CN115900408A - Heat exchange device, movable heat exchange equipment and heat exchange method - Google Patents
Heat exchange device, movable heat exchange equipment and heat exchange method Download PDFInfo
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- CN115900408A CN115900408A CN202111160475.3A CN202111160475A CN115900408A CN 115900408 A CN115900408 A CN 115900408A CN 202111160475 A CN202111160475 A CN 202111160475A CN 115900408 A CN115900408 A CN 115900408A
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- heat
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- accumulator
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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
Abstract
The invention relates to the technical field of heat exchange, and discloses a heat exchange device, movable heat exchange equipment and a heat exchange method.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a heat exchange device, movable heat exchange equipment and a heat exchange method.
Background
The heat is stored by mobile thermal storage technology and then spatial transfer of the heat can be achieved by means of a vehicle. The core technology is to realize the storage and exchange of heat. In the prior art, water or steam is generally used as a heat exchange medium, for example, CN201310491186.0 realizes the exchange of heat among heat accumulators by arranging a steam pipeline, a cold water pipeline and a plurality of heating pipe rows; CN201320119978.0 adopts a heat pipe mode to perform heat exchange; CN201510190952.9 is composed of an upper box body and a lower box body, and distilled water is used as an intermediate heat exchange medium. In the technology, the heat storage medium is water or a phase-change material, the heat exchange medium is water, and although the heat exchange mode is that the pipeline is practical, the risk of leakage of the heat exchange medium in the pipeline exists; and because the heat exchange medium is water, the heat exchange temperature is limited, and the problems of low heat storage or heat release speed, low heat exchange efficiency and the like exist due to the fact that the heat exchange mode is realized by the contact of the pipeline and the heat storage medium.
Disclosure of Invention
The invention aims to solve the problem that the heat exchange efficiency is limited by the contact area between a heat exchange coil and a material in the prior art, and provides a heat exchange device which has the advantages of high heat storage temperature, high heat exchange speed and small occupied area.
In order to achieve the above purpose, the present invention provides a heat exchange device, including a heat preservation housing and a heat preservation cavity formed by the heat preservation housing, wherein a bin with a heat accumulator and a flow guide pipe arranged outside the bin and used for circulating a heat exchange medium are arranged in the heat preservation cavity, the flow guide pipe is communicated with a heat exchange channel arranged at the top of the bin, and the heat exchange channel is provided with a heat accumulator feed inlet and used for enabling the heat exchange medium to directly contact with the heat accumulator to realize heat exchange.
Preferably, the heat exchange device further comprises a heat exchanger provided on the side wall of the heat preservation shell and having a first inlet and a first outlet, and the first inlet is communicated with the heat exchange channel and is used for transferring heat of the heat accumulator to the heat exchanger to exchange heat with the outside so as to discharge the heat.
Preferably, the bottom of the bin is further provided with a conical heat accumulator discharge port provided with a control valve, and the heat accumulator discharge port is connected with the heat accumulator feed port through a transmission device and is used for conveying the heat accumulator to the top from the bottom of the bin to the heat exchange channel for heat exchange. Preferably, the inner side wall of the storage bin is an inclined surface, so that the heat accumulator can easily flow into the conveying device for transportation.
Preferably, the conveying speed of the conveying device can be adjusted to regulate and control the heat exchange speed of the heat accumulator and the heat exchange medium.
Preferably, the conveying means is a conveyor belt or a gas lift conveyor.
Preferably, a fan is arranged on the flow guide pipe for introducing the heat exchange medium into the heat exchange channel for heat exchange.
In a second aspect, the invention provides a mobile heat exchange apparatus comprising a heat exchange device according to the invention and a vehicle for connecting and transporting the heat exchange device.
The invention also provides a heat exchange method, which is implemented by the heat removal device, a pipeline does not need to be laid in the heat accumulator, the heat accumulator is lifted to the heat exchange channel from the bottom of the silo by the transmission device, meanwhile, the fan introduces the heat exchange medium into the heat exchange channel to directly contact with the heat accumulator to realize heat exchange, and the heat exchange medium after heat exchange outputs and utilizes heat through the heat exchanger.
Preferably, the heat accumulator is a solid particle.
Preferably, the heat accumulator has a diameter of 0.0001 to 100mm, preferably 0.001 to 10mm.
