CN205352161U - Solar energy fused salt phase -change thermal ware - Google Patents
Solar energy fused salt phase -change thermal ware Download PDFInfo
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- CN205352161U CN205352161U CN201620001776.XU CN201620001776U CN205352161U CN 205352161 U CN205352161 U CN 205352161U CN 201620001776 U CN201620001776 U CN 201620001776U CN 205352161 U CN205352161 U CN 205352161U
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- cavity
- vortex generator
- fluid passage
- housing
- phase change
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The utility model provides a solar energy fused salt phase -change thermal ware, includes the casing, the casing upper end is equipped with the end cover, is equipped with two confined cavitys in the casing, is equipped with the first fluid passageway between the cavity, is equipped with the second fluid passageway between casing and the cavity, is equipped with phase change material in the cavity, the casing lower extreme is equipped with the feed liquor pipe, and the casing lower part is equipped with the drain pipe, first fluid passageway internal fixation has vortex generator, is equipped with vortex generator on the cavity outer wall in the second fluid passageway, is equipped with the fin on the cavity inner wall. The utility model provides a hot -fluid gets into the first fluid passageway by the inlet, and the second fluid passageway outside the book fender effect of end cover gets into the cavity down carries out the second and heats, thermal transmission is reinforceed in disturbance when vortex generator has increased the heat supply fluid flow, phase change material's heat transfer is reinforceed to the annular fin, has improved its heat accumulation / exothermic efficiency, high temperature fluid stores the heat in being equipped with phase change material's cavity, provides technical support for the stability of solar energy light and heat, the high -efficient utilization.
Description
Technical field
This utility model relates to the technical field of solar light-heat power-generation accumulation of heat, is specifically related to a kind of solar molten salt phase change heat accumulator.
Background technology
In China, along with the development of heliotechnics, 2015 the end of the year solar electrical energy generation total installed capacity capacity reached 14GW, along with China's attention to Renewable Energy Development, to the exploitation of solar energy constantly deeply.Solar energy, as more satisfactory regenerative resource, has the advantages such as reserves are big, pollution-free.But, among other benefits, there is a lot of problems in solar energy in utilizing process, and solar energy optical-thermal is subject to the impact of Intensity of the sunlight, ground wind speed, weather and the change of daily cycle in season etc. very greatly, it is impossible to enough stable offer heat supplies.Unnecessary solar energy is stored by energy storage equipment, use when solar energy is under-supply, can effectively solve Problems existing in the heat utilization systems such as solar electrical energy generation, solar absorption heat pump, solar energy drying, promote the development of heliotechnics and new energy use technology.
Solar energy heat utilization technology is to utilize heat collector that sunray carries out reflection to focus on a bit, by the light of direct irradiation of sunlight and reflection, relates at high temperature modification TiON backbone and obtains high temperature on the type selective absorbing material coating basis to light absorption.The fluid to about 300 DEG C in stainless-steel vacuum pipe on heating focus point, high temperature fluid is made directly to generate electricity or heat other media and carries out solar light-heat power-generation, Solar use aspect all has the application adopting solar electrical energy generation, absorption refrigeration, solar energy drying to be combined with accumulation of energy, utilize multiple thermal storage unit to carry out parallel connection to store substantial amounts of solar energy, carry out continuous print energy supply in order to solar energy optical-thermal.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of solar molten salt phase change heat accumulator, utilizes phase-change material to store solar energy efficiently, solves the local overcooling that tradition thermophore exists in heat-accumulating process, enhance the heat transfer of fluid, improve the heat storage performance of thermophore.
In order to achieve the above object, the technical solution of the utility model is: a kind of solar molten salt phase change heat accumulator, including housing, housing upper end is provided with end cap, two cavitys closed it are provided with in described housing, it is provided with first fluid passage between cavity, between housing and cavity, is provided with second fluid passage, in cavity, be provided with phase-change material；Described housing lower end is provided with feed tube, and the sidewall of lower housing portion is provided with drain pipe；Being fixed with vortex generator in described first fluid passage, the chamber outer wall in second fluid passage is provided with vortex generator, and cavity inner wall is provided with fin.
Described fin is staggered on the inwall of cavity, and vortex generator is staggered in the outer wall of cavity, first fluid vias inner walls.
The thickness of described vortex generator is 3mm, and vortex generator is staggered along the axial direction of housing.
Described fin is the annular fin that stainless steel material is made, and described vortex generator is the vortex generator that stainless steel material is made.
