CN107014237A - A kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer - Google Patents
A kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer Download PDFInfo
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- CN107014237A CN107014237A CN201710126605.9A CN201710126605A CN107014237A CN 107014237 A CN107014237 A CN 107014237A CN 201710126605 A CN201710126605 A CN 201710126605A CN 107014237 A CN107014237 A CN 107014237A
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- heat
- working medium
- microchannel
- thermal storage
- storage device
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- 230000008676 import Effects 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000012782 phase change material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000005538 encapsulation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Central Heating Systems (AREA)
Abstract
The invention discloses a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer.The device includes：Thermal storage device casing, heat-exchange working medium inlet tube and outlet and microchannel generating means.The microchannel generating means includes tree-like import pipe device, porous import pipe device and electrical heating wire device.Pass through the effect of above-mentioned three kinds of microchannel generating means, diverse location forms microchannel inside thermal storage device, solid phase change material, which can be solved, hinders heat-exchange working medium inside thermal storage device the problem of proper flow, strengthen the heat convection between thermal storage device internal heat working medium and phase-change material, the heat accumulation efficiency of thermal storage device is greatly improved, the large-scale application of mobile energy storage technology is promoted.
Description
Technical field
The present invention relates to a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer, by being moved existing
Tree-like inlet tube, porous inlet tube and electrical heating wire are set inside dynamic heat-storing device, diverse location is formd inside thermal storage device
Microchannel, solves the problems, such as the mobile obstacle of solid heat storage material exchange hot working fluid inside existing mobile heat-storing device, enhances
Heat convection inside thermal storage device, shortens the heat accumulation time, improves heat accumulation efficiency.
Background technology
At present, industrial energy consumption in China's energy consumption mix in occupation of leading position.Among these, there is substantial amounts of industry remaining
Heat, used heat are wasted, and are not recycled in time, reduce the efficiency of energy utilization of industrial department.On the other hand,
Construction period for being laid due to heating network is longer, invest larger, the heat supply hysteresis in new urbanization region and without heat supply
Pipe network connection has become a major issue of its development of restriction.
The mobile thermal storage device for loading heat accumulating is transported storage heat at waste heat source by mobile heat-storage technology, by automobile etc.
The vehicles transport thermal storage device at user, then the heat in thermal storage device is discharged into the use hot systems at user, both real
Showed waste heat, used heat it is secondary using and can meet user use heat demand.
Mobile thermal storage device based on direct contact heat transfer passes through the direct contact type convection current between heat accumulating and heat-exchange working medium
Heat exchange, enhances the heat transfer intensity inside thermal storage device, and quick storage and the release of heat can be achieved.At present, it is existing directly to contact
Thermal storage device designs heat-exchange working medium inlet tube the heat accumulating loading area in thermal storage device inner bottom part.Although the design is more convenient
The heat exchange flow process in thermal storage device is realized, but thermal storage device bottom can be deposited in solid form after heat accumulating solidification heat release
Portion, plugs the heat-exchange working medium import positioned at thermal storage device bottom so that heat-exchange working medium can not inside thermal storage device proper flow, subtract
Weak heat convection degree, adds the heat accumulation time, reduces heat accumulation efficiency, constrains direct contact heat transfer movement heat-storage technology
Efficient application.
The content of the invention
Based on the problems of above-mentioned existing mobile thermal storage device, the present invention proposes that one kind is directly connect using microchannel enhanced
Touch the mobile heat-storing device of heat exchange.
In order to efficiently solve above-mentioned technical problem, a kind of movement using microchannel enhanced direct contact heat transfer of the present invention
Heat-storing device, including：
Thermal storage device casing, heat-exchange working medium inlet tube and outlet and microchannel generating means.
Thermal storage device casing of the present invention is metal material, and closing inner chamber can realize the dress of heat accumulating and heat-exchange working medium
Carry.Box outer surface is provided with the insulation materials such as rock wool.
Heat-exchange working medium inlet tube and outlet of the present invention are metal material, along pipe range direction spaced set aperture,
Heat-exchange working medium is allowd to flow in and out thermal storage device by aperture.Heat-exchange working medium inlet tube is horizontally arranged in thermal storage device casing
Bottom, the aperture on inlet tube is down-set.Heat-exchange working medium outlet is horizontally arranged at the top in thermal storage device casing, outlet
Aperture on pipe is set up.
