CN109812997B - Flow passage and cavity wall integrated solar cavity heat absorber with heat storage function - Google Patents
Flow passage and cavity wall integrated solar cavity heat absorber with heat storage function Download PDFInfo
- Publication number
- CN109812997B CN109812997B CN201910216347.2A CN201910216347A CN109812997B CN 109812997 B CN109812997 B CN 109812997B CN 201910216347 A CN201910216347 A CN 201910216347A CN 109812997 B CN109812997 B CN 109812997B
- Authority
- CN
- China
- Prior art keywords
- heat
- cavity
- working medium
- heat absorber
- absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 110
- 238000005338 heat storage Methods 0.000 title claims abstract description 55
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 43
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 230000010354 integration Effects 0.000 abstract description 8
- 239000011232 storage material Substances 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- 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
- Y02E10/44—Heat exchange systems
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a heat absorber with a heat storage solar cavity, which integrates a flow passage and a cavity wall, and comprises a heat absorber, a working medium inflow pipe and a working medium outflow pipe; the heat absorber is a cylindrical cavity structure with one end open, and one end of the opening is used for receiving solar energy collected by the solar concentrator; a working medium flow passage is arranged in the side wall of the heat absorbing body; one end of the working medium flow channel is communicated with the working medium inflow pipe, and the other end of the working medium flow channel is communicated with the working medium outflow pipe; the working medium inflow pipe and the working medium outflow pipe are arranged on the heat absorbing body; the outside of the heat absorber is provided with an annular cavity space, and the annular cavity space is filled with a phase-change heat storage medium. The invention not only realizes the functional integration of solar energy absorption and working medium heating of the wall surface of the cavity, but also fills the phase change heat storage material in the annular cavity to realize heat energy storage.
Description
Technical Field
The invention relates to the field of solar concentrating and heat collecting utilization, in particular to a solar cavity heat absorber with heat storage, wherein a flow channel and a cavity wall are integrated.
Background
The concentrating solar thermal power generation technology concentrates solar light energy into a cavity heat absorber through a large-area concentrator and heats fluid working medium in the cavity heat absorber, and then drives a generator set to generate power through a thermodynamic cycle process, so that the concentrating solar thermal power generation technology is one of important forms of solar heat utilization, and is also considered as an important way for solving energy shortage and environmental pollution by developing and utilizing clean and environment-friendly solar resources.
The heat absorber is a core device for light-heat energy conversion in a solar thermal power generation system, and the heat absorber is used for heating fluid working media by using received high-density solar energy. Conventional heat absorbers are typically configured by mounting a metal coil (in-tube working medium heat exchange) within a cavity structure to absorb solar energy and convert it into heat energy, i.e., the metal coil is used to absorb solar radiation energy and heat the flowing working medium within the tube. Because the surface energy flow density of the metal coil is large and the distribution is uneven in actual operation, adverse problems such as uneven temperature distribution, large gradient and the like are easily formed, and further the internal stress of the metal coil is increased (especially when the metal coil is operated in a high-pressure environment), and even the problem that high-temperature hot spots burn through occurs is caused. These directly affect the light-heat conversion efficiency and the operation safety of the heat absorber. On the other hand, the metal coil type heat absorber cannot be directly and integrally designed with the heat storage medium, and an additional design of the heat storage tank is generally required, so that the complexity and the production cost of the heat storage tank are increased.
Disclosure of Invention
In order to solve the technical problems, the invention provides the heat absorber with the heat storage solar cavity, which has the advantages of simple structure, convenient operation, high light-heat conversion efficiency, safety and reliability, integrates the flow channel and the cavity wall, realizes the functional integration of absorbing solar energy and heating working media on the cavity wall surface, and realizes the heat energy storage by filling the phase change heat storage material in the annular cavity.
