CN115030353A - Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange - Google Patents
Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange Download PDFInfo
- Publication number
- CN115030353A CN115030353A CN202210640144.8A CN202210640144A CN115030353A CN 115030353 A CN115030353 A CN 115030353A CN 202210640144 A CN202210640144 A CN 202210640144A CN 115030353 A CN115030353 A CN 115030353A
- Authority
- CN
- China
- Prior art keywords
- layer
- phase change
- cold accumulation
- heat
- change cold
- 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
Links
- 238000009825 accumulation Methods 0.000 title claims abstract description 110
- 230000008859 change Effects 0.000 title claims abstract description 91
- 230000008030 elimination Effects 0.000 title claims abstract description 36
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 36
- 238000012546 transfer Methods 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 22
- 230000030279 gene silencing Effects 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 18
- 230000005855 radiation Effects 0.000 claims description 16
- 238000013461 design Methods 0.000 claims description 13
- 239000012782 phase change material Substances 0.000 claims description 11
- 230000008014 freezing Effects 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 239000011232 storage material Substances 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005034 decoration Methods 0.000 claims description 5
- 230000009970 fire resistant effect Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 230000005496 eutectics Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 239000012784 inorganic fiber Substances 0.000 claims description 2
- 229910010272 inorganic material Inorganic materials 0.000 claims description 2
- 239000011147 inorganic material Substances 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 description 69
- 238000001816 cooling Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000005457 Black-body radiation Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 paraffin Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
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
-
- 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
- E04B1/88—Insulating elements for both heat and sound
-
- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/945—Load-supporting structures specially adapted therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/023—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
-
- 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 invention belongs to the technical field of heat exchange equipment, and relates to a wall with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement. The wall body comprises a concrete layer (1), a phase change cold accumulation layer (2), a micro-perforated plate (5), a heat insulation layer (8) and a heat conduction cold bridge. The wall body with the functions of noise elimination, phase change cold accumulation and heat transfer enhancement can have the functions of noise elimination, phase change cold accumulation and heat transfer enhancement when being used between a nuclear power station main control room and electrical instrument equipment.
Description
Technical Field
The invention belongs to the technical field of heat exchange equipment, and relates to a wall with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement.
Background
After the alternating current between the main control room of the nuclear power station and the electrical instrument equipment is lost, if ventilation or cooling is not performed, the heat dissipation amount is accumulated, so that the temperature of the room is gradually increased, and the temperature limit required by equipment operation and personnel residence can be exceeded. At present, most nuclear power stations adopt active ventilation cooling systems with emergency power supplies, machine rooms and air pipes occupy large areas, equipment purchasing and operation and maintenance costs are high, the capacity of the emergency power supplies after accidents is large, and reliability and economy need to be improved.
The civil market has a cold-storage wall technique that combines solid phase change material and refrigerated water pipe, can combine the installation with the concrete wall body, does not occupy extra air conditioner room, possesses good passive cooling effect, but its material and structure do not satisfy the design requirement in aspects such as nuclear power station building decoration, fire prevention, waterproof, radiation protection.
The enclosure structure wall body of the habitability area of the nuclear power station main control room is thick and has excellent cold accumulation potential, but in order to meet the noise limit value of the main control room, the outer vertical surface of the wall decoration needs to be provided with a sound absorption plate with micro-perforations and sound absorption materials, so that the heat resistance is high, and the cold accumulation and release effects of a concrete structure are reduced.
Disclosure of Invention
The invention aims to provide a wall with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement, so that the wall has the functions of noise elimination, phase change cold accumulation and heat exchange enhancement when being used between a nuclear power station main control room and electrical instrument equipment.
In order to achieve the purpose, in a basic embodiment, the invention provides a wall body with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement, wherein the wall body comprises a concrete layer, a phase change cold accumulation layer, a micro-perforated plate, a heat insulation layer and a heat conduction cold bridge,
the heat insulation layer is arranged on the outermost side of the wall body and used for limiting the heat transfer from the cold accumulation boundary to the outside;
the concrete layer is connected with the phase change cold accumulation layer and is integrally positioned on the inner side of the heat insulation layer and the outer side of the micro-perforated plate;
the concrete layer is used for bearing the load of the wall structure and providing part of cold storage capacity;
the phase change cold accumulation layer is used for providing most of cold accumulation;
the micro-perforated plate is used for radiation heat exchange, convection heat exchange and noise reduction;
the heat conduction cold bridge is connected with the micro-perforated plate, the phase change cold accumulation layer and the concrete layer, namely, the heat conduction cold bridge is used as a structural support piece and also used as a heat transfer component.