Microchannel generating means of the present invention includes：Tree-like import pipe device, porous import pipe device and electrical heating
Silk device.
The tree-like import pipe device, containing installed in the horizontal inlet pipe of thermal storage device bottom, vertical pipeline section and inclination branch
Pipeline section.The horizontal inlet pipe is arranged on the heat-exchange working medium circulation line on the outside of the bottom in thermal storage device casing, connection thermal storage device.
Heat-exchange working medium flows into thermal storage device via horizontal inlet pipe；The vertical pipeline section is equidistantly connected to the top of horizontal inlet pipe, water
Heat-exchange working medium in flat inlet tube is flowed into vertical pipeline section；The inclined legs section is connected with vertical pipeline section in 30 ° or 60 ° of angles
On vertical pipeline section, the aperture outwards opened up is set in every inclined legs section.
The porous import pipe device, contains many porous inlet tubes of level installed in thermal storage device bottom half.Every
The porous import bottom of the tube of root equidistantly opens up aperture.
The electrical heating wire device is vertically mounted on thermal storage device box house, is tightly connected with thermal storage device bottom half, and
Control cable is arranged on outside thermal storage device.Many electrical heating wires are arranged along the length direction of heat-exchange working medium inlet tube respectively.Every
Electrical heating wire passes through the aperture of heat-exchange working medium inlet tube in vertical direction.Electrical heating wire is not done with heat-exchange working medium inlet tube aperture
Encapsulation process, encapsulation process is done with heat-exchange working medium inlet tube top junction.
Above-mentioned microchannel generating means, it is characterised in that：Microchannel is equidistantly arranged in thermal storage device length direction
Device, the microchannel that diameter range is 1-10mm or so can be produced in the setting position of generating means, is advantageously accounted for existing
Flowing blockage problem in thermal storage device, realizes in thermal storage device and uniformly stores thermal effect.Tree-like import pipe device is in thermal storage device
The diverse location of level and short transverse is designed with the flow orifice of heat-exchange working medium, can be achieved to send out while multiposition microchannel
It is raw, form multiple Convective Heat Transfers；Bottom of the porous import pipe device in thermal storage device is provided with the multigroup aperture of horizontal direction,
The multigroup microchannel that can be achieved in vertical direction occurs, and influences smaller to thermal storage device internal structure, is adapted to the storage of polymorphic type
Hot device application；Electrical heating wire device is arranged on the vertical direction of heat-exchange working medium inlet hole, can form multigroup directly over inlet hole
Microchannel, and the size of microchannel can be controlled, realize the quick progress for storing heat.
Compared with existing mobile thermal storage device, the beneficial effects of the invention are as follows：
(1) heat-exchange working medium blockage problem of the existing direct contact heat transfer movement thermal storage device during heat accumulation is solved, is entered
One step enhances the heat convection in thermal storage device, shortens the heat accumulation time, improves heat accumulation efficiency.
(2) the microchannel electro-heat equipment has three kinds of concrete measures, can be according to the mobile heat accumulation of different type and structure
Device carries out flexible design, and the application of microchannel is realized to greatest extent.
Brief description of the drawings
Fig. 1 is provided with the thermal storage device internal structure schematic diagram 1 of tree-like import pipe device for the present invention.
Fig. 2 is provided with the thermal storage device internal structure schematic diagram 2 of tree-like import pipe device for the present invention.
Fig. 3 is provided with the thermal storage device internal structure schematic diagram 3 of tree-like import pipe device for the present invention.
Fig. 4 is provided with the thermal storage device profile 1 of tree-like import pipe device for the present invention.
Fig. 5 is provided with the thermal storage device profile 2 of tree-like import pipe device for the present invention.
Fig. 6 is provided with the thermal storage device structural representation of porous import pipe device for the present invention.
Fig. 7 is provided with the thermal storage device profile 1 of porous import pipe device for the present invention.
Fig. 8 is provided with the thermal storage device profile 2 of porous import pipe device for the present invention.
