CN110453803A - A kind of energy-saving wall integrating phase-change material Yu heat pipe - Google Patents
A kind of energy-saving wall integrating phase-change material Yu heat pipe Download PDFInfo
- Publication number
- CN110453803A CN110453803A CN201910620592.XA CN201910620592A CN110453803A CN 110453803 A CN110453803 A CN 110453803A CN 201910620592 A CN201910620592 A CN 201910620592A CN 110453803 A CN110453803 A CN 110453803A
- Authority
- CN
- China
- Prior art keywords
- heat pipe
- phase
- change material
- energy
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
- F24F5/0021—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0089—Systems using radiation from walls or panels
-
- 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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The present invention relates to a kind of energy-saving walls for integrating phase-change material (PCM) and heat pipe, including concrete wall, phase-change material plate and heat pipe, the phase-change material plate is fixed on the back side of concrete wall, and the back side of phase-change material plate and concrete wall is coated with cement sand bed；The heat pipe is fixed on the front of concrete wall, and the evaporator section of heat pipe passes through in concrete wall insertion phase-change material plate, and the condensation segment of heat pipe far from the front of concrete wall and is connected with radiation refrigerator；The present invention heating conduction superpower using heat pipe, the mistake excess heat that PCM on daytime absorbs, night can be transmitted to outdoor by heat pipe and radiation refrigerator；PCM after heat release, phase switch to solid-state by liquid；So as to the heat absorption on daytime next day, so that wall can maintain certain temperature.
Description
Technical field
The present invention relates to building utilization of new energy resources and building energy saving field, especially a kind of collection phase-change material and heat pipe are one
The energy-saving wall of body.
Background technique
Nowadays, as the rapid growth of demographic and economic, the energy consumption in the world increase year by year, the use of traditional energy is made
At very big environmental pollution, according to the data of International Energy Agency, between 20 years of New Year, primary energy consumption amount increases by 49%,
CO2Discharge amount increases by 43%.And China is the big country of energy consumption, coal resources per capita ownership is global average level
50% or so, and the per capita ownership of oil and natural gas resource is even more and the energy down to 10% or so of global average level
Utilization efficiency is low.China's per GDP non-renewable energy consumption figure is much higher than world average level at present, be approximately equivalent to 2 times of the U.S.,
4 times of Japan.
With the continuous propulsion of Urbanization in China, 2,000,000,000 square metres of construction area is about increased newly every year, and build energy
Consumption accounts for about the 30-40% of total energy consumption, and to reduce the consumption of the energy and the discharge of greenhouse gases, the research worker of countries in the world exists
It finds new energy and does respective effort；As a kind of potential energy storage building material, phase-change material (PCM) progresses into building
The ranks of material absorb in the variation of phase or release higher calorific value since PCM has high potential heat value, become in phase
During change, temperature is almost unchanged；Phase-change accumulation energy wall ideal operation mode, daytime under the irradiation of the sun, phase-changing wall
Heat is absorbed, PCM has solid to become liquid；At night, outdoor temperature is lower, and PCM is changed into solid by liquid, discharges latent heat,
Waste heat drains into outdoor；The mechanical periodicity of phase in this way maintains the temperature of PCM near melting temperature.
PCM material latent heat of phase change with higher, according to physics knowledge it is found that needing to absorb or discharge when phase changes
The radiant heat of the sun can be absorbed in latent heat on daytime in this way, is unlikely to pass to indoor room；Night due to temperature decline,
The heat that PCM can be made to be stored up is discharged into outdoor；But in the operation of practical PCM, in fact it could happen that PCM phase is transformed into liquid
When state, continue the radiation energy for absorbing the sun；And night outside air temperature is higher, temperature needed for being not enough to solidify PCM, or
It says that PCM is cured to be not thorough, PCM is caused to be unable to periodic duty；Furthermore lower (the generally 0.2w/m. of the thermal coefficient of PCM
DEG C), the heat in PCM cannot be released soon.
Above situation results in PCM heat release and heat release not necessarily matches, and in the area of summer sweltering heat, may cause and absorbed heat
More, night heat release is insufficient, loses the effect of PCM energy storage.
Heat pipe has stronger heating conduction, and the left and right 23,000 W/ (mK) of thermal coefficient is a kind of with high-termal conductivity
The heat transfer element of energy.Heat pipe transmits heat by the evaporation Yu condensation of the working medium in Totally enclosed vacuum shell, has high
Thermal conductivity, good isothermal, cold and hot two sides heat transfer area can arbitrarily change, can remotely transferring, temperature controllable etc. one
Number of advantages is often used in the cooling of electronics.
