CN113324277B - Metal phase transformation heat accumulation heating device - Google Patents
Metal phase transformation heat accumulation heating device Download PDFInfo
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- CN113324277B CN113324277B CN202110597347.9A CN202110597347A CN113324277B CN 113324277 B CN113324277 B CN 113324277B CN 202110597347 A CN202110597347 A CN 202110597347A CN 113324277 B CN113324277 B CN 113324277B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/02—Arrangement of mountings or supports for radiators
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
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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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- Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to the technical field of energy storage equipment, in particular to a metal phase transformation heat storage and supply device, which comprises: the bottom of the shell is provided with a supporting component; the heat storage assembly is arranged in the shell, the heat storage assembly is arranged on the upper side of the supporting assembly, the heat storage assembly comprises heating units and heat storage units which are alternately arranged along the height direction, the heat storage units comprise a plurality of heat storage modules which are arranged in an array, accommodating cavities are formed in the heat storage modules and are used for accommodating metal phase change materials, and ventilation flow channels are reserved among the heat storage modules; the air distribution plate is uniformly provided with a plurality of through holes and is arranged between the air inlet and the heat storage component. The electric energy is converted into heat energy and stored in the electricity consumption valley, and the pre-stored heat energy can be utilized to produce and live in the electricity consumption peak period, so that the full and reasonable utilization of resources and the stable operation of the power grid are ensured. Through setting up the air distribution board in air intake one side for the air can fully exchange heat with heat storage subassembly, can improve holistic heat exchange quantity and the heat transfer ability of equipment.
Description
Technical Field
The invention relates to the technical field of energy storage equipment, in particular to a metal phase transformation heat storage and supply device.
Background
The electric heat storage technology is a technology for converting electric energy into heat energy and storing the heat energy for utilization, and is an important means for solving the mismatch of the supply and demand time and space of the electric energy, realizing peak clipping and valley filling of the power grid load and improving the stability of a power system. From the point of view of energy storage costs, the cost of heat storage is far lower than the cost of electricity storage, so that for electric energy which is thermally utilized in the final way, the energy storage by means of heat storage is a more economical way. The higher the heat storage temperature is, the higher the grade of the stored heat energy is, and the higher the use value is, so the high-temperature heat storage technology is the key point of the development of the electric heat storage technology.
Currently, high temperature heat storage technology generally refers to heat storage technology with operating temperatures above 300 ℃. In the prior art, the high-temperature physical heat storage equipment mostly adopts magnesia bricks, concrete and the like as heat storage materials, but because the sensible heat storage materials such as magnesia bricks, concrete and the like have low heat conductivity coefficient, low volume heat storage density and large temperature attenuation amplitude in the heat release process, the equipment has slow temperature rising process, less heat storage, poorer heat release capacity and huge volume.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect of poor thermal performance of high-temperature physical heat storage equipment in the prior art, thereby providing the metal phase transformation heat storage and supply device.
In order to solve the technical problems, the invention provides a metal phase power transformation heat storage and supply device, which comprises:
the shell is provided with a supporting component at the bottom, and an air inlet and an air outlet are respectively arranged on two opposite sides of the shell;
the heat storage assembly is arranged in the shell, the heat storage assembly is arranged on the upper side of the supporting assembly, the heat storage assembly comprises heating units and heat storage units which are alternately arranged along the height direction, the heat storage units comprise a plurality of heat storage modules which are arranged in an array, accommodating cavities are formed in the heat storage modules and are used for accommodating metal phase change materials, and ventilation flow channels are reserved among the heat storage modules;
the air distribution plate is uniformly provided with a plurality of through holes and is arranged between the air inlet and the heat storage component.
Optionally, the heat exchange device further comprises a heat exchange component, wherein the heat exchange component is arranged on one side, provided with an air outlet, of the shell, the heat exchange component is arranged between the air outlet and the heat storage component, a liquid inlet and a liquid outlet are formed in the heat exchange component, the liquid inlet and the liquid outlet penetrate through the shell, the liquid inlet is used for introducing heat exchange liquid, and the liquid outlet is used for outputting the heat exchange liquid.
Optionally, the heat exchange component is a coil pipe structure extending along the height direction of the heat storage component, and the pipeline of the heat exchange component is provided with heat absorption fin plates which are perpendicular to the axis of the pipeline of the heat exchange component.
Optionally, a plurality of heat conducting fins are arranged on the outer side wall of the heat storage module in a direction away from the heat storage module in an extending manner.
