CN201301785Y - High-efficiency ocean thermal energy power-generation device - Google Patents

High-efficiency ocean thermal energy power-generation device Download PDF

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Publication number
CN201301785Y
CN201301785Y CNU2008200608676U CN200820060867U CN201301785Y CN 201301785 Y CN201301785 Y CN 201301785Y CN U2008200608676 U CNU2008200608676 U CN U2008200608676U CN 200820060867 U CN200820060867 U CN 200820060867U CN 201301785 Y CN201301785 Y CN 201301785Y
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CN
China
Prior art keywords
seawater
solar
degasser
thermal energy
pond
Prior art date
Application number
CNU2008200608676U
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Chinese (zh)
Inventor
章学来
施敏敏
王文国
杨鹏程
于树轩
Original Assignee
上海海事大学
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Priority to CNU2008200608676U priority Critical patent/CN201301785Y/en
Application granted granted Critical
Publication of CN201301785Y publication Critical patent/CN201301785Y/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/10Solar heat collectors using working fluids the working fluids forming pools or ponds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The utility model discloses a high-efficiency ocean thermal energy power-generation device. When in working, warm seawater is pumped by a warm water pump, passes a solar pond, and is heated by solar radiation; the heated seawater enters a degasser to carry out degassing, enters a flash evaporator to carry out flash evaporation, and then enters a focusing-type solar thermal collector to be continuously heated; superheated steam enters a steam turbine to apply work in an expansion manner, the cold seawater is pumped by a cold seawater pump into a condenser, and the heated cold seawater flows back into the sea to continuously carry out circulation. The power-generation device is suitable for coastal cities and towns, islands and marine projects, and can achieve the effects of saving electrical energy and making full use of marine resources.

Description

Efficient ocean thermal energy electricity generating device
Technical field:
The utility model relates to a kind of device that utilizes power generation with marine energy, particularly a kind of hybrid electricity generating device that utilizes ocean thermal gradients to carry out efficient power generation.
Background technique:
The energy is that human society exists and the material base that develops, and ocean energy then is the important component part of new energy, is the great renewable energy sourcess of a kind of reserves.Thermal gradient energy of sea water is a kind of important ocean energy, and is renewable, cleanliness without any pollution, and reserves are abundant.It is meant the energy of the difference of water temperature between sea surface seawater and the deep sea water.Utilize this temperature difference can realize thermodynamic cycle and generating.Hybrid thermal gradient energy of sea water power generation system combines the common advantage of closed cycle and open cycle, both can generate electricity, and can produce fresh water again, can also carry out various comprehensive utilizations, and development prospect is very wide.
At present, can be divided into three kinds of different systems be closed circulation, open cycle and hybrid circulation in ocean thermal energy conversion.
Closed circulatory system utilizes lower boiling working fluid as medium.Its working principle is: when warm sea water pump is smoked warm seawater, and its thermal source is conducted to the working fluid in the vaporizer, and make its evaporation.Working fluid after evaporation adiabatic expansion in turbo machine promotes the blade of turbo machine with this and reaches the purpose of generating.The energy conversion efficiency of closed circulatory system is about 3.3~3.5%.If the energy consumption of deduction pump, then net efficiency is about 2.1~2.3%.
The open cycle system directly uses warm seawater.Earlier warm seawater is imported the vaporizer of vacuum state, make its part evaporation.Water vapour carries out adiabatic expansion in low-pressure turbine, finish after the merit, promptly introduces condenser, becomes liquid by the Mare Frigoris water cooling.The energy conversion efficiency of open system is high, but the installed capacity of generating is less, not too is suitable for a large amount of generatings.
The warm seawater of hybrid system is earlier through the flash vessel evaporation, makes wherein that a part changes water vapour into, imports second vaporizer (combined equipment of a kind of vaporizer and condenser) with being about to steam.Water vapour is cooled at this, and discharges potential, and this potential is again with lower boiling working fluid evaporation.This system can avoid warm seawater to biological attachment that heat exchanger produced.
Generally speaking, current ocean thermal energy power generation system efficient is on the low side, the cost of investment height, so the novel sea thermal gradient energy power generation system that the thermal efficiency is higher, capacity is bigger, volume is littler, investment is lower is all actively being developed in countries in the world.
