CN113864142A - Geothermal energy, waste heat and photo-thermal coupling power generation system - Google Patents
Geothermal energy, waste heat and photo-thermal coupling power generation system Download PDFInfo
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- CN113864142A CN113864142A CN202111021761.1A CN202111021761A CN113864142A CN 113864142 A CN113864142 A CN 113864142A CN 202111021761 A CN202111021761 A CN 202111021761A CN 113864142 A CN113864142 A CN 113864142A
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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
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
- F03G6/067—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- 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
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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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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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
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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
Abstract
The invention discloses a geothermal and waste heat and photothermal coupling power generation system, which comprises a power generation heat source and an ORC power generation system; a circulating heat exchange loop is formed between the ORC power generation system and a power generation heat source; the heat exchange is carried out between the internal circulation working medium of the power generation heat source and the internal circulation working medium of the ORC power generation system through a circulation heat exchange loop; generating power by the ORC power generation device in the ORC power generation system through the exchanged heat; the ORC power generation device comprises an evaporator and a preheater, and the evaporator and the preheater are arranged in series; the evaporator and the preheater are arranged on a circulating heat exchange loop. The geothermal and waste heat and photothermal coupled power generation system provided by the invention can effectively achieve the effect of fully and sustainably utilizing medium and low temperature photothermal, geothermal and waste heat resources.
Description
Technical Field
The invention relates to the field of geothermal and waste heat and photothermal coupling power generation.
Background
The organic Rankine cycle power generation device can obtain higher vapor pressure under the low temperature condition (80-300 ℃) by utilizing the low boiling point characteristic of organic working media (such as R134a, R245fa and the like), push an expansion machine to work, and drive a generator to generate power, so that the conversion from low-grade heat energy to high-grade electric energy is realized; solar energy is greatly influenced by climate and day and night, and the power generation is extremely inconstant. Therefore, energy storage devices must be provided, which not only increases the technical difficulties but also increases the cost. Although various battery energy storage systems are manufactured at present, the manufacturing cost is high, and the battery treatment brings the problem of environmental pollution. Through the mode that geothermol power and waste heat cooperate the coupling with light and heat respectively, reach low and medium temperature's abundant sustainable use.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a geothermal and waste heat and photothermal coupling power generation system which can effectively achieve the effect of fully and sustainably utilizing medium and low temperature photothermal, geothermal and waste heat resources.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
a geothermal and waste heat and photothermal coupling power generation system comprises a power generation heat source and an ORC power generation system; a circulating heat exchange loop is formed between the ORC power generation system and a power generation heat source; the heat exchange is carried out between the internal circulation working medium of the power generation heat source and the internal circulation working medium of the ORC power generation system through a circulation heat exchange loop; generating power by the ORC power generation device in the ORC power generation system through the exchanged heat; the ORC power generation device comprises an evaporator and a preheater, and the evaporator and the preheater are arranged in series; the evaporator and the preheater are arranged on a circulating heat exchange loop.
Further, the power generation heat source comprises a photothermal evaporation system and a geothermal system; the photothermal evaporation system and the geothermal system exchange heat through an evaporator and a preheater respectively; and the geothermal water outlet well of the geothermal system is communicated and circulated with the geothermal recharging well of the geothermal system through a preheater.
Further, the power generation heat source comprises a photo-thermal evaporation system and a waste heat system; the photothermal evaporation system and the waste heat system respectively exchange heat through the evaporator and the preheater or respectively exchange heat through the preheater and the evaporator, and the waste heat source input of the waste heat system corresponds to the waste heat source return communication circulation through the preheater or the evaporator and the waste heat system.
Further, the heat source of the waste heat system can be hot water, steam and a process fluid medium.
Further, the photo-thermal evaporation system comprises a photo-thermal collector, a heat storage device and a pump; the outlet of the photo-thermal collector is respectively communicated with the heat storage device and the inlet of the evaporator, and is provided with a first regulating valve and a second regulating valve; the outlet of the heat storage device is communicated with the inlet of the evaporator and is provided with a third stop valve; the outlet of the evaporator is respectively communicated with the photo-thermal collector and the inlet of the heat storage device through a pump, and is correspondingly provided with a first stop valve and a second stop valve; an expansion tank is arranged between the evaporator and the pump; the heat storage medium in the heat storage device can be hot molten salt, solid rock/cement, heat conduction oil and water.