Optionally, the heat conducting fins between adjacent heat storage modules are staggered.
Optionally, the heat conducting fin is provided with a heat conducting hole.
Optionally, the heating unit includes a plurality of heating fins arranged at intervals and a heating rod arranged through the heating fins.
Optionally, the heating fins and the heat conducting fins are perpendicular to each other.
Optionally, be equipped with a plurality of first wind channels of intercrossing on the supporting component, a plurality of first wind channels cut apart supporting component into a plurality of supporting units, and the side alternately is provided with a plurality of second wind channels on the supporting unit, and the degree of depth in second wind channel is less than the degree of depth in first wind channel, and the air intake sets up towards the supporting component.
Optionally, a base is installed at the bottom of the shell, and a heat insulation pad is arranged between the base and the shell.
The technical scheme of the invention has the following advantages:
1. the invention provides a metal phase transformation heat accumulation and supply device, which comprises: the shell is provided with a supporting component at the bottom, and an air inlet and an air outlet are respectively arranged on two opposite sides of the shell; the heat storage assembly is arranged in the shell, the heat storage assembly is arranged on the upper side of the supporting assembly, the heat storage assembly comprises heating units and heat storage units which are alternately arranged along the height direction, the heat storage units comprise a plurality of heat storage modules which are arranged in an array, accommodating cavities are formed in the heat storage modules and are used for accommodating metal phase change materials, and ventilation flow channels are reserved among the heat storage modules; the air distribution plate is uniformly provided with a plurality of through holes and is arranged between the air inlet and the heat storage component.
When electricity consumption is low, the heating unit is electrified, the heating power supply converts electric energy into heat energy and stores the heat energy in the plurality of heat storage modules, when the heat consumption is needed, air is introduced into the ventilation flow channel through air inlet of the ventilation assembly, heat in the heat storage modules is exchanged with the heat storage modules, heat in the heat storage modules is taken out, and heated high-temperature air can be utilized by a user after flowing out from the air outlet. The system can utilize pre-stored heat energy to produce and live in the electricity peak period, or directly utilizes heated air to heat water to produce high-temperature high-pressure steam for driving the steam turbine to generate electricity, and feeds the electric energy back to the power grid to realize peak clipping and valley filling of the electric power, so that full and reasonable utilization of resources and stable operation of the power grid are ensured. Through set up the air distribution board in air intake one side for the air that gets into from the air intake passes through the air distribution board, can rise earlier in the rethread through-hole enters into the ventilation runner of each layer's heat accumulation subassembly, make the air can carry out the heat transfer with the heat accumulation module of different layers respectively, make the distribution of the low temperature air of air in the heat accumulation subassembly more even, make the air can fully exchange heat with the heat accumulation subassembly, can improve equipment holistic heat transfer volume, improve heat transfer ability.
2. The invention provides a metal phase transformation heat storage and supply device, which also comprises a heat exchange component, wherein the heat exchange component is arranged on one side of a shell, which is provided with an air outlet, the heat exchange component is arranged between the air outlet and the heat storage component, a liquid inlet and a liquid outlet are arranged on the heat exchange component, the liquid inlet and the liquid outlet penetrate through the shell, the liquid inlet is used for introducing heat exchange liquid, and the liquid outlet is used for outputting the heat exchange liquid. The heat exchange component is added, and the heat exchange liquid is used as a heat exchange medium when air is used for exchanging heat, so that the hot liquid heat exchange medium is output or the steam is directly output, and the heat exchange component is used for a user to use or is directly used for driving the steam turbine to generate power. The intermediate heat exchange process is reduced, and the energy loss is reduced.
3. According to the metal phase transformation heat storage and supply device provided by the invention, the plurality of heat conduction fins are arranged on the outer side wall of the heat storage module in an extending way in the direction away from the heat storage module. Through setting up heat conduction fin in the heat accumulation module outside, in the heat conduction fin passes through the heat conduction fin transfer ventilation flow channel of metal phase change material phase change process production in the heat accumulation module, the air moves in ventilation flow channel, takes place the heat transfer with heat conduction fin between, can increase heat transfer area, improves heat exchange quantity for heat exchange efficiency, accelerate the rate of heating up of output air.
4. The metal phase transformation heat accumulation heating device provided by the invention is characterized in that the heat conduction fins are provided with heat conduction holes. The heat conduction holes are all arranged in the ventilation flow passage outside the accommodating cavity, so that the disturbance to ventilation air in the ventilation flow passage can be increased, and the aim of enhancing heat exchange is fulfilled.
