CN115341680A - Phase-change heat-storage temperature-regulating anti-cracking wall - Google Patents
Phase-change heat-storage temperature-regulating anti-cracking wall Download PDFInfo
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- CN115341680A CN115341680A CN202110514028.7A CN202110514028A CN115341680A CN 115341680 A CN115341680 A CN 115341680A CN 202110514028 A CN202110514028 A CN 202110514028A CN 115341680 A CN115341680 A CN 115341680A
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- phase change
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- heat storage
- storage temperature
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- 238000005336 cracking Methods 0.000 title claims abstract description 33
- 238000005338 heat storage Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 39
- 239000012782 phase change material Substances 0.000 claims abstract description 32
- 230000008859 change Effects 0.000 claims abstract description 31
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 22
- 239000011241 protective layer Substances 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 229910002804 graphite Inorganic materials 0.000 claims description 21
- 239000010439 graphite Substances 0.000 claims description 21
- 239000012188 paraffin wax Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 229940057995 liquid paraffin Drugs 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011464 hollow brick Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0071—Phase-change materials, e.g. latent heat storage materials used in concrete compositions
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Acoustics & Sound (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a phase change heat storage temperature-regulating anti-cracking wall body. The method comprises the following steps: the composite phase-change anti-crack protective layer is uniformly coated on the thermal insulation layer, and comprises 90% -95% of anti-crack mortar and 5% -10% of composite phase-change materials. The invention increases the heat storage and temperature regulation capacity of the existing wall body, when the environmental temperature is higher, the indoor heat is absorbed by the composite phase change material in the wall body anti-cracking protective layer, and when the environmental temperature is reduced, the heat absorbed by the composite phase change material in the wall body anti-cracking protective layer is transferred to the environment. The invention combines the wall heat preservation and phase change heat storage technologies, realizes the purposes of recycling the waste heat of the room and efficiently utilizing the energy.
Description
Technical Field
The invention relates to a wall material, in particular to a phase change heat storage temperature-regulating anti-cracking wall, and belongs to the field of building materials.
Background
With the rapid development of the economy of China, the living standard of people is continuously improved, the living conditions are improved, meanwhile, the building energy consumption is rapidly increased, the proportion of the building energy consumption in the total energy consumption of the society of China is more than 1/3, and the proportion of the energy consumption caused by the heat transfer of the wall body in the total energy consumption of the building can reach 70%. Therefore, wall energy conservation becomes one of the main directions of building energy conservation, and the phase change energy storage technology is an effective means of building energy conservation. In recent years, the application of the heat storage of the composite phase change material is concerned, because the composite phase change material has the advantages of large heat storage density, small heat storage container volume, high heat efficiency and the like, has wide application prospects in the fields of solar energy utilization, industrial waste heat, waste heat recovery, building energy conservation and the like, particularly is a hot composite Phase Change Material (PCM) which has become a research at home and abroad in the fields of building air and heating, solar energy utilization and the like, is a latent heat storage material, and has the advantages of large heat storage per unit volume, approximate isothermal heat storage process, stable chemical properties and the like.
Through retrieval, the patent application with the application number of 201510649318.7 discloses a cement composite shape-stabilized phase-change material mortar, the shape-stabilized phase-change material prepared by the mortar has high paraffin substance content, the preparation needs to be compressed and qualitative and then crushed into powder, the process is complex, the shape-stabilized phase-change material content in the mortar is higher, the mortar is different from the preparation process of the invention, and the cost of the invention is lower than that of the prior art.
Disclosure of Invention
Aiming at the problems, the invention discloses a phase change heat storage and temperature regulation wall body.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a phase change heat storage temperature adjustment anti-cracking wall body comprises: basic unit wall body, heat preservation and compound phase transition anti-crack inoxidizing coating, the heat preservation be located between compound phase transition anti-crack inoxidizing coating and the basic unit wall body to through modes such as bonding, binding and with basic unit wall body zonulae occludens, compound phase transition anti-crack inoxidizing coating evenly paint on heat preservation 2, compound phase transition anti-crack inoxidizing coating the composition be anti-crack mortar and compound phase change material.
