CN111207526A - Heat storage system based on combination of light heat storage and phase-change heat storage - Google Patents
Heat storage system based on combination of light heat storage and phase-change heat storage Download PDFInfo
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- CN111207526A CN111207526A CN202010144755.4A CN202010144755A CN111207526A CN 111207526 A CN111207526 A CN 111207526A CN 202010144755 A CN202010144755 A CN 202010144755A CN 111207526 A CN111207526 A CN 111207526A
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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
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
- F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
- F24H7/0241—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water with supplementary heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/028—Control arrangements therefor
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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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
In the heat storage system based on combination of light heat storage and phase change heat storage, on one hand, in the electricity utilization valley period at night, the three-phase electric heater electrically heats the phase change material in the phase change heat storage unit, electric energy is converted into heat energy, the heat energy is stored through the phase change material, heat conduction oil is introduced into the phase change heat storage unit, and the heat stored in the phase change material is transferred to the heat conduction oil; on the other hand, when the illumination is better in the daytime, the groove type photo-thermal collector continuously heats the heat conduction oil, and the temperature of the heat conduction oil is kept by utilizing solar energy; when the industry demands high-temperature steam, the heat conduction oil transfers heat to circulating water through the heat exchanger, and high-temperature saturated steam required by production and processing is obtained through flash evaporation and compression. The solar energy heat storage and phase-change material phase-change heat storage coupled heat storage device has the advantages that the redundant electric quantity at low peak of electricity at night is utilized for heat storage, the heat is conveyed to water at daytime, saturated steam meeting technological requirements is prepared, and efficient and economic utilization of energy is achieved.
Description
Technical Field
The application relates to the technical field of heat storage, in particular to a heat storage system based on combination of light heat storage and phase change heat storage.
Background
Solar energy is used as a clean and environment-friendly renewable energy source, the occupation ratio of energy structures in China is gradually increased, but due to the randomness and the fluctuation of the solar energy, the grid fluctuation is aggravated by large-scale power generation and grid connection.
In addition, another heat storage mode is phase change heat storage, which mainly stores and releases energy by using heat absorption and heat release of a phase change material in a reversible phase change process. The phase-change material has the advantages of high heat storage density, long service life, good cycle stability, simple control and the like, but the phase-change material has low heat conductivity coefficient and narrow available temperature areas for heat storage and heat release, and the utilization of a phase-change heat storage mode is restricted.
Therefore, an energy storage system is needed to couple solar thermal storage and phase-change thermal storage.
Disclosure of Invention
The application provides a heat storage system based on combination of light heat storage and phase-change heat storage, which aims to solve the technical problem of two heat storage modes of coupling solar light heat storage and phase-change material phase-change heat storage in engineering application.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
the application provides a heat-retaining system based on light heat-retaining and phase transition heat-retaining are united includes:
three phase electric heater, phase transition heat-retaining unit, first oil pump, second oil pump, circulating oil pump, slot type light and heat collector, oil storage tank, wherein:
the three-phase electric heater is electrically connected with the phase change heat storage unit, and a first temperature controller is arranged on the phase change heat storage unit;
two ends of the phase change heat storage unit are communicated with a first heat storage branch;
the first heat storage branch comprises a first flow control valve, a second flow control valve, a first oil pump, a third flow control valve and a fourth flow control valve which are connected in sequence;
a second heat storage branch is arranged in parallel with the first heat storage branch and comprises a fifth flow control valve and a second oil pump which are sequentially connected;
and a third heat storage branch is arranged in parallel with the second heat storage branch and comprises a sixth flow control valve, a groove type photo-thermal collector, a second temperature controller, an oil storage tank and a seventh flow control valve which are sequentially connected.
An eighth flow control valve is arranged between the second heat storage branch and the third heat storage branch;
one end of the eighth flow control valve is connected with a heat exchanger, and one end of the heat exchanger is connected with a third temperature controller;
one end of the heat exchanger is connected with a flash tank and a screw compressor;
and the other end of the heat exchanger is connected with make-up water and a water pump.