In a preferred embodiment, the invention provides a wall body with the functions of sound elimination, phase change cold accumulation and heat exchange enhancement, wherein:
the phase-change cold accumulation layer is mainly composed of a support material and a phase-change cold accumulation material, the support material is a porous or fibrous solid, and particles of the phase-change cold accumulation material are mixed in the support material according to a certain proportion, so that the phase-change cold accumulation layer can be maintained to be solid as a whole in any phase state;
the phase-change cold storage material can be made of organic materials, inorganic materials or eutectic salt, so that the phase-change cold storage material can be kept in a solid state below the room design temperature (20-50 ℃), is converted into a liquid state above the room design temperature, and the latent heat of fusion of the phase-change cold storage material is not lower than 200 kJ/kg;
the micro-perforated plate is made of high heat conduction metal with the heat conduction coefficient more than 100W/m.K, and the surface of the micro-perforated plate is coated with a black body radiation coating;
the heat-insulating layer is made of fireproof heat-insulating material, the heat conductivity coefficient of the heat-insulating layer is less than 0.05W/m.K, the fire-resistant temperature is greater than 1200 ℃, and the fire-resistant time is greater than 2 hours so as to reduce the fire risk (if the heat-insulating layer is used in a nuclear power station, the material also needs to be resistant to radiation (the dosage is greater than 4 multiplied by 10) 4 Gy), aging resistance, steam resistance, no water absorption, no swelling, no mold formation).
In a preferred embodiment, the invention provides a wall body with the functions of sound elimination, phase change cold accumulation and heat exchange enhancement, wherein when the phase change material is a combustible organic compound comprising paraffin, the phase change cold accumulation layer can be arranged between the concrete layer and the heat insulation layer.
In a preferred embodiment, the invention provides a wall body with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement, wherein the inner side surface of the phase change cold accumulation layer is processed into a rough porous shape or is attached with a layer of noise elimination material so as to have certain resistance noise elimination characteristics, and the wall body is matched with the micro-perforated plate to form an impedance composite noise elimination function.
In a preferred embodiment, the invention provides a wall with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement, wherein an integral gravity heat pipe is used as a heat conduction cold bridge to improve the heat conduction capacity inside the phase change cold accumulation layer. Different cold accumulation and cold release rates can be realized by utilizing the unidirectional heat transfer of the heat pipe. If the room needs quick cold accumulation and slow cold release, the gravity heat pipe evaporation section is arranged in the phase change cold accumulation layer; if the room needs slow cold accumulation and fast cold release, the gravity heat pipe evaporation section is arranged at the indoor side.
In a preferred embodiment, the invention provides a wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange, wherein if the room design temperature is higher than or equal to the phase change temperature of the wall during normal operation, the wall further comprises a chilled water coil (if the room design temperature is lower than the phase change temperature of the wall during normal operation, the chilled water coil is not needed, and the phase change material is maintained to be solid only by heat pipe heat conduction), which penetrates through and is arranged in or on the surface of the phase change cold accumulation layer, so that most of cold accumulation is provided; the freezing water coil is spiral, circuitous, spiral circuitous or capillary branching type (wherein the capillary branching type can improve the uniformity of cooling and reduce the design pressure of the pipeline and the risk of flooding).
In a preferred embodiment, the invention provides a wall body with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement, wherein the phase change cold accumulation layer can be positioned on the outer side (close to the outdoor) of the concrete layer or on the inner side (close to the indoor) of the concrete layer according to the position of a chilled water interface of the chilled water coil pipe.
In a preferred embodiment, the invention provides a wall with functions of noise elimination, phase change cold accumulation and heat exchange enhancement, wherein the wall further comprises a drainage groove and a drainage pipe which are arranged on the ground below the phase change cold accumulation layer and are used for collecting and draining pipeline leakage water and condensed water, so that the influence of flooding on indoor decoration and equipment is avoided, and the wall is used as a means for monitoring the integrity of the chilled water coil pipe.
