CN211230729U - Thermal energy storage circulating device capable of adapting to illumination change - Google Patents
Thermal energy storage circulating device capable of adapting to illumination change Download PDFInfo
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- CN211230729U CN211230729U CN201922263153.6U CN201922263153U CN211230729U CN 211230729 U CN211230729 U CN 211230729U CN 201922263153 U CN201922263153 U CN 201922263153U CN 211230729 U CN211230729 U CN 211230729U
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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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Abstract
The utility model discloses a heating power energy storage circulating device of adaptable illumination change, include: the low-temperature medium storage tank is communicated with the solar heat collector, and the solar heat collector is communicated with the high-temperature medium storage tank; the high-temperature medium storage tank is communicated with a first heat exchanger, the first heat exchanger is communicated with the solar heat collector, the first heat exchanger is communicated with a fourth heat exchanger, and the fourth heat exchanger is communicated with the low-temperature medium storage tank; the first heat exchanger is communicated with the first turbine, the first turbine is communicated with the second heat exchanger, the second heat exchanger is communicated with the third heat exchanger, the third heat exchanger is communicated with the compressor, the compressor is communicated with the second heat exchanger, and the second heat exchanger is communicated with the first heat exchanger; the third heat exchanger is communicated with the second turbine, the second turbine is communicated with the first cooler, and the first cooler is communicated with the third heat exchanger. The utility model discloses can promote solar photothermal power's stability and energy utilization efficiency.
Description
Technical Field
The utility model belongs to the technical field of the solar energy storage, in particular to heating power energy storage circulating device of adaptable illumination change.
Background
The traditional energy is increasingly deficient, the environmental protection pressure is getting more serious, and new energy is paid more attention. Solar energy is one of new energy sources which are most widely applied and have higher technical maturity at present, and the solar energy has attracted extensive attention.
The existing photo-thermal power generation technology has the problems of large change of intensity under solar illumination, extremely unstable system output, short available power time period, low power generation efficiency and the like; the method specifically comprises the following steps:
(1) when the solar illumination intensity is low, the conventional photo-thermal power generation technology cannot generate power, so that a part of energy is wasted;
(2) when the solar illumination intensity changes, the power generation output fluctuation of the conventional photo-thermal power generation technology is large, so that the stability requirement of a power grid cannot be met;
(3) the conventional photo-thermal power generation technology adopts water vapor circulation, and the components are large in size and complex and are not easy to popularize and use.
Therefore, it is urgently needed to develop a thermal energy storage cycle device which can adapt to illumination change, realize stable output of solar photo-thermal power generation, and improve power generation efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heating power energy storage circulating device of adaptable illumination change to solve the above-mentioned one or more technical problem who exists. The utility model discloses can promote solar photothermal power's stability and energy utilization efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a heating power energy storage circulating device of adaptable illumination change, include: the system comprises a low-temperature medium storage tank, a solar heat collector, a high-temperature medium storage tank, a first heat exchanger, a first turbine, a second heat exchanger, a third heat exchanger, a compressor, a second turbine, a first cooler, a first compression pump and a fourth heat exchanger; an outlet of the low-temperature medium storage tank is communicated with a first inlet of a solar heat collector through a first control valve, and an outlet of the solar heat collector is communicated with an inlet of the high-temperature medium storage tank; an outlet of the high-temperature medium storage tank is communicated with a first inlet of the first heat exchanger through a second control valve, a first outlet of the first heat exchanger is communicated with a second inlet of the solar heat collector through a third control valve, a first outlet of the first heat exchanger is communicated with a first inlet of a fourth heat exchanger through a fourth control valve, and a first outlet of the fourth heat exchanger is communicated with an inlet of the low-temperature medium storage tank;
the second outlet of the first heat exchanger is communicated with the working medium inlet of the first turbine, the working medium outlet of the first turbine is communicated with the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is communicated with the first inlet of the third heat exchanger, the first outlet of the third heat exchanger is communicated with the inlet of the compressor, the outlet of the compressor is communicated with the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is communicated with the second inlet of the first heat exchanger; a second outlet of the third heat exchanger is communicated with a working medium inlet of a second turbine, a working medium outlet of the second turbine is communicated with an inlet of a first cooler, and an outlet of the first cooler is communicated with a second inlet of the third heat exchanger; the outlet of the first cooler is communicated with the second inlet of the third heat exchanger through a first compression pump; the first heat exchanger, the third heat exchanger and the fourth heat exchanger are all shell-and-tube heat exchangers; the second heat exchanger is a printed circuit board heat exchanger.