Optionally, the first temperature controller is configured to control a temperature in the phase change heat storage unit;
the second temperature controller is used for controlling the temperature in the trough type photo-thermal collector;
the third temperature controller is for controlling a temperature within the heat exchanger.
Optionally, a phase-change material is arranged in the phase-change heat storage unit.
Optionally, the sixth flow control valve is used for realizing the opening and closing of the valve according to the illumination intensity;
and the seventh flow control valve realizes the opening and closing of the valve according to the liquid level in the oil storage tank.
Optionally, one end of the flash tank is connected to the water pump.
Compared with the prior art, the beneficial effect of this application is:
by above-mentioned technical scheme, among the heat-retaining system based on light heat-retaining and phase transition heat-retaining are united that this application provided, on the one hand, at night electricity consumption valley period, the three-phase electric heater carries out the electrical heating to the phase change material in the phase transition heat-retaining unit, turns into heat energy and stores heat energy through phase change material with the electric energy. When the equipment works, heat conducting oil is introduced into the phase change heat storage unit, heat stored in the phase change material is transferred to the heat conducting oil, the oil temperature of the heat conducting oil is controlled by the first temperature controller, and meanwhile, the fourth flow control valve, the fifth flow control valve, the first flow control valve and the second oil pump are opened, so that the circulating preheating of the whole heat conducting oil is realized; on the other hand, when the illumination condition is better in the daytime, the eighth flow control valve is gradually closed, the sixth flow control valve is gradually opened at the same time, the groove type photo-thermal collector continuously heats the heat conducting oil, the oil temperature is controlled by the second temperature controller at the moment, the heat conducting oil flows into the oil storage tank, the eighth flow control valve is gradually closed, the seventh flow control valve is linked with the eighth flow control valve and the liquid level of the heat conducting oil storage tank through sequential control logic and is gradually opened to the full-open position, the temperature of the heat conducting oil is kept by utilizing solar energy, and the combined utilization of solar energy heat storage and phase change heat; when high-temperature water vapor is required by industry, heat conducting oil flows into the heat exchanger, the heat conducting oil transfers heat to circulating water through the heat exchanger, the circulating water is hot to be superheated water, the superheated water flashes out the superheated water vapor through the flash tank, and finally the high-temperature saturated water vapor required by production and processing is obtained through compression of the screw compressor.
The solar energy heat storage and phase-change material phase-change heat storage coupled heat storage device has the advantages that the redundant electric quantity at low peak of electricity at night is utilized for heat storage, the heat is conveyed to water at daytime, saturated steam meeting technological requirements is prepared, and efficient and economic utilization of energy is achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heat storage system based on combination of optical heat storage and phase-change heat storage according to an embodiment of the present invention.
Wherein:
1-a three-phase electric heater, 2-a phase-change heat storage unit, 3-a first temperature controller, 4-a first flow control valve, 5-a second flow control valve, 6-a first oil pump, 7-a third flow control valve, 8-a fourth flow control valve, 9-a fifth flow control valve, 10-a circulating oil pump, 11-a sixth flow control valve, 12-a groove type photothermal heat collector, 13-a second temperature controller, 14-an oil storage tank, 15-a seventh flow control valve, 16-a third temperature controller, 17-a heat exchanger, 18-an eighth flow control valve, 19-a second oil pump, 20-a flash tank, 21-a screw compressor, 22-make-up water and 23-a water pump.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a heat storage system based on combination of optical heat storage and phase-change heat storage according to an embodiment of the present invention; the following description of the embodiments is based on fig. 1.