In a preferred embodiment, the invention provides a wall with the functions of noise elimination, phase change cold accumulation and heat exchange enhancement, wherein the micro-perforated plate adopts a cold radiation plate structure and keeps a certain distance from the innermost side of the wall to form a ventilation cavity which is through from top to bottom, natural ventilation is formed by utilizing the temperature difference of a room/wall and the height difference of upper and lower micro-perforations, and radiation and convection heat transfer are enhanced at the same time.
In a preferred embodiment, the invention provides a wall body with the functions of sound attenuation, phase change cold accumulation and heat exchange enhancement, wherein the wall body further comprises a resistive sound attenuation layer and a ventilation cavity arranged in the resistive sound attenuation layer,
the resistive silencing layer is arranged between the phase change cold accumulation layer and the micro-perforated plate and is used for forming a silencing heat exchange layer together with the micro-perforated plate and the ventilation cavity and meeting the requirements of resistance and resistance silencing;
the material of the resistive silencing layer is a flame-retardant organic fiber or inorganic fiber (if the resistive silencing layer is used for a nuclear power station, the radiation-resistant dose also needs to meet the requirement of 4 multiplied by 10 4 Gy)。
The wall body with the functions of noise elimination, phase change cold accumulation and heat transfer enhancement has the beneficial effects that when the wall body with the functions of noise elimination, phase change cold accumulation and heat transfer enhancement is used between a main control room of a nuclear power station and electrical instrument equipment, the wall body with the functions of noise elimination, phase change cold accumulation and heat transfer enhancement has the functions of noise elimination, phase change cold accumulation and heat transfer enhancement.
The wall body of the invention stores cold energy in concrete and phase-change material through the freezing water coil pipe in the wall body during normal operation, the cold storage quantity in the concrete and the phase-change material is transmitted to a room through the heat pipe and the heat exchange plate after power failure accident, and meanwhile, the heat exchange plate has the functions of noise elimination and noise reduction through the special structural design.
The beneficial effects of the invention are embodied in that:
1) the passive running phase-change cold storage wall is adopted in the heat dissipation room, so that the active cooling system after the electric accident disappears can be taken out, the economical efficiency and the passive reliability of the air conditioning system are improved, and the room noise can be further reduced.
2) According to the invention, the phase change cold accumulation layer is arranged on the outer side of the concrete wall body, and the heat conduction in the wall is enhanced by adopting the heat pipe, so that cold accumulation and cold release of a room can be met without entering the room by chilled water, and the risk of electric equipment failure caused by water pipe leakage is reduced.
3) The special fireproof heat-insulating material for the nuclear power station, which meets a certain fire-resistant time, is used as the outer heat-insulating layer of the wall body, so that the risk of fire hazard of the phase change cold accumulation layer is reduced, and the leakage of the cold accumulation amount to the outside is also reduced.
4) According to the invention, the concrete layer, the phase change cold accumulation layer and the silencing heat exchange plate are communicated and connected through the integral heat pipe, so that the structural strength of the wall body is increased, the heat conduction inside the wall body is enhanced, and the problem of low utilization rate of the cold accumulation of the enclosure structure of the nuclear power station main control room is solved.
5) According to the invention, the micro-perforated plate made of metal with high thermal conductivity is used as the heat exchange plate, the black body radiation coating is added on the surface of the heat exchange plate, and the natural convection cavity is reserved, so that the convection, radiation heat exchange and noise reduction effects of the micro-perforated plate can be effectively enhanced.
Drawings
Fig. 1 is a schematic structural diagram of a wall body having functions of sound attenuation, phase change cold storage and enhanced heat exchange in embodiment 1.
Fig. 2 is a schematic structural view of a phase change cold storage refractory wall in which the chilled water does not enter the room in embodiment 2.
Fig. 3 is a schematic structural view of the phase change cold storage wall without the freezing water pipe in embodiment 3.
Fig. 4 is a schematic view of the phase change cold storage wall structure using the capillary freezing water tube in embodiment 4.