Furthermore, the heat collection temperature of the photo-thermal heat collector is higher than n, and the distribution regulating valve at the outlet of the heat storage device regulates the distributed heat conduction oil to flow out of the heat storage device; the heat collection temperature of the photo-thermal heat collector is lower than n, and the distribution regulating valve at the outlet of the heat storage device regulates the distributed water to flow out of the heat storage device.
Furthermore, the ORC power generation device also comprises a turbine, a generator, a condenser and a working medium pump; the outlet of the evaporator is sequentially connected with a turbine, a condenser and a working medium pump in series to the inlet of the preheater for circulation; a turbine valve is arranged between the evaporator and the turbine; the turbine is driven by a generator.
Further, the outlet of the evaporator is communicated with the condenser through a turbine bypass valve, and the bypass valve is connected with the turbine valve in parallel.
Further, the condenser can adopt an air-cooled, water-cooled or evaporative cooling condensing heat exchanger.
Further, the system also comprises a heat regenerator; the heat regenerator is arranged between the turbine and the condenser in series, and the outlet of the working medium pump is communicated with the heat regenerator; and the circulating working medium flowing out of the working medium pump returns to flow through the heat regenerator and then flows into the preheater.
Has the advantages that: the power generation heat source can improve the evaporation temperature and the evaporation pressure of the ORC power generation device, improve the coupling power generation efficiency of photo-thermal and geothermal (or waste heat), and has high economic benefit; the heat storage device of the photo-thermal evaporation system can enable the heat collected by the photo-thermal collector to continuously heat the evaporator, so that the system generates stable power, and the discontinuity of photo-thermal power generation is effectively avoided; the preheating system provides heat for the preheater of the ORC power generation device, so that the evaporation temperature of the ORC power generation device can be further increased, and the thermoelectric conversion efficiency is improved. The turbine bypass mode enables the organic Rankine cycle power generation device to keep running of the organic Rankine cycle under the condition that no electric power is output, preheating and heat cooling of an evaporation system are continuously completed, and stability of the whole system is further guaranteed.
Drawings
FIG. 1 is a structural diagram of a geothermal and optothermal coupling power generation system;
FIG. 2 is a schematic diagram of a regenerator of a geothermal and optothermal coupling power generation system;
FIG. 3 is a structural diagram of a waste heat and photo-thermal coupling photo-thermal evaporation system matched with an evaporator;
FIG. 4 is a schematic diagram of a regenerator of a power generation system with a waste heat and photo-thermal coupling photo-thermal evaporation system matched with an evaporator;
FIG. 5 is a structural diagram of a preheater matched with a waste heat and photothermal coupling photo-thermal evaporation system;
FIG. 6 is a heat regenerator structure diagram of a power generation system with a preheater matched with a waste heat and photo-thermal coupling photo-thermal evaporation system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figures 1-6: a geothermal and waste heat and photothermal coupling power generation system comprises a power generation heat source and an ORC power generation system; a circulating heat exchange loop is formed between the ORC power generation system and a power generation heat source; the heat exchange is carried out between the internal circulation working medium of the power generation heat source and the internal circulation working medium of the ORC power generation system through a circulation heat exchange loop; generating power by the ORC power generation device in the ORC power generation system through the exchanged heat; the ORC power generation device comprises an evaporator 2 and a preheater 1, wherein the evaporator 2 and the preheater 1 are arranged in series; the evaporator 2 and the preheater 1 are positioned on a circulating heat exchange loop. Thereby achieving the full sustainable utilization of the medium-low temperature heat source.
The power generation heat source comprises a photo-thermal evaporation system and a geothermal system; the photothermal evaporation system and the geothermal system respectively exchange heat through the evaporator 2 and the preheater 1; and a geothermal water outlet well 7 of the geothermal system is communicated with a geothermal recharging well 8 of the geothermal system through a preheater 1 for circulation.