The model utility content:
The problem that the utility model is low at the existing efficient of the above-mentioned various systems that utilize ocean thermal gradients to generate electricity, cost is high, and a kind of environmental protection, high efficiency combined type ocean thermal energy conversion device are provided.
In order to obtain above-mentioned purpose, the technical solution adopted in the utility model:
Efficient ocean thermal energy electricity generating device, this device comprises solar pond, degasser, flashed vapour, vaporizer, solar thermal collector, turbogenerator and condenser; Described solar pond heats warm seawater by solar radiation, and the seawater after the intensification is sent in the degasser and outgased, and the seawater after the degassing enters flash vessel to carry out low pressure flash and be divided into concentrated seawater and flashed vapour, and this concentrated seawater flows out; The while flashed vapour enters vaporizer and liquid working substance carries out the condensation exchange, flashed vapour is liquefied as fresh water and recycles, liquid working substance after the heating is again through solar thermal collector heating vaporization, and enter turbogenerator acting generating, working medium after the acting is by condenser condenses, and it is recycling to send into vaporizer again.
Described solar pond is to hold brine pit, and it comprises thermal insulation layer and storage thermosphere; Described thermal insulation layer is the clear water that holds the brine pit surface; Described storage thermosphere is to hold the denseer or saturated saline solution of brine pit bottom, is arranged to the good black of heat absorption capacity at the bottom of the pond simultaneously; Described temperature seawater is introduced in the pond by warm water pump and is sent in the degasser after the storage thermosphere heating by the bottom.
Described degasser has three paths, and seawer inlet connects solar pond, sucks the seawater after the solar pond heating, and gas is emitted by the gas outlet on degasser top, and warm seawater enters flash vessel by the seawer outlet of degasser bottom.
Described flash vessel comprises warm seawer inlet, flash steam outlet and concentrated seawater outlet; Described temperature seawer inlet is connected by pipeline with the degasser seawer outlet, and the flash steam outlet is positioned at the flash vessel top, is connected with evaporator by pipeline, and the concentrated seawater outlet is positioned at the flash vessel bottom and feeds in the sea.
Described vaporizer, solar thermal collector, turbogenerator and condenser connect to form a circulatory system successively, and realize the mutual conversion of energy by liquid working substance.
Also a thermal accumulator can be set on the described solar thermal collector, this thermal accumulator adopts heat pipe intensified heat transfer, and with high-efficiency thermal storage material heat accumulation.
Described condenser extracts Mare Frigoris water by water supply pump the working medium through it is carried out condensation, and condensed working medium is pumped into vaporizer by working fluid.
The utility model that obtains according to technique scheme makes the temperature of warm seawater be improved earlier by adopting solar pond and solar concentrating collector, improve the cycle fluid cold ﹠ heat source temperature difference, thereby improve systemic circulation efficient, practical efficiency can reach about 12%, promotes its practicability; Device also will increase thermal accumulator on the basis of solar thermal collector simultaneously, daytime is by utilizing solar thermal collector hot machine working medium is heated and carrying out accumulation of heat by phase-change material, when night, solar heat was not enough, the heat that calls the heat-accumulating material storage replenishes heat transfer, effectively to raise the efficiency.
The utility model is recycling to ocean thermal energy and solar energy, be applicable to coast town, island and marine engineering, it has not only effectively improved generating efficiency, has also made full use of rich natural resource, as desalination of sea water, refrigeration air-conditioner, sea-farming or the like; The clear energy sources that is adopted can not pollute environment, has wide potential application prospect.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a schematic representation of the present utility model.
Fig. 2 is the schematic representation of solar pond in the utility model.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Efficient ocean thermal energy electricity generating device provided by the utility model, it adopts the hybrid circulatory system, forms in conjunction with the open cycle transformation on the basis of closed cycle, both can generate electricity, and can produce fresh water again, has both the advantage of open cycle and closed cycle.This device utilizes solar pond that warm seawater is heated, and utilizes solar concentrating collector to improve its working medium temperature, thereby improves generating efficiency.
Based on above-mentioned principle, the utility model specific implementation can be referring to Fig. 1,
Whole device mainly is made up of solar pond 3, degasser 4, flashed vapour 5, vaporizer 6, solar thermal collector 7, turbine 8, generator 9 and condenser 10.