The technical scheme for solving the problems is as follows:
a heat absorber with a heat storage solar cavity integrating a flow passage and a cavity wall comprises a heat absorber, a working medium inflow pipe and a working medium outflow pipe; the heat absorber is a cylindrical cavity structure with one end open, and one end of the opening is used for receiving solar energy collected by the solar concentrator; a working medium flow passage is arranged in the side wall of the heat absorbing body; one end of the working medium flow channel is communicated with the working medium inflow pipe, and the other end of the working medium flow channel is communicated with the working medium outflow pipe; the working medium inflow pipe and the working medium outflow pipe are arranged on the heat absorbing body; the outside of the heat absorber is provided with an annular cavity space, and the annular cavity space is filled with a phase-change heat storage medium.
In the heat absorber with the heat storage solar cavity with the integrated flow channel and cavity wall, the heat absorber is of an integral structure, a spiral flow channel hole I is formed in the side wall of the heat absorber, a spiral flow channel hole II is formed in the bottom plate of the heat absorber, and the spiral flow channel hole I is communicated with the spiral flow channel hole II to form a working medium flow channel.
In the solar cavity heat absorber with heat storage, the runner and the cavity wall are integrated, and the heat absorber comprises a tubular body, a front cover plate and a rear cover plate; a plurality of vertical runner holes are arranged in the side wall of the tubular body along the axial direction, and the vertical runner holes are uniformly distributed along the circumferential direction; the front end of the tubular body is provided with a front cover plate, and the rear end is provided with a rear cover plate; the front cover plate is of an annular structure with the inner hole radius smaller than or equal to that of the tubular body, and is provided with a plurality of kidney-shaped sinking grooves I which are uniformly distributed along the circumference of the vertical runner hole; the rear cover plate is provided with a plurality of waist-shaped sinking grooves II which are uniformly distributed along the circumference of the vertical runner hole; the kidney-shaped sink groove I and the kidney-shaped sink groove II are arranged in a staggered manner, and a plurality of vertical runner holes are connected into a working medium runner hole; two adjacent waist-shaped sink grooves II on the rear cover plate are respectively connected with a working medium inflow pipe and a working medium outflow pipe.
In the solar cavity heat absorber with the heat storage and integrating the flow channel and the cavity wall, the outer side of the heat absorber is provided with the peripheral plate with a tubular structure, two ends of the peripheral plate are respectively connected with the heat absorber through the front sealing plate and the rear sealing plate, the front sealing plate and the rear sealing plate are both in annular structures, the radius of the inner hole of the front sealing plate is not larger than that of the inner hole of the heat absorber, and the radius of the inner hole of the rear sealing plate is equal to that of the outer circle of the heat absorber; the outer diameters of the front sealing plate and the rear sealing plate are the same as the outer diameter of the peripheral plate; the heat absorbing body, the peripheral plate, the front sealing plate and the rear sealing plate jointly enclose an annular cavity space, and a feed inlet communicated with the annular cavity space is arranged on the front sealing plate. The phase change heat storage medium is supplied into the annular cavity space from the feed inlet.
In the heat absorber with the heat storage solar cavity, the runner and the cavity wall are integrated, the outer wall of the heat absorber is welded with a plurality of heat exchange fins, the plurality of heat exchange fins are uniformly distributed along the circumferential direction, and the heat exchange fins are positioned in the annular cavity space.
In the heat absorber with the heat storage solar cavity, the flow channel and the cavity wall are integrated, and the heat exchange fins are of a columnar structure with rectangular or triangular cross sections; when the section of the heat exchange fin is triangular, the sharp angle points to the outside; the height of the heat exchange fin is the same as that of the heat absorber.
In the heat absorber with the heat storage solar cavity, which is formed by integrating the flow channel and the cavity wall, the inner surface of the heat absorber is coated with a high-temperature-resistant coating with high-efficiency absorption effect on solar energy; the outer side of the bottom plate of the heat absorber and the outer side of the bottom plate of the heat absorber are both wrapped with heat insulation materials.
In the solar cavity heat absorber with heat storage, the runner and the cavity wall are integrated, and transparent quartz glass is arranged at the front end opening of the heat absorber.
In the solar cavity heat absorber with heat storage, the flow channel and the cavity wall are integrated, and the spiral flow channel holes in the heat absorber are processed in a 3D printing mode.
In the solar cavity heat absorber with heat storage, the runner and the cavity wall are integrated, and the phase-change heat storage medium adopts a molten salt heat storage medium.