The utility model discloses a further improvement lies in, still includes: a third turbine and a second cooler; and a second outlet of the fourth heat exchanger is communicated with a working medium inlet of the third turbine, a working medium outlet of the third turbine is communicated with an inlet of the second cooler, and an outlet of the second cooler is communicated with a second inlet of the fourth heat exchanger.
The utility model discloses a further improvement lies in, still includes: a second compression pump; the outlet of the second cooler is communicated with the second inlet of the fourth heat exchanger through a second compression pump.
The utility model discloses a further improvement lies in, high temperature medium storage jar is linked together through the first entry of fifth control flap with the fourth heat exchanger.
The utility model discloses a further improvement lies in, still includes: a first communicating pipe; one end of the first communication pipeline is communicated with an outlet of the high-temperature medium storage tank; and the other end of the first communication pipeline is communicated with a pipeline between the first outlet of the first heat exchanger and the fourth control valve.
The utility model has the further improvement that the effective work period is 6: 00-20: 00; the system efficiency is 40% -50%.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a heating power energy storage circulation system of adaptable illumination change can promote solar photothermal power's stability and generating efficiency, and the device operation flexibility is high, easily promotes. Specifically, in the utility model, the solar energy absorption and storage subsystem is composed of a low-temperature medium storage tank, a solar heat collector, a high-temperature medium storage tank, a first heat exchanger, a fourth heat exchanger and four groups of control valves of 101, 102, 103 and 104, and the solar energy absorption and storage subsystem is used for absorbing solar energy under low illumination intensity; the solar photo-thermal power generation system is provided for a heat source under high illumination intensity, the working time of the system can be prolonged, the system power generation output curve under the change of the solar illumination intensity is smoothed, and the stability of the solar photo-thermal power generation is improved. The utility model discloses in, supercritical carbon dioxide releases energy subsystem comprises first heat exchanger, first turbine, second heat exchanger, third heat exchanger, compressor, second turbine, first cooler, first compression pump, adopts supercritical carbon dioxide to release energy subsystem as main power generation system, can promote solar energy system generating efficiency, guarantees the system electricity generation economic nature.
The utility model discloses organic working medium energy release subsystem comprises fourth heat exchanger, third turbine, second cooler, second compression pump. By adopting the organic working medium energy release subsystem, the waste heat can be utilized to the maximum extent, and the economic benefit of the whole system is further improved.
The utility model discloses in, high temperature medium storage jar directly communicates fourth heat exchanger, when high temperature medium storage jar storage medium is not enough to drive supercritical carbon dioxide circulation, can only let its drive organic working medium energy release subsystem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram of a thermal energy storage cycle device capable of adapting to illumination changes according to an embodiment of the present invention;
in fig. 1, cryogenic medium storage tank; 2. a solar heat collector; 3. a high-temperature medium storage tank; 4. a first heat exchanger; 5. a first turbine; 6. a second heat exchanger; 7. a third heat exchanger; 8. a compressor; 9. a second turbine; 10. a first cooler; 11. a first compression pump; 12. a fourth heat exchanger; 13. a third turbine; 14. a second cooler; 15. a second compression pump;
101. a first control valve; 102. a second control valve; 103. a third control valve; 104. and a fourth control valve.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention; obviously, the described embodiments are some of the embodiments of the present invention. Based on the embodiments disclosed in the present invention, other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Referring to fig. 1, a thermal energy storage cycle device capable of adapting to illumination change according to an embodiment of the present invention includes: the system comprises a low-temperature medium storage tank 1, a solar heat collector 2, a high-temperature medium storage tank 3, a first heat exchanger 4, a first turbine 5, a second heat exchanger 6, a third heat exchanger 7, a compressor 8, a second turbine 9, a first cooler 10, a first compression pump 11, a fourth heat exchanger 12, a third turbine 13, a second cooler 14 and a second compression pump 15.