The composite phase change anti-cracking protective layer is characterized in that the anti-cracking mortar accounts for 90-95% by mass, the composite phase change material accounts for 5-10% by mass, and the composite phase change anti-cracking protective layer is prepared according to the following method:
(1) Mixing solid paraffin and liquid paraffin, heating at 70-100 deg.C, taking out after completely melting, stirring until cooling, repeating the operation for 3-5 times to thoroughly mix them;
(2) Placing the expandable graphite in a microwave oven, and heating and expanding the expandable graphite for 60s by using medium and high fire to obtain expanded graphite;
(3) Then preparing the prepared mixed paraffin and expanded graphite, heating in an environment of 70-100 ℃ for 1.5-3h, taking out and uniformly stirring;
(4) And adding the composite phase change material into the anti-crack mortar and uniformly mixing.
The anti-crack mortar is polymer anti-crack mortar.
The composite phase-change material in the composite phase-change anti-cracking protective layer is prepared from 90-93% of mixed paraffin and 7-10% of expanded graphite, and the phase-change temperature is 15-50 ℃.
The mixed paraffin in the composite phase-change material is prepared from 0.8% of oil content, 30% -40% of blocky white semi-refined solid paraffin with the melting point of 50-60 ℃ and 60% -70% of liquid paraffin of analytically pure AR, and the expanded graphite in the composite phase-change material is expanded graphite with the purity of 80 meshes and 99% and the expansion rate of 300.
The heat-insulating layer is made of polystyrene boards, polyurethane, heat-insulating mortar or heat-insulating rock wool.
The base wall body is a hollow brick wall, a concrete cast-in-place wall, a light partition wall and a solid brick wall.
Compared with the prior art, the heat storage and temperature regulation capacity of the existing wall body is improved, when the environmental temperature is high, indoor heat is absorbed by the composite phase change material in the anti-cracking protective layer of the wall body, and when the environmental temperature is reduced, the heat absorbed by the composite phase change material in the anti-cracking protective layer of the wall body is transferred to the environment. The invention combines the wall heat preservation and phase change heat storage technologies, realizes the recycling of the waste heat of the room, can slow down the indoor temperature change, plays a role in peak clipping and valley filling, and improves the comfort level of people living.
Drawings
Fig. 1 is a schematic cross-sectional view of a phase change heat storage temperature regulation anti-cracking wall body according to an embodiment of the invention.
Fig. 2 is a schematic view of the working principle of the phase change heat storage temperature adjustment anti-cracking wall body according to the embodiment of the invention.
In the figure: 1. a base layer wall body; 2. a heat-insulating layer; 3. and (4) compounding a phase change anti-cracking protective layer.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to fig. 1 and 2.
In order to achieve the object of the present invention, as shown in fig. 1 and 2, in one embodiment of the present invention, there is provided a phase change heat storage temperature adjustment crack-resistant wall body, including: the thermal insulation layer is located between the composite phase change anti-cracking protective layer and the base wall body and is tightly connected with the base wall body in a bonding mode, the composite phase change anti-cracking protective layer is evenly coated on the thermal insulation layer, and the composite phase change anti-cracking protective layer comprises anti-cracking mortar and a composite phase change material.
The composite phase change anti-crack protective layer is characterized in that the mass fraction of anti-crack mortar in the composite phase change anti-crack protective layer is 90%, the mass fraction of the composite phase change material is 10%, and the composite phase change anti-crack protective layer is prepared according to the following method:
(1) Mixing solid paraffin and liquid paraffin, heating at 100 deg.C, taking out after completely melting, stirring until cooling, repeating the operation for 5 times to thoroughly mix them;
(2) Placing the expandable graphite in a microwave oven, and heating and expanding the expandable graphite for 60s by medium and high fire to obtain expanded graphite;
(3) Then preparing the prepared mixed paraffin and expanded graphite, heating in an environment of 100 ℃, continuing for 3 hours, taking out and uniformly stirring;
(4) And adding the composite phase change material into the anti-crack mortar and uniformly mixing.
The anti-crack mortar is polymer anti-crack mortar.
The composite phase-change material in the composite phase-change anti-cracking protective layer 3 is prepared from 93% of mixed paraffin and 7% of expanded graphite, and the phase-change temperature is 45 ℃.
