CN114183938B - Particle heat absorber and solar power generation system - Google Patents
Particle heat absorber and solar power generation system Download PDFInfo
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- CN114183938B CN114183938B CN202111442258.3A CN202111442258A CN114183938B CN 114183938 B CN114183938 B CN 114183938B CN 202111442258 A CN202111442258 A CN 202111442258A CN 114183938 B CN114183938 B CN 114183938B
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- particle
- working medium
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- rotary shell
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
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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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/10—Details of absorbing elements characterised by the absorbing material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Abstract
The invention provides a particle heat absorber and a solar power generation system, wherein the particle heat absorber comprises: the particle heat exchanger is internally provided with a particle channel and a working medium channel, and the working medium channel is in heat transfer contact with the particle channel; the rotary shell can rotate around the axis under the drive of external force, the output end of the particle channel is communicated with the inner cavity of the rotary shell, and particles output by the particle channel fall along the inner side wall surface of the rotary shell; the heat absorption tube group is arranged outside the rotary shell in a surrounding mode, phase change working media are filled in the heat absorption tube group, the output end of the heat absorption tube group is communicated with the input end of the working medium channel, and the input end of the heat absorption tube group is communicated with the output end of the working medium channel. Compared with the traditional centrifugal heat absorber, the particle heat absorber provided by the invention has a larger mirror field arrangement scale on the premise of not increasing the height of the heat absorbing tower, reduces the unit investment cost of a power station, and improves the overall heat absorbing efficiency of the particle heat absorber.
Description
Technical Field
The invention relates to the technical field of solar thermal power generation, in particular to a particle heat absorber and a solar power generation system.
Background
The solid particles are low in price and high in heat storage temperature, and are one of the most potential technologies in the third-generation tower type photo-thermal power generation technology. The particle heat absorber is one of core equipment in the particle photo-thermal power generation technology, and has the main function of converting solar energy into heat energy. Currently, particle heat sinks are of many types, including free-fall, choked flow, gravity-driven, counter-current fluidized bed, centrifugal, and the like. The centrifugal particle heat absorber is one of the main flow forms of particle cavity heat absorbers, and has the main advantages of controllable particle residence time and uniform particle temperature. The centrifugal heat absorber belongs to a cavity type heat absorber, and only the opening of the heat absorber is in contact with the external environment, so that the efficiency advantage is obvious in comparison with the external heat absorber in a high-temperature heat absorption section (more than 600 ℃). Centrifugal heat absorbers can be classified into an inclined arrangement and a vertical arrangement according to the opening direction. The opening direction of the inclined arrangement faces to a single side, the arrangement of the mirror field is limited, and a plurality of devices are required to be arranged in multiple directions at the same time, so that the investment cost and the operation difficulty are increased. The vertical arrangement can receive solar energy of a 360 ° circular mirror field, but the mirror field size is highly affected by the absorber, so the mirror field size is also limited in view of absorber tower cost factors.
In the prior art, an external heat absorber is common to a fused salt heat absorber, and the contact area between the external heat absorber and the external environment is large, so that the high heat absorption efficiency can be ensured in a low-temperature range below 600 ℃, but the heat absorption efficiency is greatly reduced after the heat absorption temperature is continuously increased. The external heat absorber can receive solar energy of 360-degree mirror fields in all directions of the circular mirror field, so that the photo-thermal power station is large in scale, and the investment cost of a power station unit is reduced due to scale effect.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the particle heat absorber, which increases the arrangement scale of a lens field and reduces the investment cost of a power station unit while improving the heat absorption efficiency and controlling the cost of a heat absorption tower; in addition, the invention also provides a solar power generation system.
A first aspect of the invention provides a particulate heat sink comprising:
the particle heat exchanger is internally provided with a particle channel and a working medium channel, and the working medium channel is in heat transfer contact with the particle channel;
the rotary shell is of a hollow structure with openings at the upper end and the lower end, the rotary shell can rotate around the axis of the rotary shell under the drive of external force, the output end of the particle channel is communicated with the inner cavity of the rotary shell, and particles output by the particle channel fall along the inner side wall surface of the rotary shell;
the heat absorption tube group is arranged outside the rotary shell in a surrounding mode, phase change working mediums are filled in the heat absorption tube group, the output end of the heat absorption tube group is communicated with the input end of the working medium channel, and the input end of the heat absorption tube group is communicated with the output end of the working medium channel.