Compared with the prior art, the invention has the beneficial effects that:
the invention has simple structure and convenient operation, and the flow channel for flowing the working medium is arranged in the wall surface of the cavity type heat absorber, thereby realizing the functional integration of absorbing solar energy and heating the working medium on the wall surface of the cavity; even if the focusing energy flow is unevenly distributed on the inner surface of the heat absorber, the temperature gradient of each area can be reduced due to the high heat conduction performance of the metal body, and the uniform temperature effect is achieved; moreover, an annular cavity filled with phase change heat storage materials is additionally arranged on the outer side of the cavity type heat absorber, so that heat energy is stored. The integrated structure realizes the integration of functions such as direct storage and reutilization of heating working medium and excessive heat energy, and the invention has the advantages of high light-heat conversion efficiency, safety and reliability.
Drawings
FIG. 1 is an isometric view of example 1 of the invention
FIG. 2 is a cross-sectional view of the absorber and fins of FIG. 1
FIG. 3 is an external view of embodiment 1 of the present invention
FIG. 4 is an isometric view of example 2 of the invention
Fig. 5 is an isometric view of the heat absorbing and storing body of fig. 4
Fig. 6 is an isometric view of the back cover plate of fig. 4
Fig. 7 is an isometric view of the front end plate of fig. 4
In the figure: 1-a feed inlet; 2-a front sealing plate; 3-a heat absorber; 4-peripheral plate; 5-working medium inflow pipe; 6-heat exchange fins; 7, a rear sealing plate; 8-a spiral runner hole I; 9-a working medium outflow pipe; 10-a front cover plate; 11-a back cover plate; 12-a tubular body; 13-a vertical runner hole; 14-a waist-shaped sink II; 15-waist-shaped sink groove I.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
As shown in fig. 1, the invention comprises a front sealing plate 2, a heat absorber 3, a peripheral plate 4, a working medium inflow pipe 5, heat exchange fins 6, a rear sealing plate 7, spiral runner holes 8 and a working medium outflow pipe 9. The heat absorber 3 is a cylindrical cavity structure with an opening at one end, one end of the opening is used for receiving solar energy collected by the solar concentrator, and a quartz glass plate is arranged at the opening and is used for reducing radiation and convection heat loss of the heat absorber 3. The inner surface of the heat absorber 3 is coated with a high temperature resistant coating with high efficient absorption effect on solar energy, and the outer side of the bottom plate is wrapped with a heat insulation material for reducing radiation and convection heat loss of the heat absorber 3.
As shown in fig. 2, a spiral flow channel hole i 8 is formed in the side wall of the heat absorber 3, a spiral flow channel hole ii is formed in the bottom plate 11, one end of the spiral flow channel hole i 8 is communicated with the working medium inflow pipe 5, and the working medium inflow pipe 5 is arranged on the heat absorber 3; the other end of the spiral flow passage hole I8 is communicated with one end of the spiral flow passage hole II, the other end of the spiral flow passage hole II is communicated with the working medium outflow pipe 9, and the working medium outflow pipe 9 is arranged on the bottom plate, so that working medium can flow out of the spiral flow passage hole II to follow-up driving thermodynamic equipment. The spiral runner hole I8 and the spiral runner hole II are processed in a 3D printing mode. The characteristics realize the functional integration of solar energy absorption and working medium heating of the wall surface of the cavity, and even if the focusing energy flow distribution on the inner surface of the heat absorber is uneven, the temperature gradient of each area can be reduced due to the high heat conduction performance of the metal body, the temperature equalizing effect is realized, and the thermal stress and the radiation heat loss are further reduced. This is an advantage over the prior art metal coil heat absorber. On the other hand, the heat absorber can simplify the design difficulty of the mirror surface shape of the existing solar condenser, namely the design of homogenizing the energy flow of the smooth wall surface in the heat absorber can be easily realized. However, the conventional metal coil heat absorber is difficult to achieve uniform energy flow, because the surface of the inner cavity formed by the metal coil always has one side which cannot directly receive the concentrated solar energy.
