CN109708505A - A kind of composite solid heat storage - Google Patents
A kind of composite solid heat storage Download PDFInfo
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- CN109708505A CN109708505A CN201811602719.7A CN201811602719A CN109708505A CN 109708505 A CN109708505 A CN 109708505A CN 201811602719 A CN201811602719 A CN 201811602719A CN 109708505 A CN109708505 A CN 109708505A
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- heat storage
- interconnection
- vertical passage
- nonmetallic
- composite solid
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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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Abstract
The present invention relates to power energy storage technical field more particularly to a kind of composite solid heat storages.The composite solid heat storage includes nonmetallic heat storage, metal heat storage and resistive heater, a plurality of vertical passage and a plurality of interconnection are equipped with inside nonmetallic heat storage, vertical passage and interconnection square crossing arrangement, and it is not connected, resistive heater is placed in vertical passage, metal heat storage is placed in interconnection, electric current generates heat by resistive heater in heating process, and nonmetallic heat storage is passed to by thermal convection and thermally conductive mode, and by thermally conductive mode, metal heat storage is passed to by nonmetallic heat storage.In the present invention, main structure of the nonmetallic materials as heat storage, with good heat storage capacity, and metal material compares nonmetallic materials with higher thermal coefficient, thermal conduction rate is fast, be conducive to entire solid heat storage temperature to be uniformly distributed, improve the heat storage capacity of entire solid heat storage body.
Description
Technical field
The present invention relates to power energy storage technical field more particularly to a kind of composite solid heat storages.
Background technique
In recent years, with the raising of Industry Structure variation and living standards of the people, daytime, Peak power use amount constantly increased
Add, night dip period electricity consumption is greatly reduced, and power supply peak-valley difference increases year by year, finds effective peak regulation method, develops
New peak load regulation network technology is imperative, and in this context, electric energy accumulating technique is suggested, and wherein thermal energy storage technology is many
It is most widely used in more energy accumulating techniques, most easily realize, thermal energy storage technology is mainly used for solving thermal energy supply and demand mismatch
Contradiction is the important technology for improving energy utilization rate and protecting environment, while in Solar use, wind energy utilization, electric system
" peak load shifting ", waste heat and waste heat the fields such as recycling, industry and civil buildings heating be with a wide range of applications,
Worldwide research hotspot is had become in recent years.
Thermal energy storage mainly includes sensible heat storage, latent heat storage and chemical storage three classes basic mode.Wherein, heat-storing material
Endothermic temperature increases and the accumulation of heat without phase-state change is stored sensible heat, is chiefly used in the accumulation of heat of heating, air-conditioning and hot water supply system
(cold), according to the difference of heat storage medium, sensible heat storage can be divided into solid heat storage and 2 kinds of liquid heat storage, wherein in liquid heat storage
Heat storage medium is mostly water, and by water by being stored in water pot after electric heating, the heating temperature that normal pressure is lauched is limited, temperature mistake
Height can generate a large amount of vapor, so general water temperature can be controlled at 85 DEG C or so, for the reserves for increasing thermal energy, and water pot often volume
It is huge, liquid heat storage is compared, the heat storage in solid heat storage technology is solid material, and volumetric heat capacity amount is generally relatively high, be can be changed
The temperature amplitude of change is also very big, although the specific heat of general solid material only has the 1/3-1/4 of water, due to solid heat storage body
Density is 2.5 times or so of water, and for regenerator temperature up to 800-1000 DEG C or more, heat storage capacity is bigger than the heat storage capacity of androgynous ponding
5 times or so, so that the volume of energy-accumulating solid device greatly reduces, and solid heat storage energy storage device is not subject to pressure, to its shape
There is no particular/special requirement, the occupied area of device and equipment investment substantially reduce, and solid heat storage not only overcomes traditional heat storage type
The shortcomings that, and have both the multinomial advantage such as environmental protection, efficient, energy conservation, safety.
Solid electric heat storage boiler is that one kind converts electrical energy into thermal energy storage, for for user heating or as other thermal energy
The equipment of application, structure is simple, and the thermal efficiency can reach 95%-98%, and the course of work includes heating process and exothermic process,
Electric current generates heat by the resistance wire in heating tube in heating process, and passes to accumulation of heat by thermal convection and thermally conductive mode
Body increases the internal surface temperature of heat storage, and by thermally conductive mode, is transmitted, made by the inner surface exterior surface of heat storage
The temperature of heat storage gradually rises, and after accumulation of heat 8h, regenerator temperature reaches 800-1000 DEG C, opens blower, carries out wind system
Circulation starts user to provide heat, wherein solid heat storage body medium is divided into metal material and nonmetallic materials, Patent No.
