CN108413796A - A kind of temperature gradient energy storage heat exchanger - Google Patents
A kind of temperature gradient energy storage heat exchanger Download PDFInfo
- Publication number
- CN108413796A CN108413796A CN201810401096.0A CN201810401096A CN108413796A CN 108413796 A CN108413796 A CN 108413796A CN 201810401096 A CN201810401096 A CN 201810401096A CN 108413796 A CN108413796 A CN 108413796A
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- Prior art keywords
- plate
- phase
- energy storage
- heat exchanger
- change material
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Classifications
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- 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
Abstract
The invention discloses a kind of temperature gradient energy storage heat exchangers, including front plate, rear plate, at least two groups plate for being hermetically superimposed upon formation fluid channel between the front plate, rear plate successively, front plate, rear plate and the plate quadrangle is correspondingly arranged on circular flow through-hole, identical phase-change material is filled in plate described in every group, the phase transition temperature of the intraplate phase-change material of difference group is successively decreased successively along hot fluid flow direction.The present invention gives full play to the advantages such as plate heat exchanger heat transfer coefficient is high, floor space is small, light-weight, easy to make, it is big, environmentally protective in conjunction with phase-change material quantity of heat storage, selection is various the features such as, realize the purpose for improving efficiency of energy utilization.The design of cold fluid and hot fluid independent flow passage improves operational suitability, have energy storage density it is big, it is easy to operate, it is adaptable the advantages that, can be applied to the fields such as solar thermal collector, heat pump heat collector, industrial afterheat recovery.
Description
Technical field
The present invention relates to a kind of temperature gradient energy storage heat exchangers, are used for the storage and utilization of thermal energy, belong to energy conservation and environmental protection neck
Domain.
Background technology
With the high speed development of economic society since the industrial revolution, the energy challenge that facing mankind is increasingly serious.Phase transformation
Material refers to varying with temperature and changing state of matter and can provide the substance of latent heat, is a kind of effective raising energy profit
With the method for efficiency.Plate heat exchanger is widely used in various occasions as a kind of common heat-exchanger rig, and the two is organically combined
It will be to the efficient vital using playing the role of of the energy.
It there is no the energy storage heat exchanger of temperature gradient on the market at present, related data consulted, such as patent No. CN206755314
《Energy storage type steam and hot-water heating system》A kind of mode is provided, spiral pipe-disc type energy storage evaporator is devised and is used to heat, advantage
It is that spiral pipe-disk type heat exchanger heat exchange area is big, the thermal efficiency is relatively high, while the heat accumulation characteristic of phase-change material is utilized, and plays
The effect of peak load shifting has certain application prospect；The disadvantage is that structure is relatively easy, phase-change material loading is small, heat accumulation
Density is low.Patent No. CN206113738《A kind of heat storing plate and thermal storage device》A kind of mode is provided, with two metallic plates by phase transformation
Material package forms heat storing plate, and multiple heat storing plates stack to form thermal storage device, and advantage is that quantity of heat storage simple in structure is big, the disadvantage is that smooth
Metallic plate heat exchange efficiency is low, and does not account for phase-change material generated volume change in phase transition, has certain
Production safety hidden danger.
Therefore how to overcome the technological deficiency that heat exchange efficiency is low, quantity of heat storage is small in the prior art, become one it is urgently to be resolved hurrily
The problem of.
Invention content
In view of the above technical problems, easy to operate the purpose of the present invention is to provide a kind of energy storage density is big, it is adaptable
Temperature gradient energy storage heat exchanger.
The present invention is achieved through the following technical solutions：
A kind of temperature gradient energy storage heat exchanger, including front plate, rear plate, it is hermetically superimposed upon the front plate, rear folder successively
At least two groups plate of fluid channel is formed between plate, the front plate, rear plate and plate quadrangle are correspondingly arranged on circle
Shape fluid through-hole has been filled with identical phase-change material in plate described in every group, the intraplate phase-change materials of difference group
Phase transition temperature is successively decreased successively along hot fluid flow direction.
Further, the plate mainly has two plates to be surrounded with frame, and inside forms cavity for storing phase
Become material, the frame roof is provided with the sprue with cover for filling phase-change material, on the lid of the sprue with cover
It is reserved with gas interface, the gas for being discharged or sucking when phase-change material volume change is connected to by the gas interface by taking over
Buffer unit.