The phase change working medium in the heat absorption tube group absorbs solar energy reflected by the peripheral mirror field and then is in heat transfer contact with cold particles in the particle heat exchanger, the primary heating is finished, the primary heating enters the rotary shell through the first opening, the rotary shell is in a rotary state under the action of external force, the particles fall down in a rotary mode on the inner side wall surface of the rotary shell due to the action of the centrifugal force, meanwhile, the solar energy reflected by the central circular mirror field is absorbed, the particles are secondarily heated to the design temperature, and finally hot particles flow out through the second opening.
The heat absorption tube group is responsible for receiving solar energy reflected by the peripheral mirror field, and the rotary shell is responsible for receiving solar energy reflected by the round mirror field right below, so that the round mirror field can be arranged on a large scale on the premise that the tower height of the heat absorption tower is not increased;
the heat absorption tube group is an external heat absorption module for absorbing heat of solid particles, has higher heat absorption efficiency for absorbing heat at low temperature (below 600 ℃), is responsible for primary heating of cold particles, and the rotary shell is a centrifugal heat absorption module, belongs to a chamber heat absorber, has higher heat absorption efficiency for absorbing heat at high temperature (above 600 ℃), and is responsible for secondary heating of particles;
the peripheral lens field efficiency is lower, the low temperature rise temperature range of the external heat absorption module formed by the heat absorption tube group is responsible, the central circular lens field efficiency is higher, and the high temperature rise temperature range of the centrifugal heat absorption module formed by the rotary shell is responsible, so that the particle heat absorber provided by the invention has the advantages that the lens field arrangement scale is increased while the height of the heat absorption tower is not increased, the unit investment cost of a power station is reduced, and the integral heat absorption efficiency is also improved.
In one embodiment of the present invention, the heat absorbing tube set includes:
the output end of the gas phase working medium collecting box is communicated with the input end of the working medium channel;
the input end of the liquid phase working medium collecting box is communicated with the output end of the working medium channel;
the heat absorption pipe is filled with phase change working medium, and two ends of the heat absorption pipe are respectively communicated with the input end of the gas phase working medium collecting box and the output end of the liquid phase working medium collecting box. In one embodiment of the invention, the phase change working medium is a liquid phase working medium.
In an embodiment of the invention, a plurality of heat absorbing pipes are provided, and a plurality of heat absorbing pipes are circumferentially arranged outside the rotary housing, and a central axis of each heat absorbing pipe is parallel to a central axis of the rotary housing. When the particle heat absorber is in a working state, liquid-phase working media in the heat absorption tube absorb solar energy reflected by a peripheral mirror field, evaporate to form gas-phase working media, collect the gas-phase working media in a gas-phase working media collecting box, then enter the particle heat exchanger to exchange heat with cold particles in a particle channel, heat the cold particles once, condense the gas-phase working media into the liquid-phase working media, and automatically flow into the liquid-phase working media collecting box to complete working media circulation; the cold particles which are subjected to primary heat exchange through the particle heat exchanger enter the rotary shell, the rotary shell is in a rotary state under the action of external force, the particles fall down in the rotary shell due to the rotation of the inner wall of the rotary shell under the action of the centrifugal force, solar energy reflected by the central circular mirror field is absorbed, the particles are secondarily heated to the design temperature, and finally hot particles flow out through the second opening.
In one embodiment of the invention, the device further comprises a particle distributor;
the particle distributing device comprises a material distributing part and a flow guiding part which are sequentially connected from top to bottom, a material distributing runner is arranged in the material distributing part, the flow guiding part is positioned in the rotary shell, a first flow guiding gap is formed between the flow guiding part and the inner side wall surface of the rotary shell, the input end of the material distributing runner is communicated with the output end of the particle channel, and the output end of the material distributing runner is communicated with the first flow guiding gap.