Radiation refrigeration is not necessarily to moving component, and structure is very simple, and maintenance cost and initial outlay are lower, also more to environment
Close friend, thus there is very big energy conservation and environmental protection meaning and application prospect.Envelope of air around the earth has not different electromagnetic waves
Same transmitance, the higher wave band of transmitance are known as " atmospheric window ", and such as 0.3~2.5,3.2~4.8,8~13 μm；Under room temperature
Black body radiation be concentrated mainly on 8~13 mu m wavebands, using this characteristic, the object on ground can be by radiation heat transfer, will
Self heat is discharged into outer universe absolute zero space with 8~13 μm of electromagnetic wave, achievees the purpose that itself is cooled down, this is just
It is passive type radiation refrigeration, and does not need to consume additional energy.
Currently, there are many energy-conserving product of correlation PCM, heat pipe and radiation refrigeration technology, but triplicity is got up and built
It builds to form integrated structure, at home and abroad not yet find.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of sections for integrating phase-change material Yu heat pipe
Energy wall by the heat transfer of PCM excess enthalpy to outdoor, while utilizing radiation refrigerator pair using the superpower heating conduction of heat pipe
Space carries out radiant heat transfer, and the heat of PCM is released, the solidification of PCM is completed, so that PCM carries out the phase-state change in period,
Maintain wall temperature.
To achieve the above object, the invention adopts the following technical scheme:
A kind of energy-saving wall integrating phase-change material Yu heat pipe, including concrete wall, phase-change material plate and heat pipe, it is described
Phase-change material plate is fixed on the back side of concrete wall, and the back side of phase-change material plate is equipped with cement sand bed；The heat pipe is fixed
In the front of concrete wall, the evaporator section of heat pipe is passed through in concrete wall insertion phase-change material plate, and the condensation segment of heat pipe is remote
Front from concrete wall is simultaneously connected with radiation refrigerator.
Preferably, the phase-change material plate is packed into made of encapsulation in aluminium sheet cabinet as phase-change material.
Preferably, the phase-change material is paraffin, stearic acid, certain herbaceous plants with big flowers acid, hydrated sulfuric acid sodium or calcium chloride hydrate.
Preferably, the aluminium sheet tank thickness is 20mm, aluminium plate thickness 1mm.
Preferably, the radiation refrigerator includes including aluminium sheet, and the front of the aluminium sheet is uniformly coated with PET powder, aluminium
Radiating fin is distributed in the back side of plate.
Preferably, the condensation segment of the heat pipe and radiating fin pass through the back side that heat conductive silica gel is bonded in aluminium sheet.
Preferably, the heat pipe is flat hot pipe.
Preferably, the condensation segment of the heat pipe totally two, two heat pipes are located at the two sides of radiating fin.
Beneficial effects of the present invention are as follows:
Invention by the hardened conjunction of phase-change material of heat pipe and the concrete wall back side, heat pipe have the characteristics that it is good thermally conductive, heat pipe
The heat of PCM excess enthalpy can be transferred to the condensation segment of heat pipe by evaporator section, and the condensation segment of heat pipe is connected with radiation refrigerator, radiation
The main body of refrigerator is preferably aluminium sheet, and due to aluminium sheet reflectivity with higher, solar radiation can be reflected nearly all
It goes, the subsequent fin of aluminium sheet can go out the heat transfer of heat pipe condenser section；Night is usually long-wave radiation, in aluminium sheet front
PET powder to 8-13um reflectivity with higher, can by " atmospheric window " and space carry out radiation heat transfer, pass through
Radiation refrigerator completes the solidification of PCM, or the cooling capacity of excess enthalpy is passed to PCM, reduces indoor refrigeration duty.