Referring to shown in Figure 2, this solar pond 3 is to hold brine pit, and it comprises thermal insulation layer 301 and storage thermosphere 302; The thermal insulation layer 301 here is for holding the clear water on brine pit surface, and storage thermosphere 302 is arranged to the good black of heat absorption capacity at the bottom of the pond simultaneously for holding the denseer or saturated saline solution of brine pit bottom; Such solar pond can be good at absorbing the heat energy of solar radiation, and stores so that carry out heat treated.
Temperature seawater 1 is introduced in the pond by warm water pump 2 and is sent into the processing that outgases in the degasser 4 after storage thermosphere 302 heating by the bottom; Degasser 4 is provided with three paths, and seawer inlet 401 connects solar pond 3, sucks the seawater after the solar pond heating, and gas is emitted by the gas outlet 402 on degasser top, and the warm seawater after the degassing enters flash vessel 5 by the seawer outlet 403 of degasser bottom.
This flash vessel 5 comprises warm seawer inlet 501, flash steam outlet 502 and concentrated seawater outlet 503; Temperature seawer inlet 501 and degasser seawer outlet 403 are connected by pipeline, and flash steam outlet 502 is positioned at the flash vessel top, are connected with vaporizer 6 imports by pipeline, and concentrated seawater exports 503 and is positioned at flash vessel bottom feeding nautical mile; Warm seawater after the degassing enters flash vessel 5 and carries out low pressure flash, be divided into flashed vapour and concentrated seawater, the concentrated seawater outlet 503 of these concentrated seawater flash vessel 5 bottoms flows into the sea, and the while flashed vapour enters vaporizer 6 by the flash steam outlet 502 that is positioned at flash vessel 5 tops and carries out the condensation exchange with liquid working substance.
Vaporizer 6 connects to form a cycle generating system successively with solar thermal collector 7, turbo machine 8, generator 9 and condenser 10, and it realizes the mutual conversion of energy by liquid working substance; When flashed vapour enters vaporizer 6, carry out the condensation exchange with cold liquid working substance, flashed vapour is liquefied as fresh water and recycles; Liquid working substance flow into solar thermal collector 7 absorb enough heats in vaporizer 6 after, and solar thermal collector 7 utilizes the solar thermal energy of collecting that the liquid working substance that flows through it is carried out double heating, makes its vaporization; The working medium of vaporization enters turbo machine 8 again, becomes the mechanical energy pushing turbine to drive generator 9 acting generatings thermal power transfer; Working medium after the acting enters into condenser 10 again and carries out condensation process, and this condenser 10 is drawn into Mare Frigoris water by water supply pump 11 and working medium is carried out heat exchange, makes its condensation; Condensed working medium is sent into vaporizer 6 heat exchange once more by working fluid pump 12 again, carries out recycling; The working fluid pump 12 here provides motive force for the liquid working substance periodic duty.By the cycle operation process of above-mentioned efficient ocean thermal energy electricity generating device, constantly ocean thermal energy is converted into electric energy and produces fresh water, reach the purpose of efficiently utilizing ocean thermal energy.
Said apparatus, it mainly is to adopt solar pond and solar concentrating collector to make the temperature of warm seawater be improved earlier, improves the cycle fluid cold ﹠ heat source temperature difference, thereby improves systemic circulation efficient, practical efficiency can reach about 12%, promotes its practicability.This device also will increase thermal accumulator on the basis of solar thermal collector, this thermal accumulator adopts heat pipe intensified heat transfer, and with high-efficiency thermal storage material heat accumulation; Daytime is by utilizing solar thermal collector hot machine working medium is heated and carrying out accumulation of heat by phase-change material, when night, solar heat was not enough, calls the heat that heat-accumulating material stores and replenishes heat transfer, effectively to raise the efficiency.
Based on above-mentioned principle and technology, the utility model is specifically implemented as follows:
1. about 20-25 ℃ of saturated liquid refrigerant sent in the solar pond 3 by working medium pump 2 pressurizations.Heating by solar energy makes working medium rise to 30-50 ℃ of pairing evaporating pressure, still keeps liquid.
2. working medium enters flash vessel 5 by degasser 4, carries out low pressure flash.Flash steam enters vaporizer 6 condensing heat-exchanges, and remaining concentrated seawater is got back to and continued circulation in the sea.