Further, the phase-change material is organic phase change material, inorganic phase-changing material or composite phase-change material.
Further, it is preinstalled with the pad for being attached at when plate is clamped and sealing between two plates on the plate
Circle.
Further, the material of the washer is rubber, fiber or graphite.
Further, the plate uses channel floor, embossing plate or corrugated plating, the striated surface of the plate of adjacent two plate
And washer-shaped is on the contrary, to isolate different fluid runner.
Further, the material of the plate uses stainless steel, copper alloy, graphite or aluminium alloy.
Further, the valve of control flow direction is preinstalled in the fluid through-hole of the plate quadrangle.
Further, the front plate, rear plate, plate outer wall be provided with heat-preservation cotton or insulation fibre.
Further, top guide bar and lower guide rod are fixedly installed between the front plate, rear plate upper and lower side respectively, it is described
Between front plate, rear plate and plate connection is clamped by more fastening bolts.
Compared with prior art, the invention has the advantages that：
1) devise a kind of novel temperature gradient except can heat exchanger, form the energy storage heat exchange for integrating energy storage with heat exchange function
Device combines phase transformation to store up on the basis of giving full play to the advantages such as plate heat exchanger heat exchange efficiency is high, compact-sized, floor space is small
The speciality such as energy material enthalpy is high, selection is various greatly improve system heat storage capacity, can effectively solve energy distribution time
With spatially non-uniform problem, various fields, such as industrial waste heat recycling can be widely applied to.
2) the outer ripple of plate can select the types such as channel floor, embossing plate, corrugated plating, heat transfer rate according to use condition
Soon, heat loss is small, the thermal efficiency is high, can be applied to most operating modes, and mature production technology, economical rationality.
3) phase-changing energy storage material is filled in inside plate structure, and space availability ratio height is compact-sized, the ripple outside plate
It ensure that larger specific surface area, good effect of heat exchange.Since plate is relatively thin, the thermal conductivity of phase-change material generally existing is also overcomed
Low disadvantage.
4) selection of phase-change material distinguishes variation relation in gradient with temperature, improves energy recovery utilization rate.
5) opening is reserved on plate, phase-change material replacement difficulty is small, and simple operation is easy to maintain.
6) space needed for phase-change material stereomutation has been reserved in plate interiors, while has reserved and having buffered in opening and has filled
The nozzle for setting connection has ensured the safety in operation and stability of device.
7) system as dual channel design can be carried out at the same time accumulation of heat exothermic operation, can be applied not only to discontinuous heat source
Storage can also directly apply to the recycling of continuity heat source, such as industrial waste heat recycling, operating flexibility are big.
8) type of flow of cold fluid and hot fluid, such as series winding, in parallel or series-parallel connection can be selected according to applicable cases.
Description of the drawings
Fig. 1 is the exploded perspective view of the embodiment of the present invention.
Fig. 2 is the parallel fluid flow schematic diagram of heat exchange process of the present invention.
Fig. 3 is the serial flow mode schematic diagram of heat exchange process of the present invention.
Fig. 4 is the series-parallel connection type of flow schematic diagram of heat exchange process of the present invention.
Fig. 5 is another series-parallel connection type of flow schematic diagram of heat exchange process of the present invention.
Fig. 6 is the rear plate structural schematic diagram of the embodiment of the present invention.
Fig. 7 is the plate structure schematic diagram of the embodiment of the present invention.
In figure：1- front plates；2- thermal fluid inlets；3- cold fluid outlets；4- plates；5- top guide bars；6- lower guide rods；After 7-
Clamping plate；8- fastening bolts；9- cold fluid inlets；10- hot fluid outlet ports；11- sprues with cover；12- washers；13- plates；14-
Frame；15- fluid courses；16- first rows stomata, the first sewage draining exits of 17-, 18- second row stomatas；The second sewage draining exits of 19-.
Specific implementation mode
Under the present invention is described in further detail in conjunction with the accompanying drawings and embodiments.