The particles which are subjected to primary heat exchange through the particle heat exchanger are uniformly distributed in the rotary shell through the particle distributor, so that uniform heat absorption of the particles in the rotary shell is ensured, and the temperature uniformity of the particles output through the rotary shell is further ensured. In an embodiment of the invention, the material distribution flow passage comprises a cylindrical material distribution flow passage and a conical annular material distribution flow passage which are communicated sequentially from top to bottom, and the output end of the particle passage is communicated with the cylindrical material distribution flow passage. Particles subjected to primary heat exchange through the particle heat exchanger enter the cylindrical distribution runner and are distributed on the inner side wall surface of the rotary shell along the conical annular distribution runner, so that uniform distribution of the particles is realized. In an embodiment of the present invention, a particle flow rate adjusting valve is disposed on an output end of the particle channel, and the particle flow rate adjusting valve is used for adjusting a particle circulation speed according to adjustment of illumination conditions.
In one embodiment of the invention, further comprising a particle collector;
the particle collector comprises a material receiving part and a second flow guiding part which are sequentially arranged from top to bottom, a material receiving flow channel is arranged in the material receiving part, the second flow guiding part is positioned in the rotary shell, a second flow guiding gap is formed between the second flow guiding part and the inner side wall surface of the rotary shell, the input end of the material receiving flow channel corresponds to the position of the second flow guiding gap, and the second flow guiding gap corresponds to the position of the first flow guiding gap. And particles which finish heat absorption in the rotary shell enter the material collecting flow passage through the second flow guide gap.
In one embodiment of the present invention, the rotating body gear is disposed on the rotating housing at both ends along the axial direction thereof; the rotary shell is meshed with a driving gear on the driving mechanism conveniently through the rotary body gear, so that the rotation of the rotary shell is realized. In a second aspect, the invention provides a solar power generation system comprising a particulate absorber as described above.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the traditional centrifugal heat absorber, the particle heat absorber provided by the embodiment of the invention has the advantages that the particle heat absorber provided by the embodiment of the invention has a larger mirror field arrangement scale on the premise of not increasing the height of a heat absorption tower, and the unit investment cost of a power station is reduced.
2. In the particle absorber provided by the embodiment of the invention, the external heat absorption module formed by the heat absorption tube group is matched with the low-temperature part responsible for particle heating by the peripheral mirror field, the centrifugal heat absorption module formed by the rotary shell is matched with the high-temperature part responsible for particle heating by the central circular mirror field, and the external heat absorption module and the peripheral mirror field are both in a dominant temperature region with higher efficiency, namely, the particle absorber provided by the embodiment of the invention utilizes the heat absorption temperature interval with the respective efficiency advantages of the external heat absorber and the centrifugal heat absorber, so that the overall heat absorption efficiency of the particle absorber is improved.
3. According to the particle heat absorber provided by the embodiment of the invention, the heat exchange between the vaporization latent heat of the phase change working medium in the heat absorption tube group and the cold particles in the particle heat exchanger is realized, so that the temperature of the gas phase working medium is uniform, the temperature of the cold particles after heat exchange in the particle heat exchanger is uniform, the residence time of the particles in the rotary shell is controllable (the residence time of the particles in the rotary shell can be controlled by adjusting the rotation speed of the rotary shell), and the temperature of the particles after secondary heating in the rotary shell is uniform.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a particle heat absorber device in example 1;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of the portion A' of FIG. 2;
fig. 4 is an enlarged view of the B' portion structure in fig. 2.
The correspondence between each mark and the part name is as follows:
the device comprises a heat absorption pipe 1, a liquid phase working medium collecting box 2, a gas phase working medium collecting box 3, a particle heat exchanger 4, a particle flow regulating valve 5, a particle distributor 6, a distributing part 601, a flow guiding part 602, a first flow guiding gap 603, a cylindrical distributing flow passage 604, a conical annular distributing flow passage 605, a rotary shell 7, a rotary body gear 701, a particle collector 8, a material collecting part 801, a second flow guiding part 802, a second flow guiding gap 803, a circular annular material collecting flow passage 804, a conical annular material collecting flow passage 805 and particles 9.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Examples
Referring to fig. 1 and 2, the present embodiment provides a particle heat absorber, including:
the particle heat exchanger 4 is internally provided with a particle channel and a working medium channel, and the working medium channel is in heat transfer contact with the particle channel;
the rotary shell 7 is a hollow interface with openings at the upper end and the lower end, the rotary shell 7 can rotate around the axis under the drive of external force, the output end of the particle channel is communicated with the inner cavity of the rotary shell, and particles 9 output by the output end of the particle channel fall along the inner side wall surface of the rotary shell 7;
the heat absorption pipe group is arranged outside the rotary shell 7 in a surrounding manner; the heat absorption tube group is filled with phase change working medium, the output end of the heat absorption tube group is communicated with the input end of the working medium channel, and the input end of the heat absorption tube group is communicated with the output end of the working medium channel.