5. The metal phase transformation heat accumulation and supply device provided by the invention is characterized in that a plurality of first air channels which are mutually intersected are arranged on a supporting component, the supporting component is divided into a plurality of supporting units by the plurality of first air channels, a plurality of second air channels are arranged on the upper side surfaces of the supporting units in an intersecting way, the depth of the second air channels is smaller than that of the first air channels, an air inlet is arranged towards the supporting component, and the first air channels are aligned with a ventilation runner. Air entering from the air inlet flows in the first air channel, can further rise, further enters into the ventilation flow channel, and fully exchanges heat with the heat conduction fins, and is communicated with the first air channel through the second air channel, so that the air can be filled into the first air channel, enters into the second air channel and is further evenly distributed to the lower side of the whole heat storage component, and the heat exchange effect of the heat storage unit of the bottom layer is enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a metal phase electric heat storage and supply device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a support assembly and a heat storage assembly according to an embodiment of the present invention.
Fig. 3 is a schematic view of a structure of another angle of the support assembly and the heat storage assembly according to the embodiment of the present invention.
Fig. 4 is a schematic structural view of a heating unit provided in an embodiment of the present invention.
Fig. 5 is a schematic structural view of a support assembly according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a heat exchange assembly provided in an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a heat storage module and a heat conducting fin in a matching installation mode according to an embodiment of the present invention.
Fig. 8 is a schematic view showing an arrangement of heat transfer fins between adjacent heat storage modules according to an embodiment of the present invention.
Fig. 9 is a front view of a thermal storage module provided in an embodiment of the invention.
Fig. 10 is a schematic structural diagram of a thermal storage module and a cover plate in a matched installation according to an embodiment of the present invention.
Reference numerals illustrate: 1. a housing; 2. a side cover; 3. a base; 4. a heat insulating mat; 5. a support assembly; 6. a thermal storage module; 7. a cover plate; 8. a heat conduction fin; 9. a heat conduction hole; 10. a heating rod; 11. a heating fin; 12. a first air duct; 13. a second air duct; 14. an air inlet; 15. an air outlet; 16. a wind distribution plate; 17. a heat exchange assembly; 18. a heat absorbing fin; 19. a liquid inlet; 20. and a liquid outlet.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 10, the metal phase power transformation heat storage and supply device provided in this embodiment includes: a housing 1, a heat storage assembly and a heat exchange assembly 17. The heat storage component is arranged in the inner cavity of the shell 1. In this embodiment, the casing 1 is selected to be rectangular, and corners on the outer side of the casing 1 are provided with rounded transitions. The shape of the housing 1 may also be cylindrical, conical, cubic, octahedral, etc., and the shape of the housing 1 may be changed according to the actual use environment or use requirement.
The side of the shell 1 is provided with a side cover 2, which is convenient for the installation, maintenance and replacement of various parts in the shell 1. A base 3 is provided at the bottom of the casing 1, and a heat insulating pad 4 is provided on the upper side of the base 3. A supporting plate serving as a supporting component 5 is arranged at the bottom in the inner cavity of the shell 1 and is made of high-temperature-resistant magnesia bricks. The heat insulation pad 4 isolates the base 3 from the support assembly 5, avoiding loss of thermal energy stored in the heat storage assembly from the base 3 at the bottom. An air inlet 14 and an air outlet 15 are respectively arranged on two opposite sides of the shell 1, the air inlet 14 is arranged below the right side of the shell 1, and the air inlet 14 is aligned with the supporting component 5.
The heat accumulation assembly is arranged in the shell 1, the heat accumulation assembly is arranged on the upper side of the supporting assembly 5, the heat accumulation assembly comprises heating units and heat accumulation units which are alternately arranged along the height direction, and the uppermost layer and the lowermost layer of the heat accumulation assembly are both heat accumulation units. The thermal storage unit comprises a plurality of thermal storage modules 6 arranged in a rectangular array or in a circumferential array, and in this embodiment, the thermal storage modules 6 are in a rectangular array. The heat storage module 6 is provided with a containing cavity for containing the metal phase change material. The thermal storage module 6 is made of a metal having a melting point far higher than that of the contained metal phase change material. An anti-corrosion coating is coated in the accommodating cavity and used for reducing corrosion of the metal phase change material contained in the accommodating cavity to the inner wall of the heat storage module 6. The opening of holding the chamber upwards is provided with apron 7 at the opening part of holding the chamber, and apron 7 and heat accumulation module 6 cooperation are closed the chamber completely to prevent that metal phase change material from flowing out in holding the chamber. A ventilation flow passage is reserved between adjacent heat storage modules 6. The metal phase change material for heat storage comprises aluminum, aluminum base, germanium base, magnesium base, zinc base and nickel base alloy, in the embodiment, silicon aluminum alloy is selected as the metal phase change material, and the heat storage module 6 is made of stainless steel. A plurality of heat conducting fins 8 are arranged on the outer side wall of the heat storage module 6 in an extending manner in a direction away from the heat storage module 6. In this embodiment, heat conduction fins 8 are provided on both sides of the heat storage module 6 in the length direction, the heat conduction fins 8 are horizontally provided, and four heat conduction fins 8 are provided on each side of the heat storage module 6 in the vertical direction from the bottom to the top. The heat conducting fins 8 on two adjacent heat storage modules 6 are arranged in a staggered mode, a plurality of heat conducting holes 9 are uniformly formed in each heat conducting fin 8, disturbance to ventilation air is further increased, and heat exchange efficiency is enhanced. The heating unit includes a plurality of heating fins 11 that the interval set up and runs through the heating rod 10 that heating fin 11 set up, and heating fin 11 and heating rod 10 set up perpendicularly for heating fin 11 can fully derive the heat on the heating rod 10, in heat storage subassembly, heating fin 11 respectively with upper and lower two-layer heat accumulation module 6 butt, realizes good heat conduction. The length direction of the heating rod 10 is arranged in the width direction of the heat storage unit. The both ends of heating rod 10 stretch out from heat accumulation unit both sides to the both ends and the external power source intercommunication of heating rod 10 of being convenient for make simultaneously that binding post between heating rod 10 and the power hide inside casing 1, guaranteed the power consumption safety of device.
Be equipped with a plurality of first wind channel 12 of intercrossing on the supporting component 5, a plurality of first wind channels 12 cut apart supporting component 5 into a plurality of supporting units, and the supporting unit upside alternately is provided with a plurality of second wind channels 13, and the degree of depth of second wind channel 13 is less than the degree of depth of first wind channel 12, and the width of second wind channel 13 is less than the degree of depth of first wind channel 12, and air intake 14 sets up towards supporting component 5. The ventilation flow path between the first air duct 12 and the thermal storage module 6 is aligned up and down. The first air channels 12 are provided with a plurality of mutually crossed first air channels 12 along the length direction and the width direction of the supporting component 5, and the first air channels 12 which are mutually perpendicular. By arranging the second air duct 13, low-temperature air can be blown into the bottom of the heat storage unit at the lowest layer, and the heat exchange capacity of the heat storage unit at the bottom layer is enhanced.
An air distribution plate 16 is arranged between the air inlet 14 and the heat storage component, and a plurality of through holes are uniformly formed in the air distribution plate 16. The fan blows low-temperature air into the shell 1 from the air inlet 14, the low-temperature air rises through the blocking of the air distribution plate 16, passes through holes of different heights, and then enters into ventilation channels of different heights, so that all the heat storage modules 6 close to one side of the air inlet 14 can exchange heat with the low-temperature air fully, the flow speed of the low-temperature air entering the air inlet 14 can be accelerated through the arrangement of the small air inlet 14, the impact force between the low-temperature air and the heat conducting fins 8 is increased, the disturbance to the low-temperature air is increased, and the heat exchange effect is enhanced.
The heat exchange assembly 17 is arranged on one side of the shell 1, which is provided with the air outlet 15, the heat exchange assembly 17 is arranged between the air outlet 15 and the heat storage assembly, the heat exchange assembly 17 is provided with a liquid inlet 19 and a liquid outlet 20, the liquid inlet 19 and the liquid outlet 20 penetrate through the shell 1 and extend out of the shell 1, the liquid inlet 19 is used for introducing heat exchange liquid, and the liquid outlet 20 is used for outputting the heat exchange liquid. In this embodiment, clear water is used as the heat exchange liquid. The heat exchange assembly 17 is a coil pipe structure extending along the height direction of the heat storage assembly, a heat absorption fin plate 18 is arranged on a pipeline of the heat exchange assembly 17, and the heat absorption fin plate 18 is perpendicular to the axis of the pipeline of the heat exchange assembly 17.
In the process of charging, heat generated by energizing the heating rod 10 is conducted to the shell of the heat storage module 6 containing the metal phase change material through the heating fins 11, and then is conducted into the metal phase change material through the shell of the heat storage module 6. During the heating process, the metal phase change material near the shell is melted first, and then the melted area is enlarged continuously, so that convection heat transfer is formed.
In the heat release process, the fan is started, low-temperature air is blown into the shell 1 from the air inlet 14 at the lower part of the right side of the shell 1, after passing through the air distribution plate 16, the low-temperature air is uniformly distributed in the height direction, then enters into ventilation channels between the heat storage modules 6 through the through holes and flows in the ventilation channels between the heat storage modules 6, and the channels are fully contacted with the heat conducting fins 8 at the outer side of the heat storage modules 6 and the surface of the heat storage modules 6 for heat exchange at the same time, and the heated air flows out from the air outlet 15 at the upper part of the left side of the shell 1. A heat exchange assembly 17 is arranged on one side close to the air outlet 15, and the heated air exchanges heat with the heat absorption fins on the surface of the heat exchange assembly 17 sufficiently to heat water in the pipeline of the heat exchange assembly 17 to form high-temperature water or steam. Therefore, the device can provide hot air and hot water or high-temperature high-pressure steam.
The heat storage component comprises heating units and heat storage units which are alternately arranged along the height direction, and is designed into a modularized structure, so that the heat storage component is convenient for mass production. The heat storage unit and the heating unit can be increased or decreased according to different design requirements, and the heat storage power scaling design is easy to realize. Meanwhile, the heat storage unit is formed by assembling a plurality of heat storage modules 6, if the individual heat storage modules 6 are severely corroded or leaked after long-time use, the heat storage modules 6 can be independently replaced, and compared with a storage tank type heat storage device, the maintenance cost of equipment and the system safety risk can be greatly reduced.
When the metal phase transformation heat storage and supply device provided by the embodiment is used in electricity consumption valley, the heating unit is electrified, the power supply converts electric energy into heat energy and stores the heat energy in the plurality of heat storage modules 6, when heat consumption is needed, air is introduced into the ventilation flow channel through air inlet 14 of the ventilation assembly, heat in the heat storage modules 6 is exchanged with the heat storage modules 6, heat in the heat storage modules 6 is taken out, and heated high-temperature air can be utilized by a user after flowing out from air outlet 15. During the electricity consumption peak period, air is introduced into the air inlet 14, or water is introduced into the liquid inlet 19 of the heat exchange assembly 17 while air is introduced, and the pre-stored heat energy can be utilized to carry out production and life, or the heated air is directly utilized to heat the water to generate high-temperature and high-pressure steam, so that the steam turbine is driven to generate electricity, and the electric energy is fed back to a power grid to realize peak clipping and valley filling of the electric power, thereby ensuring full and reasonable utilization of resources and stable operation of the power grid. And heat is stored in the electricity consumption valley, and power is generated in the electricity consumption peak, so that the bidirectional regulation of the power grid is realized. A plurality of metal phase transformation heat accumulation heating devices are combined to realize large energy storage, and when electricity is used in low-voltage mode, the device is utilized to convert low-cost electric energy into high-grade heat energy to be stored. During the power consumption peak period, the high-temperature gas output by the device is utilized to heat water to generate high-temperature and high-pressure steam, so that the steam turbine is driven to generate power, and the generated electric energy is fed back to the power grid, thereby realizing peak clipping and valley filling of the electric power, and ensuring full utilization of resources and stable operation of the power grid.
It can also be used for producing high-temperature and high-pressure steam for industrial processes such as drying or for building heat supply and hot water supply. Can also replace the traditional coal-fired heating furnace or natural gas wall-mounted furnace, the electricity from low ebb is used to store heat during night and then used for hot water supply and heating throughout the day. Compared with direct electric heating and electric water heater, the heat storage device can obviously reduce the heat consumption cost by utilizing peak-valley electric price difference.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (11)
1. A metal phase change heat storage and supply device, comprising:
the device comprises a shell (1), wherein a supporting component (5) is arranged at the bottom of the shell (1), and an air inlet (14) and an air outlet (15) are respectively arranged on two opposite sides of the shell (1);
the heat storage assembly is arranged in the shell (1), the heat storage assembly is arranged on the upper side of the supporting assembly (5), the heat storage assembly comprises heating units and heat storage units which are alternately arranged along the height direction, the heat storage units comprise a plurality of heat storage modules (6) which are arranged in an array, accommodating cavities are arranged in the heat storage modules (6) and are used for accommodating metal phase-change materials, ventilation flow channels are reserved among the heat storage modules (6), a plurality of first air channels (12) which are mutually intersected are arranged on the supporting assembly (5), the supporting assembly (5) is divided into a plurality of supporting units by the first air channels (12), a plurality of second air channels (13) are alternately arranged on the upper side surfaces of the supporting units, the depth of the second air channels (13) is smaller than that of the first air channels (12), and the air inlets (14) are arranged towards the supporting assembly (5). The air distribution plate (16), evenly be provided with a plurality of through-holes on air distribution plate (16), air distribution plate (16) are located air intake (14) with between the heat-retaining subassembly.
2. The metal phase transformation heat accumulation and supply device according to claim 1, further comprising a heat exchange component (17) arranged on one side of the air outlet (15) in the shell (1), wherein the heat exchange component (17) is arranged between the air outlet (15) and the heat accumulation component, a liquid inlet (19) and a liquid outlet (20) are arranged on the heat exchange component (17), the liquid inlet (19) and the liquid outlet (20) penetrate through the shell (1), the liquid inlet (19) is used for introducing heat exchange liquid, and the liquid outlet (20) is used for outputting the heat exchange liquid.
3. The metal phase transformation heat accumulation and supply device as in claim 2 wherein the heat exchange assembly (17) is a coil structure extending along the height direction of the heat accumulation assembly, a heat absorption fin plate (18) is arranged on a pipeline of the heat exchange assembly (17), and the heat absorption fin plate (18) is perpendicular to the axis of the pipeline of the heat exchange assembly (17).
4. A metal phase electric heat storage and supply device according to any one of claims 1 to 3, characterized in that a plurality of heat conducting fins (8) are provided on the outer side wall of the heat storage module (6) extending in a direction away from the heat storage module (6).
5. A metal phase change heat storage and supply device according to claim 4, characterized in that the heat conducting fins (8) between adjacent heat storage modules (6) are staggered.
6. The metal phase transformation heat storage and supply device according to claim 4, characterized in that the heat conducting fins (8) are provided with heat conducting holes (9).
7. The metal phase change heat storage and supply device according to claim 4, characterized in that the heating unit comprises a plurality of heating fins (11) arranged at intervals and a heating rod (10) arranged through the heating fins (11).
8. A metal phase change heat storage and supply device according to claim 5 or 6, characterized in that the heating unit comprises a plurality of heating fins (11) arranged at intervals and heating rods (10) arranged through the heating fins (11).
9. A metal phase change heat storage and supply device according to claim 7, characterized in that the heating fins (11) are mutually perpendicular to the heat conducting fins (8).
10. A metal phase change heat storage and supply device according to claim 8, characterized in that the heating fins (11) are mutually perpendicular to the heat conducting fins (8).
11. A metal phase electric heat storage and supply device according to any one of claims 1 to 3, characterized in that a base (3) is mounted at the bottom of the housing (1), and a heat insulation pad (4) is arranged between the base (3) and the housing (1).
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| JP2023136851A (en) * | 2022-03-17 | 2023-09-29 | 三菱重工業株式会社 | Heat storage type heat exchanger, heat storage type heat exchange system, power generation system, and method for operating heat storage type heat exchange system |
| CN115682079B (en) * | 2022-10-13 | 2024-04-19 | 河北工业大学 | Assembled phase-change heat-storage heating system |
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| JP2001304597A (en) * | 2000-04-20 | 2001-10-31 | Kinden Corp | Thermal storage type floor heating panel |
| CN1485593A (en) * | 2002-09-29 | 2004-03-31 | 王智慧 | Incorporated high density phase transformation energy accumulation power consumption heat supply process and apparatus |
| DE102016103008B4 (en) * | 2016-02-22 | 2019-10-10 | SMART-NRGY GmbH & Co. KG | Energy center and operating procedures |
| CN206875548U (en) * | 2017-07-07 | 2018-01-12 | 山东中信能源联合装备股份有限公司 | Combined type nano composite material thermal storage heating device |
| CN109708510A (en) * | 2019-01-13 | 2019-05-03 | 程孝龙 | A kind of energy-storage module and high-efficiency energy-storage heating plant |
| CN110220236A (en) * | 2019-07-03 | 2019-09-10 | 姜瑞彪 | Heating module and heating system |
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