As shown in fig. 1, the heat storage system based on combination of optical heat storage and phase-change heat storage provided by the present application includes:
three phase electric heater 1, phase transition heat-retaining unit 2, first oil pump 6, second oil pump 19, circulating oil pump 10, slot type light and heat collector 12, oil storage tank 14, wherein:
the three-phase electric heater 1 is electrically connected with the phase change heat storage unit 2, and a first temperature controller 3 is arranged on the phase change heat storage unit 2; when the electricity consumption is in the low peak period at night, the three-phase electric heater 1 is utilized to electrically heat the phase-change material in the phase-change heat storage unit 2, so that the electric energy is converted into heat energy and the heat energy is stored through the phase-change material.
The both ends intercommunication of phase transition heat-retaining unit 2 has first heat-retaining branch road, and the function of first heat-retaining branch road specifically includes for realizing the phase transition heat-retaining:
the first heat storage branch comprises a first flow control valve 4, a second flow control valve 5, a first oil pump 6, a third flow control valve 7 and a fourth flow control valve 8 which are connected in sequence;
heat conduction oil is introduced into the phase change heat storage unit 2, heat stored in the phase change material is transferred to the heat conduction oil, and the oil temperature of the heat conduction oil is controlled by the first temperature controller 3.
The first flow control valve 4 is controlled by the first temperature controller 3, the size of a valve of the first flow control valve 4 is adjusted according to the temperature of the phase change heat storage unit 2, and the first flow control valve 4 controls the flow of the heat conduction oil flowing to the heat storage unit to be smaller when the temperature of the phase change heat storage unit 2 is lower.
A second heat storage branch is arranged in parallel with the first heat storage branch and comprises a fifth flow control valve 9 and a second oil pump 19 which are sequentially connected; in order to realize the circulation preheating of the heat conducting oil, the fifth flow control valve 9 and the second oil pump 19 need to be opened at the same time. The first oil pump 6 and the second oil pump 19 are powered by a power supply, so that heat conducting oil circulates in the system.
And a third heat storage branch is arranged in parallel with the second heat storage branch and comprises a sixth flow control valve 11, a groove type photo-thermal collector 12, a second temperature controller 13, an oil storage tank 14 and a seventh flow control valve 15 which are sequentially connected.
The function of third heat-retaining branch road is for realizing solar energy heat-retaining, utilizes the heat-conducting oil to store the prerequisite of heat energy for keeping the temperature of heat-conducting oil, consequently utilizes the third heat-retaining branch road can utilize solar energy to nevertheless hot oil provide the heat and keep the temperature of heat-conducting oil in working range in this application embodiment, specifically includes: under the condition that the illumination is good in the daytime, the sixth flow control valve 11 is opened and closed according to the illumination intensity, the valve is opened when the illumination condition is sufficient, otherwise, the sixth flow control valve 11 is opened gradually when the condition is met, the groove type photo-thermal heat collector 12 continuously heats the heat conduction oil, the oil temperature is controlled by the second temperature controller 13, the heat conduction oil flows into the oil storage tank 14, the seventh flow control valve 15 is opened and closed according to the liquid level height of the oil storage tank 14, when the liquid level reaches the designated height, the valve is opened, the seventh flow control valve 15 is opened when the condition is met, and therefore the purpose of keeping the temperature of the heat conduction oil by utilizing the solar energy can.
An eighth flow control valve 18 is arranged between the second heat storage branch and the third heat storage branch, when the third heat storage branch is operated, the eighth flow control valve 18 needs to be gradually closed, and in the process of closing the eighth flow control valve 18, the seventh flow control valve 15 is linked through sequential control logic and is gradually opened to a full-open position; the seventh flow control valve 15 is in the fully opened state when the eighth flow control valve 18 is to be fully closed.
In the embodiment of the present application, in order to meet the industrial requirement for high-temperature water vapor, a heat exchanger 17 is connected to one end of the eighth flow control valve 18, and a third temperature controller 16 is connected to one end of the heat exchanger 17;
one end of the heat exchanger 17 is connected with a flash tank 20 and a screw compressor 21;
the other end of the heat exchanger 17 is connected to make-up water 22 and a water pump 23.
