CN208236588U - It is a kind of to utilize solar energy and the concatenated association circulating power generation system of geothermal energy - Google Patents
It is a kind of to utilize solar energy and the concatenated association circulating power generation system of geothermal energy Download PDFInfo
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- CN208236588U CN208236588U CN201820772966.0U CN201820772966U CN208236588U CN 208236588 U CN208236588 U CN 208236588U CN 201820772966 U CN201820772966 U CN 201820772966U CN 208236588 U CN208236588 U CN 208236588U
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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
- Y02E10/10—Geothermal energy
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Abstract
This application involves renewable resource technical field of power generation more particularly to a kind of utilization solar energy and the concatenated association circulating power generation system of geothermal energy.The association circulating power generation system, including water circulation system, the organic working medium circulatory system, the first generator and the second generator；Water circulation system includes water-flow circuit and the sun concentrating collector, back pressure turbine and the evaporator that are set in turn on water-flow circuit, wherein back pressure turbine is connected with first generator；The organic working medium circulatory system includes organic working medium closed circuit and the preheater, evaporator and the ORC turbine that are set in turn in organic working medium closed circuit, wherein underground heat water loop, ORC turbine and the connection of the second generator are provided in preheater.Association circulating power generation system provided by the present application connects solar energy and geothermal energy, is effectively utilized geothermal energy and the power generation of steam exhausted spare heat, improves the simple thermal efficiency for utilizing solar light-heat power-generation.
Description
Technical field
This application involves renewable resource technical field of power generation more particularly to a kind of utilization solar energy and geothermal energy are concatenated
Association circulating power generation system.
Background technique
Mainly there are thermoelectricity, water power and three kinds of nuclear power in the source of existing electric power energy.Thermoelectricity needs the fossils such as coal, petroleum to fire
Material, causes the reserves of fossil fuel fewer and fewer, faces exhausted danger, and combustion of fossil fuel can destroy earth environment；
Water power needs to build the hidden danger that reservoir has avalanche, it is also possible to destroy ecological environment, and the water resource of country is always limited；Core
Electricity is no doubt clean under normal circumstances, but just in case nuclear leakage occurs, consequence is equally fearful.Therefore, the source of electric power energy
Now gradually develop to new energy field.
There are mainly two types of the new energy found at present, first is that solar energy, second is that fuel cell.In addition, wind-power electricity generation can also
Complementary new energy at last.Wherein, optimal new energy is solar energy.Solar power generation mainly has photo-thermal power generation and photovoltaic
Generate electricity two kinds of forms, and wherein photo-thermal power generation is that electric energy, energy utilization rate ratio are converted heat into according to heating power Rankine cycle
Photovoltaic power generation is high, and equipment is not necessarily to refine heavy metal or silicon during manufacture, and pollution is few, so the following solar power generation will be with
Based on photo-thermal form.
Existing solar light-heat power-generation system generally comprises waterworks, solar energy heat collector, steam turbine, generator
And condenser, water supply, which enters after solar energy heat collector to be heated, is converted to superheated steam, and superheated steam does work in steam turbine,
Drive electrical power generators.
But solar light-heat power-generation has certain requirement to the total radiation intensity of solar energy, poor for solar energy resources
Area is not suitable for carrying out solar light-heat power-generation, can individually use solar light-heat power-generation, thermoelectricity using area for solar energy
Transformation efficiency is low.If solar energy combined with other renewable resources, association circulating power generation system is formed, power generation can be improved
The thermal efficiency.
Utility model content
Solar energy and the concatenated association circulating power generation system of geothermal energy are utilized this application provides a kind of, to solve individually to adopt
It is low with the thermal efficiency of solar light-heat power-generation, the big problem of the cold source energy of heating power Rankine cycle.
It is a kind of to utilize solar energy and the concatenated association circulating power generation system of geothermal energy, including water circulation system, organic working medium
The circulatory system, the first generator and the second generator；
The water circulation system includes water-flow circuit and the sun optically focused collection that is set in turn on the water-flow circuit
Hot device, back pressure turbine and evaporator, wherein the back pressure turbine is connected with first generator；
The organic working medium circulatory system includes that organic working medium closed circuit is recycled with the organic working medium is set in turn in
Preheater, the evaporator and ORC turbine on circuit, wherein underground heat water loop, the ORC are provided in the preheater
Turbine is connected with second generator.