Detailed Description
An exemplary wall body structure with the functions of noise elimination, phase change cold accumulation and enhanced heat exchange is shown in figure 1 and comprises a concrete layer 1, a phase change cold accumulation layer 2 (a support material is honeycomb activated carbon, and a phase change material is paraffin with a melting point of 28 ℃), a resistive noise elimination layer 4 (made of glass wool with the thickness of 3cm and wrapped by irradiation-resistant glass fiber cloth), a micro-perforated plate 5 (made of 0.6mm aluminum alloy plate and coated with a black body radiation coating on the surface), a ventilation cavity 7, a heat insulation layer 8 (made of silicone rubber or glass wool with the thickness of 50-80mm and the fire resistance time of 2h), a drainage channel 9, a drainage pipe 10 and a heat conduction cold bridge.
And the heat preservation layer 8 is arranged on the outermost side of the wall body and used for limiting the heat transfer from the cold accumulation boundary to the outside.
The concrete layer 1 is connected with the phase change cold accumulation layer 2 and is integrally positioned on the inner side of the heat preservation layer 8 and the outer side of the micro-perforated plate 5. The concrete layer 1 is used for bearing the load of the wall structure and providing part of the cold storage capacity. The phase change cold accumulation layer 2 is used for providing most of cold accumulation. When the phase change material is a combustible organic compound including paraffin, the phase change cold accumulation layer 2 can be arranged between the concrete layer 1 and the heat preservation layer 8. The inner side surface of the phase change cold accumulation layer 2 is processed into a rough porous shape or is attached with a layer of silencing material so as to have certain resistance silencing characteristic, and the phase change cold accumulation layer is matched with the micro-perforated plate 5 to form an impedance composite silencing function.
The microperforated plate 5 is used for radiant heat transfer, convective heat transfer and noise reduction. The micro-perforated plate 5 is in a cold radiation plate structure, keeps a certain distance from the innermost side of the wall body to form a ventilation cavity which is communicated up and down, forms natural ventilation by utilizing the temperature difference of a room/wall body and the height difference of the upper micro-perforated hole and the lower micro-perforated hole, and simultaneously strengthens radiation and convection heat transfer.
The resistive noise elimination layer 4 is arranged between the phase change cold accumulation layer 2 and the micro-perforated plate 5, and the ventilation cavity 7 is arranged in the resistive noise elimination layer 4. The resistive silencing layer 4 is used for forming a silencing heat exchange layer together with the micro-perforated plate 5 and the ventilation cavity 7, and simultaneously meets the requirements of resistance and resistance silencing.
The heat conduction cold bridge is connected with the micro-perforated plate 5, the phase change cold accumulation layer 2 and the concrete layer 1, namely, the heat conduction cold bridge is used as a structural support piece and also used as a heat transfer part. The integral gravity heat pipe is used as a heat conduction cold bridge to improve the heat conduction capability inside the phase change cold accumulation layer 2. Different cold accumulation and cold release rates can be realized by utilizing the unidirectional heat transfer of the heat pipe. If the room needs quick cold accumulation and slow cold release, the gravity heat pipe evaporation section is arranged in the phase change cold accumulation layer; if the room needs slow cold accumulation and fast cold release, the evaporation section of the gravity assisted heat pipe is arranged at the indoor side.
If the room design temperature is higher than or equal to the wall phase-change temperature during normal operation, the wall also comprises a chilled water coil 3 (if the room design temperature is lower than the wall phase-change temperature during normal operation, the chilled water coil 3 is not needed, and the phase-change material is maintained to be solid only by heat conduction of a heat pipe), and the chilled water coil penetrates through and is arranged in the phase-change cold accumulation layer 2 or on the surface of the phase-change cold accumulation layer for combination of the chilled water coil and the phase-change cold accumulation layer to provide most of cold accumulation; the chilled water coil 3 is of a spiral shape, a circuitous type, a spiral circuitous type or a capillary branching type (wherein the capillary branching type can improve the uniformity of cooling and reduce the pipeline design pressure and the risk of flooding). According to the chilled water interface position of the chilled water coil pipe 3, the phase change cold accumulation layer 2 can be positioned outside the concrete layer 1 (close to outdoor) or inside the concrete layer 1 (close to indoor).
The ground below the phase change cold accumulation layer 2 is provided with a drainage groove 9 and a drainage pipe 10 for collecting and draining pipeline leakage water and condensed water, so that the influence of flooding on indoor decoration and equipment is avoided, and the device is used for monitoring the integrity of the chilled water coil pipe 3.