The patent document of CN207050540U just discloses a kind of accumulation of heat magnesia brick suitable for solid electric heat storage technology, passes through in file and sets
The heat exchange that ventilation opening improves air and magnesia brick is set, but does not improve the heat storage capacity of single heat storage, heat storage capacity really
It is to carry out heat storage by the temperature change of heat storage, exothermic process is unable to constant temperature, and thermal storage density is small, and accumulation of heat is caused to set
Standby is bulky, and heat storage efficiency is not high, and heat storage can also cause thermal loss there are the temperature difference because of with ambient enviroment,
Heat can not long term storage, be not suitable for for a long time, large capacity accumulation of heat.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, metal material is mutually tied with nonmetallic materials the present invention provides a kind of
The composite solid heat storage of conjunction, further improves the heat storage capacity of solid electric heat-storage device.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include:
A kind of composite solid heat storage, including nonmetallic heat storage and metal heat storage are set inside nonmetallic heat storage
There are a plurality of vertical passage and a plurality of interconnection, vertical passage and interconnection square crossing arrangement, and not connected.
According to the present invention, nonmetallic heat storage material is magnesia, and metal heat storage material is cast iron.
According to the present invention, vertical passage is arranged as 2*6 array, and adjacent two rows vertical passage is arranged in parallel, phase in same row
Adjacent vertical passage parallel arrangement.
According to the present invention, interconnection is arranged as 3*3 array, and adjacent two rows interconnection is arranged in parallel, phase in same row
Adjacent interconnection parallel arrangement.
According to the present invention, the center line of the vertical passage of arbitrary neighborhood two rows is equidistant, any two phases in same row
The center line of adjacent vertical passage is equidistant.
According to the present invention, the center line of the interconnection of arbitrary neighborhood two rows is equidistant, any two phases in same row
The center line of adjacent interconnection is equidistant.
According to the present invention, the cross section of vertical passage and interconnection is round or polygon.
According to the present invention, which further includes resistive heater, and resistive heater is placed in vertical passage.
According to the present invention, metal heat storage is placed in interconnection, and metal heat storage is directly poured into interconnection.
According to the present invention, metal heat storage is placed in interconnection, after metal heat storage pouring molding with interconnection
It is threadedly coupled.
(3) beneficial effect
The beneficial effects of the present invention are:
Composite solid heat storage proposed by the present invention, while metal material and nonmetallic materials are used, wherein non-gold
Belong to main structure of the material as the solid heat storage body, there is good heat storage capacity, and metal material compares non-metallic material
Material has higher thermal coefficient, and thermal conduction rate is fast, is conducive to entire solid heat storage temperature and is uniformly distributed, and improves entire
The heat storage capacity of solid heat storage body.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is the partial cutaway view of Fig. 1；
Fig. 3 is the main view of Fig. 1；
Fig. 4 is the side view of Fig. 1.
[description of symbols]
1: nonmetallic heat storage；
2: metal heat storage；
3: resistive heater；
4: vertical passage；
5: interconnection.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
It is bright to be described in detail.
In order to improve the heat storage capacity of single heat storage, the present invention is using metal material heat storage and nonmetallic materials accumulation of heat
The mode that both bodies combine has put forward a kind of composite solid heat storage that can be applicable in solid electric heat-storage device, should
Compound heat storage includes nonmetallic heat storage and metal heat storage, in the material selection of heat storage, as shown in table 1, right
After the conditions such as the specific heat capacity and density of multiple material compare, the cast iron of said metal material, volumetric heat capacity amount is maximum, and
In nonmetallic materials, aluminium oxide and magnesia all have higher thermal capacity, but are measured from thermal conductivity and expense angle, oxidation
Magnesium material is better choice, is a kind of good nonmetallic heat storage medium, and magnesia is a kind of insulating materials, security performance
Relatively reliable, for the present invention on the basis of considering material cost, selective oxidation magnesium is as nonmetallic accumulation of heat main body, and cast iron is as gold
Belong to accumulation of heat main body.