In this embodiment, the heat absorbing tube group is responsible for receiving solar energy reflected by the peripheral mirror field, and the rotary housing 7 is responsible for receiving solar energy reflected by the circular mirror field right below, so that compared with the conventional centrifugal heat absorber, the particle heat absorber in this embodiment can increase the mirror field size of the vertical opening off-line heat absorber without increasing the tower height of the heat absorbing tower.
In this embodiment, the heat absorbing tube set in the present invention is an external heat absorbing module for absorbing heat of solid particles, has higher heat absorbing efficiency for absorbing heat at low temperature (below 600 ℃), is responsible for primary heating of cold particles, and the rotary housing 7 is a centrifugal heat absorbing module, belongs to a chamber heat absorber, has higher heat absorbing efficiency for absorbing heat at high temperature (above 600 ℃), and is responsible for secondary heating of particles; the peripheral lens field efficiency is lower, the low temperature rise temperature range of the external heat absorption module formed by the heat absorption tube group is responsible, the central circular lens field efficiency is higher, and the high temperature rise temperature range of the centrifugal heat absorption module formed by the rotary shell 7 is responsible, so that the particle heat absorber provided by the invention has the advantages that the lens field arrangement scale is increased while the height of the heat absorption tower is not increased, the unit investment cost of a power station is reduced, and the integral heat absorption efficiency is also improved.
Specifically, referring to fig. 1, the heat absorbing tube group in the present embodiment includes:
the output end of the gas phase working medium collecting box 3 is communicated with the input end of the working medium channel;
the input end of the liquid phase working medium collection box 2 is communicated with the output end of the working medium channel;
the heat absorption pipe 1 is filled with phase change working medium, and two ends of the heat absorption pipe 1 are respectively communicated with the input end of the gas phase working medium collecting box 3 and the output end of the liquid phase working medium collecting box 2.
The phase change working medium in the embodiment is a liquid phase working medium. Under the working condition, the phase-change working medium in the heat absorption tube 1 absorbs solar energy reflected by the mirror field and is converted into gaseous phase-change working medium, the gaseous phase-change working medium flows into the working medium channel and transfers heat to particles in the particle channel, and then the gaseous phase-change working medium is converted into liquid phase-change working medium and flows back into the heat absorption tube 1, so that working medium circulation is completed.
In the present embodiment, a plurality of heat absorbing pipes 1 are provided, and a plurality of heat absorbing pipes 1 are circumferentially provided outside the rotary housing 7, with the central axis of the heat absorbing pipe 1 and the central axis of the rotary housing being parallel to each other.
Referring to fig. 2, in this embodiment, the particle absorber further includes a particle distributor 6;
the particle distributing device 6 comprises a distributing part 601 and a flow guiding part 602 which are sequentially connected from top to bottom, a distributing flow channel is formed in the distributing part, the flow guiding part 602 is located in the rotary shell 7, a first flow guiding gap 603 is formed between the flow guiding part 602 and the inner side wall surface of the rotary shell 7, the input end of the distributing flow channel is communicated with the output end of the particle channel, and the output end of the distributing flow channel is communicated with the first flow guiding gap 603.
Wherein, the cloth runner includes cylindrical cloth runner 604, circular cone annular cloth runner 605 that from top to bottom communicates in proper order, the output of granule passageway with cylindrical cloth runner 604 intercommunication. The large diameter end of the conical annular cloth flow passage 605 is positioned below the small diameter end. The cylindrical material distribution flow passage 604 is matched with the conical annular material distribution flow passage 605, so that particles 9 subjected to heat exchange by the particle heat exchanger are smoothly and uniformly distributed on the inner side wall surface of the rotary shell 7.