Fig. 9 is provided with the thermal storage device structural representation of electrical heating wire device for the present invention.
Figure 10 is that the present invention is provided with electrical heating wire apparatus structure profile 1.
Figure 11 is that the present invention is provided with electrical heating wire apparatus structure profile 2.
Embodiment
The present invention is described in further detail with reference to embodiment.
As shown in Fig. 1~11, the present invention is by thermal storage device casing H, heat-exchange working medium inlet tube A1, outlet A2 and microchannel
Generating means (tree-like import pipe device (including vertical pipeline section B1-B10 and inclined legs section C1-C40) and porous import pipe device
F1-F4 and electrical heating wire device G1-G20) composition.
As shown in Fig. 1~5, the thermal storage device for being provided with tree-like inlet tube microchannel generating means, embodiments thereof is：
Thermal storage device H
Bottom sets the tree-like inlet tube of two row's heat-exchange working mediums.It is equidistant along pipe range direction on horizontal inlet pipe A1 and A2
Connect (being in 30 ° or 60 ° of angles with vertical pipeline section) installation four at a certain angle on vertical pipeline section B1-B10, every vertical pipeline section
Inclined legs section,
Heat-exchange working medium flow orifice D is set on inclined legs section C1-C40.During heat accumulation, heat-exchange working medium is by tree-like import
Pipe enters thermal storage device H, and tube wall is heated when flowing through tree-like inlet tube, and heat is delivered to the phase transformation material of near-wall by tube wall
Material so that the phase-change material of near-wall melts, and microchannel is formed about in tree-like pipe.Heat-exchange working medium enters thermal storage device H bottoms
Afterwards, flowed by microchannel to the outlet E at the top of thermal storage device, occur heat convection, storage with phase-change material in the process
And release heat.
As can be seen from figures 6 to 8, the thermal storage device for being provided with porous inlet tube microchannel generating means, embodiments thereof is：
Thermal storage device H bottoms set the horizontal inlet pipe F1-F4 of heat-exchange working medium.Arranged on every inlet tube along pipe range direction
There are multiple heat-exchange working medium flow orifice D.In exothermic process, heat-exchange working medium flows into thermal storage device H by inlet tube F1-F4, in level side
Flowed into upwards along the different orifice D on inlet tube in thermal storage device H.Because the import hole count in same level is more, in phase
More gap can be formed by becoming in Material Coagulating Process, form more microchannel.During heat accumulation, heat-exchange working medium enters from level
Aperture D on mouth pipe flows into thermal storage device H bottoms, and occurs heat convection by the microchannel and phase-change material formed before, real
The quick storage of existing heat and release, after flowed out through the outlet E at the top of thermal storage device H.
As shown in Fig. 9~11, the thermal storage device for being provided with electrical heating wire microchannel generating means, embodiments thereof is：
Electrical heating wire device G1-G20 is installed in the vertical direction through each aperture D of heat-exchange working medium inlet tube.Heat accumulation
During, silk device G1-G20 operation operation is electrically heated first, treats that the phase-change material around electrical heating wire melts and shape
Heat-exchange working medium circulating pump is opened after into microchannel, electrical heating wire device G1-G20 is closed.Heat-exchange working medium is flowed into by inlet tube aperture D
Thermal storage device H bottoms, along the microchannel of formation to thermal storage device H at the top of outlet E flowing, and in the process with phase-change material
Generation heat convection, realizes the storage and release of heat.
To sum up, can be in mobile thermal storage device using tree-like import pipe device, porous import pipe device and electrical heating wire device
Internal diverse location formation microchannel, solves existing direct contact heat transfer thermal storage device internal solid phase-change material exchange hot working fluid
Mobile obstacle problem, enhances the heat convection inside thermal storage device, can greatly improve heat accumulation efficiency.
Mobile thermal storage device of the present invention is respectively provided with tree-like inlet tube, added compared with existing mobile thermal storage device
Horizontal inlet pipe and aperture, electrical heating wire device is devised on inlet tube aperture.By above-mentioned measure, at heat accumulation process initial stage
Microchannel is created for the flowing of heat-exchange working medium, while not influenceing normal operation operation in thermal storage device.