In addition, the system also comprises a first control valve 101, a second control valve 102, a third control valve 103 and a fourth control valve 104.
The solar energy absorption and storage subsystem consists of four groups of control valves, namely a low-temperature medium storage tank 1, a solar heat collector 2, a high-temperature medium storage tank 3, a first heat exchanger 4, a fourth heat exchanger 12 and a liquid crystal display panel 101 and 104.
An outlet of the low-temperature medium storage tank 1 is connected to a first inlet of the solar heat collector 2 through a first control valve 101, an outlet of the solar heat collector 2 is connected to the high-temperature medium storage tank 3, an outlet of the high-temperature medium storage tank 3 is connected to a first inlet of the first heat exchanger 4 through a second control valve 102, a first outlet of the first heat exchanger 4 is connected to a second inlet of the solar heat collector 2 through a third control valve 103 and is connected to a first inlet of the fourth heat exchanger 12 through a fourth control valve 104, and a first outlet of the fourth heat exchanger 12 is connected to an inlet of the low-temperature medium storage tank 1.
The supercritical carbon dioxide energy release subsystem is composed of a first heat exchanger 4, a first turbine 5, a second heat exchanger 6, a third heat exchanger 7, a compressor 8, a second turbine 9, a first cooler 10 and a first compression pump 11.
The second outlet of the first heat exchanger 4 is connected to the first turbine 5, the first turbine 5 is connected to the first inlet of the second heat exchanger 6, the first outlet of the second heat exchanger 6 is connected to the first inlet of the third heat exchanger 7, the first outlet of the third heat exchanger 7 is connected to the compressor 8, the outlet of the compressor 8 is connected to the second inlet of the second heat exchanger 6, and the second outlet of the second heat exchanger 6 is connected to the second inlet of the first heat exchanger 4. The second outlet of the third heat exchanger 7 is connected to a second turbine 9, the outlet of the second turbine 9 being connected to a first cooler 10 and thereafter to a first compressor pump 11, the first compressor pump 11 being connected to the second inlet of the third heat exchanger 7.
Preferably, the organic working medium energy release subsystem consists of a fourth heat exchanger 12, a third turbine 13, a second cooler 14 and a second compression pump 15. A second outlet of the fourth heat exchanger 12 is connected to a third turbine 13, an outlet of the third turbine 13 is connected to a second cooler 14, an outlet of the second cooler 14 is connected to a second compression pump 15, and an outlet of the second compression pump 15 is connected to a second inlet of the fourth heat exchanger 12.
The utility model discloses heating power energy storage circulating device's that adaptable illumination changes workflow, include:
stage 1: after sunrise, when the solar light is weak, the first control valve 101 is opened, the second control valves 102, 103 and 104 are closed, and the solar energy absorption and storage subsystem starts to work: working media in the low-temperature medium storage tank 1 flow into the solar heat collector 2 through the first control valve 101, and absorb solar energy in the solar heat collector 2 to finish heating and storing to the high-temperature medium storage tank 3;
and (2) stage: when the solar illumination intensity gradually increases, the first control valves 101 and 104 are closed, the second control valves 102 and 103 are opened, and the solar energy absorption and storage subsystem and the supercritical carbon dioxide energy release subsystem start to work: the high-temperature medium in the high-temperature medium storage tank 3 flows out to the first heat exchanger 4 through the second control valve 102, the medium releases heat in the first heat exchanger 4 to the supercritical carbon dioxide energy release subsystem, and then flows to the solar heat collector 2 through the third control valve 103 to be heated and returns to the high-temperature medium storage tank 3 to form a cycle; the supercritical carbon dioxide enters the first heat exchanger 4 through the second inlet of the first heat exchanger 4 to absorb heat and raise temperature, then flows out of the second outlet of the first heat exchanger 4 to the first turbine 5 to complete expansion work and power generation, then enters the second heat exchanger 6 and the third heat exchanger 7 to lower temperature, then flows into the compressor 8 to boost pressure, and finally enters the second heat exchanger 6 through the second inlet of the second heat exchanger 6 to absorb heat and returns to the first heat exchanger 4 to complete circulation; the organic working medium enters the third heat exchanger 7 from the second inlet of the third heat exchanger 7 to absorb the heat of the supercritical carbon dioxide, then enters the second turbine 9 to do work through expansion, then flows into the first compression pump 11 through the first cooler 10, returns to the second inlet of the third heat exchanger 7 after compression is completed, and completes circulation.