Embodiment
As shown in figures 1 to 6, a kind of temperature gradient energy storage heat exchanger, including front plate 1, rear plate 7, successively hermetically
It is superimposed upon at least two groups plate 4 that fluid channel is formed between the front plate 1, rear plate 7, the front plate 1, rear plate 7
Top guide bar 5 and lower guide rod 6 are fixedly installed between upper and lower side respectively, by more between the front plate 1, rear plate 7 and plate 4
Root fastening bolt 8 clamps connection.The quadrangle of the front plate 1 is provided with round thermal fluid inlet 2, cold fluid outlet 3, first
Gas vent 16, the first sewage draining exit 17,7 four jiaos of the rear plate are provided with round cold fluid inlet 9, hot fluid outlet ports 10, second
Gas vent 18, the first sewage draining exit 19,4 four jiaos of the plate are correspondingly arranged on circular flow runner 15, are filled out in plate 4 described in every group
The phase transition temperature for the phase-change material being provided in the plate 4 that identical phase-change material is organized as heat-storage medium, difference is filled along hot-fluid
Body flow direction is successively decreased successively, and 4 both sides of plate are contacted with fluid, effectively increase storage density and heat exchange efficiency.
As a kind of preferentially selection scheme, as shown in fig. 7, the plate 4 mainly has two plates 13 to be closed with frame 14
It encloses, inside forms cavity and is provided with the band for filling phase-change material for storing phase-change material, 14 top of the frame
Phase-change material first should be heated to molten state by lid sprue 11, when filling, rear pressurization injection.The lid of the sprue with cover 11
Gas interface is reserved on son, the gas interface connects the gas for being discharged or sucking when phase-change material volume change by taking over
It is connected to buffer unit.The storage density and heat exchange property of plate 4 are improved by the combination of phase-change material and plate 13.
Can be organic matter such as paraffin etc., inorganic matter such as hydration as the phase-change material described in a kind of preferentially selection scheme
Salt etc., phase transformation lotion such as paraffin/aqueous emulsion etc., phase-change material/matrix such as Composite Paraffin/Expanded Graphite Phase-Change material etc..
As a kind of preferentially selection scheme, be preinstalled on the plate 13 when plate is clamped be attached at two plates it
Between seal washer 12, the washer 12 on plate 13 is in close contact with adjacent plate 4, front plate 1, rear plate 7, it is fixed go out
Fluid course.
As a kind of preferentially selection scheme, the material of the washer 12 is rubber, fiber or graphite.
As a kind of preferentially selection scheme, the plate 13 is using channel floor, embossing plate or corrugated plating, to improve plate
Heat transfer property.The striated surface and 12 shape of washer of the plate 13 of adjacent two plate 4 are on the contrary, to isolate Different Fluid Flow
Road.
As a kind of preferentially selection scheme, the material of the plate 4 uses stainless steel, copper alloy, graphite or aluminium alloy.
As a kind of preferentially selection scheme, control is preinstalled in fluid through-hole, that is, fluid course 15 of 4 four jiaos of the plate
The valve of flow direction processed, the type of flow of the fluid in runner can by adjust the valve in advance in the fluid course 15 into
Row control, the type of flow can be paralleling model as shown in Figure 2 or series model as shown in Figure 3.When heat transfer effect is paid no attention to
It can be preset in the valve in fluid course 15 by control when thinking and change fluid-flow mode, series connection as shown in Figure 4 and Figure 5
Series-parallel connection pattern after parallel connection combines extends residence time of the fluid in heat exchanger to increase flow, enhanced heat exchange effect, no
It crosses and also will increase pressure drop accordingly.
Each group of plate 4 forms a heat exchange unit, is used when being flowed between each plate of the fluid in same heat exchange unit
Mode in parallel, using the type of flow of series winding between various heat exchange unit, with augmentation of heat transfer effect.
As a kind of preferentially selection scheme, the front plate 1, rear plate 7, plate 4 outer wall be provided with heat-preservation cotton or
Insulation fibre prevents temperature to external diffusion.