Particles 9 output through the distributing member 601 enter the first guide gap 603 and fall down along the inner side wall surface of the rotary housing 7 in the rotary housing 7. The particles 9 subjected to primary heat exchange through the particle heat exchanger 4 are uniformly distributed on the inner side wall surface of the rotary shell 7 through the particle distributor 6, so that uniform heat absorption of the particles 9 in the rotary shell 7 is ensured, and uniform temperature of the particles 9 output by the rotary shell 7 is further ensured.
In this embodiment, the output end of the particle channel is provided with a particle flow regulating valve 5, and the particle flow regulating valve 5 is used for regulating the particle circulation speed according to the regulation of the illumination condition.
Referring to fig. 2, in this embodiment, the particle absorber further comprises a particle collector 8;
the particle collector 8 comprises a material receiving part 801 and a second guide part 802 which are sequentially arranged from top to bottom, a material receiving flow channel is arranged in the material receiving part 801, the input end of the material receiving flow channel corresponds to the position of the first guide gap 603, the second guide part 802 is positioned in the rotary shell, a second guide gap 803 is formed between the second guide part 802 and the inner side wall surface of the rotary shell 7, and the position of the first guide gap 603 corresponds to the position of the second guide gap 803.
The material collecting flow passage comprises a circular ring-shaped material collecting flow passage 804 and a conical ring-shaped material collecting flow passage 805 which are sequentially communicated from top to bottom, and the circular ring-shaped material collecting flow passage 804 corresponds to the second guide gap 803 in position. The large diameter end of the conical annular receiving channel 805 is located below the small diameter end.
Particles 9 falling down to the lower opening end of the rotary housing 7 along the inner side wall surface of the rotary housing 7 enter the material collecting flow passage through the second flow guiding gap 803.
Referring to fig. 2, in the present embodiment, a rotary body gear 701 is provided on both ends of a rotary housing 7 in the axial direction thereof; the rotation of the rotary housing 7 is achieved by the rotary body gear 701 facilitating engagement of the rotary housing 7 with a drive gear on the drive mechanism.
The flow of the particle absorber according to the present embodiment in the operating state is described below with reference to fig. 1 to 4:
the phase change working medium in the heat absorption pipe 1 absorbs solar energy reflected by the peripheral mirror field, evaporates to form a gas phase working medium, is collected in the gas phase working medium collecting box 3, then enters the particle heat exchanger 4 to exchange heat with cold particles in the particle channel, heats the cold particles once, condenses the gas phase working medium into a liquid phase working medium, automatically flows into the liquid phase working medium collecting box 2, and completes working medium circulation;
the particles after primary heating enter the rotary shell through the particle distributor 6, the rotary shell 7 is in a rotary state under the action of external force, the particles 9 fall in the rotary shell 7 along the inner side wall surface of the rotary shell 7 due to the action of the centrifugal force, meanwhile, the particles are secondarily heated to the design temperature by absorbing solar energy reflected by the central circular mirror field, and finally the hot particles 9 flow out through the particle collector 8.
In this embodiment, the temperature of the gas phase working medium is uniform in the primary particle heating process, so that the temperature of the cold particles is uniform after heat exchange in the particle heat exchanger 4, and when the particles are secondarily heated in the rotary shell 7, the residence time of the particles in the rotary shell 7 is controllable, so that the temperature of the particles after secondary heating in the rotary shell 7 is also uniform, and therefore, the particle heat absorber in this embodiment can ensure that the particle heat absorbing process is controllable and the temperature is uniform.