Preferably, stage 3: in the evening, when the solar illumination intensity is gradually reduced, the first control valves 101 and 103 are closed, the second control valves 102 and 104 are opened, and the supercritical carbon dioxide energy release subsystem and the organic working medium energy release subsystem start to work: the working flow of the supercritical carbon dioxide energy release subsystem is the same as the above; the organic working medium enters the fourth heat exchanger 12 from the second inlet of the fourth heat exchanger 12 to absorb heat of the high-temperature medium, then enters the third turbine 13 to do work through expansion, then flows into the second compression pump 15 through the second cooler 14, returns to the second inlet of the fourth heat exchanger 12 after compression is completed, and completes circulation.
Preferably, a pipeline for directly communicating the high-temperature medium storage tank 3 to the control valve 14 can be added, and when the medium stored in the high-temperature medium storage tank 3 is not enough to drive the supercritical carbon dioxide cycle, only the high-temperature medium storage tank is allowed to drive the organic working medium energy release subsystem.
Preferably, the solar irradiance is initially 400W/m or more2The time judgment is carried out to enter a stage 2, and the solar illumination intensity is less than or equal to 100W/m2It is decided to enter stage 3.
The utility model discloses can realize: and adjusting a proper energy storage or energy release strategy according to the change of the solar illumination intensity, so as to realize the effective utilization and the effective energy storage of the solar energy.
To sum up, the utility model provides a heating power energy storage circulation system that adaptation illumination changes can realize user's solar energy self-adaptation storage and utilization. The method has the following specific advantages: the solar energy absorption and storage subsystem is used for absorbing solar energy under low illumination intensity and providing the solar energy to a heat source under high illumination intensity, so that the working time of the system can be increased, the power generation output curve of the system under the change of the solar illumination intensity can be smoothed, and the stability of solar photo-thermal power generation is improved; the supercritical carbon dioxide energy release subsystem is adopted as a main power generation system, so that the power generation efficiency of the solar system can be improved, and the power generation system can protectThe system electricity generation economy is guaranteed; by adopting the organic working medium energy release subsystem, the waste heat can be utilized to the maximum extent, and the economic benefit of the whole system is further improved; through the utility model provides a workflow can increase the flexibility and the adaptability of system operation. The utility model discloses a thermal power energy storage circulation system that adaptation illumination changes can promote solar photothermal power's stability and generating efficiency, and the device operation flexibility is high, easily promotes. Specifically, 1, the traditional conventional photo-thermal power generation technology can only be used when the illumination intensity is more than or equal to 400W/m2The time period of the utility model is about eight hours, the effective work period is about 8:30 to 16:30, the utility model can work stably in the sunrise to the time of the part behind the sunrise, the effective work period is about fourteen hours from 6:00 to 20:00, and the work duration is obviously improved; 2. the turbine inlet temperature in the traditional conventional photo-thermal power generation technology is greatly influenced by the solar illumination intensity, the system is in variable working condition operation, and the power generation efficiency can decline to 50 percent or even lower when the system is serious; 3. the traditional conventional photo-thermal power generation technology is mostly steam cycle, not only the device is bulky, and system efficiency is only about 20-30%, and the utility model discloses use the form that supercritical carbon dioxide and organic rankine cycle combined together, each device is small, is about 1/10 of steam cycle, and system efficiency can break through 40-50%, has high competitive advantage.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (5)
1. A thermal energy storage circulating device capable of adapting to illumination change is characterized by comprising: the system comprises a low-temperature medium storage tank (1), a solar heat collector (2), a high-temperature medium storage tank (3), a first heat exchanger (4), a first turbine (5), a second heat exchanger (6), a third heat exchanger (7), a compressor (8), a second turbine (9), a first cooler (10), a first compression pump (11) and a fourth heat exchanger (12);