The mixed paraffin in the composite phase-change material is prepared from 0.8% of oil content, 30% -40% of blocky white semi-refined solid paraffin with the melting point of 45 ℃ and 70% of liquid paraffin of analytically pure AR, and the expanded graphite in the composite phase-change material is expanded graphite (80 meshes, 99% purity and 300% expansion).
The insulating layer 2 is a polystyrene board.
The base wall is a hollow brick wall.
In the great difference in temperature round the clock, the higher qinghai tibet area of the highest temperature in day, adopt phase transition temperature to be 45 ℃ of material when daytime, when ambient temperature is higher, the compound phase transition material in the phase transition wall body can absorb the heat, and night emits the heat when ambient temperature is lower, has realized recycling the waste heat of environment, can slow down indoor temperature change simultaneously, improves people's living comfort level.
In order to further optimize the implementation effect of the invention, in another embodiment of the invention, on the basis of the foregoing, the phase change material temperature is selected to be 28 ℃, in kunming areas where the temperature difference between day and night is not large, the phase change material can absorb heat and store the heat in the wall body at the noon, so that the indoor temperature is not greatly increased, and meanwhile, the wall body emits heat at night, so that the indoor temperature is constant, and the comfort of people living in the wall body is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. A phase change heat storage temperature adjustment anti-cracking wall body comprises: basic unit's wall body 1, heat preservation 2 and compound phase transition anti-crack inoxidizing coating 3, heat preservation 2 be located compound phase transition anti-crack inoxidizing coating 3 and basic unit's wall body 1 between to through modes such as bonding, binding and 1 zonulae occludens of basic unit's wall body, compound phase transition anti-crack inoxidizing coating 3 evenly paint on heat preservation 2, compound phase transition anti-crack inoxidizing coating 3's composition be anti-crack mortar and compound phase change material.
2. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the composite phase change anti-cracking protective layer 3 is prepared from 90-95% of anti-cracking mortar and 5-10% of composite phase change material by the following steps:
(1) Mixing solid paraffin and liquid paraffin, heating at 70-100 deg.C, taking out after completely melting, stirring until cooling, repeating the operation for 3-5 times to thoroughly mix them;
(2) Placing the expandable graphite in a microwave oven, and heating and expanding the expandable graphite for 60s by medium and high fire to obtain expanded graphite;
(3) Then preparing the prepared mixed paraffin and expanded graphite, heating in an environment of 70-100 ℃ for 1.5-3 hours, taking out and uniformly stirring;
(4) And adding the composite phase change material into the anti-crack mortar and uniformly mixing.
3. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the anti-crack mortar is polymer anti-crack mortar.
4. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the composite phase-change material in the composite phase-change anti-cracking protective layer 3 is prepared from 90-93% of mixed paraffin and 7-10% of expanded graphite, and the phase-change temperature is 15-50 ℃.
5. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the mixed paraffin in the composite phase-change material is prepared from 0.8% of oil content, 30% -40% of blocky white semi-refined solid paraffin with the melting point of 50-60 ℃ and 60% -70% of liquid paraffin of analytically pure AR, and the expanded graphite in the composite phase-change material is expanded graphite with the purity of 80 meshes and 99% and the expansion rate of 300.
6. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the heat-insulating layer 2 is made of polystyrene boards, polyurethane, heat-insulating mortar or heat-insulating rock wool.
7. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the base wall 1 is a hollow brick wall, a concrete cast-in-place wall, a light partition wall and a solid brick wall.
8. The phase change heat storage temperature-regulating anti-cracking wall body as claimed in claim 1, wherein: the positions of the base wall 1, the heat preservation layer 2 and the composite phase change anti-cracking protective layer 3 can be mutually replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514028.7A CN115341680A (en) | 2021-05-12 | 2021-05-12 | Phase-change heat-storage temperature-regulating anti-cracking wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110514028.7A CN115341680A (en) | 2021-05-12 | 2021-05-12 | Phase-change heat-storage temperature-regulating anti-cracking wall |
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| CN115341680A true CN115341680A (en) | 2022-11-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117050510A (en) * | 2023-09-27 | 2023-11-14 | 中国矿业大学 | Low-heat-release polyurethane foam material and preparation method and application thereof |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117050510A (en) * | 2023-09-27 | 2023-11-14 | 中国矿业大学 | Low-heat-release polyurethane foam material and preparation method and application thereof |
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