CN111173696A - Solar thermal power generation system and method of free piston linear generator with heat storage function - Google Patents
Solar thermal power generation system and method of free piston linear generator with heat storage function Download PDFInfo
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- CN111173696A CN111173696A CN202010126563.0A CN202010126563A CN111173696A CN 111173696 A CN111173696 A CN 111173696A CN 202010126563 A CN202010126563 A CN 202010126563A CN 111173696 A CN111173696 A CN 111173696A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
- F02B63/041—Linear electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B71/00—Free-piston engines; Engines without rotary main shaft
- F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1869—Linear generators; sectional generators
- H02K7/1876—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts
- H02K7/1884—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts structurally associated with free piston 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
- 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
- Y02E20/14—Combined heat and power generation [CHP]
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A solar thermal power generation system and method of a free piston linear generator with heat storage comprises a solar thermal collector, wherein working medium side outlets of the solar thermal collector are divided into two paths, one path is connected with a valve c, the other path is connected with a valve d, the valve c is connected with an energy storage system, an outlet of the energy storage system is connected with an inlet of a valve e, an outlet of the valve e is connected with an outlet of the valve d after being converged and then connected with the free piston linear generator, an exhaust port of the free piston linear generator is connected with a condenser, an outlet of the energy storage system is connected with an inlet of a valve f, an outlet of the valve f is connected with an inlet of a liquid storage device after being converged and then connected with an inlet of the liquid storage device, an outlet of the liquid storage device is divided into two paths, one path is connected with an inlet of, and the outlet of the valve b is connected with the inlet of the low-temperature side of the energy storage system. The invention has the advantages of high efficiency, low cost and wide working range.
Description
Technical Field
The invention relates to the technical field of power generation systems, in particular to a solar thermal power generation system and method of a free piston linear generator with heat storage.
Background
Solar energy is an inexhaustible clean energy, and as the theoretical thermal efficiency of solar photo-thermal power generation is high during high-temperature heat collection, and the problem of uneven solar time distribution can be solved by adopting cheaper heat storage and energy storage in theory, the photo-thermal power generation is more and more emphasized.
However, solar thermal power generation has the difficulties that the cost is too high and the popularization is difficult, the energy density of solar energy is relatively dispersed, and the conventional power generation device is suitable for being applied to occasions with relatively high energy density, such as fossil energy power generation, nuclear power generation and the like. In the case of low energy density, such as solar power generation, it is necessary to collect the heat of the focused solar energy, so called a focused heat collector. The focusing heat collector of the present invention is broadly classified into a tracking type, a non-tracking type, a focusing type, a non-focusing type, and the like. The tracking type is that the heat collector needs to change according to the position angle of the sun relative to the ground at different moments every day, and then the light rotates, so that the efficiency of the heat collector is high, but a tracking system is required to be equipped, and the tracking system comprises a speed reduction motor, a traditional mechanism and the like, so that the cost is increased. The non-focusing type does not need to rotate, the design of the shape of the condensing lens body ensures that the sun can focus light rays to the heat absorber at different angles, and the defects are low condensing efficiency and low heat collecting temperature. The focusing heat collector adopts a lens or a reflector to collect the sunlight on a certain projection area to one point or one line, has the advantages of high heat collection temperature, needs to manufacture the reflector or the lens with a point geometric profile requirement, increases certain cost, and has the cost related to the mirror surface requirement. The Fischer-Tropsch type heat collector, such as a flat plate heat collector, simply depends on solar energy to radiate and heat working media on the front side, so that the manufacture is simple, but the heat collection temperature is lower. The solar photo-thermal power generation is a most reasonable power generation system which is prepared by comparing and selecting factors such as comprehensive cost, efficiency and the like among various different devices.
The linear generator is almost a generator form which is simultaneous with the rotary generator, and only the rotary generator is more suitable under the condition of high-speed movement, and then the linear generator is only adopted under special conditions. In recent years, attention has been paid to the development of new energy sources such as wave energy and the utilization of linear generators. The linear generator can keep higher efficiency under the relatively lower frequency movement condition, which cannot be realized by a rotary generator, and meanwhile, after the piston expansion-linear generator system is provided with acting parts such as a spring, a piston and the like, the piston expansion-linear generator system can generate electricity by utilizing airflow with very low pressure difference and very low temperature difference, which cannot be realized by a common turbine and a common generator. And such piston expansion-linear generator systems have been widely researched and applied. The characteristics of the piston expansion-linear generator system bring new opportunity for low-temperature waste heat power generation.