an outlet of the low-temperature medium storage tank (1) is communicated with a first inlet of a solar heat collector (2) through a first control valve (101), and an outlet of the solar heat collector (2) is communicated with an inlet of the high-temperature medium storage tank (3); an outlet of the high-temperature medium storage tank (3) is communicated with a first inlet of a first heat exchanger (4) through a second control valve (102), a first outlet of the first heat exchanger (4) is communicated with a second inlet of a solar heat collector (2) through a third control valve (103), a first outlet of the first heat exchanger (4) is communicated with a first inlet of a fourth heat exchanger (12) through a fourth control valve (104), and a first outlet of the fourth heat exchanger (12) is communicated with an inlet of the low-temperature medium storage tank (1);
a second outlet of the first heat exchanger (4) is communicated with a working medium inlet of the first turbine (5), a working medium outlet of the first turbine (5) is communicated with a first inlet of the second heat exchanger (6), a first outlet of the second heat exchanger (6) is communicated with a first inlet of the third heat exchanger (7), a first outlet of the third heat exchanger (7) is communicated with an inlet of the compressor (8), an outlet of the compressor (8) is communicated with a second inlet of the second heat exchanger (6), and a second outlet of the second heat exchanger (6) is communicated with a second inlet of the first heat exchanger (4); a second outlet of the third heat exchanger (7) is communicated with a working medium inlet of the second turbine (9), a working medium outlet of the second turbine (9) is communicated with an inlet of the first cooler (10), and an outlet of the first cooler (10) is communicated with a second inlet of the third heat exchanger (7) through a first compression pump (11);
the first heat exchanger (4), the third heat exchanger (7) and the fourth heat exchanger (12) are all shell-and-tube heat exchangers; the second heat exchanger (6) is a printed circuit board heat exchanger.
2. A thermal energy storage cycle device adaptable to illumination variation as claimed in claim 1, further comprising: a third turbine (13) and a second cooler (14);
the second outlet of the fourth heat exchanger (12) is communicated with the working medium inlet of the third turbine (13), the working medium outlet of the third turbine (13) is communicated with the inlet of the second cooler (14), and the outlet of the second cooler (14) is communicated with the second inlet of the fourth heat exchanger (12).
3. A thermal energy storage cycle device adaptable to illumination variation as claimed in claim 2, further comprising: a second compression pump (15); the outlet of the second cooler (14) is communicated with the second inlet of the fourth heat exchanger (12) through a second compression pump (15).
4. A thermal energy storage cycle device capable of adapting to illumination variation according to claim 1, characterized in that the high temperature medium storage tank (3) is communicated with the first inlet of the fourth heat exchanger (12) through a fifth control valve.
5. A thermal energy storage cycle device adaptable to illumination variation as claimed in claim 1, further comprising: a first communicating pipe;
one end of the first communication pipeline is communicated with an outlet of the high-temperature medium storage tank (3);
the other end of the first communication pipeline is communicated with a pipeline between a first outlet of the first heat exchanger (4) and the fourth control valve (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263153.6U CN211230729U (en) | 2019-12-16 | 2019-12-16 | Thermal energy storage circulating device capable of adapting to illumination change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263153.6U CN211230729U (en) | 2019-12-16 | 2019-12-16 | Thermal energy storage circulating device capable of adapting to illumination change |
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| Publication Number | Publication Date |
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| CN211230729U true CN211230729U (en) | 2020-08-11 |
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| CN201922263153.6U Active CN211230729U (en) | 2019-12-16 | 2019-12-16 | Thermal energy storage circulating device capable of adapting to illumination change |
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| CN (1) | CN211230729U (en) |
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