3. the liquid refrigerant that flows out from vaporizer 6 enters solar thermal collector 7, further is heated.Heating through solar thermal collector becomes 60-80 ℃ overheated gas.Still be its 30-50 ℃ of pairing evaporating pressure owing to enter into solar thermal collector 7 power pressures, adopt solar concentrating collector the further overheated working medium temperature that improves of working medium.
4. the Working medium gas that flows out from solar thermal collector 7 enters turbine 8, promotes turbine 8 acting output powers, and this power can be converted into electric power output or directly output by generator 9.Be still overheated gas through turbine 8 back working medium, the evaporating pressure of correspondence when pressure is reduced to 6-12 ℃, temperature also is reduced to below 6 ℃ simultaneously.
5. the gaseous working medium of being discharged by turbine 8 enters in the condenser 10, is condensed into 6-12 ℃ saturated solution by the bathypelagic seawater.About about 5 ℃ of bathypelagic seawater is taken from below the 500-800 rice of sea level.Bathypelagic Mare Frigoris hydromining extracts more than the sea level through the thermoinsulation material pipeline with sea water pump 11.According to law of connected vessels, the power that sea water pump consumed is just in order to keep flow required kinetic energy and overcome frictional loss of deep sea water in pipeline.
6. the working medium that flows out from condenser 10 is sent into the vaporizer 6 by working medium pump 12 pressurizations, thereby finishes cyclic process, the electric power output of implement device.The needed electric power of whole circulation process can be fully self be provided by device, and additional power output is arranged, thus generating that can implement device.
The utility model recycling by to ocean thermal energy and solar energy not only effectively improved generating efficiency as from the foregoing, also made full use of rich natural resource, as desalination of sea water, refrigeration air-conditioner, sea-farming or the like.The clear energy sources that is adopted can not pollute environment, has wide potential application prospect.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (7)

1, efficient ocean thermal energy electricity generating device, this device comprises solar pond, degasser, flashed vapour, vaporizer, solar thermal collector, turbogenerator and condenser; It is characterized in that described solar pond heats warm seawater by solar radiation, the seawater after the intensification is sent in the degasser and is outgased, and the seawater after the degassing enters flash vessel to carry out low pressure flash and be divided into concentrated seawater and flashed vapour, and this concentrated seawater flows out; The while flashed vapour enters vaporizer and liquid working substance carries out the condensation exchange, flashed vapour is liquefied as fresh water and recycles, liquid working substance after the heating is again through solar thermal collector heating vaporization, and enter turbogenerator acting generating, working medium after the acting is by condenser condenses, and it is recycling to send into vaporizer again.
2, efficient ocean thermal energy electricity generating device according to claim 1 is characterized in that, described solar pond is to hold brine pit, and it comprises thermal insulation layer and storage thermosphere; Described thermal insulation layer is the clear water that holds the brine pit surface; Described storage thermosphere is to hold the denseer or saturated saline solution of brine pit bottom, is arranged to the good black of heat absorption capacity at the bottom of the pond simultaneously; Described temperature seawater is introduced in the pond by warm water pump and is sent in the degasser after the storage thermosphere heating by the bottom.
3, efficient ocean thermal energy electricity generating device according to claim 1, it is characterized in that, described degasser has three paths, seawer inlet connects solar pond, the seawater of suction after the solar pond heating, gas is emitted by the gas outlet on degasser top, and warm seawater enters flash vessel by the seawer outlet of degasser bottom.
4, efficient ocean thermal energy electricity generating device according to claim 1 is characterized in that, described flash vessel comprises warm seawer inlet, flash steam outlet and concentrated seawater outlet; Described temperature seawer inlet is connected by pipeline with the degasser seawer outlet, and the flash steam outlet is positioned at the flash vessel top, is connected with evaporator by pipeline, and the concentrated seawater outlet is positioned at the flash vessel bottom and feeds in the sea.
5, efficient ocean thermal energy electricity generating device according to claim 1 is characterized in that described vaporizer, solar thermal collector, turbogenerator and condenser connect to form a circulatory system successively, and realizes the mutual conversion of energy by liquid working substance.
6, efficient according to claim 1 or 5 ocean thermal energy electricity generating device is characterized in that also a thermal accumulator can be set on the described solar thermal collector, this thermal accumulator adopts heat pipe intensified heat transfer, and with high-efficiency thermal storage material heat accumulation.