As shown in fig. 2, the outer side of the heat absorber 3 is provided with a peripheral plate with a tubular structure, two ends of the peripheral plate are respectively connected with the heat absorber 3 through a front sealing plate and a rear sealing plate, the front sealing plate and the rear sealing plate are both in annular structures, and the radius of an inner hole of the front sealing plate 2 is not larger than that of an inner hole of the heat absorber 3 but larger than that of a focusing light spot collected by the solar condenser, so that optical loss and heat loss can be reduced. The radius of the inner hole of the rear sealing plate is equal to the radius of the outer circle of the heat absorbing body 3; the outer circle radius of the front sealing plate 2 and the rear sealing plate is the same as the outer diameter of the peripheral plate 4; the heat absorber 3, the peripheral plate, the front sealing plate and the rear sealing plate jointly enclose an annular cavity space, a feed inlet 1 communicated with the annular cavity space is arranged on the front sealing plate and used for introducing phase-change heat storage medium, and a sealing plug is arranged in the feed inlet 1. The annular cavity space is filled with a phase-change heat storage medium which is a molten salt heat storage medium commonly used in solar thermal power generation. The outside of the peripheral plate 4 is wrapped with heat insulation materials for reducing heat dissipation loss. Therefore, the annular cavity filled with the phase-change heat storage material is additionally arranged at the outer side of the cavity type heat absorber, so that the integration of functions such as storage and reutilization of redundant heat energy is directly realized, and the structure is simple, safe and reliable.
The outer wall surface of the heat absorber 3 is welded with a plurality of heat exchange fins 6, the plurality of heat exchange fins 6 are uniformly distributed along the circumferential direction, and the heat exchange fins 6 are of columnar structures with rectangular sections or triangular sections; when the cross section is triangular, the sharp angle points to the outside. The heat exchange fins 6 have the same height as the heat absorber 3. Heat exchange fins 6 are located within peripheral plate 4. This can improve the efficiency of thermal energy transfer when thermal energy is stored and reused.
Example 2
As shown in fig. 4, the structure is similar to that of embodiment 1, and differs from embodiment 1 in the structure of the heat absorbing body 3. In this embodiment, the heat absorber 3 is a cylindrical cavity structure with an open end, and is composed of a tubular body 12, a front cover plate 10 and a rear cover plate 11.
The side wall of the tubular body 12 is internally provided with a plurality of vertical runner holes 13, the plurality of vertical runner holes 13 are uniformly distributed along the circumferential direction, and the cross-section geometric shapes of the vertical runner holes 13 can be round, oval, rectangular, triangular and the like.
The front end of the tubular body 12 is provided with a front cover plate 10 and the rear end is provided with a rear cover plate 11. The front cover plate 10 is of an annular structure with the inner hole radius smaller than or equal to that of the tubular body 12, a plurality of kidney-shaped sinking grooves I15 are arranged on the front cover plate 10, and the kidney-shaped sinking grooves I15 are uniformly distributed along the circumference of the vertical runner hole 13; as shown in fig. 7. The rear cover plate 11 is provided with a plurality of waist-shaped sinking grooves II 14, and the waist-shaped sinking grooves II 14 are uniformly distributed along the circumference of the vertical runner holes 13; as shown in fig. 6. The kidney-shaped sink groove II 14 is communicated with two adjacent vertical runner holes 13, the kidney-shaped sink groove I15 is also communicated with two adjacent vertical runner holes 13, the kidney-shaped sink groove I15 and the kidney-shaped sink groove II 14 are arranged in a staggered mode, and a plurality of vertical runner holes 13 are connected into one working medium runner hole. Two adjacent waist-shaped sink grooves II 14 on the rear cover plate 11 are respectively connected with the working medium inflow pipe 5 and the working medium outflow pipe 9. Thereby, the working medium can enter from the working medium inflow pipe 5 and flow out from the working medium outflow pipe 9 after sequentially flowing through all the vertical flow passage holes 13 of the heat absorber 3. The surface of the cover plate 11 located in the cavity is coated with a high temperature resistant coating having a high efficient absorption effect on solar energy. In this structure, it is necessary to ensure the connection tightness between the rear cover plate 11 and the front cover plate 10 and both end surfaces of the heat absorber 3, thereby preventing leakage of the working medium.