Wall body structure design of the invention rationally, can not only make full use of the function of PCM phase-transition heat-storage, moreover it is possible to will within the walls
Excess enthalpy heat derives room in, night imported into extraneous cooling capacity in wall by radiation refrigeration；Pass through the row on daytime, night
Heat and accumulation of heat complete the period of PCM phase transformation, make to remain appropriate temperature-resistant within the walls, reduce indoor required air-conditioning refrigeration duty,
Realize the effect of energy-saving and emission-reduction；Set of the present invention heat pipe, radiation refrigeration and phase change energy storage technology, can be widely popularized, and realize
The energy-saving of building.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is schematic view of the front view of the invention；
Fig. 3 is the structural schematic diagram of radiation refrigerator；
Wherein: 1- concrete wall, 2- phase-change material plate, 3- heat pipe, 31- evaporator section, 32- condensation segment, 33- isolation section, 4- water
Silt particle pulp layer, 5- radiation refrigerator, 51- aluminium sheet, 52- radiating fin.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
A kind of energy-saving wall integrating phase-change material Yu heat pipe shown in referring to Figures 1 and 2, including concrete wall 1, phase
Become plate of material 2 and heat pipe 3.
Preferably, phase-change material plate 2 can be packed into encapsulate in aluminium sheet cabinet by phase-change material and is made, phase transformation
Material can select paraffin, stearic acid, certain herbaceous plants with big flowers acid, hydrated sulfuric acid sodium or calcium chloride hydrate, and phase transition temperature is at 26 DEG C or so, the aluminium
Plate tank thickness is 20mm, aluminium plate thickness 1mm.
Phase-change material plate 2 is sticked to the back side of concrete wall 1 by heat conductive silica gel, and water is smeared at the back side of phase-change material plate 2
Silt particle pulp layer 4.
Heat pipe 3 in the present embodiment uses flat style, and three sections of bendings, is in Z-shaped, and the both ends of heat pipe 3 are respectively to steam
Section 31 and condensation segment 32 are sent out, centre is isolation section 33, and isolation section 33 penetrates solid with concrete wall 1 from 1 front of concrete wall
It is fixed, evaporator section 31 is embedded in phase-change material 2, condensation segment 32 is under the support of isolation section 33, the front far from concrete wall 1
And it is connected with radiation refrigerator 5.
Referring to shown in Fig. 3, the radiation refrigerator 5 includes including aluminium sheet 51, and the front of the aluminium sheet 51 is uniformly coated with
PET powder can be toasted in constant temperature baking box so that PET powder is attached to the front face surface of aluminium sheet 51.
The back side of aluminium sheet 51 is bonded the condensation segment 32 and radiating fin 52 of heat pipe 3 by heat conductive silica gel, and can be by such as
The fasteners such as screw, bolt carry out externally reinforced.
There are two heat pipes 3 in the present embodiment, and the condensation segment 32 of two heat pipes 3 is located at the two sides of radiating fin 52,
Conducive to heat transfer and play a supportive role, the practical heat pipe 3 that also can according to need using different number.
Working principle of the present invention is as follows:
Traditional hardened conjunction of concrete wall and phase-change material is formed energy-saving wall by the present invention, since phase-change material has Gao Qian
Heat melts the advantages that narrow setting temperature, stable chemical performance, there is certain usage amount in construction market.
The ideal operation mode of energy-saving wall are as follows: daytime, heat absorbing wall, phase-change material was by solid under the irradiation of the sun
Body becomes liquid；At night, outdoor temperature is lower, and phase-change material is changed into solid by liquid, discharges latent heat, drains into outdoor.
However during the broiling summer, sun intensity is higher, and after phase-change material heat absorption is melted, temperature also will continue to increase, mistake
Remaining heat will be transmitted to indoor room, increase indoor waste heat load.
For this purpose, energy-saving wall of the invention has been embedded in heat pipe, it, will be in PCM since heat pipe has the good capacity of heat transmission
Condensation segment of the excess enthalpy heat derives to heat pipe, the fixed aluminium sheet for being coated with PET powder on heat pipe condenser section, aluminium sheet night with
Temperature approximation absolute zero space carries out radiation refrigeration, and the heat of heat pipe condenser section is discharged；Daytime heat pipe condenser section
Heat can be dispersed into the external world by the fin at the radiation refrigerator back side；So that maintain melting temperature always attached for the temperature of PCM
Closely, the Thermal comfort for improving indoor people, reduces indoor air-conditioning refrigeration duty.