The power generation heat source comprises a photo-thermal evaporation system and a waste heat system; the photothermal evaporation system and the waste heat system respectively exchange heat through the evaporator 2 and the preheater 1 or the photothermal evaporation system and the waste heat system respectively exchange heat through the preheater 1 and the evaporator, and the waste heat source input 71 of the waste heat system correspondingly returns to 81 communicated circulation through the waste heat source of the preheater 1 or the evaporator 2 and the waste heat system.
The heat source of the waste heat system can be hot water, steam and a process fluid medium; the waste heat source is well utilized.
The first embodiment: when the photo-thermal and the geothermal are coupled, the photo-thermal evaporation system is connected with the evaporator;
second embodiment: when the photo-thermal and the waste heat are coupled, the photo-thermal evaporation system is connected with the evaporator, and the same as the first embodiment is as follows:
the photo-thermal evaporation system comprises a photo-thermal heat collector 10, a heat storage device 11 and a pump 9; the outlet of the photo-thermal collector 10 is respectively communicated with the heat storage device 11 and the inlet of the evaporator 2, and is provided with a first regulating valve 16 and a second regulating valve 17; the outlet of the heat storage device 11 is communicated with the inlet of the evaporator 2 and is provided with a third stop valve 18; the outlet of the evaporator 2 is respectively communicated with the inlets of the photo-thermal heat collector 10 and the heat storage device 11 through a pump 9, and is correspondingly provided with a first stop valve 14 and a second stop valve 15; an expansion tank 19 is arranged between the evaporator 2 and the pump 9; the expansion tank is used for mainly maintaining the pressure stability of pipelines and equipment in the photo-thermal preheating system and preventing the pressure in the system from suddenly changing due to the volume expansion caused by temperature change; the heat storage medium in the heat storage device 11 can be hot molten salt, solid rock/cement, heat conducting oil and water.
The third embodiment: when the photo-thermal and the waste heat are coupled, the photo-thermal evaporation system is connected with the preheater, and then the outlet of the photo-thermal collector 10 is respectively communicated with the heat storage device 11 and the inlet of the preheater 1, and is provided with a first regulating valve 16 and a second regulating valve 17; the outlet of the heat storage device 11 is communicated with the inlet of the preheater 1 and is provided with a third stop valve 18; an outlet of the preheater 1 is respectively communicated with inlets of the photo-thermal heat collector 10 and the heat storage device 11 through a pump 9, and a first stop valve 14 and a second stop valve 15 are correspondingly arranged; an expansion tank 19 is arranged between the preheater 1 and the pump 9.
The heat collection temperature of the photo-thermal heat collector 10 is higher than n, and the distribution regulating valve at the outlet of the heat storage device 11 regulates the distributed heat conduction oil to flow out of the heat storage device 11; the heat collection temperature of the photo-thermal heat collector 10 is lower than n, and the distribution regulating valve at the outlet of the heat storage device 11 regulates the distributed water to flow out of the heat storage device 11. The flow of heat conducting oil (or water) is distributed by utilizing a distribution regulating valve, so that the heat storage device stores enough heat to meet the condition of insufficient light and heat caused by night or climate; when the photo-thermal evaporation system is coupled with terrestrial heat for power generation, heat conduction oil is adopted when the heat collection temperature is higher than 150 ℃, water is adopted when the heat collection temperature is lower than 150 ℃, and n is 150 degrees; when the photo-thermal evaporation system is coupled with the waste heat system, heat conduction oil is adopted when the heat collection temperature is higher than 100 ℃, aqueous medium circulation is adopted when the heat collection temperature is lower than 100 ℃, and n is 100 ℃.
The ORC power generation device also comprises a turbine 3, a generator 4, a condenser 5 and a working medium pump 6; the outlet of the evaporator 2 is sequentially connected with a turbine 3, a condenser 5 and a working medium pump 6 in series to the inlet of the preheater 1 for circulation; a turbine valve 12 is arranged between the evaporator 2 and the turbine 3; the turbine 3 is driven by a generator 4.