Meanwhile, solar energy has a discontinuous problem, and if continuous power generation is needed, the problem can be solved through an energy storage system. The present invention addresses these issues.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a solar thermal power generation system and method of a free piston linear generator with heat storage, which have the advantages of high efficiency, low cost and wide working range, can solve the problem of solar discontinuity and realize the characteristic of continuous power generation.
In order to achieve the purpose, the invention adopts the technical scheme that:
a solar thermal power generation system of a free piston linear generator with heat storage comprises a solar thermal collector 1, wherein working medium side outlets of the solar thermal collector 1 are divided into two paths, one path is connected with an inlet of a valve c, the other path is connected with an inlet of a valve d, an outlet of the valve c is connected with a high-temperature side inlet of an energy storage system 5, a high-temperature side outlet of the energy storage system 5 is connected with an inlet of a valve e, an outlet of the valve e is connected with an inlet of a free piston linear generator 2 after being converged with an outlet of the valve d, an exhaust port of the free piston linear generator 2 is connected with an inlet of a condenser 3, a low-temperature side outlet of the energy storage system 5 is connected with an inlet of a valve f, an outlet of the valve f is connected with an inlet of a liquid accumulator 4 after being converged with an outlet of the condenser 3, an outlet of the liquid accumulator 4 is divided into, the other way of the outlet of the liquid storage device 4 is connected with the inlet of a valve b, and the outlet of the valve b is connected with the inlet of the low-temperature side of the energy storage system 5.
The solar heat collector 1 adopts a medium-low temperature solar heat collector and adopts a trough type heat collector.
The energy storage system 5 can select different numbers of energy storage units according to different power generation capacities of the system, the melting point of the energy storage material is close to the heat collection temperature of solar energy, the energy storage material is lower than the heat collection temperature, latent heat is used for storing energy, and the energy storage material is packaged in the energy storage units and does not flow.
A solar thermal power generation method of a free piston linear generator with heat storage comprises the following steps;
the method comprises the steps that in the daytime, when sunlight is sufficient and the quantity of electric energy to be output is not large, valves a, c, d and f are opened, valves b and e are closed, working media pass through a solar heat collector 1 and then enter a free piston linear generator 2 through a valve d to do work, then are cooled into liquid in a condenser 3, finally are converged into a liquid storage device 4, the other path of working media enters an energy storage system 5 through a valve c to release heat, the heat is stored in the energy storage system and then enters the liquid storage device 4 through a valve f, and the working media enter the solar heat collector 1 from an outlet of the liquid storage device 4 through a valve a to complete the whole cycle;
when sunlight exists in the daytime and a large amount of electric energy needs to be output, the valves a and d are opened, the valves b, c, e and f are closed, the working medium enters the free piston linear generator 2 through the valve d after passing through the solar heat collector 1 to do work, then is cooled into liquid in the condenser 3, and finally flows into the liquid storage device 4, and the working medium enters the solar heat collector 1 through the valve a from the outlet of the liquid storage device 4 to complete the whole cycle;
the solar energy heat collector is characterized in that sunlight exists in the daytime but the sunlight is insufficient, required heat is stored in the energy storage system 5, meanwhile, when a large amount of electric energy needs to be output, valves a, b, d and e are opened, valves c and f are closed, a part of working medium passing through the valve d after passing through the solar energy collector 1 is converged with another part of working medium passing through the valve e after passing through the energy storage system 5, then the working medium enters the free piston linear generator 2 to do work, then the working medium is cooled into liquid in the condenser 3, and finally the working medium is converged into the liquid storage device 4, a part of working medium enters the solar energy collector 1 through the valve a after passing through the outlet of the liquid storage device 4 to complete circulation, and another part of working;
when no sunlight exists, the energy storage system 5 stores needed heat, meanwhile, when electric energy needs to be output, the valves b and e are opened, the valves a, c, d and f are closed, the working medium passes through the energy storage system 5 and then the valve e, enters the free piston linear generator 2 to do work, is cooled into liquid in the condenser 3, and finally is converged into the liquid storage device 4, the working medium flowing out of the outlet of the liquid storage device 4 enters the energy storage system 5 through the valve b to absorb the heat, and circulation is completed;
there is sunshine daytime to open valve a, c, f when the electric energy that does not need to export, close valve b, d, e, working medium gets into energy storage system 5 release heat through valve c after passing through solar collector 1, and the heat storage is in energy storage system, then gets into reservoir 4 through valve f, and the working medium gets into solar collector 1 through valve a from reservoir 4 export again and accomplishes whole circulation.