Preferably, the heat accumulator is selected from one or more of ceramic particles, metal particles, carbon particles, and encapsulated phase change particles; and/or
The heat exchange medium is selected from nitrogen and/or argon.
Compared with the prior art, the solid particles are used as the heat accumulator, and no heat exchange pipeline is laid in the heat accumulator, so that the problem of leakage of a liquid heat exchange medium and potential safety hazards of pressure caused by liquid-gas phase conversion are fundamentally avoided; meanwhile, the heat accumulator and the heat exchange medium are in a flowing state, and the heat exchange medium and the heat accumulator are in direct contact heat exchange after entering the heat exchange channel, so that the heat storage temperature and the heat storage quality are improved, and the problem of uneven heat storage temperature caused by pipeline distribution in the prior art is avoided. In addition, the heat exchange area is enlarged by controlling the size of the heat accumulator, so that higher heat exchange rate can be realized, and the aims of quick charge and quick discharge can be fulfilled.
In one embodiment of the prior art, a hot water tank is used as a movable heat storage container, water is used as a heat storage medium, high-temperature water or steam is directly injected into the hot water tank during heat storage, the hot water or steam is discharged through a pipeline valve during heat release, and the heat storage temperature is lower than 180 ℃. In the above embodiment, the heat storage temperature is lower than that of the present invention, and when the temperature exceeds 100 ℃, the hot water tank needs to bear pressure. High-temperature heat sources cannot be stored, and potential safety hazards of pressure exist.
In one embodiment of the prior art, a phase-change material (e.g., paraffin, molten salt) is used as a heat storage body, and a coil is arranged in the heat storage body, so that during heat storage, a heat exchange medium (e.g., high-temperature steam) exchanges heat to the heat storage body through the coil, and during heat release, the heat of the heat storage body is exchanged to the heat exchange medium (e.g., water) in the coil through the coil, so that heat storage/release is realized. The heat exchange mode of the invention adopts the contact of gas and heat accumulator to replace the contact of heat exchange medium and heat exchange material through the coil pipe, compared with the prior art, the invention increases the heat exchange area and improves the heat exchange speed; in order to realize rapid heat storage, the heat storage particles can be heated in advance, the high-temperature heat storage particles are directly poured into the storage bin during heat storage, and the heat storage particles can be replaced at any time after the performance of the heat storage particles is reduced; the heat storage material and the heat exchanger are uniformly distributed in the heat insulation layer, heat release can be realized through gas flowing, the flowing of gas is easier than that of an aqueous medium, and the problem of liquid leakage is not worried.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic view of an embodiment of a heat exchange apparatus of the present invention.
Description of the reference numerals
1, a heat preservation shell; 12 heat preservation cavities; 2, a heat exchanger; 21 a first inlet; 22 a first outlet; 3, a heat accumulator; 4 a transmission device; 5, a fan; 6 a transport means; 7 a heat exchange channel; 71 heat accumulator feed inlet; 8, a flow guide pipe; 9, a stock bin; 91 heat accumulator discharge port; 92 control the valve.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the terms of orientation such as "upper, lower, left, and right" are used to indicate the orientation in the mounted and used state. "inner and outer" refer to the inner and outer contours of the respective component itself.
As shown in fig. 1, the present invention provides a heat exchange device, which includes a thermal insulation housing 1 and a thermal insulation cavity 12 formed by the thermal insulation housing 1, wherein a bin 9 equipped with a heat accumulator and a flow guide pipe 8 arranged outside the bin 9 and used for allowing a heat exchange medium to flow through are arranged in the thermal insulation cavity 12, the flow guide pipe 8 is communicated with a heat exchange channel 7 arranged at the top of the bin 9, and the heat exchange channel 7 is provided with a heat accumulator feed inlet 71 and used for enabling the heat exchange medium to directly contact with the heat accumulator 3 to realize heat exchange.
It should be noted that, the heat accumulator 3 is lifted from the bottom of the bin 9 to the heat exchange channel 7 at the top of the bin 9, the heat exchange medium is also introduced into the heat exchange channel 7 through the fan 5, and the heat accumulator 3 is in direct contact with the heat exchange medium to realize heat exchange, so that a heat exchange pipeline does not need to be laid in the heat accumulator 3, the problem that the heat exchange cannot be realized due to the fact that a flow channel is blocked due to accumulation of solid materials is avoided, the heat storage density of the system is effectively improved, the heat exchange efficiency is improved, the purpose of fast charging and fast discharging can be achieved, meanwhile, the risk of fluid leakage does not exist, the heat storage temperature can be increased to a higher temperature, and high-quality heat recycling is realized.