The comparison of each material conducts heat ability of table 1
Embodiment 1
As shown in Figure 1, the nonmetallic heat storage 1 of the compound heat storage be rectangular parallelepiped structure, structure length 130mm,
Width is 70mm, is highly 90mm, and in the present embodiment 1, which is magnesia, in nonmetallic heat storage 1
Equipped with a plurality of vertical passage 4 and a plurality of interconnection 5, the cross section of vertical passage 4 and interconnection 5 can be round or polygon
Shape, the cross section of vertical passage 4 and interconnection 5 is circle in the present embodiment 1, and the diameter of the circular cross section is 10mm；
Vertical passage 4 and 5 square crossing of interconnection arrangement, and it is not connected, as shown in Fig. 2, vertical passage 4 is arranged in
Between adjacent two rows interconnection 5；
In the present embodiment 1, vertical passage 4 is arranged as 2*6 array, and adjacent two rows vertical passage 4 is arranged in parallel, in same row
Adjacent vertical passage 4 is arranged in parallel, wherein the center line of the vertical passage 4 of arbitrary neighborhood two rows is equidistant, the present embodiment 1
In, center line distance is 30mm, and the center line of any two adjacent vertical passages 4 is equidistant in same row, this implementation
In example 1, center line distance is 20mm, as shown in Figure 3；
In the present embodiment 1, interconnection 5 is arranged as 3*3 array, and adjacent two rows interconnection 5 is arranged in parallel, in same row
Adjacent transverse channel 5 is arranged in parallel, wherein the center line of the interconnection 5 of arbitrary neighborhood two rows is equidistant, the present embodiment 1
In, center line distance is 30mm, and the center line of any two adjacent interconnections 5 is equidistant in same row, this implementation
In example 1, center line distance is 20mm, as shown in Figure 4；
In order to guarantee heat storage integral strength, adjacent two passes outer rim spacing in the same direction is greater than or equal to 10mm, herein
In the same direction can be all transverse direction or be all longitudinal direction；The vertical passage 4 of adjacent two rows and 5 outer rim antarafacial vertical range of interconnection are big
In or equal to 5mm；
The compound heat storage further includes having multiple resistive heaters 3, and resistive heater 3 is placed in vertical passage 4, adds
Electric current generates heat by resistive heater 3 in thermal process, and passes to solid heat storage body by thermal convection and thermally conductive mode
Nonmetallic heat storage 1, increase nonmetallic 1 internal surface temperature of heat storage, and by thermally conductive mode, by nonmetallic heat storage
1 inner surface exterior surface transmitting, gradually rises the temperature of heat storage, therefore the still nonmetallic accumulation of heat simultaneously of vertical passage 4
Body 1 and gas carry out the channel of heat exchange；
The high metal heat storage 2 of placement body volumetric heat capacity in interconnection 5, metal heat storage 2 is casting in the present embodiment 1
Iron, cast iron are directly poured into each interconnection 5 in nonmetallic heat storage 1.
Embodiment 2
The difference of embodiment 2 and embodiment 1 is only that the company of cast iron and nonmetallic heat storage 1 as metal heat storage 2
Mode is connect, in example 2, cast iron is cast molding as metal heat storage 2 first, the mode being then connected through a screw thread,
It is placed in each interconnection 5 in nonmetallic heat storage 1, which both can prevent metal heat storage 2 in transverse direction
It is loosened in channel 5, the contact area between nonmetallic heat storage 1 and metal heat storage 2 can also be increased, be more conducive to metal
2 accumulation of heat of heat storage, other than the connection type of the nonmetallic heat storage 1 of metal heat storage more than 2, other conditions with embodiment 1
Unanimously.
Compound heat storage proposed by the present invention, using metal material in such a way that nonmetallic materials combine, wherein
Metal heat storage has higher thermal coefficient compared to more nonmetallic heat storage, and thermal conduction rate is fast, is conducive to entire heat storage
Temperature is uniformly distributed, meanwhile, the volumetric heat capacity amount of metal heat storage is high, improves the heat storage capacity of entire heat storage.
It is to be appreciated that describing the skill simply to illustrate that of the invention to what specific embodiments of the present invention carried out above
Art route and feature, its object is to allow those skilled in the art to can understand the content of the present invention and implement it accordingly, but
The present invention is not limited to above-mentioned particular implementations.All various changes made within the scope of the claims are repaired
Decorations, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of composite solid heat storage, it is characterised in that:
The heat storage includes nonmetallic heat storage (1) and metal heat storage (2), is equipped with inside nonmetallic heat storage (1) a plurality of vertical
To channel (4) and a plurality of interconnection (5), the vertical passage (4) and the interconnection (5) square crossing arrangement, and mutually
It is not communicated with.
2. composite solid heat storage according to claim 1, it is characterised in that:
Nonmetallic heat storage (1) material is magnesia, and metal heat storage (2) material is cast iron.
3. composite solid heat storage according to claim 1, it is characterised in that:
The vertical passage (4) is arranged as 2*6 array, and the adjacent two rows vertical passage (4) is arranged in parallel, adjacent in same row
Vertical passage (4) parallel arrangement.