The condenser 3 is back to the sun and arranged in a shadow, wherein the liquid level of a liquid working medium is higher than the liquid level in the non-tracking solar heat collector 1, the pressure difference generated by the height difference provides the working medium to flow and the pressure difference required by the free piston linear generator system to do work, the heat storage system 5 absorbing the heat of the working medium when the heat storage system 5 stores heat plays a role similar to the condenser 3, the liquid level in the working medium liquid level high-pressure solar heat collector and the liquid level height difference provide flowing power, when the heat storage system 5 releases heat, the heat storage system 5 plays a role similar to the solar heat collector 1, and the liquid level in the liquid level low-pressure condenser and the liquid level height difference provide flowing power.
The invention has the beneficial effects that:
the free piston linear generator solar thermal power generation system with the heat storage function adopts a free piston linear generator system which is low in cost, when the system works specifically, the liquid level of a liquid working medium in the condenser 3 is higher than that of the liquid in the solar heat collector 1, and the pressure difference generated by the height difference provides the pressure difference required by working medium flow and the free piston linear generator system to do work, so that the system does not need to be pressurized by adopting equipment such as a pump and the like, and the system is simplified to the greatest extent.
Meanwhile, as the motion frequency and the speed of the free piston linear generator system are lower, the difficulty of shaft seal is greatly reduced, and a cheaper shaft seal form such as graphite can be adopted, so that the cost is greatly reduced.
Meanwhile, the pressure difference required by the power generation system is small, so that the pressure of the whole system can be low, the pressure grade of the system can be reduced, the adoption of cheaper materials and a processing and manufacturing process can be facilitated, and the cost of the system can be further reduced. Meanwhile, the solar heat collector has low temperature requirement (power generation can be carried out at about 100 ℃), and adopts a non-tracking heat collector, so that a complex tracking mechanism is omitted, and the cost is further reduced. The non-tracking heat collector has various types, such as CPC type, V type and profiles of various novel structures, and the heat collector can be used as the heat collector of the invention if the line is focused and the arrangement is not influenced.
Meanwhile, due to the adoption of the energy storage system, redundant heat can be stored when sunlight is sufficient in the daytime, the heat is stored in the energy storage system when the sunlight is insufficient, and meanwhile, when electric energy needs to be output, the heat in the energy storage system can be utilized for power generation.
Meanwhile, due to the adoption of an energy storage system, the problem of solar discontinuity can be solved, and continuous power generation is realized.
Drawings
Fig. 1 is a schematic diagram of a solar thermal power generation system with a heat-storage free piston linear generator.
In the figure: the device comprises a solar heat collector 1, a free piston linear generator 2, a condenser 3, a liquid storage device 4 and an energy storage system 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a solar thermal power generation system with a heat-storage free piston linear generator comprises a solar thermal collector 1, a free piston linear generator 2, a condenser 3, a liquid storage device 4, an energy storage system 5, and related valves and pipelines;
in the solar heat collector 1, the working medium side outlet of the solar heat collector 1 is divided into two paths, one path is connected with the inlet of a valve c, the other path is connected with the inlet of a valve d, the outlet of the valve c is connected with the high-temperature side inlet of an energy storage system 5, the high-temperature side outlet of the energy storage system 5 is connected with the inlet of a valve e, the outlet of the valve e is connected with the inlet of a free piston linear generator 2 after being converged with the outlet of the valve d, the exhaust port of the free piston linear generator 2 is connected with the inlet of a condenser 3, the low-temperature side outlet of the energy storage system 5 is connected with the inlet of a valve f, the outlet of the valve f is connected with the inlet of a liquid storage device 4 after being converged with the outlet of the condenser 3, the outlet of the liquid storage device 4 is divided into two paths, one path is connected with the inlet of a valve a, the outlet of the valve b is connected with the inlet of the low-temperature side of the energy storage system 5.
The solar heat collector 1 adopts a medium-low temperature solar heat collector and adopts a trough type heat collector.
The energy storage system 5 can select different numbers of energy storage units according to different power generation capacities of the system, the melting point of the energy storage material is close to the heat collection temperature of solar energy, the energy storage material is lower than the heat collection temperature, latent heat is used for storing energy, and the energy storage material is packaged in the energy storage units and does not flow.