In order to effectively transfer the heat of the heat accumulator, the heat exchange device further comprises a heat exchanger 2 which is arranged on the side wall of the heat-insulating shell 1 and is provided with a first inlet 21 and a first outlet 22, wherein the first inlet 21 is communicated with the heat exchange channel 7, and the heat of the heat accumulator 3 is transferred to the heat exchanger 2 to be subjected to heat exchange with the outside so as to discharge or store the heat. When discharging heat, after the heat accumulator 3 with heat exchanges heat with the heat exchange medium in the heat exchange channel 7, the heat accumulator 3 falls into the bin 9, and the heat exchange medium with heat enters the first inlet 21 of the heat exchanger 2 and is discharged for use through the first outlet 22; during the heat-retaining, the heat gets into through the first export 22 of heat exchanger 2, gets into heat transfer passageway 7 and heat accumulator 3 contact heat transfer through first entry 21, and heat accumulator 3 after the heat transfer gets up the heat storage, falls into the storage in the feed bin 9 and keeps, can discharge the heat when needs and use. Of course, other heat storage methods exist in the invention, for example, the heat accumulator 3 which is already heated in other places is directly injected into the storage bin. The sample invention is equivalent to a heat storage device, collects and stores the heat dissipated in the air, and can be reused when needed, thereby saving the production cost, reasonably using the resources, and replacing the heat accumulator 3 at any time when the heat storage performance of the heat accumulator 3 is reduced.
In the invention, the bottom of the silo 9 is also provided with a conical heat accumulator discharge hole 91 for installing a control valve 92, and the heat accumulator discharge hole 91 is connected with the heat accumulator feed hole 71 through a transmission device 4 and is used for conveying the heat accumulator 3 from the bottom of the silo 9 to the top of the heat exchange channel 7 for heat exchange. During heat exchange, the control valve 92 is adjusted, the heat accumulator 3 orderly enters the transmission device 4 through the discharge hole 91, the transmission device 4 lifts the heat accumulator 3 to the heat exchange channel 7, all the heat accumulators 3 are guaranteed to be in contact with heat exchange media, and the problems of uneven heat exchange and low heat exchange efficiency caused by the influence of the flow channel on the heat exchange media are avoided.
In addition, the inner side wall of the bin 9 is an inclined surface, and is used for enabling the heat accumulator 3 to easily flow into the conveying device 4 for transportation. It should be noted that, in order to ensure the heat exchange efficiency of the heat accumulator 3 flowing in the silo 9 sequentially, the internal structure of the silo 9 may be designed according to the property and size of the heat accumulator 3, for example, when the heat accumulator 3 is large in size and regular in shape, the heat accumulator 3 may flow in steps only through the inclined surface; when the heat accumulator 3 is small in size, irregular in shape and high in stacking density, a diversion trench needs to be designed in the bin 9 to ensure the sequential flow and the uniform heat exchange of the heat accumulator 3.
According to one embodiment of the present invention, the transport speed of the conveyor 4 is adjustable for controlling the heat exchange rate of the heat storage body 3 with the heat exchange medium. It should be noted that, in the prior art, the speed of the heat exchange speed is limited and uncontrollable by the contact form between the heat exchange pipeline and the heat accumulator 3, the speed of the conveying device 4 can be adjusted to control the heat exchange speed, and further, the heat exchange medium can be gas, so that the heat exchange medium with limited heat storage temperature such as water (steam), oil, molten salt and liquid metal does not need to be stored, therefore, the heat exchange device can store higher temperature and can adjust and control the heat exchange speed according to production requirements.
According to an embodiment of the present invention, the transportation mode of the transportation device 4 is a variable speed transportation or a gas lift transportation of a conveyor belt, and the corresponding transportation mode can be selected according to the property of the heat accumulator 3.
In the invention, the pipeline of the flow guide pipe 8 is provided with a fan 5 for introducing the heat exchange medium into the heat exchange channel 7 for heat exchange. The fan 5 may be reversible so that heat inside the heat exchanger may be discharged and heat outside may be stored.
In a second aspect, the invention provides a mobile heat exchange apparatus comprising a heat exchange device according to the invention and a transport means 6 for connecting and transporting the heat exchange device. In order to make the heat exchanger apparatus not limited by regions, the heat exchanger apparatus can be combined with the transportation means 6 and flexibly moved to each plant to store and release heat.