As shown in Figure 1, fluid-flow mode paralleling model, dark arrow indicates hot fluid flow direction, light arrow in figure
Head indicates that cold fluid flow direction, hot fluid enter heat exchanger from thermal fluid inlet 2, be allocated in each corresponding runner, by with phase
It is converged in diagonal runner after adjacent two plates 4 heat exchange, is finally flowed out from the hot fluid outlet ports 10 of rear plate 7, complete hot-fluid
Body flows.The type of flow of cold fluid is similar to hot fluid, enters heat exchanger from cold fluid inlet 9, is allocated in each corresponding runner,
It converges in diagonal runner after exchanging heat with two adjacent plates 4, is finally flowed out from cold fluid outlet 3, complete cold fluid
Flowing.
A kind of phase-change material of filling, the quantity of plate 4 can be adjusted according to demand in every group of plate 4 of above-described embodiment
It is whole.The difference of various phase-change materials essentially consists in phase transition temperature, and one group of plate 4 for being filled with identical phase-change material is one group of heat exchange
Unit is continuously decreased according to the phase transition temperature of hot fluid flow direction heat exchange unit, and such as the first heat exchange unit is 90 DEG C, second exchanges heat
Unit is 80 DEG C, third heat exchange unit is 70 DEG C or the first heat exchange unit is 80 DEG C, the second heat exchange unit is 70 DEG C, third is changed
Hot cell is 60 DEG C etc..Plate（4）Both sides are respectively cold fluid and hot fluid, i.e. plate is contacted with cold fluid and hot fluid simultaneously, therefore
Accumulation of heat, heat release or direct heat transfer can be carried out according to service condition, accumulation of heat, heat exchange is made to be combined into one.
The operation principle of above-described embodiment is：
Transferred heat in phase-change material when hot fluid flows through runner, phase-change material heat absorption, the heat of absorption by sensible heat and
Latent heat two ways is stored, and the variation that phase-change material occurs includes mainly three parts, is that be warming up to phase transition temperature attached first
Closely, i.e. sensible heat heat accumulation；Then phase transition occurs, liquid phase, i.e. latent heat heat accumulation are changed by solid phase；Finally continue to heat up, until with
Hot fluid temperature is identical, i.e. sensible heat heat accumulation.When cold fluid flow is through runner, heat is transferred to from phase-change material in cold fluid, phase
Become material exothermic, process is similar with heat absorption, also includes sensible heat and latent heat two ways.The above process can be carried out at the same time can also
Individually carry out.
The temperature gradient energy storage heat exchanger that above-described embodiment provides is designed on the basis of plate heat exchanger, is fully sent out
The advantages such as plate heat exchanger heat transfer coefficient is high, floor space is small, light-weight, easy to make are waved, current heat storage exchanger is overcome
The technological deficiency that heat exchange efficiency is low, quantity of heat storage is small, it is big, environmentally protective in conjunction with phase-change material quantity of heat storage, selection it is various the features such as, can
It exchanges heat simultaneously with cold fluid and hot fluid, forms the stabilization heat storage and exchange system for integrating heat accumulation and heat exchange, realize and improve the energy
The purpose of utilization ratio.Energy utilization efficiency is improved by the phase-change material with different phase transition temperatures of a large amount of high enthalpies,
It can be applied to the fields such as solar thermal collector, heat pump heat collector, industrial afterheat recovery.The design of cold fluid and hot fluid independent flow passage carries
High operational suitability.System have energy storage density it is big, it is easy to operate, it is adaptable the advantages that.
The present invention is designed on the basis of plate heat exchanger, is given full play to plate heat exchanger heat transfer coefficient height, is taken up an area
The advantages such as area is small, light-weight, easy to make, it is big, environmentally protective in conjunction with phase-change material quantity of heat storage, selection is various the features such as, it is real
Now improve the purpose of efficiency of energy utilization.
The above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all the present invention
All any modification, equivalent and improvement etc., should be included in the protection of the claims in the present invention made by within spirit and principle
Within the scope of.
Claims (10)
1. a kind of temperature gradient energy storage heat exchanger, it is characterised in that：Including front plate (1), rear plate (7), hermetically fold successively
Be added between the front plate (1), rear plate (7) formed fluid channel at least two groups plate (4), the front plate (1),
Rear plate (7) and plate (4) quadrangle are correspondingly arranged on circular flow through-hole, and phase has been filled in plate (4) described in every group
The phase transition temperature of same phase-change material, the phase-change material in plates (4) that difference is organized is successively decreased successively along hot fluid flow direction.