A solar thermal power generation method of a free piston linear generator with heat storage comprises the following steps;
the method comprises the steps that in the daytime, when sunlight is sufficient and the quantity of electric energy to be output is not large, valves a, c, d and f are opened, valves b and e are closed, working media pass through a solar heat collector 1 and then enter a free piston linear generator 2 through a valve d to do work, then are cooled into liquid in a condenser 3, finally are converged into a liquid storage device 4, the other path of working media enters an energy storage system 5 through a valve c to release heat, the heat is stored in the energy storage system and then enters the liquid storage device 4 through a valve f, and the working media enter the solar heat collector 1 from an outlet of the liquid storage device 4 through a valve a to complete the whole cycle;
when sunlight exists in the daytime and a large amount of electric energy needs to be output, the valves a and d are opened, the valves b, c, e and f are closed, the working medium enters the free piston linear generator 2 through the valve d after passing through the solar heat collector 1 to do work, then is cooled into liquid in the condenser 3, and finally flows into the liquid storage device 4, and the working medium enters the solar heat collector 1 through the valve a from the outlet of the liquid storage device 4 to complete the whole cycle;
the solar energy heat collector is characterized in that sunlight exists in the daytime but the sunlight is insufficient, required heat is stored in the energy storage system 5, meanwhile, when a large amount of electric energy needs to be output, valves a, b, d and e are opened, valves c and f are closed, a part of working medium passing through the valve d after passing through the solar energy collector 1 is converged with another part of working medium passing through the valve e after passing through the energy storage system 5, then the working medium enters the free piston linear generator 2 to do work, then the working medium is cooled into liquid in the condenser 3, and finally the working medium is converged into the liquid storage device 4, a part of working medium enters the solar energy collector 1 through the valve a after passing through the outlet of the liquid storage device 4 to complete circulation, and another part of working;
when no sunlight exists, the energy storage system 5 stores needed heat, meanwhile, when electric energy needs to be output, the valves b and e are opened, the valves a, c, d and f are closed, the working medium passes through the energy storage system 5 and then the valve e, enters the free piston linear generator 2 to do work, is cooled into liquid in the condenser 3, and finally is converged into the liquid storage device 4, the working medium flowing out of the outlet of the liquid storage device 4 enters the energy storage system 5 through the valve b to absorb the heat, and circulation is completed;
there is sunshine daytime to open valve a, c, f when the electric energy that does not need to export, close valve b, d, e, working medium gets into energy storage system 5 release heat through valve c after passing through solar collector 1, and the heat storage is in energy storage system, then gets into reservoir 4 through valve f, and the working medium gets into solar collector 1 through valve a from reservoir 4 export again and accomplishes whole circulation.
The condenser 3 is back to the sun and arranged in a shadow, wherein the liquid level of a liquid working medium is higher than the liquid level in the non-tracking solar heat collector 1, the pressure difference generated by the height difference provides the working medium to flow and the pressure difference required by the free piston linear generator system to do work, the heat storage system 5 absorbing the heat of the working medium when the heat storage system 5 stores heat plays a role similar to the condenser 3, the liquid level in the working medium liquid level high-pressure solar heat collector and the liquid level height difference provide flowing power, when the heat storage system 5 releases heat, the heat storage system 5 plays a role similar to the solar heat collector 1, and the liquid level in the liquid level low-pressure condenser and the liquid level height difference provide flowing power.
Claims (5)
1. A solar thermal power generation system of a free piston linear generator with heat storage is characterized by comprising a solar heat collector (1), wherein a working medium side outlet of the solar heat collector (1) is divided into two paths, one path is connected with an inlet of a valve c, the other path is connected with an inlet of a valve d, an outlet of the valve c is connected with a high-temperature side inlet of an energy storage system (5), a high-temperature side outlet of the energy storage system (5) is connected with an inlet of a valve e, an outlet of the valve e is connected with an inlet of a free piston linear generator (2) after being converged with an outlet of the valve d, an exhaust port of the free piston linear generator (2) is connected with an inlet of a condenser (3), a low-temperature side outlet of the energy storage system (5) is connected with an inlet of a valve f, an outlet of the valve f is connected with an inlet of a liquid reservoir (, the outlet of the liquid storage device (4) is divided into two paths, one path is connected with the inlet of the valve a, the outlet of the valve a is connected with the inlet of the solar heat collector (1), the other path of the outlet of the liquid storage device (4) is connected with the inlet of the valve b, and the outlet of the valve b is connected with the inlet of the low-temperature side of the energy storage system (5).
2. The solar thermal power generation system with the heat storage function of the free piston linear generator of claim 1, wherein the solar thermal collector (1) is a medium-low temperature solar thermal collector in the form of a trough thermal collector.