The specific operation is as follows: gradually closing the fifth flow control valve 9 and the second oil pump 19, simultaneously opening the circulating oil pump 10 and the eighth flow control valve 18, enabling heat conduction oil to flow into the heat exchanger 17, controlling the oil temperature entering the heat exchanger 17 through the third temperature controller 16, enabling the heat conduction oil to transfer heat to circulating water through the heat exchanger 17, heating the circulating water into superheated water, enabling the superheated water to be flashed into steam through the flash tank 20, compressing the steam through the screw compressor 21 to obtain high-temperature steam required by production and processing, mixing the residual circulating water in the flash tank 20 with the make-up water 22, and pumping the mixed circulating water into the heat exchanger 17 again through the water pump 23 to be heated.
In the embodiment of the present application, the working process of the heat storage system specifically includes:
at night, in the electricity consumption valley period, the three-phase electric heater 1 electrically heats the phase change material in the phase change heat storage unit 2, converts electric energy into heat energy and stores the heat energy through the phase change material;
heat conducting oil is introduced into the heat exchanger of the phase change heat storage unit 2, heat stored in the phase change material is transferred to the heat conducting oil, the oil temperature of the heat conducting oil is controlled by the first temperature controller 3, and meanwhile, the fourth flow control valve 8, the fifth flow control valve 9, the first flow control valve 4 and the second oil pump 19 are opened to preheat the whole heat conducting oil circulation;
when the industrial demand requires the supply of high-temperature water vapor, the fifth flow control valve 9 and the second oil pump 19 are gradually closed, the circulating oil pump 10 and the eighth flow control valve 18 are simultaneously opened, so that the heat-conducting oil flows into the heat exchanger 17, and the temperature of the oil entering the heat exchanger is controlled by the third temperature controller 16. The heat conducting oil transfers heat to the circulating water through the heat exchanger 17, the circulating water is heated into superheated water, superheated steam is flashed through the flash tank 20, and the superheated steam is compressed through the screw compressor 21 to obtain high-temperature saturated steam required by production and processing. The residual circulating water in the flash tank 20 is mixed with the make-up water 22 and is pumped into the heat exchanger 17 again through the water pump 23 for heating;
under the condition of better illumination, the eighth flow control valve 18 is gradually closed, meanwhile, the sixth flow control valve 11 and the seventh flow control valve 15 are gradually opened, the groove type photo-thermal collector 12 continuously heats the heat conduction oil, the oil temperature is controlled by the second temperature controller 13, the heat conduction oil flows into the oil storage tank 14, after the eighth flow control valve 18 is completely closed, the fourth flow control valve 8 is gradually closed, the first flow control valve 4 is gradually switched to a loop where the first oil pump 6 is located, the second flow control valve 5 and the third flow control valve 7 are synchronously opened, and the phase change heat storage unit is gradually bypassed, so that the temperature of the heat conduction oil can be kept within a working range by fully utilizing the solar energy in the day, the consumption of the phase change heat storage unit is reduced as much as possible, and conditions are provided for utilizing the heat conduction oil to convey heat to water vapor and preparing high-temperature water. In summary, in the embodiment of the present application, at night, the surplus electric quantity at the low peak of power consumption is converted into heat to be stored in the phase change material, the phase change material transfers the heat to the heat conduction oil, the temperature of the heat conduction oil is maintained by using solar energy in the daytime, then the heat-insulating heat conduction oil is introduced into the heat exchanger 17, and the circulating water is prepared into high-temperature steam to meet the industrial demand after heating, flash evaporation and compression treatment.
In the embodiment of the application, the temperature of the heat conducting oil of the phase change heat storage unit is gradually reduced, and when the temperature is lower than the control range of the first temperature controller 3, the fourth flow control valve 8 and the first flow control valve 4 are slowly adjusted, so that the heat conducting oil flowing into the phase change heat storage unit 2 is reduced, and meanwhile, the second flow control valve 5, the third flow control valve 7 and the first oil pump 6 are slowly opened, so that bypass circulation of the phase change heat storage unit under the low-temperature condition is realized.