4. composite solid heat storage according to claim 1, it is characterised in that:
The interconnection (5) is arranged as 3*3 array, and the adjacent two rows interconnection (5) is arranged in parallel, adjacent in same row
Interconnection (5) parallel arrangement.
5. composite solid heat storage according to claim 2, it is characterised in that:
The center line of the vertical passage (4) of arbitrary neighborhood two rows is equidistant, in same row any two it is adjacent described
The center line of vertical passage (4) is equidistant.
6. composite solid heat storage according to claim 3, it is characterised in that:
The center line of the interconnection (5) of arbitrary neighborhood two rows is equidistant, in same row any two it is adjacent described
The center line of interconnection (5) is equidistant.
7. composite solid heat storage according to claim 1, it is characterised in that:
The cross section of the vertical passage (4) and the interconnection (5) is round or polygon.
8. composite solid heat storage according to claim 1, it is characterised in that:
The solid heat storage body further includes resistive heater (3), and the resistive heater (3) is placed in the vertical passage (4).
9. composite solid heat storage according to claim 1, it is characterised in that:
The metal heat storage (2) is placed in the interconnection (5), and the metal heat storage (2) is directly poured into described
In interconnection (5).
10. composite solid heat storage according to claim 1, it is characterised in that:
The metal heat storage (2) is placed in the interconnection (5), after metal heat storage (2) pouring molding with institute
State interconnection (5) threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602719.7A CN109708505A (en) | 2018-12-26 | 2018-12-26 | A kind of composite solid heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602719.7A CN109708505A (en) | 2018-12-26 | 2018-12-26 | A kind of composite solid heat storage |
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| Publication Number | Publication Date |
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| CN109708505A true CN109708505A (en) | 2019-05-03 |
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ID=66258473
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811602719.7A Pending CN109708505A (en) | 2018-12-26 | 2018-12-26 | A kind of composite solid heat storage |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536818A (en) * | 2019-12-23 | 2020-08-14 | 青岛建设集团有限公司 | Heat storage heat exchanger and fresh air system for controlling PM25 |
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| CN201314803Y (en) * | 2008-11-21 | 2009-09-23 | 沈阳世杰电器有限公司 | Solid thermal energy storage device |
| CN103940277A (en) * | 2014-05-05 | 2014-07-23 | 山东省能源与环境研究院 | Tube-bundle-free split type solid heat storage heat exchanger |
| CN103954159A (en) * | 2014-05-05 | 2014-07-30 | 山东省能源与环境研究院 | Solid heat accumulating type heat exchanger for pipeless waste heat utilization |
| CN104713397A (en) * | 2013-12-16 | 2015-06-17 | 北京兆阳光热技术有限公司 | Solid heat storage system |
| CN105115338A (en) * | 2015-08-31 | 2015-12-02 | 东南大学 | Phase change heat storage device |
| CN205209309U (en) * | 2015-12-17 | 2016-05-04 | 洛阳沃达机械技术开发有限公司 | Heat accumulator |
| CN207850146U (en) * | 2017-12-21 | 2018-09-11 | 青岛泽瑞节能设备有限公司 | Electrical heating type solid heat storage brick and heat storage |
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2018
- 2018-12-26 CN CN201811602719.7A patent/CN109708505A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201314803Y (en) * | 2008-11-21 | 2009-09-23 | 沈阳世杰电器有限公司 | Solid thermal energy storage device |
| CN104713397A (en) * | 2013-12-16 | 2015-06-17 | 北京兆阳光热技术有限公司 | Solid heat storage system |
| CN103940277A (en) * | 2014-05-05 | 2014-07-23 | 山东省能源与环境研究院 | Tube-bundle-free split type solid heat storage heat exchanger |
| CN103954159A (en) * | 2014-05-05 | 2014-07-30 | 山东省能源与环境研究院 | Solid heat accumulating type heat exchanger for pipeless waste heat utilization |
| CN105115338A (en) * | 2015-08-31 | 2015-12-02 | 东南大学 | Phase change heat storage device |
| CN205209309U (en) * | 2015-12-17 | 2016-05-04 | 洛阳沃达机械技术开发有限公司 | Heat accumulator |
| CN207850146U (en) * | 2017-12-21 | 2018-09-11 | 青岛泽瑞节能设备有限公司 | Electrical heating type solid heat storage brick and heat storage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536818A (en) * | 2019-12-23 | 2020-08-14 | 青岛建设集团有限公司 | Heat storage heat exchanger and fresh air system for controlling PM25 |
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Application publication date: 20190503 |