The course of work of the invention is as follows:
(1) operational mode on daytime
The front of concrete wall 1 is in outdoor, and indoors, daytime, concrete wall 1 absorbed heat under the irradiation of sunlight at the back side,
The phase-change material plate 2 at 1 back side of concrete wall absorbs the heat of concrete wall 1, and after reaching phase transition temperature, PCM is become by solid phase
For liquid phase, such as continue to absorb heat at this time, the temperature of PCM also will continue to increase, but since heat pipe 3 has the characteristics that highly thermally conductive property, heat
Pipe 3 can be by the heat " transfer " to the aluminium sheet 51 of radiation refrigerator 5 of PCM, and the radiating fin 52 on aluminium sheet 51 spontaneously will
Heat transfer is to outdoor, within the scope of the temperature of PCM can be made to maintain centainly.
(2) night operational mode
Night carries out spoke between " atmospheric window " and universe that the PET powder on the aluminium sheet 51 of radiation refrigerator 5 passes through long wave 8-13um
Refrigeration is penetrated, cooling capacity is brought into PCM material, accelerates the solidification of PCM, it might even be possible to so that PCM is stored more cooling capacity, in case more
It uses in the daytime well.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (8)
1. a kind of energy-saving wall for integrating phase-change material Yu heat pipe, including concrete wall, which is characterized in that further include phase
Become plate of material and heat pipe, the phase-change material plate is fixed on the back side of concrete wall, and the back side of phase-change material plate is equipped with cement
Screed；The heat pipe is fixed on the front of concrete wall, and the evaporator section of heat pipe passes through concrete wall and is embedded in phase-change material
In plate, the condensation segment of heat pipe far from the front of concrete wall and is connected with radiation refrigerator.
2. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to claim 1, which is characterized in that described
Phase-change material plate is packed into made of encapsulation in aluminium sheet cabinet as phase-change material.
3. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to claim 2, which is characterized in that described
Phase-change material is paraffin, stearic acid, certain herbaceous plants with big flowers acid, hydrated sulfuric acid sodium or calcium chloride hydrate.
4. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to claim 2 or 3, which is characterized in that
The aluminium sheet tank thickness is 20mm, aluminium plate thickness 1mm.
5. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to claim 1, which is characterized in that described
Radiation refrigerator includes including aluminium sheet, and the front of the aluminium sheet is uniformly coated with PET powder, and radiating fin is distributed in the back side of aluminium sheet
Piece.
6. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to claim 5, which is characterized in that described
The condensation segment and radiating fin of heat pipe pass through the back side that heat conductive silica gel is bonded in aluminium sheet.
7. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to claim 6, which is characterized in that described
Heat pipe is flat hot pipe.
8. a kind of energy-saving wall for integrating phase-change material Yu heat pipe according to any one of claim 5,6,7,
It is characterized in that, the heat pipe totally two, the condensation segment of two heat pipes is located at the two sides of radiating fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620592.XA CN110453803A (en) | 2019-07-10 | 2019-07-10 | A kind of energy-saving wall integrating phase-change material Yu heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620592.XA CN110453803A (en) | 2019-07-10 | 2019-07-10 | A kind of energy-saving wall integrating phase-change material Yu heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110453803A true CN110453803A (en) | 2019-11-15 |
Family
ID=68482476
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910620592.XA Pending CN110453803A (en) | 2019-07-10 | 2019-07-10 | A kind of energy-saving wall integrating phase-change material Yu heat pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374118A (en) * | 2021-07-01 | 2021-09-10 | 中国人民解放军军事科学院国防工程研究院 | Novel phase-change energy-saving wall based on active and passive adjustment technology |
| CN113932277A (en) * | 2021-11-22 | 2022-01-14 | 燕山大学 | Water-through wood structure wall |
| CN114151879A (en) * | 2021-12-15 | 2022-03-08 | 西安建筑科技大学 | Portable passive dehumidification system suitable for tent |
| CN115200126A (en) * | 2022-09-15 | 2022-10-18 | 河北工业大学 | Indoor temperature prediction and regulation system based on room temperature demand |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374118A (en) * | 2021-07-01 | 2021-09-10 | 中国人民解放军军事科学院国防工程研究院 | Novel phase-change energy-saving wall based on active and passive adjustment technology |
| CN113932277A (en) * | 2021-11-22 | 2022-01-14 | 燕山大学 | Water-through wood structure wall |
| CN114151879A (en) * | 2021-12-15 | 2022-03-08 | 西安建筑科技大学 | Portable passive dehumidification system suitable for tent |
| CN115200126A (en) * | 2022-09-15 | 2022-10-18 | 河北工业大学 | Indoor temperature prediction and regulation system based on room temperature demand |
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Application publication date: 20191115 |
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| RJ01 | Rejection of invention patent application after publication |