3. The solar thermal power generation system with the heat storage free piston linear generator is characterized in that the energy storage system (5) can select different numbers of energy storage units according to different power generation capacities of the system, the melting point of the energy storage material is close to the solar heat collection temperature and is lower than the heat collection temperature, latent heat energy is adopted for storing, and the energy storage material is packaged in the energy storage units and does not flow.
4. A solar thermal power generation method of a free piston linear generator with heat storage is characterized by comprising the following steps;
the method comprises the steps that when sunlight is sufficient in daytime and the quantity of electric energy to be output is not large, valves a, c, d and f are opened, valves b and e are closed, working media pass through a solar heat collector (1) and then enter a free piston linear generator (2) through a valve d to do work, then are cooled into liquid in a condenser (3), finally are collected into a liquid storage device (4), the other path of working media enters an energy storage system (5) through a valve c to release heat, the heat is stored in the energy storage system and then enters the liquid storage device (4) through a valve f, and the working media enter the solar heat collector (1) from an outlet of the liquid storage device (4) through a valve a to complete the whole cycle;
when sunlight exists in the daytime and a large amount of electric energy needs to be output, the valves a and d are opened, the valves b, c, e and f are closed, the working medium enters the free piston linear generator (2) through the valve d after passing through the solar heat collector (1) to do work, then is cooled into liquid in the condenser (3), finally is collected into the liquid storage device (4), and then enters the solar heat collector (1) from the outlet of the liquid storage device (4) through the valve a to complete the whole cycle;
the solar energy heat collector is characterized in that sunlight exists in the daytime but the sunlight is insufficient, required heat is stored in the energy storage system (5), meanwhile, when a large amount of electric energy needs to be output, valves a, b, d and e are opened, valves c and f are closed, a part of working medium passing through the valve d after passing through the solar energy collector (1) is converged with another part of working medium passing through the valve e after passing through the energy storage system (5), then the working medium enters the free piston linear generator (2) to do work, then the working medium is cooled into liquid in the condenser (3), and finally the liquid is converged into the liquid reservoir (4), a part of working medium enters the solar energy collector (1) through the valve a after exiting from the liquid reservoir (4) to complete circulation, and another part of working medium enters the energy storage system (5) through the valve;
when no sunlight exists, the energy storage system (5) stores needed heat, meanwhile, when electric energy needs to be output, valves b and e are opened, valves a, c, d and f are closed, working media pass through the energy storage system (5) and then pass through the valve e, enter the free piston linear generator (2) to do work, are cooled into liquid in the condenser (3), finally are converged into the liquid storage device (4), and the working media flowing out of the outlet of the liquid storage device (4) enter the energy storage system (5) through the valve b to absorb the heat, so that circulation is completed;
there is sunshine daytime to open valve a, c, f when the electric energy that does not need to export, close valve b, d, e, the working medium gets into energy storage system (5) release heat through valve c after passing through solar collector (1), and the heat storage is in energy storage system, then gets into reservoir (4) through valve f, and the working medium gets into solar collector (1) through valve a from reservoir (4) export again and accomplishes whole circulation.
5. The method of claim 4 for solar thermal power generation with thermal storage of a free piston linear generator, it is characterized in that the condenser (3) is back to the sun and arranged in the shadow, wherein the liquid level of the liquid working medium is higher than that in the non-tracking solar heat collector (1), and the pressure difference generated by the height difference provides the working medium flow and the pressure difference required by the free piston linear generator system to do work, when the heat storage system (5) stores heat, the heat storage system (5) absorbs the heat of the working medium to play a role similar to the condenser (3), the liquid level of the working medium is high-pressure, the liquid level difference of the liquid level in the solar heat collector provides flowing power, when the heat storage system (5) releases heat, the heat storage system (5) acts like a solar heat collector (1), wherein the liquid level is lower than the liquid level in a condenser, and the liquid level difference provides flowing power.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536003A (en) * | 2020-06-02 | 2020-08-14 | 西安热工研究院有限公司 | Solar power generation system and method adopting non-tracking heat collector and linear generator |
| CN111535892A (en) * | 2020-06-02 | 2020-08-14 | 西安热工研究院有限公司 | Low-temperature waste heat simple power generation system and method adopting linear generator |
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| CN111535892A (en) * | 2020-06-02 | 2020-08-14 | 西安热工研究院有限公司 | Low-temperature waste heat simple power generation system and method adopting linear generator |
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