The third aspect of the present invention provides a heat exchange method, which is implemented by the heat removal device of the present invention, without laying a pipeline in the heat accumulator 3, the transportation device 4 lifts the heat accumulator 3 from the bottom of the bunker 9 to the heat exchange channel 7, and at the same time, the fan 5 introduces the heat exchange medium into the heat exchange channel 7 to directly contact with the heat accumulator 3 to realize heat exchange. It should be noted that, need to distribute the replacement hot plate in heat accumulator 3 among the prior art, heat transfer medium flows in the heat transfer dish, heat exchange efficiency receives the area of contact of heat transfer dish with heat accumulator 3, if will improve heat exchange efficiency, then need arrange a large amount of heat transfer dishes, the space that can occupy heat accumulator 3 from this reduces heat-retaining density, and receive the influence of heat transfer dish shape, be difficult to realize even heat transfer, it is low still to have the boiling point if heat transfer medium is liquid, heat-retaining temperature promotes the limited problem in space, and take place to leak and the risk of heat accumulator 3 emergence reaction. According to the invention, a heat exchange tube does not need to be arranged in the heat accumulator 3, but a heat exchange medium and the heat accumulator 3 flow simultaneously and directly contact and exchange heat in the heat exchange channel 7, so that the heat exchange speed is controllable, the heat exchange efficiency is high, the heat storage temperature is high, and the problems of uneven heat exchange and heat exchange medium leakage are avoided.
In the present invention, the heat storage body 3 is a solid particle. Specifically, at ordinary times, energy sources such as low-price valley electricity and industrial waste heat are used for heating solid particles to store energy, and the solid particles can be used in a high-peak electricity utilization period with high electricity price, so that energy is saved, and production cost is reduced.
In the present invention, the heat accumulator 3 has a particle diameter of 0.0001 to 100mm, preferably 0.001 to 10mm. Wherein, the heat exchange efficiency can be improved by reasonably selecting the particle diameter of the heat accumulator 3.
The heat exchange medium is selected from nitrogen and/or argon.
The following examples were carried out using a mobile heat exchange apparatus as shown in fig. 1, comprising: heat preservation casing 1, the heat preservation chamber 12 that forms by heat preservation casing 1, set up the feed bin 9 that is equipped with the heat accumulator in the heat preservation chamber 12 and set up the honeycomb duct 8 that supplies the heat transfer medium circulation outside the feed bin 9, honeycomb duct 8 intercommunication sets up the heat transfer passageway 7 at the top of feed bin 9, heat transfer passageway 7 sets up heat accumulator feed inlet 71, is used for making the heat transfer medium with heat accumulator 3 direct contact realizes the heat exchange.
Preferably, the heat exchange device further comprises a heat exchanger 2 provided on the side wall of the insulated shell 1 and having a first inlet 21 and a first outlet 22, wherein the first inlet 21 is communicated with the heat exchange channel 7 for allowing heat exchange outside the heat accumulator 3 to discharge or store heat.
Preferably, the bottom of the silo 9 is further provided with a conical heat accumulator discharge port 91 provided with a control valve 92, and the heat accumulator discharge port 91 is connected with the heat accumulator feed port 71 through a conveying device 4 and is used for conveying the heat accumulator 3 from the bottom to the top of the silo 9 and feeding the heat accumulator into the heat exchange channel 7 from the heat accumulator feed port 71 for heat exchange.
Preferably, the inner side wall of the silo 9 is an inclined surface, so that the heat accumulator 3 can easily flow into the conveying device 4 for transportation.
Preferably, the conveying speed of the conveying device 4 can be adjusted to regulate the heat exchange speed of the heat accumulator 3 and the heat exchange medium.
Preferably, the conveying means 4 is a conveyor belt or a gas lift conveyor.
Preferably, a fan 5 is arranged on the pipeline of the flow guide pipe 8 and used for introducing the heat exchange medium into the heat exchange channel 7 for heat exchange.