Example 2
The present embodiment provides a solar power generation system including the particulate absorber in embodiment 1 described above. The particle absorber has the advantages that the primary heating and the secondary heating are respectively carried out on particles through the combination and the cooperation of the heat absorption tube group and the rotary shell, the larger mirror field arrangement scale is realized on the premise of not increasing the height of the heat absorption tower, the unit investment cost of a power station is reduced, and the overall heat absorption efficiency of the particle absorber is improved.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. A particulate heat sink comprising:
the particle heat exchanger is internally provided with a particle channel and a working medium channel, and the working medium channel is in heat transfer contact with the particle channel;
the rotary shell is of a hollow structure with openings at the upper end and the lower end, the rotary shell can rotate around the axis of the rotary shell under the drive of external force, the output end of the particle channel is communicated with the inner cavity of the rotary shell, and particles output by the particle channel fall along the inner side wall surface of the rotary shell;
the heat absorption tube group is arranged outside the rotary shell in a surrounding manner, phase change working mediums are filled in the heat absorption tube group, the output end of the heat absorption tube group is communicated with the input end of the working medium channel, and the input end of the heat absorption tube group is communicated with the output end of the working medium channel;
the heat absorption tube group is responsible for receiving solar energy reflected by the peripheral mirror field, and the rotary shell is responsible for receiving solar energy reflected by the central circular mirror field.
2. The particulate heat sink of claim 1 wherein the heat sink stack comprises:
the output end of the gas phase working medium collecting box is communicated with the input end of the working medium channel;
the input end of the liquid phase working medium collecting box is communicated with the output end of the working medium channel;
the phase change working medium is filled in the heat absorption pipe, and two ends of the heat absorption pipe are respectively communicated with the input end of the gas phase working medium collecting box and the output end of the liquid phase working medium collecting box.
3. The particulate heat sink of claim 2 wherein the heat sink tube is provided in plurality and the heat sink tube is provided in plurality around the outside of the rotary housing, the heat sink tube having a central axis parallel to the central axis of the rotary housing.
4. The particulate heat sink of claim 1 further comprising a particulate distributor;
the particle distributing device comprises a material distributing part and a flow guiding part which are sequentially connected from top to bottom, a material distributing runner is arranged in the material distributing part, the flow guiding part is positioned in the rotary shell, a first flow guiding gap is formed between the flow guiding part and the inner side wall surface of the rotary shell, the input end of the material distributing runner is communicated with the output end of the particle channel, and the output end of the material distributing runner is communicated with the first flow guiding gap.
5. The particulate heat sink of claim 4 wherein the distribution flow path comprises a cylindrical distribution flow path, a conical annular distribution flow path, which are sequentially communicated from top to bottom, and an output end of the particulate flow path is in communication with the cylindrical distribution flow path.
6. The particulate heat sink of claim 4 wherein the particulate channel has a particulate flow control valve on an output thereof.
7. The particulate heat sink of claim 4 further comprising a particulate collector;
the particle collector comprises a material receiving part and a second flow guiding part which are sequentially arranged from top to bottom, a material receiving flow channel is arranged in the material receiving part, the second flow guiding part is positioned in the rotary shell, a second flow guiding gap is formed between the second flow guiding part and the inner side wall surface of the rotary shell, the input end of the material receiving flow channel corresponds to the position of the second flow guiding gap, and the second flow guiding gap corresponds to the position of the first flow guiding gap.
8. The particulate heat sink of claim 7, wherein the material receiving flow passage comprises an annular material receiving flow passage and a conical annular material receiving flow passage which are sequentially communicated from top to bottom, and the annular material receiving flow passage corresponds to the second flow guiding gap.
9. The particulate heat sink of claim 1, wherein the rotary housing is provided with rotary gears at both ends in an axial direction thereof.
10. A solar power generation system comprising a particulate heat sink according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111442258.3A CN114183938B (en) | 2021-11-30 | 2021-11-30 | Particle heat absorber and solar power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111442258.3A CN114183938B (en) | 2021-11-30 | 2021-11-30 | Particle heat absorber and solar power generation system |
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| CN114183938A CN114183938A (en) | 2022-03-15 |
| CN114183938B true CN114183938B (en) | 2023-08-08 |
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| CN109668341A (en) * | 2018-12-26 | 2019-04-23 | 中国科学院电工研究所 | A kind of multistage solid particle heat dump of tower type solar energy thermal power generation |
| CN113007911A (en) * | 2021-03-01 | 2021-06-22 | 中国电力工程顾问集团华北电力设计院有限公司 | Blocking system for particle falling solar heat absorber |
| CN112728776A (en) * | 2021-04-01 | 2021-04-30 | 浙江高晟光热发电技术研究院有限公司 | External particle heat absorber and solar power generation system |
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