Described vortex generator is triangle vortex generator, vortex generator is welded on cavity and first fluid passage, the axial direction angle of vortex generator and housing is 45, the drift angle of vortex generator is 60o, and the distance of the drift angle distance cavity of vortex generator and the tube wall of first fluid passage is 20mm.
Described housing is thickness is the housing made of the stainless steel material of 5mm, and the cross section of housing is annular, and end cap is the end cap of hollow hemispheric.
Described first fluid passage end stretches out housing, and feed tube is arranged on the extension of first fluid passage, and the heat-conducting medium of first fluid passage and second fluid passage is conduction oil or the water of flowing.
Described feed tube and drain pipe are galvanized pipe, feed tube and be respectively connected with standard flange on drain pipe, and described feed tube and drain pipe are enclosed with the fiberglass insulation that thickness is 50mm.
The longitudinal length of described housing is 1000mm, and the diameter of cavity is 100mm, and the width of first fluid passage is 160mm, and the width of second fluid passage is 50mm.
Phase-change material in described cavity is the phase-change material of the Molten Binary Salts composition of mass ratio 54%KNO3 and the 46%NaNO3 binary nitrate mixed or mass ratio 40%KNO3 and 60%NaNO3 mixing.
This utility model adopts telescoping structure, and heat donor fluid is entered first fluid passage by inlet, enters the second fluid passage outside cavity and carry out the second heating under the folding gear effect of end cap；Add heat transfer enchancement at first fluid passage and second fluid passage, add disturbance during heat donor fluid flowing, the transmission of strengthening heat；In cavity increase annular fin, alternating expression arrange, reinforced transformation material heat transfer, improve its accumulation of heat/exothermal efficiency；From the solar energy that solar thermal collector is collected, adding hot heat transfer fluid, high temperature fluid passes through this device, and by heat storage in the cavity being provided with phase-change material, stable, the efficient utilization for solar energy provides technical support.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is shape assumption diagram of the present utility model.
Fig. 2 is axial sectional view of the present utility model.
Fig. 3 is the sectional view of standard flange of the present utility model.
Fig. 4 is the structural representation that vortex generator of the present utility model is connected with cavity.
Fig. 5 is the structural representation of vortex generator of the present utility model.
Fig. 6 is this utility model structural representation in trough type solar heat-collector.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not paying creative work premise, broadly fall into the scope of this utility model protection.
As shown in Figures 1 to 5, a kind of solar molten salt phase change heat accumulator, including housing 7, housing 7 upper end is provided with end cap 21.Housing 7 and end cap 21 are all thickness is the housing made of the stainless steel material of 5mm, keeps thermophore to maintain long service life.The cross section of housing 7 is annular, and the axial cross section of housing 7 is rectangle, and the longitudinal length of housing 7 is 1000mm, and end cap 21 is the end cap of hollow hemispheric.
Being provided with two cavitys 3 closed in housing 7, cavity 3 is fixed on housing 7.The diameter of cavity 3 is 100mm, being packaged with phase-change material in cavity 3, the phase-change material in cavity 3 is mass ratio is the binary nitrate of 54%KNO3 and 46%NaNO3 mixing or the phase-change material that forms of Molten Binary Salts (solarsalt) that mass ratio is 40%KNO3 and 60%NaNO3 mixing.
Being provided with first fluid passage 4 between cavity 3, be provided with second fluid passage 22 between housing 7 and cavity 3, second fluid passage is positioned at the both sides of cavity 3.Housing 7, cavity 3 and first fluid passage 4 form the telescopic hierarchy of three layers.Heat donor fluid in first fluid passage 4 enters second fluid passage 22 under the folding of end cap 21 keeps off and carries out second time heating.Cavity 3 inwall is provided with fin 5, and fin 5 is the fin of annular, is made up of stainless steel material.Fin 5 is staggered on the inwall of cavity 3, and fin 5 can be welded on cavity 3.