Examples
Heat storage process, directly heating SiO with diameter of 1mm at 600 deg.C 2 The particles are injected into a storage bin 9; when heat is released, the control valve of the heat accumulator discharge port 91 is opened, and SiO is discharged 2 The particles flow into the transmission device 4, are lifted to the heat exchange channel 7 through the transmission device 4, the fan 5 is started, and air is used as a heat exchange medium to react with SiO 2 The particles are contacted for heat exchange, the heated air enters the heat exchanger 2, the outside water is heated from 25 ℃ to 60 ℃ through the first outlet 22 and is output as a heat source, and the extraction and utilization of heat are realized.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, and these simple modifications all belong to the protection scope of the invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the different embodiments of the present invention can be made, and the same should be considered as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (12)
1. The utility model provides a heat transfer device, its characterized in that, including heat preservation casing (1), by heat preservation chamber (12) that heat preservation casing (1) formed, set up feed bin (9) and the setting that are equipped with the heat accumulator in heat preservation chamber (12) and be in honeycomb duct (8) that feed bin (9) supplied the heat transfer medium circulation outward, honeycomb duct (8) intercommunication sets up heat transfer passageway (7) at the top of feed bin (9), heat transfer passageway (7) set up heat accumulator feed inlet (71), are used for making the heat transfer medium with heat accumulator (3) direct contact realizes the heat exchange.
2. The heat exchange device according to claim 1, further comprising a heat exchanger (2) provided on the side wall of the heat-insulating shell (1) and having a first inlet (21) and a first outlet (22), wherein the first inlet (21) is communicated with the heat exchange channel (7) and is used for heat exchange outside the heat accumulator (3) so as to discharge or store heat.
3. The heat exchange device according to claim 1 or 2, wherein the bottom of the silo (9) is further provided with a conical heat accumulator discharge port (91) provided with a control valve (92), and the heat accumulator discharge port (91) is connected with the heat accumulator feed port (71) through a conveying device (4) and is used for conveying the heat accumulator (3) from the bottom of the silo (9) to the top to be fed into the heat exchange channel (7) from the heat accumulator feed port (71).
4. The heat exchange device according to claim 3, wherein the inner side wall of the bin (9) is an inclined surface for facilitating the heat accumulator (3) to flow into the conveying device (4) for transportation.
5. The heat exchange device according to claim 3 or 4, wherein the transport speed of the transport device (4) is adjustable for regulating the heat exchange rate of the heat accumulator (3) with the heat exchange medium.
6. The heat exchange device according to claim 4 or 5, wherein the conveying means (4) is a conveyor belt-containing conveying or a gas lift conveying.
7. The heat exchange device according to any one of claims 1 to 6, wherein a fan (5) is arranged on the pipeline of the flow guide pipe (8) and used for introducing the heat exchange medium into the heat exchange channel (7) for heat exchange.
8. Mobile heat exchange equipment, characterized in that it comprises at least one heat exchange device according to any one of claims 1-7 and means of transport (6) for connecting and transporting the heat exchange device.
9. A heat exchange method, characterized in that the method is implemented by the heat exchange device of any one of claims 1-7, without laying pipes in the heat accumulator (3), the conveying device (4) lifts the heat accumulator (3) from the bottom of the silo (9) and feeds the heat accumulator into the heat exchange channel (7) from the heat accumulator feed inlet (71), and the fan (5) introduces the heat exchange medium into the heat exchange channel (7) to directly contact with the heat accumulator (3) for heat exchange.
10. The heat exchange method according to claim 9, wherein the heat storage body (3) is a solid particle.
11. A method according to claim 9 or 10, wherein the heat accumulator (3) has a particle diameter of 0.0001 to 100mm, preferably 0.001 to 10mm.
12. The heat exchange method according to any one of claims 9 to 10, wherein the heat accumulator (3) is selected from one or more of ceramic particles, metal particles, carbon particles and encapsulated phase-change particles; and/or the heat exchange medium is selected from nitrogen and/or argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160475.3A CN115900408A (en) | 2021-09-30 | 2021-09-30 | Heat exchange device, movable heat exchange equipment and heat exchange method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160475.3A CN115900408A (en) | 2021-09-30 | 2021-09-30 | Heat exchange device, movable heat exchange equipment and heat exchange method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115900408A true CN115900408A (en) | 2023-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111160475.3A Pending CN115900408A (en) | 2021-09-30 | 2021-09-30 | Heat exchange device, movable heat exchange equipment and heat exchange method |
Country Status (1)
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| CN (1) | CN115900408A (en) |
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2021
- 2021-09-30 CN CN202111160475.3A patent/CN115900408A/en active Pending
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