Optionally, it is additionally provided between the evaporator on the water-flow circuit and the sun concentrating collector solidifying
Bear water pump.
Optionally, feed pump is additionally provided between the condensate pump and the sun concentrating collector.
Optionally, oxygen-eliminating device is additionally provided between the condensate pump and the feed pump.
Optionally, it the ORC turbine in the organic working medium closed circuit and is additionally provided between the preheater cold
Condenser.
Optionally, chilled(cooling) water return (CWR) is provided in the condenser.
Optionally, organic working medium circulating pump is additionally provided between the condenser and the preheater.
Optionally, the organic working medium in the organic working medium closed circuit is R245fa.
The technical scheme provided by the application includes following advantageous effects:
A kind of utilization solar energy and the concatenated association circulating power generation system of geothermal energy provided by the present application, will utilize solar energy
Power generation and geother-mal power generation are organically combined by series connection, are gone here and there using GEOTHERMAL WATER and turbine discharge to organic working medium
Join step heating, the conventional cold source energy of heating power Rankine cycle is recycled, the heat of association circulating power generation system is improved
Efficiency.Specifically, water supply is changed into overheat after water-flow circuit to sun concentrating collector heating and steams in water circulation system
Vapour, superheated steam do work in steam turbine along water-flow circuit to back pressure turbine, drive the first electrical power generators；It is organic
In duplex matter system, GEOTHERMAL WATER of the organic working medium in organic working medium closed circuit to preheater, preheater is by heat transfer
Level-one heating is carried out to it to organic working medium, then organic working medium to evaporator, is done work in evaporator by back pressure turbine
Steam discharge later further heats, and the organic working medium by level-one, second level heating to ORC turbine is done work in ORC turbine, band
Dynamic second electrical power generators；Meanwhile the organic working medium exhaust of the steam discharge and ORC turbine of back pressure turbine can be cooled, and continue
It repeats to do work along respective circulation loop.To sum up, association circulating power generation system provided by the present application, is adequately utilized ground
Thermal energy, and the refrigerating loss of heating power Rankine cycle is reduced, improve the thermal efficiency of the circulatory system.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is provided by the embodiments of the present application a kind of to utilize solar energy and the concatenated association circulating power generation system of geothermal energy
Structural schematic diagram.
Description of symbols: 1, water circulation system；2, the organic working medium circulatory system；3, the first generator；4, the second power generation
Machine；5, water-flow circuit；6, sun concentrating collector；7, back pressure turbine；8, evaporator；9, organic working medium closed circuit；
10, preheater；11, ORC turbine；12, underground heat water loop；13, condensate pump；14, feed pump；15, oxygen-eliminating device；16, condenser；
17, chilled(cooling) water return (CWR)；18, organic working medium circulating pump.
Specific embodiment
Attached drawing 1 is please referred to, the figure shows provided by the embodiments of the present application a kind of concatenated using solar energy and geothermal energy
The structural schematic diagram of association circulating power generation system.
It is a kind of to utilize solar energy and the concatenated association circulating power generation system of geothermal energy, including water circulation system 1, organic working medium
The circulatory system 2, the first generator 3 and the second generator 4.
Water supply is converted to steam by solar light-heat power-generation, the exactly amount of utilizing solar radiation, and steam is in steam turbine
Acting drives electrical power generators.
The water circulation system 1 of the embodiment of the present application setting is similar with the principle of solar light-heat power-generation, is all to utilize the sun
Radiations heat energy water heating is converted into superheated steam, drive the power generation of the first generator 3；But the embodiment of the present application is not limited only to benefit
The organic working medium circulatory system 2 is additionally provided with while being provided with water circulation system 1 with solar light-heat power-generation.