The cross section of first fluid passage 4 is annular, and the diameter of first fluid passage 4 and width are 160mm.The width of second fluid passage 22 is 50mm.Being provided with mean for hot fluid in first fluid passage 4 and second fluid passage 22, the heat-conducting medium of heat donor fluid is conduction oil or the water of flowing.Further, heat-conducting medium can be Mobil 605 series conduction oil.The inwall of first fluid passage 4 is provided with vortex generator 6, and the outer wall of cavity 3 outer layer being positioned at second fluid passage 22 is provided with vortex generator 6, and vortex generator 6 is arranged in first fluid passage 4 and second fluid passage 22.The vortex generator that vortex generator 6 is made for stainless steel material.The thickness of vortex generator 6 is 3mm, and in first fluid passage 4 and on cavity 3 outer wall, vortex generator 6 is staggered along the axial direction of housing 7.Vortex generator 6 is triangle vortex generator, the base of vortex generator 6 is welded on cavity 3, the axial direction angle of vortex generator 6 and housing 7 is 45o, and the drift angle of vortex generator 6 is 60o and is 20mm with the inwall of first fluid passage 4 or the outer wall distance of cavity 3.
Housing 7 is stretched out in first fluid passage 4 one end, is provided with feed tube 1 in the middle part of the extension of first fluid passage 4, and the sidewall of housing 7 bottom is provided with drain pipe 2.The caliber of feed tube 1 and drain pipe 2 and the pipeline of solar thermal collector match, and feed tube 1 and drain pipe 2 are galvanized pipe, feed tube 1 and be enclosed with the fiberglass insulation that thickness is 50mm on drain pipe 2, it is prevented that the solar energy radiation of collection.Being respectively connected with standard flange 20 on feed tube 1 and drain pipe 2, standard flange 20 is convenient to be connected with the pipeline of solar thermal collector.As shown in Figure 3, feed tube 1 and drain pipe 2 are arranged in the intermediate throughholes of standard flange 20, the convenient pipeline with solar thermal collector is attached, and bolt reaches, through the through hole on both sides, the purpose that feed tube 1, drain pipe 2 are connected and sealed by use standard flange 20 with pipeline.
The heat donor fluid being entered first fluid passage 4 by feed tube 1 enters second fluid pipeline 22 under the folding of end cap 21 keeps off, and the heat donor fluid of high temperature transfers heat to, in the cavity 3 close with it, carry out the storage of energy.Under the effect of triangle vortex generator 6, there is disturbance, increase the convection recuperator coefficient between high-temperature heat supply fluid and first fluid passage 4 and cavity 3 wall, enhance the transmission to cavity 3 of the high-temperature stream side heat in heat donor fluid.Phase-change material region in cavity 3 adds the fin 5 of annular, and the fin 5 of annular, deeply to the inside of phase-change material, adds the heat conductivity of phase-change material.By arranging triangle vortex generator 6 and the fin 5 of annular at first fluid passage 4 and phase-change material region, improve the complex heat transfer coefficient of thermophore, improve heat storage efficiency.
This utility model is attached by standard flange 20 and solar thermal collection system, as shown in Figure 6.Pipeline in solar thermal collection system is Φ 25 galvanized pipe, and pipeline 50mm fiberglass insulation wraps up, and heat-accumulating process of the present utility model is by Valve controlling.When carrying out accumulation of heat, valve 8, 9, 11, 12 open, valve 10, 13, 14 close, solar energy is collected by parabolic groove type heat collector 19, reflection light focusing is to glass tube with vacuum 18, tube fluid is heated by sunray, fluid heating is become high-temperature heat supply fluid to about 200～300 DEG C, high-temperature heat supply fluid is under the effect of circulating pump 17, pipe-line system is circulated, high temperature fluid flows through vortex-shedding meter 16, fluid reservoir 15, valve 11 and valve 12 enter this utility model, this utility model by heat storage cavity 3 phase-change material in.When storing more heat, it is necessary to increasing the quantity of thermophore 7, multiple thermophores carry out parallel connection, it is possible to substantial amounts of storage solar energy.When solar energy is under-supply, need to utilize the energy stored, phase-change material in cavity 3 outwards discharges heat, now, valve 8,10,11,13 is opened, and valve 9,12,14 is closed, and heat donor fluid is under the effect of additional circulating pump, carry out heat exchange with the phase-change material in cavity 3, deliver heat to the thermal electric generator needed.When pipe-line system does not carry out accumulation of heat, valve 9,12 is closed, and valve 14 is opened, and heat donor fluid is circulated flowing in solar energy heating pipeline system.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should be encompassed within protection domain of the present utility model.
Claims (10)
1. a solar molten salt phase change heat accumulator, including housing (7), housing (7) upper end is provided with end cap (21), it is characterized in that: in described housing (7), be provided with two cavitys (3) closed, first fluid passage (4) it is provided with between cavity (3), being provided with second fluid passage (22) between housing (7) and cavity (3), cavity is provided with phase-change material in (3)；Described housing (7) lower end is provided with feed tube (1), and the sidewall of housing (7) bottom is provided with drain pipe (2)；Being fixed with vortex generator (6) in described first fluid passage (4), cavity (3) outer wall in second fluid passage (22) is provided with vortex generator (6), and cavity (3) inwall is provided with fin (5).
