
| EP3236066B1 (en) | 2019-05-08 |
| EP3236066A1 (en) | 2017-10-25 |
| KR101678829B1 (ko) | 2016-11-24 |
| KR20160074037A (ko) | 2016-06-28 |
| JP6103418B2 (ja) | 2017-03-29 |
| JP2017505407A (ja) | 2017-02-16 |
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