Geothermal energy is not only utilized in the organic working medium circulatory system 2, also to the heat of turbine discharge in water circulation system 1 into
It has gone utilization, has been to be recycled to heating power Rankine cycle routine cold source energy.Specifically, organic working medium is in organic working medium
It can be carried out level-one heating first with underground heat in the circulatory system 2, the heat of turbine discharge recycled to carry out second level to organic working medium
Heating, keeps the temperature of organic working medium higher, and organic working medium is done work in ORC turbine drives the power generation of the second generator 4.
The water circulation system 1 includes water-flow circuit 5 and the sun optically focused being set in turn on the water-flow circuit 5
Heat collector 6, back pressure turbine 7 and evaporator 8, wherein the back pressure turbine 7 and first generator 3 connection.
Such as Fig. 1, water heating is converted into steam acting using the heat of sunlight and drives electrical power generators, necessarily there is one
On condition that setting water-flow circuit 5 makes water-vapor iterative motion inside it；In water-flow circuit 5, water before this with
For the state motion of liquid to sun concentrating collector 6, the solar radiation heat that sun concentrating collector 6 is assembled adds water
Heat converts water to superheated steam, in general, the temperature of superheated steam can reach 360 DEG C -370 DEG C, pressure then be can reach
3.6MPa.Then, superheated steam does work in back pressure turbine 7, drives the power generation of the first generator 3；Row after steam acting
Vapour can be discharged from back pressure turbine 7, into evaporator 8.
The organic working medium circulatory system 2 includes organic working medium closed circuit 9 and is set in turn in the organic working medium and follows
Preheater 10, the evaporator 8 and ORC turbine 11 in loop back path 9, wherein be provided with GEOTHERMAL WATER in the preheater 10 and return
Road 12, the ORC turbine 11 and second generator 4 connection.
Such as Fig. 1, similarly, organic working medium closed circuit 9 will necessarily be also arranged in the organic working medium circulatory system 2, make organic working medium
Iterative motion inside it.It is tentatively heated specifically, organic working medium first passes through preheater 10, makes the temperature of organic working medium
Degree increases；Later, it is preliminarily heated organic working medium and moves to evaporator 8, by the row of back pressure turbine 7 in evaporator 8
Vapour carries out reheating to organic working medium, and after two-stage laser heating, organic working medium moves to ORC turbine 11, in ORC turbine
Acting in 11 drives the power generation of the second generator 4.Wherein, ORC turbine 11 is used to realize using low-boiling-point organic compound as the organic of working medium
Rankine cycle (Organic Rankine Cycle, abbreviation ORC) enters its internal mechanical expansion work, to drive generator
Power generation.
The water circulation system 1 of the embodiment of the present application takes full advantage of solar energy；The organic working medium circulatory system 2 to geothermal energy this
Kind renewable resource is also used, and the thermal energy of turbine discharge after acting in water circulation system 1 is utilized, and reduces heat
The cold source energy of power Rankine cycle recycles it.Association circulating power generation system provided by the embodiments of the present application, in conjunction with
Solar energy and geothermal energy, make full use of this renewable energy of geothermal energy, improve the heat of cycle generating system
Efficiency alleviates the demand pressure of remaining electric power energy, while being also made that contribution for environmental protection.
Optionally, it is also set up between the evaporator 8 and the sun concentrating collector 6 on the water-flow circuit 5
There is condensate pump 13.
After superheated steam does work in back pressure turbine 7, the meeting steam discharge of back pressure turbine 7, this part steam discharge be will continue to
It is moved along water-flow circuit 5, participates in acting, power generation next time.Therebetween, it needs that steam discharge is condensed into liquid by condensate pump 13
State water and the supplement water being newly added are admitted to sun concentrating collector together, are converted into superheated steam in back pressure turbine
Acting participates in power generation in 7, so realizes circulating generation.
Optionally, feed pump 14 is additionally provided between the condensate pump 13 and the sun concentrating collector 6.
Such as Fig. 1, feed pump 14, which is used to convey after the water to come is pressurizeed from condensate pump 13, is sent into sun optically focused collection
Hot device 6.
Optionally, oxygen-eliminating device 15 is additionally provided between the condensate pump 13 and the feed pump 14.