The evaporator 2 is connected to the condenser 5 via a turbine bypass valve 13, the bypass valve 13 being connected in parallel to the turbine valve 12. The opening and closing of the turbine valve and the turbine bypass valve in the ORC power generation device can realize the switching of the bypass/turbine power generation modes of the ORC power generation device. When the turbine bypass valve is closed and the turbine valve is opened, the ORC power generation device enters a turbine power generation mode, the turbine-generator starts to work and outputs electric power; when the turbine bypass valve is opened and the turbine valve is closed, the ORC power generation device enters a bypass mode, the organic working medium passes through the turbine-generator and does not output electric power any more, but the heat of the photothermal evaporation system and the geothermal preheating system can be continuously cooled, and the stable operation of the system is ensured. The condenser 5 can adopt an air cooling, water cooling or evaporative cooling condensing heat exchanger.
Also included is regenerator 20; the heat regenerator 20 is arranged between the turbine 3 and the condenser 5 in series, and the outlet of the working medium pump 6 is communicated with the heat regenerator 20; and the circulating working medium flowing out of the working medium pump 6 flows back to the heat regenerator 20 and then flows into the preheater 1. The heat regenerator further improves the generating efficiency of the photo-thermal and geothermal coupling generating system.
The power generation heat source can improve the evaporation temperature and the evaporation pressure of the ORC power generation device, the coupling power generation efficiency of photo-heat and terrestrial heat or waste heat and photo-heat is improved, and the economic benefit is high; the heat storage device of the photo-thermal evaporation system can enable the heat collected by the photo-thermal collector to continuously heat the evaporator or the preheater, so that the system generates stable power, and the discontinuity of photo-thermal power generation is effectively avoided; the preheating system provides heat for a preheater of the ORC power generation device, so that the evaporation temperature of the ORC power generation device can be further increased, and the thermoelectric conversion efficiency is improved; the turbine bypass mode enables the organic Rankine cycle power generation device to keep running of the organic Rankine cycle under the condition that no electric power is output, preheating and heat cooling of an evaporation system are continuously completed, and stability of the whole system is further guaranteed.
The foregoing is a preferred embodiment of the present invention and, with respect to those skilled in the art, numerous changes and modifications can be made without departing from the principles of the invention and such changes and modifications are to be considered within the scope of the invention.
Claims (10)
1. The utility model provides a geothermol power and waste heat and light and heat coupling power generation system which characterized in that: comprises a power generation heat source and an ORC power generation system; a circulating heat exchange loop is formed between the ORC power generation system and a power generation heat source; the heat exchange is carried out between the internal circulation working medium of the power generation heat source and the internal circulation working medium of the ORC power generation system through a circulation heat exchange loop; generating power by the ORC power generation device in the ORC power generation system through the exchanged heat; the ORC power generation device comprises an evaporator (2) and a preheater (1), and the evaporator (2) and the preheater (1) are arranged in series; the evaporator (2) and the preheater (1) are arranged on a circulating heat exchange loop.
2. The system of claim 1, wherein the system comprises: the power generation heat source comprises a photo-thermal evaporation system and a geothermal system; the photothermal evaporation system and the geothermal system respectively exchange heat through the evaporator (2) and the preheater (1); and the geothermal water outlet well (7) of the geothermal system is communicated with the geothermal recharging well (8) of the geothermal system for circulation through the preheater (1).
3. The system of claim 1, wherein the system comprises: the power generation heat source comprises a photo-thermal evaporation system and a waste heat system; the photothermal evaporation system and the waste heat system respectively exchange heat through the evaporator (2) and the preheater (1) or the photothermal evaporation system and the waste heat system respectively exchange heat through the preheater (1) and the evaporator, and the waste heat source input (71) of the waste heat system correspondingly returns to the (81) communication circulation through the preheater (1) or the evaporator (2) and the waste heat source of the waste heat system.
4. The system of claim 3, wherein the system comprises: the heat source of the waste heat system can be hot water, steam and a process fluid medium.