7, efficient ocean thermal energy electricity generating device according to claim 5 is characterized in that, described condenser extracts Mare Frigoris water by water supply pump the working medium through it is carried out condensation, and condensed working medium is pumped into vaporizer by working fluid.
CNU2008200608676U 2008-11-05 2008-11-05 High-efficiency ocean thermal energy power-generation device CN201301785Y (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102080635A (en) * 2010-03-09 2011-06-01 上海海事大学 Device for generating electricity by using solar energy and ground heat and using method thereof
CN102338051A (en) * 2010-07-27 2012-02-01 嘉兴市中道能源设备科技有限公司 Solar/ground source heat integrated electricity generation/cold/heating co-supply device
CN101737282B (en) * 2008-11-05 2012-05-23 上海海事大学 High-efficiency hybrid ocean temperature difference power generating system
CN102844566A (en) * 2010-01-21 2012-12-26 阿贝尔基金会 Ocean thermal energy conversion power plant
US9086057B2 (en) 2010-01-21 2015-07-21 The Abell Foundation, Inc. Ocean thermal energy conversion cold water pipe
US9151279B2 (en) 2011-08-15 2015-10-06 The Abell Foundation, Inc. Ocean thermal energy conversion power plant cold water pipe connection
CN106949002A (en) * 2017-04-06 2017-07-14 华北电力大学 A kind of new water-electricity cogeneration ocean energy utilization system
WO2017190505A1 (en) * 2016-05-06 2017-11-09 中国矿业大学 Heat pump-reinforced salt-concentration-differential power generation device using vapour differential pressure energy method under positive temperature difference
US10184457B2 (en) 2010-01-21 2019-01-22 The Abell Foundation, Inc. Ocean thermal energy conversion plant
US10619944B2 (en) 2012-10-16 2020-04-14 The Abell Foundation, Inc. Heat exchanger including manifold
CN111075674A (en) * 2020-01-02 2020-04-28 义乌初晨新能源科技有限公司 Device for ocean thermoelectric generation

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101737282B (en) * 2008-11-05 2012-05-23 上海海事大学 High-efficiency hybrid ocean temperature difference power generating system
US9797386B2 (en) 2010-01-21 2017-10-24 The Abell Foundation, Inc. Ocean thermal energy conversion power plant
US10844848B2 (en) 2010-01-21 2020-11-24 The Abell Foundation, Inc. Ocean thermal energy conversion power plant
CN102844566A (en) * 2010-01-21 2012-12-26 阿贝尔基金会 Ocean thermal energy conversion power plant
US9086057B2 (en) 2010-01-21 2015-07-21 The Abell Foundation, Inc. Ocean thermal energy conversion cold water pipe
US10184457B2 (en) 2010-01-21 2019-01-22 The Abell Foundation, Inc. Ocean thermal energy conversion plant
CN102844566B (en) * 2010-01-21 2015-12-02 阿贝尔基金会 ocean thermal energy conversion power plant
CN102080635A (en) * 2010-03-09 2011-06-01 上海海事大学 Device for generating electricity by using solar energy and ground heat and using method thereof
CN102338051A (en) * 2010-07-27 2012-02-01 嘉兴市中道能源设备科技有限公司 Solar/ground source heat integrated electricity generation/cold/heating co-supply device
US9909571B2 (en) 2011-08-15 2018-03-06 The Abell Foundation, Inc. Ocean thermal energy conversion power plant cold water pipe connection
US9151279B2 (en) 2011-08-15 2015-10-06 The Abell Foundation, Inc. Ocean thermal energy conversion power plant cold water pipe connection
US10619944B2 (en) 2012-10-16 2020-04-14 The Abell Foundation, Inc. Heat exchanger including manifold
WO2017190505A1 (en) * 2016-05-06 2017-11-09 中国矿业大学 Heat pump-reinforced salt-concentration-differential power generation device using vapour differential pressure energy method under positive temperature difference
CN106949002A (en) * 2017-04-06 2017-07-14 华北电力大学 A kind of new water-electricity cogeneration ocean energy utilization system
CN111075674A (en) * 2020-01-02 2020-04-28 义乌初晨新能源科技有限公司 Device for ocean thermoelectric generation
CN111075674B (en) * 2020-01-02 2021-02-02 深圳新能电力开发设计院有限公司 Device for ocean thermoelectric generation

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Granted publication date: 20090902

Termination date: 20091207