Such as Fig. 1, the effect of oxygen-eliminating device 15 mainly removes the oxygen dissolved in water supply, guarantees the quality of water supply, follow to water
The normal operation and raising equipment heat-transfer effect of loop system 1 are all helpful.
Such as Fig. 1, in water circulation system 1, after 15 deoxygenation of oxygen-eliminating device, feed pump 14 is sent into too after water supply is boosted for water supply
Positive concentrating collector 6, water supply absorb solar heat energy in sun concentrating collector 6 and are converted to superheated steam, superheated steam fortune
It moves to doing work in back pressure turbine 7, back pressure turbine 7 drives the power generation of the first generator 3, back pressure turbine 7 after acting
Steam discharge, steam discharge become condensed water after the heat exchange of evaporator 8, are sent into oxygen-eliminating device 15 by condensate pump 13, the water after deoxygenation is by water supply
Enter sun concentrating collector 6 after 14 boosting of pump, then is circuited sequentially along water-flow circuit 5.
Optionally, it is also set up between the ORC turbine 11 and the preheater 10 in the organic working medium closed circuit 9
There is condenser 16.
Organic working medium exhaust is cooling through condenser 16, will become the organic work of liquid after the gaseous organic matter for finishing function cooling
Then matter restarts to recycle.
Optionally, chilled(cooling) water return (CWR) 17 is provided in the condenser 16.
Such as Fig. 1, the embodiment of the present application condenser 16 is interior to give organic working medium to cool down using chilled(cooling) water return (CWR) 17.The application is implemented
Coolant water temperature in example chilled(cooling) water return (CWR) 17 is generally 25 DEG C -30 DEG C or so, and organic working medium temperature after cooling can be reduced to 30
℃-35℃。
Optionally, organic working medium circulating pump 18 is additionally provided between the condenser 16 and the preheater 10.
As feed pump 14 above-mentioned, the effect of organic working medium circulating pump 18 is in organic working medium closed circuit 9
Organic working medium increases power, and organic working medium is sent to the preheater 10 and evaporator set gradually after organic working medium circulating pump 18
8。
Such as Fig. 1, in the organic working medium circulatory system 2, organic working medium is sent to preheater 10 through organic working medium circulating pump 18, preheating
The GEOTHERMAL WATER in underground heat water loop 12 inside device 10 transfers thermal energy to organic working medium, is tentatively heated to organic working medium,
Organic working medium after heated moves to evaporator 8, and 7 steam discharge of back pressure turbine stored in evaporator 8 passes its thermal energy
Organic working medium is passed, second level heating is carried out to organic working medium and becomes high temperature organic working medium, later, the movement of high temperature organic working medium
It does work in ORC turbine 11, drives the power generation of the second generator 4.
Optionally, the organic working medium in the organic working medium closed circuit 9 is R245fa.
R245fa belongs to HFC class organic working medium, and normal boiling point is 15.45 DEG C, critical pressure: 3.65Mpa, critical-temperature:
154℃.It is to ozone layer almost without damage capability, while its greenhouse effects are also especially low, will not cause to bear to environmental protection
Face is rung.
In the embodiment of the present application, specifically, the R245fa into organic working medium closed circuit 9 is liquid, pressure is about
For 0.2Mpa, temperature is 30 DEG C -35 DEG C；Above-mentioned liquid R245fa is pressurized to 3Mpa by organic working medium circulating pump 18, later in advance
Hot device 10 carries out level-one heating to liquid R245fa, this process is real by the underground heat water loop 12 being arranged inside preheater 10
Existing.Underground heat water loop 12 takes full advantage of geothermal energy and heats to organic working medium, in general, the liquid R245fa of 3Mpa is passed through
The heating of 100 DEG C -110 DEG C of GEOTHERMAL WATER in preheater 10 is crossed, the temperature of liquid R245fa can rise to 80 DEG C -90 DEG C；80℃-
90 DEG C of liquid R245fa is entered back into evaporator 8, is carried out second level to organic working medium gas using 7 steam discharge of back pressure turbine and is added
Heat, liquid R245fa can be converted into high-pressure gaseous R245fa during this, and temperature can rise to 130 DEG C -140 DEG C by 80 DEG C -90 DEG C,
130 DEG C -140 DEG C of R245fa gas expansion work in ORC turbine 11 drives electrical power generators.
Recurrent state of the R245fa described in above-mentioned the embodiment of the present application in the circulatory system is only a kind of specific example,
Association circulating power generation system can also realize other reasonable recurrent states, with no restriction to this embodiment of the present application.