2. temperature gradient energy storage heat exchanger according to claim 1, it is characterised in that：The plate (4) mainly has two
Plate (13) is surrounded with frame (14), and inside forms cavity for storing phase-change material, is arranged at the top of the frame (14)
It is useful for the sprue with cover (11) of filling phase-change material, gas interface is reserved on the lid of the sprue (11) with cover,
The gas for being discharged or sucking when phase-change material volume change is connected to buffer unit by the gas interface by taking over.
3. temperature gradient energy storage heat exchanger according to claim 1, it is characterised in that：The phase-change material is organic phase
Become material, inorganic phase-changing material or composite phase-change material.
4. temperature gradient energy storage heat exchanger according to claim 2, it is characterised in that：It is preinstalled with and works as on the plate (13)
Plate is attached at the washer (12) to seal between two plates when being clamped.
5. temperature gradient energy storage heat exchanger according to claim 4, it is characterised in that：The material of the washer (12) is rubber
Glue, fiber or graphite.
6. temperature gradient energy storage heat exchanger according to claim 4, it is characterised in that：The plate (13) uses raceway groove
Plate, embossing plate or corrugated plating, the striated surface and washer (12) shape of the plate (13) of adjacent two plate (4) are opposite.
7. temperature gradient energy storage heat exchanger according to claim 1, it is characterised in that：The material of the plate (4) uses
Stainless steel, copper alloy, graphite or aluminium alloy.
8. temperature gradient energy storage heat exchanger according to claim 1, it is characterised in that：The fluid of plate (4) quadrangle
The valve of control flow direction is preinstalled in through-hole.
9. temperature gradient energy storage heat exchanger according to claim 1, it is characterised in that：The front plate (1), rear plate
(7), the outer wall of plate (4) is provided with heat-preservation cotton or insulation fibre.
10. temperature gradient energy storage heat exchanger according to claim 1, it is characterised in that：The front plate (1), rear plate
(7) top guide bar (5) and lower guide rod (6), the front plate (1), rear plate (7) and plate are fixedly installed between upper and lower side respectively
(4) between connection is clamped by more fastening bolts (8).
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| CN201810401096.0A CN108413796A (en) | 2018-04-28 | 2018-04-28 | A kind of temperature gradient energy storage heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810401096.0A CN108413796A (en) | 2018-04-28 | 2018-04-28 | A kind of temperature gradient energy storage heat exchanger |
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Family
ID=63137362
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095005A (en) * | 2019-05-28 | 2019-08-06 | 西安热工研究院有限公司 | A kind of system and its working method using energy storage type heat exchanger |
| 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 |
| CN111238282A (en) * | 2020-02-27 | 2020-06-05 | 山东大学 | Plate-type energy storage device, system and energy storage method |
| CN111504109A (en) * | 2020-04-23 | 2020-08-07 | 中国科学院工程热物理研究所 | Packed bed energy storage device with continuous and stable outlet temperature |
| CN112066770A (en) * | 2020-09-21 | 2020-12-11 | 中国建筑科学研究院有限公司 | System of energy storage source for building |
| CN112432371A (en) * | 2019-08-23 | 2021-03-02 | 中国科学院海洋研究所 | Solar gradient phase change heat storage and release system for seawater industrial culture |
| CN114216357A (en) * | 2021-12-14 | 2022-03-22 | 青岛理工大学 | Nearly zero energy consumption building system plate heat exchanger based on hold energy |
| CN114739221A (en) * | 2022-03-25 | 2022-07-12 | 武汉理工大学 | LNG-IHES-oriented whole-ship cold and heat energy cascade scheduling system and method |
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| CN111504109A (en) * | 2020-04-23 | 2020-08-07 | 中国科学院工程热物理研究所 | Packed bed energy storage device with continuous and stable outlet temperature |
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| CN114216357A (en) * | 2021-12-14 | 2022-03-22 | 青岛理工大学 | Nearly zero energy consumption building system plate heat exchanger based on hold energy |
| CN114216357B (en) * | 2021-12-14 | 2023-05-30 | 青岛理工大学 | Energy storage-based near zero energy consumption building system plate heat exchanger |
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