The invention has simple structure, and by arranging the flow channel for the flow of the working medium in the wall surface of the cavity type heat absorber, not only the functional integration of absorbing solar energy and heating the working medium on the wall surface of the cavity is realized, but also the condition of uneven distribution of the focused energy flow on the inner surface of the heat absorber is realized, and the temperature gradient of each area is reduced by the high heat conducting property of the metal body, so that the invention has the temperature equalizing effect; on the other hand, the annular cavity filled with the phase-change heat storage material is additionally arranged on the outer side of the cavity type heat absorber, so that the integration of the direct storage and reuse functions of heating working media and excessive heat energy is realized.
Claims (9)
1. A heat-storage solar cavity heat absorber with integrated flow channel and cavity wall is characterized in that: comprises a heat absorbing body, a working medium inflow pipe and a working medium outflow pipe; the heat absorber is a cylindrical cavity structure with one end open, and one end of the opening is used for receiving solar energy collected by the solar concentrator; a working medium flow passage is arranged in the side wall of the heat absorbing body; one end of the working medium flow channel is communicated with the working medium inflow pipe, and the other end of the working medium flow channel is communicated with the working medium outflow pipe; the working medium inflow pipe and the working medium outflow pipe are arranged on the heat absorbing body; the outside of the heat absorber is provided with an annular cavity space, and the annular cavity space is filled with a phase change heat storage medium;
the heat absorber is of an integral structure, a spiral flow passage hole I is formed in the side wall of the heat absorber, a spiral flow passage hole II is formed in the bottom plate of the heat absorber, and the spiral flow passage hole I is communicated with the spiral flow passage hole II to form a working medium flow passage;
the outer side of the heat absorbing body is provided with a peripheral plate with a tubular structure, two ends of the peripheral plate are respectively connected with the heat absorbing body through a front sealing plate and a rear sealing plate, the front sealing plate and the rear sealing plate are both of annular structures, the radius of an inner hole of the front sealing plate is not larger than that of an inner hole of the heat absorbing body, and the radius of an inner hole of the rear sealing plate is equal to that of an outer circle of the heat absorbing body; the outer diameters of the front sealing plate and the rear sealing plate are the same as the outer diameter of the peripheral plate; the phase-change heat storage medium is supplied into the annular cavity space through the feed inlet;
the outer wall of the heat absorber is welded with a plurality of heat exchange fins which are uniformly distributed along the circumferential direction and are positioned in the annular cavity space, and the phase-change heat storage medium adopts a molten salt heat storage medium.
2. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 1, wherein the heat storage solar cavity heat absorber is characterized in that: the heat exchange fin is of a columnar structure with a rectangular or triangular section; when the section of the heat exchange fin is triangular, the sharp angle points to the outside; the height of the heat exchange fin is the same as that of the heat absorber.
3. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 1, wherein the heat storage solar cavity heat absorber is characterized in that: the inner surface of the cavity of the heat absorber is coated with a high-temperature-resistant coating with high-efficiency solar energy absorption effect; the outer side of the bottom plate of the heat absorber and the outer side of the bottom plate of the heat absorber are both wrapped with heat insulation materials.
4. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 1, wherein the heat storage solar cavity heat absorber is characterized in that: the front end opening of the heat absorber is provided with transparent quartz glass.
5. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 1, wherein the heat storage solar cavity heat absorber is characterized in that: the spiral runner hole in the heat absorber body is processed in a 3D printing mode.