In conclusion, the solar energy heat storage and the phase-change material phase-change heat storage are coupled, the surplus electric quantity with low peak electricity at night is used for heat storage, and heat is conveyed to water vapor in the daytime, so that efficient utilization of energy is realized.
Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (5)
1. A heat storage system based on combination of light heat storage and phase change heat storage, comprising:
three phase electric heater (1), phase transition heat-retaining unit (2), first oil pump (6), second oil pump (19), circulating oil pump (10), slot type light and heat collector (12), oil storage tank (15), wherein:
the three-phase electric heater (1) is electrically connected with the phase change heat storage unit (2), and a first temperature controller (3) is arranged on the phase change heat storage unit (2);
two ends of the phase change heat storage unit (2) are communicated with a first heat storage branch;
the first heat storage branch comprises a first flow control valve (4), a second flow control valve (5), a first oil pump (6), a third flow control valve (7) and a fourth flow control valve (8) which are connected in sequence;
a second heat storage branch is arranged in parallel with the first heat storage branch and comprises a fifth flow control valve (9) and a second oil pump (19) which are sequentially connected;
a third heat storage branch is arranged in parallel with the second heat storage branch and comprises a sixth flow control valve (11), a groove type photo-thermal collector (12), a second temperature controller (13), an oil storage tank (14) and a seventh flow control valve (15) which are sequentially connected;
an eighth flow control valve (18) is arranged between the second heat storage branch and the third heat storage branch;
one end of the eighth flow control valve (18) is connected with a heat exchanger (17), and one end of the heat exchanger (17) is connected with a third temperature controller (16);
one end of the heat exchanger (17) is connected with a flash tank (20) and a screw compressor (21);
the other end of the heat exchanger (17) is connected with make-up water (22) and a water pump (23).
2. Thermal storage system based on a combination of optical and phase change thermal storage according to claim 1, characterized in that the first temperature controller (3) is used to control the temperature inside the phase change thermal storage unit (2);
the second temperature controller (13) is used for controlling the temperature in the trough type photo-thermal collector (12);
the third temperature controller is used for controlling the temperature in the heat exchanger (17).
3. Thermal storage system based on a combination of optical and phase change thermal storage according to claim 1, characterized in that phase change material is arranged inside the phase change thermal storage unit (2).
4. The thermal storage system based on a combination of optical thermal storage and phase change thermal storage according to claim 1,
the sixth flow control valve (11) is used for realizing the opening and closing of the valve according to the illumination intensity;
the seventh flow control valve (15) realizes the opening and closing of the valve according to the liquid level in the oil storage tank (14).
5. Thermal storage system based on a combination of optical and phase change thermal storage according to claim 1, characterized in that one end of the flash tank (20) is connected to the water pump (23).
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| CN115253344A (en) * | 2022-08-26 | 2022-11-01 | 云南电网有限责任公司电力科学研究院 | Steam supply system |
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| CN112879114A (en) * | 2021-01-15 | 2021-06-01 | 云南电网有限责任公司电力科学研究院 | Thermoelectric cooperative system and method based on multi-energy complementation and step heat storage |
| CN112879114B (en) * | 2021-01-15 | 2023-07-07 | 云南电网有限责任公司电力科学研究院 | Thermoelectric cooperative system and method based on multi-energy complementation and step heat accumulation |
| CN114508779A (en) * | 2022-02-16 | 2022-05-17 | 北京市热力集团有限责任公司 | Heating system and control method thereof |
| CN115253344A (en) * | 2022-08-26 | 2022-11-01 | 云南电网有限责任公司电力科学研究院 | Steam supply system |
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| CN111207526B (en) | 2021-07-30 |
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