It is provided by the embodiments of the present application to be passed through using solar energy with the concatenated association circulating power generation system of geothermal energy, organic working medium
After crossing second level heating, its pressure and temperature is higher, and the combined cycle generation thermal efficiency is higher.
A kind of utilization solar energy and the concatenated association circulating power generation system of geothermal energy provided by the present application, will utilize solar energy
Power generation and geother-mal power generation combine by series connection, are carried out using geothermal energy and turbine discharge to organic working medium
Step of connecting heats, and recycles to the conventional cold source energy of heating power Rankine cycle, improves association circulating power generation system
The thermal efficiency.Specifically, water supply is changed into overheat after water-flow circuit to sun concentrating collector heating and steams in water circulation system
Vapour, superheated steam do work in steam turbine along water-flow circuit to back pressure turbine, drive the first electrical power generators；It is organic
In duplex matter system, GEOTHERMAL WATER of the organic working medium in organic working medium closed circuit to preheater, preheater is by heat transfer
Level-one heating is carried out to it to organic working medium, then organic working medium to evaporator, is done work in evaporator by back pressure turbine
Final vacuum further heat, the organic working medium heated by level-one, second level is done work in ORC turbine to ORC turbine, is driven
Second electrical power generators；Meanwhile the steam discharge of back pressure turbine and the organic working medium steam discharge of ORC turbine can be cooled, and continue edge
Respective circulation loop repeats to do work.To sum up, association circulating power generation system provided by the present application, is adequately utilized underground heat
Can, and the refrigerating loss of heating power Rankine cycle is reduced, improve the thermal efficiency of the circulatory system.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that including the article of a series of elements or equipment not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
It should be understood that the application is not limited to the content for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.Scope of the present application is only limited by the accompanying claims.
Claims (8)
1. a kind of utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that including water circulation system
(1), the organic working medium circulatory system (2), the first generator (3) and the second generator (4)；
The water circulation system (1) includes that water-flow circuit (5) and the sun being set in turn on the water-flow circuit (5) are poly-
Light heat collector (6), back pressure turbine (7) and evaporator (8), wherein the back pressure turbine (7) and first power generation
Machine (3) connection；
The organic working medium circulatory system (2) includes organic working medium closed circuit (9) and is set in turn in the organic working medium and follows
Preheater (10), the evaporator (8) and ORC turbine (11) in loop back path (9), wherein setting in the preheater (10)
Have underground heat water loop (12), the ORC turbine (11) and second generator (4) connection.
2. according to claim 1 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Condensate pump is additionally provided between the evaporator (8) and the sun concentrating collector (6) on the water-flow circuit (5)
(13)。
3. according to claim 2 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Feed pump (14) are additionally provided between the condensate pump (13) and the sun concentrating collector (6).
4. according to claim 3 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Oxygen-eliminating device (15) are additionally provided between the condensate pump (13) and the feed pump (14).
5. according to claim 1 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Condenser is additionally provided between the ORC turbine (11) and the preheater (10) on the organic working medium closed circuit (9)
(16)。
6. according to claim 5 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Chilled(cooling) water return (CWR) (17) are provided in the condenser (16).
7. according to claim 5 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Organic working medium circulating pump (18) are additionally provided between the condenser (16) and the preheater (10).
8. according to claim 1 utilize solar energy and the concatenated association circulating power generation system of geothermal energy, which is characterized in that
Organic working medium in the organic working medium closed circuit (9) is R245fa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820772966.0U CN208236588U (en) | 2018-05-23 | 2018-05-23 | It is a kind of to utilize solar energy and the concatenated association circulating power generation system of geothermal energy |
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