6. A heat-storage solar cavity heat absorber with integrated flow channel and cavity wall is characterized in that: comprises a heat absorbing body, a working medium inflow pipe and a working medium outflow pipe; the heat absorber is a cylindrical cavity structure with one end open, and one end of the opening is used for receiving solar energy collected by the solar concentrator; a working medium flow passage is arranged in the side wall of the heat absorbing body; one end of the working medium flow channel is communicated with the working medium inflow pipe, and the other end of the working medium flow channel is communicated with the working medium outflow pipe; the working medium inflow pipe and the working medium outflow pipe are arranged on the heat absorbing body; the heat absorber comprises a tubular body, a front cover plate and a rear cover plate, wherein an annular cavity space is arranged on the outer side of the heat absorber, and phase change heat storage medium is filled in the annular cavity space; a plurality of vertical runner holes are arranged in the side wall of the tubular body along the axial direction, and the vertical runner holes are uniformly distributed along the circumferential direction; the front end of the tubular body is provided with a front cover plate, and the rear end is provided with a rear cover plate; the front cover plate is of an annular structure with the inner hole radius smaller than or equal to that of the tubular body, and is provided with a plurality of kidney-shaped sinking grooves I which are uniformly distributed along the circumference of the vertical runner hole; the rear cover plate is provided with a plurality of waist-shaped sinking grooves II which are uniformly distributed along the circumference of the vertical runner hole; the kidney-shaped sink groove I and the kidney-shaped sink groove II are arranged in a staggered manner, and a plurality of vertical runner holes are connected into a working medium runner hole; two adjacent waist-shaped sinking grooves II on the rear cover plate are respectively connected with a working medium inflow pipe and a working medium outflow pipe;
the outer side of the heat absorbing body is provided with a peripheral plate with a tubular structure, two ends of the peripheral plate are respectively connected with the heat absorbing body through a front sealing plate and a rear sealing plate, the front sealing plate and the rear sealing plate are both of annular structures, the radius of an inner hole of the front sealing plate is not larger than that of an inner hole of the heat absorbing body, and the radius of an inner hole of the rear sealing plate is equal to that of an outer circle of the heat absorbing body; the outer diameters of the front sealing plate and the rear sealing plate are the same as the outer diameter of the peripheral plate; the phase-change heat storage medium is supplied into the annular cavity space through the feed inlet;
the outer wall of the heat absorber is welded with a plurality of heat exchange fins which are uniformly distributed along the circumferential direction and are positioned in the annular cavity space, and the phase-change heat storage medium adopts a molten salt heat storage medium.
7. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 6, wherein the heat storage solar cavity heat absorber is characterized in that: the heat exchange fin is of a columnar structure with a rectangular or triangular section; when the section of the heat exchange fin is triangular, the sharp angle points to the outside; the height of the heat exchange fin is the same as that of the heat absorber.
8. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 6, wherein the heat storage solar cavity heat absorber is characterized in that: the inner surface of the cavity of the heat absorber is coated with a high-temperature-resistant coating with high-efficiency solar energy absorption effect; the outer side of the bottom plate of the heat absorber and the outer side of the bottom plate of the heat absorber are both wrapped with heat insulation materials.
9. The heat storage solar cavity heat absorber integrated with a flow channel and a cavity wall according to claim 6, wherein the heat storage solar cavity heat absorber is characterized in that: the front end opening of the heat absorber is provided with transparent quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910216347.2A CN109812997B (en) | 2019-03-21 | 2019-03-21 | Flow passage and cavity wall integrated solar cavity heat absorber with heat storage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910216347.2A CN109812997B (en) | 2019-03-21 | 2019-03-21 | Flow passage and cavity wall integrated solar cavity heat absorber with heat storage function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109812997A CN109812997A (en) | 2019-05-28 |
| CN109812997B true CN109812997B (en) | 2023-11-10 |
Family