5. A geothermal and waste heat and photothermal coupling power generation system according to claim 2 or 3, wherein: the photo-thermal evaporation system comprises a photo-thermal collector (10), a heat storage device (11) and a pump (9); the outlet of the photo-thermal collector (10) is respectively communicated with the heat storage device (11) and the inlet of the evaporator (2), and is provided with a first regulating valve (16) and a second regulating valve (17); the outlet of the heat storage device (11) is communicated with the inlet of the evaporator (2) and is provided with a third stop valve (18); the outlet of the evaporator (2) is respectively communicated with the inlets of the photo-thermal collector (10) and the heat storage device (11) through a pump (9), and a first stop valve (14) and a second stop valve (15) are correspondingly arranged; an expansion tank (19) is arranged between the evaporator (2) and the pump (9); the heat storage medium in the heat storage device (11) can be hot molten salt, solid rock/cement, heat conduction oil and water.
6. The system of claim 5, wherein the system comprises: the heat collection temperature of the photo-thermal heat collector (10) is higher than n, and the distribution regulating valve at the outlet of the heat storage device (11) regulates the distributed heat conduction oil to flow out of the heat storage device (11); the heat collection temperature of the photo-thermal heat collector (10) is lower than n, and the distribution regulating valve at the outlet of the heat storage device (11) regulates the distributed water to flow out of the heat storage device (11).
7. The system of claim 1, wherein the system comprises: the ORC power generation device also comprises a turbine (3), a generator (4), a condenser (5) and a working medium pump (6); the outlet of the evaporator (2) is sequentially connected with a turbine (3), a condenser (5) and a working medium pump (6) in series to the inlet of the preheater (1) for circulation; a turbine valve (12) is arranged between the evaporator (2) and the turbine (3); the turbine (3) is driven by a generator (4).
8. The system of claim 7, wherein the system comprises: the outlet of the evaporator (2) is communicated with the condenser (5) through a turbine bypass valve (13), and the bypass valve (13) is connected with the turbine valve (12) in parallel.
9. The system of claim 8, wherein the system comprises: the condenser (5) can adopt an air-cooled, water-cooled or evaporative-cooled condensing heat exchanger.
10. The system of claim 9, wherein the system comprises: also includes a regenerator (20); the heat regenerator (20) is arranged between the turbine (3) and the condenser (5) in series, and the outlet of the working medium pump (6) is communicated with the heat regenerator (20); and the circulating working medium flowing out of the working medium pump (6) returns to flow through the heat regenerator (20) and then flows into the preheater (1).
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| CN202111021761.1A CN113864142A (en) | 2021-09-01 | 2021-09-01 | Geothermal energy, waste heat and photo-thermal coupling power generation system |
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| CN202111021761.1A CN113864142A (en) | 2021-09-01 | 2021-09-01 | Geothermal energy, waste heat and photo-thermal coupling power generation system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100242474A1 (en) * | 2008-06-30 | 2010-09-30 | Ormat Technologies Inc. | Multi-heat source power plant |
| CN204267119U (en) * | 2014-11-25 | 2015-04-15 | 国核柏斯顿新能源科技(北京)有限公司 | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating |
| WO2016098192A1 (en) * | 2014-12-17 | 2016-06-23 | 三菱日立パワーシステムズ株式会社 | Geothermal power generation system |
| CN111102143A (en) * | 2020-01-16 | 2020-05-05 | 河北绿源地热能开发有限公司 | Geothermal photo-thermal combined type continuous power generation system |
-
2021
- 2021-09-01 CN CN202111021761.1A patent/CN113864142A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100242474A1 (en) * | 2008-06-30 | 2010-09-30 | Ormat Technologies Inc. | Multi-heat source power plant |
| CN204267119U (en) * | 2014-11-25 | 2015-04-15 | 国核柏斯顿新能源科技(北京)有限公司 | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating |
| WO2016098192A1 (en) * | 2014-12-17 | 2016-06-23 | 三菱日立パワーシステムズ株式会社 | Geothermal power generation system |
| CN111102143A (en) * | 2020-01-16 | 2020-05-05 | 河北绿源地热能开发有限公司 | Geothermal photo-thermal combined type continuous power generation system |
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Inventor after: Liang Longhui Inventor after: Zhang Danshan Inventor after: Zhong Wei Inventor before: Zhang Danshan Inventor before: Zhong Wei |