Heat-exchange working medium of the present invention typically uses high temperature heat conductive oil.Alternatively, it is also possible to use fuse salt or water conduct
Heat-exchange working medium.
Phase-change material of the present invention is mainly the material that solidification is undergone phase transition in thermal process is stored and is melted, both can be with
It is the phase-change material of organic or the phase-change material of inorganic.
Although above in conjunction with figure, invention has been described, and the invention is not limited in above-mentioned specific embodiment party
Formula, above-mentioned embodiment is only schematical, rather than restricted, and one of ordinary skill in the art is in this hair
Under bright enlightenment, without deviating from the spirit of the invention, many variations and combination can also be made, these belong to this hair
Within bright protection.
Claims (7)
1. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer, it is characterised in that including：
Metal thermal storage device casing, heat-exchange working medium inlet tube and outlet and microchannel generating means (tree with closing inner chamber
Shape import pipe device, porous import pipe device and electrical heating wire device).
2. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer according to claim 1, its feature
It is, described thermal storage device box house uses the heat convection mode that heat-exchange working medium is directly contacted with phase-change material.
3. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer according to claim 1, its feature
It is, described heat-exchange working medium inlet tube and outlet are along pipe range direction spaced set aperture, on heat-exchange working medium inlet tube
Aperture is arranged on bottom of the tube, and Open Side Down, and the aperture on heat-exchange working medium outlet is arranged on tube top portion, opening upwards.
4. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer according to claim 1, its feature
Be, described microchannel generating means (tree-like import pipe device) by two horizontal inlet pipes, be connected on horizontal inlet pipe
Ten vertical pipeline sections and 40 inclined legs section composition for being connected on vertical pipeline section, vertical pipeline section is equidistantly connected to two
On root horizontal inlet pipe, inclined legs section is connected on vertical pipeline section with vertical pipeline section in 30 ° or 60 ° of angles, in inclined legs section
Spaced set heat-exchange working medium flow orifice.
5. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer according to claim 1, its feature
It is, described microchannel generating means (porous import pipe device) is made up of, the bottom of every inlet tube four horizontal inlet pipes
Portion offers downward heat-exchange working medium flow orifice.
6. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer according to claim 1, its feature
It is, described microchannel generating means (electrical heating wire device) is by 20 electrical heating wires for being arranged on thermal storage device bottom half
Composition, every electrical heating wire is in vertical direction through the aperture on horizontal inlet pipe, electrical heating wire and heat-exchange working medium inlet tube
Encapsulation process is not done in aperture, does encapsulation process with heat-exchange working medium inlet tube top junction, the setting height(from bottom) of electrical heating wire is storage
The loading height of phase-change material in hot device.
7. a kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer according to claim 1, its feature
It is, one kind in described heat-exchange working medium selection conduction oil, fuse salt, water, organic working medium and nano-fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126605.9A CN107014237B (en) | 2017-02-23 | 2017-02-23 | Mobile heat storage device utilizing micro-channels to strengthen direct contact heat exchange |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126605.9A CN107014237B (en) | 2017-02-23 | 2017-02-23 | Mobile heat storage device utilizing micro-channels to strengthen direct contact heat exchange |
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| CN107014237A true CN107014237A (en) | 2017-08-04 |
| CN107014237B CN107014237B (en) | 2024-07-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945531A (en) * | 2019-03-01 | 2019-06-28 | 广东五星太阳能股份有限公司 | Medium-high temperature air gradient pore phase-change heat storage unit |
| CN110218095A (en) * | 2019-04-02 | 2019-09-10 | 武汉理工大学 | A kind of preparation method of the high effective heat-storage unit based on grade hole ceramics |
| CN112728790A (en) * | 2021-01-25 | 2021-04-30 | 上海海事大学 | Plate type solar chimney phase change capsule heat storage device with tree fork flow channel |
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| CN112728790A (en) * | 2021-01-25 | 2021-04-30 | 上海海事大学 | Plate type solar chimney phase change capsule heat storage device with tree fork flow channel |
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| Publication number | Publication date |
|---|---|
| CN107014237B (en) | 2024-07-02 |
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