ID=66609799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910216347.2A Active CN109812997B (en) | 2019-03-21 | 2019-03-21 | Flow passage and cavity wall integrated solar cavity heat absorber with heat storage function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109812997B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762855B (en) * | 2019-10-28 | 2024-04-02 | 湖南科技大学 | Solar heat absorber driven by wind power to rotate and translate and working method thereof |
| CN112902723B (en) * | 2020-12-25 | 2022-07-01 | 上海交通大学 | Spotlight melting normal position resource energy memory based on lunar soil 3D prints |
| CN113028660B (en) * | 2021-03-24 | 2024-09-13 | 湖南科技大学 | Solar cavity body heat receiver with adjustable inner cavity shape |
| CN113154708A (en) * | 2021-04-15 | 2021-07-23 | 东南大学 | Packed bed heat collection and storage device with cavity absorber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4217882A (en) * | 1978-10-30 | 1980-08-19 | Feldman Karl T Jr | Passive solar heat collector |
| CN2758657Y (en) * | 2004-11-30 | 2006-02-15 | 张耀明 | Cavity type solar energy receiver |
| CN106196655A (en) * | 2016-09-06 | 2016-12-07 | 湖南科技大学 | A kind of solar energy thermal-power-generating displacement air heat extractor of many pocket surfaces |
| CN205919544U (en) * | 2016-07-26 | 2017-02-01 | 中国能源建设集团有限公司工程研究院 | Solar thermal energy electricity generation is with positive displacement pressure -bearing air heat absorber |
| CN108931064A (en) * | 2018-04-26 | 2018-12-04 | 福建工程学院 | A kind of cylinder solar energy high temperature energy storage and the heat dump that exchanges heat |
-
2019
- 2019-03-21 CN CN201910216347.2A patent/CN109812997B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4217882A (en) * | 1978-10-30 | 1980-08-19 | Feldman Karl T Jr | Passive solar heat collector |
| CN2758657Y (en) * | 2004-11-30 | 2006-02-15 | 张耀明 | Cavity type solar energy receiver |
| CN205919544U (en) * | 2016-07-26 | 2017-02-01 | 中国能源建设集团有限公司工程研究院 | Solar thermal energy electricity generation is with positive displacement pressure -bearing air heat absorber |
| CN106196655A (en) * | 2016-09-06 | 2016-12-07 | 湖南科技大学 | A kind of solar energy thermal-power-generating displacement air heat extractor of many pocket surfaces |
| CN108931064A (en) * | 2018-04-26 | 2018-12-04 | 福建工程学院 | A kind of cylinder solar energy high temperature energy storage and the heat dump that exchanges heat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109812997A (en) | 2019-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109812997B (en) | Flow passage and cavity wall integrated solar cavity heat absorber with heat storage function | |
| CN102445008B (en) | Tower type solar water/steam composite plate-fin hot plate type heat absorber | |
| CN108954870B (en) | Solar high-temperature energy storage and heat exchange heat absorber | |
| CN201973915U (en) | U-shaped passage combined heat pipe receiver | |
| CN105066478A (en) | Circular-truncated-cone-shaped cavity type solar heat absorber with double-row multiple tubes | |
| CN102141301B (en) | Pipe-cavity integrated disc solar heat receiver | |
| CN111156712B (en) | Double-sided heat collection composite solar heat absorber and method | |
| CN102102915B (en) | U-shaped channel combined heat pipe receiver | |
| CN204006715U (en) | A kind of flat-plate concentration type solar water-free case water heater | |
| CN104534688A (en) | Two-stage solar heat absorber | |
| CN209763517U (en) | Heat absorber with heat storage solar cavity and integrated flow channel and cavity wall | |
| CN210374116U (en) | Solar energy-gas heat supply cavity receiver with heat storage function | |
| CN115183476A (en) | Ultra-supercritical solar tower type water working medium heat absorber | |
| CN110500794B (en) | Solar energy/fuel gas complementary heat supply/heat storage integrated solar energy cavity receiver | |
| CN206247929U (en) | A kind of phase change thermal storage heat exchanger of fin and tube type structure | |
| CN201973900U (en) | Pipe-chamber-integrated disc type solar heat receiver | |
| CN112902723B (en) | Spotlight melting normal position resource energy memory based on lunar soil 3D prints | |
| CN210486142U (en) | Cavity type gas-liquid two-phase heat absorber | |
| CN109813169B (en) | Elastic tube bundle vibration enhanced heat exchange type solar cavity heat absorber | |
| CN111076584B (en) | Truss heat pipe and loop heat pipe coupling heat transfer assembly for spacecraft | |
| CN205895512U (en) | Gaseous body heat absorption solar power system based on characteristic absorption spectrum | |
| CN204478527U (en) | A kind of two-stage solar heat absorber | |
| CN106225263B (en) | A kind of coil pipe honeycomb cavate liquid working substance solar thermal collector | |
| CN214468535U (en) | Thread type heat exchange tube structure for nuclear power steam generator | |
| CN205191941U (en) | Cavity absorber based on linear fei nieer solar collector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |