CN111623535A - Seasonal energy storage system for black porcelain solar panel, construction method and energy storage method thereof - Google Patents
Seasonal energy storage system for black porcelain solar panel, construction method and energy storage method thereof Download PDFInfo
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- CN111623535A CN111623535A CN202010468522.XA CN202010468522A CN111623535A CN 111623535 A CN111623535 A CN 111623535A CN 202010468522 A CN202010468522 A CN 202010468522A CN 111623535 A CN111623535 A CN 111623535A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/70—Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/10—Details of absorbing elements characterised by the absorbing material
- F24S70/16—Details of absorbing elements characterised by the absorbing material made of ceramic; made of concrete; made of natural stone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
- F24S80/65—Thermal insulation characterised by the material
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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
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D20/0043—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material specially adapted for long-term heat storage; Underground tanks; Floating reservoirs; Pools; Ponds
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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
- F28D20/0052—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S2080/01—Selection of particular materials
- F24S2080/011—Ceramics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a black porcelain solar cross-season energy storage system, a construction method and an energy storage method thereof, wherein the black porcelain solar cross-season energy storage system comprises the following steps: the solar energy storage system comprises a black porcelain solar panel and a cross-season energy storage system, wherein an outlet of a fluid channel of the black porcelain solar panel is communicated with an inlet of the cross-season energy storage system, and an inlet of the fluid channel of the black porcelain solar panel is communicated with an outlet of the cross-season energy storage system; the sun-facing surface of the black porcelain solar panel is provided with a black porcelain coating, a fluid channel layer and a heat insulation layer are arranged in the solar panel body, the fluid channel layer comprises a plurality of fluid channels, and two ends of each fluid channel are open; the heat preservation layer is internally provided with at least one heat preservation cavity which is arranged around the back and two sides of the fluid channel and surrounds the fluid channel layer together with the sunny side of the black porcelain solar panel; and two ends of the heat preservation cavity are plugged.
Description
Technical Field
The invention relates to the technical field of solar heat storage, in particular to a seasonal energy storage system for a black porcelain solar panel, a construction method and an energy storage method thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The composite ceramic solar plate is a ceramic solar plate for short, takes porous vanadium-titanium black ceramic as a surface (sunlight trap) and common ceramic as a substrate thin-wall hollow plate, is internally provided with a glaze layer, and has the advantages of high strength, high temperature resistance, long service life and the like. The existing black ceramic composite ceramic solar panel is made by using common ceramic raw materials to prepare pug through conventional treatment, and is formed by vacuum slip casting through a gypsum mould, wherein four sides are generally closed, collecting channels are arranged at two longitudinal opposite sides, and porous through hole plates with water inlets and water outlets are arranged at opposite angles. Then mixing a ceramic black coloring agent with a common ceramic raw material to prepare slurry, covering the black slurry on the surface of a ceramic hollow plate biscuit, drying and sintering to obtain the black ceramic solar plate with the substrate being common ceramic and the surface being a black ceramic layer. Because each fluid channel of the solar panel is parallel to the panel body and is arranged in parallel, only one fluid inlet is provided, and the fluid has a certain speed in the circulating heating process, the uniform flow of the fluid through each channel of the black ceramic solar panel is difficult to realize, the flow velocity of the fluid in each channel is not completely the same, and the utilization rate of heat absorption of the black ceramic solar panel is reduced. In addition, in order to ensure the utilization rate of the absorbed heat of the black porcelain solar panel, the heat loss of the fluid flowing through the black porcelain solar panel needs to be reduced, namely, the black porcelain solar panel needs to be insulated. The traditional heat preservation mode is to set up the heat preservation at the back of black porcelain solar panel, but the life of heat preservation material is limited, can reduce the life of black porcelain solar panel.
The solar heat storage system can be divided into short-term energy storage and cross-season long-term energy storage according to different storage time, wherein the cross-season long-term energy storage is used for storing solar heat in summer for a long period in a cross-season mode and then supplying the solar heat to winter heating, so that the limitation that solar heat utilization is affected by seasonality is reduced. The inventor finds that although the solar cross-season heat storage technology is widely regarded for remarkable energy saving effect in recent years, heat loss is still a great problem faced by the solar cross-season energy storage technology, and the long-period cross-season heat storage performance of solar energy is seriously influenced by the heat loss. Furthermore, the energy storage system is generally arranged underground, and when the heat in the energy storage system is dissipated to the surrounding environment, the surrounding environment is adversely affected.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a black porcelain solar cross-season energy storage system, a construction method and an energy storage method thereof.
In order to achieve the above object, one or more embodiments of the present invention disclose the following technical solutions:
in a first aspect, the invention provides a seasonal energy storage system for a black ceramic solar panel, comprising: the solar energy storage system comprises a black porcelain solar panel and a cross-season energy storage system, wherein an outlet of a fluid channel of the black porcelain solar panel is communicated with an inlet of the cross-season energy storage system, and an inlet of the fluid channel of the black porcelain solar panel is communicated with an outlet of the cross-season energy storage system;
the sun-facing surface of the black porcelain solar panel is provided with a black porcelain coating, a fluid channel layer and a heat insulation layer are arranged in the solar panel body, the fluid channel layer comprises a plurality of fluid channels, and two ends of each fluid channel are open;
the heat preservation layer is internally provided with at least one heat preservation cavity which is arranged around the back and two sides of the fluid channel and surrounds the fluid channel layer together with the sunny side of the black porcelain solar panel;
and two ends of the heat preservation cavity are plugged.
In a second aspect, the invention provides an energy storage method of a cross-season energy storage system of a black porcelain solar panel, which comprises the following steps:
in the season of abundant solar energy, the sunny side of the black porcelain solar panel faces the sun, the black porcelain layer of the sunny side is used for absorbing the solar energy, and the solar energy is converted into heat energy;
the water is circularly pumped into the fluid channel of the black porcelain solar panel by using a pump, and the temperature of the black porcelain solar panel is increased after the circulating water absorbs the heat converted by the black porcelain solar panel;
the heated circulating water is sent to a cross-season energy storage system to exchange heat with a heat absorbing medium in the cross-season energy storage system, and heat is stored;
and pumping the cooled circulating water into the black porcelain solar panel again to absorb heat.
Compared with the prior art, one or more technical schemes of the invention have the following beneficial effects:
1. the black porcelain solar panel is combined with the cross-season energy storage system, so that the characteristics of high strength, long service life, high photo-thermal conversion efficiency and the like of the black porcelain solar panel can be fully exerted, and high-quality solar energy in summer is stored in a heat form. Due to the fact that the photo-thermal conversion efficiency of the black porcelain solar panel is high, circulating water can be heated to a high temperature, and then a medium in the cross-season energy storage system can be heated to the high temperature, and further more energy can be stored.
2. The back and the two sides of the black porcelain solar panel are provided with the heat preservation cavities, the two ends of each heat preservation cavity are plugged, the air heat preservation layers are formed in the heat preservation cavities, the two sides and the back of the fluid channel are effectively preserved heat, and the problems that when a heat preservation material layer is additionally arranged, the service life of the heat preservation material is short, the heat preservation layer and the black porcelain solar panel are difficult to combine and the like can be solved.
In addition, the heat-insulating layer is arranged on the body of the black porcelain solar panel, and the heat-insulating cavity and the fluid channel can be extruded and molded together, so that the processing cost of the black porcelain solar panel is reduced. Particularly, the black porcelain solar panel is small in thickness, and the heat preservation chambers on the side faces formed by co-extrusion can preserve heat of the fluid channels on the two sides, so that heat loss is effectively prevented.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a cross-sectional view of a black porcelain solar panel in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a black ceramic solar panel in another orientation according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2 at A;
FIG. 4 is a vertical cross-sectional view of an energy storage device for storing energy across seasons in an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an energy storage device for storing energy across seasons in accordance with an embodiment of the present invention;
fig. 6 is a schematic distribution structure diagram of heat exchange tubes in an energy storage device according to an embodiment of the invention.
The solar energy heat-preservation and heat-preservation combined type solar water heater comprises a solar panel body 1, a solar panel body 2, a fluid channel 3, a heat-preservation cavity 4, a plug 5, a flow-guiding pressurization section 6, an expanding decompression section 7, an inlet joint 8, a baffle 9, a reinforcing member 10, an outlet joint 11, a soil covering layer 12, a heat-preservation plate 13, a supporting layer 14, a heat-preservation layer 15, soil 16, an outer layer tank body 17, a middle layer tank body 18, an inner layer tank body 19 and a heat exchange tube.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In a first aspect, the invention provides a seasonal energy storage system for a black ceramic solar panel, comprising: the solar energy storage system comprises a black porcelain solar panel and a cross-season energy storage system, wherein an outlet of a fluid channel of the black porcelain solar panel is communicated with an inlet of the cross-season energy storage system, and an inlet of the fluid channel of the black porcelain solar panel is communicated with an outlet of the cross-season energy storage system;
the sun-facing surface of the black porcelain solar panel is provided with a black porcelain coating, a fluid channel layer and a heat insulation layer are arranged in the solar panel body, the fluid channel layer comprises a plurality of fluid channels, and two ends of each fluid channel are open;
the heat preservation layer is internally provided with at least one heat preservation cavity which is arranged around the back and two sides of the fluid channel and surrounds the fluid channel layer together with the sunny side of the black porcelain solar panel;
and two ends of the heat preservation cavity are plugged.
In some embodiments, a first seal head and a second seal head are respectively arranged at two ends of the black porcelain solar panel, the first seal head is provided with an inlet, and the second seal head is provided with an outlet;
the baffle is arranged in the first seal head, the baffle is arranged at the downstream of the inlet, and the baffle is vertical to the flowing direction of the fluid.
Circulating water enters the seal head at a certain speed under the action of the pump, if the circulating water is not optimized, the pressure distribution of the circulating water in the seal head is uneven, the flow rate of the circulating water in the fluid channel close to the inlet under the impact action of the water is large, the flow rate of the circulating water in the fluid channel at the edge is small, the absorption efficiency of the circulating water on heat converted by the black porcelain solar panel is further influenced, on one hand, the photo-thermal conversion efficiency of the black porcelain solar panel is reduced, on the other hand, the temperature of the sun-facing surface of the black porcelain solar panel is uneven, and the service life of the black porcelain solar panel is further influenced.
The downstream of the inlet of the first seal head is provided with a baffle which is vertical to the flowing direction of the fluid, and circulating water flowing into the first seal head from the inlet at a certain speed can flow to the two sides of the baffle under the blocking effect of the baffle, and then enters each fluid channel through being full of the seal head. The baffle can block the impact of rivers to a certain extent, and then at the average circulating water of a certain extent, improves the homogeneity that the circulating water distributes in fluid passage.
Furthermore, the inner side surface of the first seal head is provided with an expanding and decompressing section and a flow guiding and pressurizing section, one end of the expanding and decompressing section, which comprises a first inclined surface and a second inclined surface which are distributed on two sides of the inlet, is connected with the inlet, and the other end of the expanding and decompressing section inclines towards the outside; the joints of the first inclined surface and the second inclined surface with the inlet are in smooth transition;
the flow guide pressurizing section comprises a first cambered surface and a second cambered surface, and the first cambered surface and the second cambered surface are connected between the expanding and depressurizing section and the heat preservation chamber.
Tests show that if the inlet is directly cylindrical or the inlet is directly communicated with the space suddenly enlarged, the sprayed water flow exists in a water column form, and under the condition, the uniformity and the stability of the water pressure of the water flow in the end socket can be seriously influenced, so that the distribution uniformity of circulating water in a fluid channel is influenced.
When the inner side of the inlet is connected with the expanding section, the water flow can be stably expanded and decompressed due to the drainage dispersion effect of the expanding section, so that the condition that the water pressure inside the end socket is not uniformly distributed is relieved.
Due to the cooperation of the expanding and decompressing section and the baffle, circulating water can be distributed into each fluid channel after filling the seal head more gently.
Because the water flow far away from the inlet is small, the water pressure is small, the arc-shaped flow guide pressurizing section is arranged to limit the cross section area of the water flow channel, so that the water flow is pressurized, the water flow smoothly flows into the fluid channel at the edge, and the flowing speed in the fluid channel is ensured.
Furthermore, the distance between the inlet and the baffle is marked as A, the distance between the end part of the black porcelain solar panel body and the baffle is B, A: b is 1: 1-2.
Tests show that if the ratio of the two distances is too large, the baffle plate can have a certain blocking effect on the water flow flowing into the fluid channel, and if the ratio of the two distances is too small, the buffering effect of the water flow at the inlet can be influenced. The value A can be 5cm, 10cm, 15cm, 20cm, 25cm and the like, and is determined according to the size and the specific application environment of the black porcelain solar panel.
In some embodiments, the insulating chamber is filled with a foamed insulating material. The foaming heat-insulating material cooperates with the air, can improve the heat preservation effect of heat preservation cavity, even along with the extension of live time, foaming heat-insulating material became invalid, and the air bed in the heat preservation cavity still can gain better heat preservation effect.
The heat preservation chamber can be a single chamber or a plurality of chambers arranged in parallel.
In some embodiments, the black ceramic solar panel is arranged obliquely, and the outlet end is positioned above the inlet end.
Furthermore, a water storage tank is arranged on a connecting pipeline between the outlet of the cross-season energy storage device and the inlet of the black porcelain solar panel, and a pump is arranged at the outlet end of the water storage tank.
The black porcelain solar panel is obliquely arranged, the outlet end is positioned above, and the inlet end is positioned below, so that circulating water enters from the lower part and flows out from the upper part. Under the arrangement mode, the black porcelain solar panel can be ensured to be in a completely full state during working so as to ensure the working efficiency of the black porcelain solar panel. After summer, the pump can be stopped, water in the black porcelain solar panel can flow out from the inlet and directly flows into the water storage tank, water can be effectively prevented from being stored in the black porcelain solar panel, and the black porcelain solar panel is damaged due to freezing and expansion of the water in winter. The design of the diversion pressurizing section and the diameter expanding depressurizing section in the first seal head enables the inlet to be located at the lowest position, so that water in the black porcelain solar panel can be conveniently and completely discharged.
In some embodiments, the cross-season energy storage system comprises an energy storage cavity, an energy absorption medium filled in the energy storage cavity, and a heat exchange pipeline arranged in the energy storage cavity, wherein an inlet end of the heat exchange pipeline is communicated with an outlet of the black porcelain solar panel, and an outlet end of the heat exchange pipeline is communicated with an inlet of the black porcelain solar panel.
Furthermore, the energy storage cavity is concentric annular cavity, is formed by a plurality of concentric barrels in a separated mode, and each barrel comprises a supporting layer and a heat preservation layer, and the heat preservation layer is attached to the supporting layer.
Furthermore, the number of the annular chambers in the concentric annular chambers is 2-5.
Set up the energy storage chamber to concentric ring-type, at the energy storage in-process, outer energy storage chamber all can be for the heat preservation in inboard energy storage chamber, because the coefficient of heat conductivity of energy storage media such as soil is less, and outer soil has higher temperature under the heat preservation effect of heat preservation, so can have better energy storage effect to prevent the thermal loss of inlayer better.
Furthermore, the inlet end of the heat exchange pipeline is positioned in the outermost annular chamber, and the outlet end of the heat exchange pipeline is positioned in the innermost annular chamber.
Furthermore, the circulating water flows along the heat exchange pipeline for a circle along the outermost annular chamber, then enters the inner annular chamber for a circle, and finally enters the innermost annular chamber.
Still further, the heat exchange pipeline is a coiled pipe, and the coiled pipe is vertically arranged.
The heat exchange pipeline is a coiled pipe and is arranged along the circumferential direction of the annular cavity, so that the filled energy storage medium can be fully heated, and when heat is released, the heat can be fully released, and the full utilization of the stored heat is improved.
The vertical setting of coiled pipe can carry out the heat transfer on the whole direction of height of energy storage medium to improve thermal utilization ratio.
Circulating water flows through the outer periphery and then flows on the inner periphery in sequence, the temperature of the flowing area of the circulating water is increased in sequence, heat of a low-temperature area can be recovered better by utilizing the temperature difference, the circulating water can obtain higher temperature under the heating action of a high-temperature area, and the circulating water can be used better in the follow-up process.
Further, the heat exchange pipeline is provided with fins. The fins improve the heat exchange area and further improve the heat exchange efficiency.
Further, the number of the annular chambers is 3.
Further, the radial width of the innermost annular chamber is the largest and the radial width of the outermost annular chamber is the smallest. The volume of the energy storage medium in the innermost layer is maximized, and heat can be stored better.
In some embodiments, the concentric annular chambers are layered with the bottom of the outermost annular chamber being the lowest and the bottom of the innermost annular chamber being the highest.
When the energy storage medium is soil, the bottom layer of the concentric annular chambers can be arranged due to a certain supporting effect of the soil, so that the energy storage medium in the inner layer can be better insulated, and the heat loss of the inner layer can be reduced less.
Furthermore, a supporting device is arranged between the bottoms of the adjacent concentric annular chambers.
The supporting device can be a supporting column or a supporting pier and other structures, and energy storage media such as soil or water can be filled between the bottoms of the adjacent concentric annular chambers or the energy storage media can not be filled.
Furthermore, the support means are distributed at least in the peripheral and middle regions of the bottom of the annular chamber. And better support for the energy storage system.
In some embodiments, the concentric annular chambers are covered with insulation above.
Furthermore, the shell material of heat preservation is the steel, and steel shell structure skin cladding plastic layer.
Because the energy storage system is located underground and has a large volume, the top of the energy storage system needs to be covered with a soil layer, and the land above the energy storage system can be used for normal production activities or building buildings, the heat insulation layer needs to have certain strength to prevent the energy storage system from being crushed. The steel material has higher strength, and can have stronger compressive strength under the supporting action of an energy storage system, soil and the like, but the steel has good heat conductivity and is not corrosion-resistant. The periphery of the steel shell is coated with the plastic layer to improve the heat insulation performance of the steel shell, and meanwhile, the steel is isolated from water, so that corrosion is avoided.
Furthermore, a cavity is arranged in the shell, and a heat preservation medium is filled in the cavity. The heat preservation medium can be a foaming material and the like.
The heat preservation medium is positioned in the shell and is protected by the shell, so that the service life of the shell can be prolonged well.
In a similar way, the heat-insulating layer on the concentric cylinder body of the energy storage cavity is also of a structure that heat-insulating materials are filled in the shell. So as to better prolong the service life of the heat-insulating layer of the energy storage cavity.
Furthermore, a plurality of heat preservation cavities arranged in parallel are arranged in the shell of the heat preservation layer.
The shell of the heat-insulating layer is divided into a plurality of heat-insulating chambers, and the side wall of each heat-insulating chamber can support the heat-insulating layer to a certain extent, so that the overall rigidity of the heat-insulating layer is further improved, and deformation under the action of pressure is prevented.
In some embodiments, a filter is arranged on a connecting pipeline between the black porcelain solar panel and the cross-season energy storage system. The circulating water is filtered, so that the influence on heat exchange pipelines in the seasonal energy storage system is reduced as much as possible, and the service life of the heat exchange pipelines is prolonged.
In a second aspect, the invention provides an energy storage method of a cross-season energy storage system of a black porcelain solar panel, which comprises the following steps:
in the season of abundant solar energy, the sunny side of the black porcelain solar panel faces the sun, the black porcelain layer of the sunny side is used for absorbing the solar energy, and the solar energy is converted into heat energy;
the water is circularly pumped into the fluid channel of the black porcelain solar panel by using a pump, and the temperature of the black porcelain solar panel is increased after the circulating water absorbs the heat converted by the black porcelain solar panel;
the heated circulating water is sent to a cross-season energy storage system to exchange heat with a heat absorbing medium in the cross-season energy storage system, and heat is stored;
and pumping the cooled circulating water into the black porcelain solar panel again to absorb heat.
In some embodiments, the warmed circulating water first flows through the outermost peripheral chamber of the concentric annular chambers of the cross-season energy storage system, then flows through the middle chamber of the concentric annular chambers, finally flows through the innermost chamber, and then flows out of the cross-season energy storage system from the innermost chamber.
In some embodiments, a driving force is provided for the flow of the circulating water by the pump, when the energy storage is finished, the pump stops running, and the circulating water in the pipeline falls into the water storage tank under the action of self gravity to empty the black porcelain solar panel.
The black porcelain solar panel is prevented from being full of water and being frozen and cracked in winter.
In some embodiments, the method further comprises the step of filtering the circulating water to remove solid particles.
In a third aspect, a construction method of the cross-season energy storage system of the black porcelain solar panel is provided, which comprises the following steps:
when the energy storage medium is soil:
construction cross-season energy storage system:
digging a pit, and placing the outermost layer cylinder of the concentric annular chamber into the pit;
fixing heat exchange tubes along the circumferential direction of the outermost barrel, arranging the heat exchange tubes at the bottom of the outermost barrel, communicating the circumferential heat exchange tubes with the heat exchange tubes at the bottom, extending the tail ends of the heat exchange tubes at the bottom for a certain distance upwards, and filling soil with a certain thickness at the bottom of the outermost barrel;
arranging a through hole at the bottom of the middle layer cylinder, wherein the arranging position of the through hole corresponds to the tail end of the bottom heat exchange tube, hoisting the middle layer cylinder to the inner part of the outermost layer cylinder, and enabling the tail end of the bottom heat exchange tube to penetrate through the bottom through hole of the middle layer cylinder and extend into the middle layer cylinder;
arranging heat exchange tubes at the bottom and the periphery of the middle-layer cylinder to enable the tail ends of the peripheral heat exchange tubes, the bottom heat exchange tubes and the bottom heat exchange tubes of the outermost-layer cylinder to be communicated end to end, and burying soil at the bottom of the middle-layer cylinder;
finally, hoisting the innermost barrel to the inside of the middle barrel, forming a through hole in the side wall of the innermost barrel, extending the tail end of the circumferential heat exchange tube of the middle barrel into the innermost barrel through the through hole, and arranging the heat exchange tube in the innermost barrel;
and finally, filling soil into the middle of the two adjacent cylinders and the innermost cylinder.
In some embodiments, the supports are prefabricated at set locations before the bottom of the outermost and intermediate cylinders are filled with soil.
In some embodiments, after the concentric energy storage device is constructed, an insulating layer is covered above the concentric energy storage device, and a soil layer is covered above the insulating layer, so that the upper surface of the soil layer is flush with the surrounding environment.
Furthermore, the black porcelain solar panel is installed, so that the inlet of the black porcelain solar panel is positioned below, and the outlet of the black porcelain solar panel is positioned above.
Furthermore, an inlet of the black porcelain solar panel is connected with an outlet of the cross-season energy storage system, a water storage tank is arranged on the connecting pipeline, and an outlet end of the water storage tank is connected with a water pump;
the outlet of the black porcelain solar panel is connected with the inlet of the seasonal energy storage system.
In some embodiments, when the energy storage medium is water, the concentric cylinder and the heat exchange pipeline are installed according to the method, and then water is injected.
Example 1
As shown in fig. 1 and 2, the black porcelain solar panel seasonal energy storage system comprises: the solar energy storage system comprises a black porcelain solar panel and a cross-season energy storage system, wherein an outlet of a fluid channel of the black porcelain solar panel is communicated with an inlet of the cross-season energy storage system, and an inlet of the fluid channel of the black porcelain solar panel is communicated with an outlet of the cross-season energy storage system;
the sun-facing surface of the black porcelain solar panel is provided with a black porcelain coating, a fluid channel layer and a heat insulation layer are arranged in the solar panel body, the fluid channel layer comprises a plurality of fluid channels, and two ends of each fluid channel are open; the heat preservation layer is internally provided with at least one heat preservation cavity which is arranged around the back and two sides of the fluid channel and surrounds the fluid channel layer together with the sunny side of the black porcelain solar panel; the two ends of the heat preservation cavity are plugged, and the heat preservation cavity is filled with a foaming heat preservation material.
A first seal head and a second seal head are respectively arranged at two ends of the black porcelain solar panel, an inlet is formed in the first seal head, and an outlet is formed in the second seal head; the inside of first head is provided with the baffle, and the baffle sets up in the low reaches of import, and the baffle is perpendicular with the flow direction of fluid, and the distance between import and the baffle is marked as A, and the distance between this end of body of black porcelain solar panel and the baffle is B, A: b is 1: 1.5.
As shown in fig. 2, the inner side surface of the first end enclosure is provided with an expanding and decompressing section and a flow guiding and pressurizing section, one end of the first inclined surface and one end of the second inclined surface of the expanding and decompressing section, which are distributed on the two sides of the inlet, are both connected with the inlet, and the other end of the expanding and decompressing section inclines to the outside; the joints of the first inclined surface and the second inclined surface with the inlet are in smooth transition; the flow guide pressurizing section comprises a first cambered surface and a second cambered surface, and the first cambered surface and the second cambered surface are connected between the expanding and depressurizing section and the heat preservation chamber.
The black porcelain solar panel is obliquely arranged, the outlet end of the black porcelain solar panel is positioned above the inlet end, a water storage tank is arranged on a connecting pipeline between the outlet of the seasonal energy storage device and the inlet of the black porcelain solar panel, and a pump is arranged at the outlet end of the water storage tank.
The cross-season energy storage system comprises an energy storage cavity, energy absorption media filled in the energy storage cavity and a heat exchange pipeline arranged in the energy storage cavity, wherein the inlet end of the heat exchange pipeline is communicated with the outlet of the black porcelain solar panel, and the outlet end of the heat exchange pipeline is communicated with the inlet of the black porcelain solar panel. The energy storage cavity is a concentric annular cavity and is formed by separating a plurality of concentric cylinders, each cylinder comprises a supporting layer and a heat insulation layer, and the heat insulation layers are attached to the supporting layers. Of the concentric annular chambers, the number of annular chambers is 3.
As shown in fig. 5, the inlet end of the heat exchange pipeline is located in the outermost annular chamber, the outlet end of the heat exchange pipeline is located in the innermost annular chamber, and the circulating water flows along the flowing direction of the heat exchange pipeline for a circle along the outermost annular chamber, then flows into the inner annular chamber for a circle, and finally enters the innermost annular chamber. The heat exchange pipeline is a coiled pipe, the coiled pipe is vertically arranged, and fins are arranged on the heat exchange pipeline.
The bottom of the concentric annular chambers is arranged in a layered mode, the bottom of the outermost annular chamber is the lowest, the bottom of the innermost annular chamber is the highest, and a supporting device is arranged between the bottoms of the adjacent concentric annular chambers and is a supporting column.
The top of concentric ring-shaped cavity has covered the heat preservation, and the casing material of heat preservation is the steel, and the outer plastic layer that coats of steel shell structure, the inside heat preservation chamber that is provided with a plurality of and sets up side by side of casing of heat preservation, the heat preservation intracavity is filled there is the heat preservation medium.
And a filter is arranged on a connecting pipeline between the black porcelain solar panel and the cross-season energy storage system.
The construction method of the cross-season energy storage system of the black porcelain solar panel comprises the following steps:
when the energy storage medium is soil:
construction cross-season energy storage system:
digging a pit, and placing the outermost layer cylinder of the concentric annular chamber into the pit;
fixing heat exchange tubes along the circumferential direction of the outermost barrel, arranging the heat exchange tubes at the bottom of the outermost barrel, communicating the circumferential heat exchange tubes with the heat exchange tubes at the bottom, extending the tail ends of the heat exchange tubes at the bottom upwards for a certain distance, prefabricating supporting pieces at set positions at the bottom of the outermost barrel, and filling soil with a certain thickness at the bottom of the outermost barrel;
arranging a through hole at the bottom of the middle layer cylinder, wherein the arranging position of the through hole corresponds to the tail end of the bottom heat exchange tube, hoisting the middle layer cylinder to the inner part of the outermost layer cylinder, and enabling the tail end of the bottom heat exchange tube to penetrate through the bottom through hole of the middle layer cylinder and extend into the middle layer cylinder;
arranging heat exchange tubes at the bottom and the periphery of the middle-layer cylinder to enable the tail ends of the peripheral heat exchange tubes, the bottom heat exchange tubes and the bottom heat exchange tubes of the outermost-layer cylinder to be communicated end to end, prefabricating supporting pieces at set positions at the bottom of the middle-layer cylinder, and burying soil at the bottom of the middle-layer cylinder;
finally, hoisting the innermost barrel to the inside of the middle barrel, forming a through hole in the side wall of the innermost barrel, extending the tail end of the circumferential heat exchange tube of the middle barrel into the innermost barrel through the through hole, and arranging the heat exchange tube in the innermost barrel;
and finally, filling soil into the middle of the two adjacent cylinders and the innermost cylinder. After the construction of the energy storage device is completed, a heat insulation layer covers the energy storage device, and a soil layer covers the heat insulation layer, so that the upper surface of the soil layer is flush with the surrounding environment.
Mounting a black porcelain solar panel, wherein an inlet of the black porcelain solar panel is positioned below, an outlet of the black porcelain solar panel is positioned above, the inlet of the black porcelain solar panel is connected with an outlet of a cross-season energy storage system, a water storage tank is arranged on a connecting pipeline, and an outlet end of the water storage tank is connected with a water pump; the outlet of the black porcelain solar panel is connected with the inlet of the seasonal energy storage system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a season energy storage system is striden to black porcelain solar panel which characterized in that: the method comprises the following steps: the solar energy storage system comprises a black porcelain solar panel and a cross-season energy storage system, wherein an outlet of a fluid channel of the black porcelain solar panel is communicated with an inlet of the cross-season energy storage system, and an inlet of the fluid channel of the black porcelain solar panel is communicated with an outlet of the cross-season energy storage system;
the sun-facing surface of the black porcelain solar panel is provided with a black porcelain coating, a fluid channel layer and a heat insulation layer are arranged in the solar panel body, the fluid channel layer comprises a plurality of fluid channels, and two ends of each fluid channel are open;
the heat preservation layer is internally provided with at least one heat preservation cavity which is arranged around the back and two sides of the fluid channel and surrounds the fluid channel layer together with the sunny side of the black porcelain solar panel;
and two ends of the heat preservation cavity are plugged.
2. The cross-season energy storage system of the black porcelain solar panel according to claim 1, characterized in that: a first seal head and a second seal head are respectively arranged at two ends of the black porcelain solar panel, an inlet is formed in the first seal head, and an outlet is formed in the second seal head;
a baffle is arranged in the first seal head, the baffle is arranged at the downstream of the inlet, and the baffle is vertical to the flowing direction of the fluid;
furthermore, the inner side surface of the first seal head is provided with an expanding and decompressing section and a flow guiding and pressurizing section, one end of the expanding and decompressing section, which comprises a first inclined surface and a second inclined surface which are distributed on two sides of the inlet, is connected with the inlet, and the other end of the expanding and decompressing section inclines towards the outside; the joints of the first inclined surface and the second inclined surface with the inlet are in smooth transition;
the diversion pressurizing section comprises a first cambered surface and a second cambered surface, and the first cambered surface and the second cambered surface are connected between the expanding and depressurizing section and the heat-insulating chamber;
furthermore, the distance between the inlet and the baffle is marked as A, the distance between the end part of the black porcelain solar panel body and the baffle is B, A: b is 1: 1-2.
3. The cross-season energy storage system of the black porcelain solar panel according to claim 1, characterized in that: the heat-insulating cavity is filled with a foaming heat-insulating material;
or the black porcelain solar panel is obliquely arranged, and the outlet end is positioned above the inlet end;
furthermore, a water storage tank is arranged on a connecting pipeline between the outlet of the cross-season energy storage device and the inlet of the black porcelain solar panel, and a pump is arranged at the outlet end of the water storage tank.
4. The cross-season energy storage system of the black porcelain solar panel according to claim 1, characterized in that: the cross-season energy storage system comprises an energy storage cavity, energy absorption media filled in the energy storage cavity and a heat exchange pipeline arranged in the energy storage cavity, wherein the inlet end of the heat exchange pipeline is communicated with the outlet of the black porcelain solar panel, and the outlet end of the heat exchange pipeline is communicated with the inlet of the black porcelain solar panel;
furthermore, the energy storage cavity is a concentric annular cavity and is formed by separating a plurality of concentric cylinders, each cylinder comprises a supporting layer and a heat insulation layer, and the heat insulation layer is attached to the supporting layer;
furthermore, the number of the annular chambers in the concentric annular chambers is 2-5;
furthermore, the inlet end of the heat exchange pipeline is positioned in the outermost annular chamber, and the outlet end of the heat exchange pipeline is positioned in the innermost annular chamber;
furthermore, the circulating water flows for a circle along the outermost annular chamber, then enters the inner annular chamber for a circle and finally enters the innermost annular chamber along the flow direction of the heat exchange pipeline;
furthermore, the heat exchange pipeline is a coiled pipe, and the coiled pipe is vertically arranged;
further, fins are arranged on the heat exchange pipeline;
further, the number of the annular chambers is 3;
further, the radial width of the innermost annular chamber is the largest and the radial width of the outermost annular chamber is the smallest.
5. The cross-season energy storage system of the black porcelain solar panel according to claim 1, characterized in that: the bottom of the concentric annular chambers is arranged in a layered mode, the bottom of the annular chamber at the outermost layer is the lowest, and the bottom of the annular chamber at the innermost layer is the highest;
furthermore, a supporting device is arranged between the bottoms of the adjacent concentric annular chambers;
furthermore, the supporting device is at least distributed in the peripheral and middle areas of the bottom of the annular chamber;
or the upper part of the concentric annular chamber is covered with a heat-insulating layer;
furthermore, the shell of the heat-insulating layer is made of steel, and the outer layer of the steel shell structure is coated with a plastic layer;
furthermore, a cavity is arranged in the shell, and a heat preservation medium is filled in the cavity;
furthermore, a plurality of heat preservation cavities arranged in parallel are arranged in the shell of the heat preservation layer;
or a filter is arranged on a connecting pipeline between the black porcelain solar panel and the cross-season energy storage system.
6. The energy storage method of the black porcelain solar panel cross-season energy storage system of any one of claims 1 to 5, characterized in that: the method comprises the following steps:
in the season of abundant solar energy, the sunny side of the black porcelain solar panel faces the sun, the black porcelain layer of the sunny side is used for absorbing the solar energy, and the solar energy is converted into heat energy;
the water is circularly pumped into the fluid channel of the black porcelain solar panel by using a pump, and the temperature of the black porcelain solar panel is increased after the circulating water absorbs the heat converted by the black porcelain solar panel;
the heated circulating water is sent to a cross-season energy storage system to exchange heat with a heat absorbing medium in the cross-season energy storage system, and heat is stored;
and pumping the cooled circulating water into the black porcelain solar panel again to absorb heat.
7. The energy storage method according to claim 6, characterized in that: circulating water after temperature rise firstly flows through the outermost peripheral chamber of the concentric annular chambers of the cross-season energy storage system, then flows through the middle layer chamber of the concentric annular chambers, finally flows through the innermost chamber, and then flows out of the cross-season energy storage system from the innermost chamber;
or the pump provides driving force for the flow of the circulating water, when the energy storage is finished, the pump stops running, the circulating water in the pipeline falls into the water storage tank under the action of self gravity, and the black porcelain solar panel is emptied;
or, the method also comprises the step of filtering the circulating water to remove solid particles.
8. The construction method of the cross-season energy storage system of the black porcelain solar panel of any one of claims 1 to 5, characterized in that: the method comprises the following steps:
when the energy storage medium is soil:
construction cross-season energy storage system:
digging a pit, and placing the outermost layer cylinder of the concentric annular chamber into the pit;
fixing heat exchange tubes along the circumferential direction of the outermost barrel, arranging the heat exchange tubes at the bottom of the outermost barrel, communicating the circumferential heat exchange tubes with the heat exchange tubes at the bottom, extending the tail ends of the heat exchange tubes at the bottom for a certain distance upwards, and filling soil with a certain thickness at the bottom of the outermost barrel;
arranging a through hole at the bottom of the middle layer cylinder, wherein the arranging position of the through hole corresponds to the tail end of the bottom heat exchange tube, hoisting the middle layer cylinder to the inner part of the outermost layer cylinder, and enabling the tail end of the bottom heat exchange tube to penetrate through the bottom through hole of the middle layer cylinder and extend into the middle layer cylinder;
arranging heat exchange tubes at the bottom and the periphery of the middle-layer cylinder to enable the tail ends of the peripheral heat exchange tubes, the bottom heat exchange tubes and the bottom heat exchange tubes of the outermost-layer cylinder to be communicated end to end, and burying soil at the bottom of the middle-layer cylinder;
finally, hoisting the innermost barrel to the inside of the middle barrel, forming a through hole in the side wall of the innermost barrel, extending the tail end of the circumferential heat exchange tube of the middle barrel into the innermost barrel through the through hole, and arranging the heat exchange tube in the innermost barrel;
and finally, filling soil into the middle of the two adjacent cylinders and the innermost cylinder.
9. The construction method according to claim 8, wherein: prefabricating supporting pieces at set positions before filling soil at the bottoms of the outermost layer cylinder body and the middle layer cylinder body;
or after the concentric energy storage device is constructed, covering a heat insulation layer above the concentric energy storage device, and covering a soil layer above the heat insulation layer to enable the upper surface of the soil layer to be flush with the surrounding environment;
further, a black porcelain solar panel is installed, so that an inlet of the black porcelain solar panel is positioned below, and an outlet of the black porcelain solar panel is positioned above;
furthermore, an inlet of the black porcelain solar panel is connected with an outlet of the cross-season energy storage system, a water storage tank is arranged on the connecting pipeline, and an outlet end of the water storage tank is connected with a water pump;
the outlet of the black porcelain solar panel is connected with the inlet of the seasonal energy storage system.
10. The construction method according to claim 8, wherein: when the energy storage medium is water, the concentric cylinder and the heat exchange pipeline are installed according to the method, and then water is injected.
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