2. solar molten salt phase change heat accumulator according to claim 1, it is characterised in that described fin (5) is staggered on the inwall of cavity (3), vortex generator (6) is staggered on the outer wall of cavity (3), first fluid passage (4) inwall.
3. solar molten salt phase change heat accumulator according to claim 1, it is characterised in that the thickness of described vortex generator (6) is 3mm, vortex generator (6) is staggered along the axial direction of housing (7).
4. the solar molten salt phase change heat accumulator according to Claims 2 or 3, it is characterised in that the annular fin that described fin (5) is made for stainless steel material, the vortex generator that described vortex generator (6) is made for stainless steel material.
5. solar molten salt phase change heat accumulator according to claim 1, it is characterized in that, described vortex generator (6) is triangle vortex generator, vortex generator (6) is welded on cavity (3) and first fluid passage (4), the axial direction angle of vortex generator (6) and housing (7) is 45o, the drift angle of vortex generator (6) is 60 degree, and the distance of drift angle distance cavity (3) of vortex generator (6) and the tube wall of first fluid passage (4) is 20mm.
6. solar molten salt phase change heat accumulator according to claim 1, it is characterised in that described housing (7) is thickness is the housing made of the stainless steel material of 5mm, and the cross section of housing (7) is annular, the end cap that end cap (21) is hollow hemispheric.
7. solar molten salt phase change heat accumulator according to claim 1, it is characterized in that, housing (7) is stretched out in described first fluid passage (4) one end, feed tube (1) is arranged on the extension of first fluid passage (4), and the heat-conducting medium of first fluid passage (4) and second fluid passage (22) is conduction oil or the water of flowing.
8. solar molten salt phase change heat accumulator according to claim 1, it is characterized in that, described feed tube (1) and drain pipe (2) are galvanized pipe, feed tube (1) and drain pipe (2) it is respectively connected with standard flange (20), described feed tube (1) and be enclosed with the fiberglass insulation that thickness is 50mm on drain pipe (2).
9. solar molten salt phase change heat accumulator according to claim 1, it is characterized in that, the longitudinal length of described housing (7) is 1000mm, and the diameter of cavity (3) is 100mm, the width of first fluid passage (4) is 160mm, and the width of second fluid passage (22) is 50mm.
10. solar molten salt phase change heat accumulator according to claim 1, it is characterized in that, the phase-change material in described cavity (3) is the fused salt phase-change material of the binary nitrate composition of mass ratio 54%KNO3 and the 46%NaNO3 binary nitrate mixed or mass ratio 40%KNO3 and 60%NaNO3 mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620001776.XU CN205352161U (en) | 2016-01-04 | 2016-01-04 | Solar energy fused salt phase -change thermal ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620001776.XU CN205352161U (en) | 2016-01-04 | 2016-01-04 | Solar energy fused salt phase -change thermal ware |
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| CN205352161U true CN205352161U (en) | 2016-06-29 |
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| CN201620001776.XU Active CN205352161U (en) | 2016-01-04 | 2016-01-04 | Solar energy fused salt phase -change thermal ware |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360864A (en) * | 2019-02-01 | 2019-10-22 | 华北水利水电大学 | A kind of board-like regenerative heat exchange integrated apparatus of step phase transformation |
| CN114184074A (en) * | 2021-11-01 | 2022-03-15 | 南京航空航天大学 | Heat storage unit imitating shape of linear particles and processing method |
-
2016
- 2016-01-04 CN CN201620001776.XU patent/CN205352161U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360864A (en) * | 2019-02-01 | 2019-10-22 | 华北水利水电大学 | A kind of board-like regenerative heat exchange integrated apparatus of step phase transformation |
| CN110360864B (en) * | 2019-02-01 | 2021-02-19 | 华北水利水电大学 | Step phase change plate type heat storage and exchange integrated device |
| CN114184074A (en) * | 2021-11-01 | 2022-03-15 | 南京航空航天大学 | Heat storage unit imitating shape of linear particles and processing method |
| CN114184074B (en) * | 2021-11-01 | 2022-10-11 | 南京航空航天大学 | Heat storage unit in shape of imitated linear grains and processing method |
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