The above exemplary application of the wall body with the functions of sound attenuation, phase change cold storage and heat exchange enhancement of the present invention is as follows:
example 1:
the concrete layer 1 is a main stressed member of the wall body and bears part of the cold accumulation. The phase change cold accumulation layer 2 is composed of phase change cold accumulation materials and chilled water coils and bears most of cold accumulation. The heat preservation layer 8 is used for reducing the leakage of the cold accumulation amount to the outside, improving the cold accumulation efficiency and reducing the refrigeration energy consumption.
The noise elimination heat exchange layer is composed of a resistance noise elimination layer 4, a micro-perforated plate 5 and a ventilation cavity 7, and can meet the requirements of resistance and resistance noise elimination simultaneously. The micro-perforated plate 5 is made of high-heat-conductivity metal, the surface of the micro-perforated plate is coated with a black radiation coating, and the micro-perforated plate has a high radiation heat exchange coefficient. Meanwhile, the micro-perforated plate 5 can form natural ventilation power by utilizing the internal and external temperature difference and the height difference, and the internal and external air circulation is carried out through the ventilation cavity 7, so that the higher convective heat transfer coefficient can be ensured.
The concrete layer 1, the phase change cold accumulation layer 2 and the micro-perforated plate 5 are connected through the integral heat pipe 6 to form a heat conduction cold bridge. The integral heat pipe 6 is of a steel pipe or hollow square steel structure, has high strength and rigidity, and can be used as a support rod of the phase change cold accumulation layer 2 and the micro-perforated plate 5. The condensation section of the integral heat pipe 6 is embedded in the concrete layer 1 through a sleeve, and the evaporation section is fixed on the micro-perforated plate 5 and keeps a certain angle, so that gravity liquid return in the heat pipe is facilitated.
During normal operation, the chilled water coil 3 maintains the temperature of the phase change cold accumulation layer 2 to be slightly lower than the room temperature, and can be used for removing part of the room cold load, and the phase change material keeps solid. After the power failure accident, the refrigeration water system and the room air conditioning system are shut down, the temperature difference between the wall and the room is gradually increased, the phase-change material is melted, and under the combined action of heat conduction of the heat pipe, radiation heat exchange of the micro-perforated plate 5 and cavity convection heat exchange, the cold storage amount of the concrete, the reserved refrigeration water and the phase-change cold storage material is led into the room, and the room temperature is kept lower than a set value within a certain time.
The bottom of the phase change cold accumulation layer 2 is provided with a drainage groove 9 and a drainage pipe 10 which are used for collecting and removing the leakage water of the freezing water pipe and the wall surface condensate water, and meanwhile, whether the freezing water coil pipe 3 leaks or not in the wall can be judged according to the drainage quantity.
The chilled water coil 3 can be arranged in a circuitous or spiral way in the phase change cold accumulation layer 2, and an up-feeding and down-returning way is recommended to improve the heat exchange efficiency.
Example 2:
as shown in fig. 2, the present embodiment provides a phase change cold storage refractory wall structure in which chilled water does not enter a room, and is suitable for a room with high waterproof and fireproof requirements. The wall body is divided into 5 layers from the outdoor side to the indoor side, and the 5 layers are respectively a heat preservation layer 8 (serving as a fireproof heat insulation layer), a phase change cold accumulation layer 2, a concrete layer 1, a resistive noise elimination layer 4 (namely a noise elimination heat exchange layer) and a micro-perforated plate 5.
The difference from the embodiment 1 is that the phase change cold accumulation layer 2 is arranged outside the concrete layer 1, and the interface of the chilled water coil pipe 3 is ensured to be operated outside a room; the outer side of the wall is coated by the heat-insulating layer 8, so that the phase change cold accumulation material cannot burn within the duration time of the fire; the integral heat pipe 6 penetrates through the concrete layer 1, and heat conduction between the phase change cold accumulation layer 2 and the micro-perforated plate 5 is ensured.
Example 3:
as shown in fig. 3, the present embodiment provides a phase change cold storage wall structure without a freezing water pipe, which is suitable for an air conditioning room with a low normal operating temperature and an electrical instrument room with a high waterproof requirement.
The difference from the embodiment 1 is that the chilled water coil 3 in the phase change cold storage layer 2 is eliminated, and the inclination angle of the whole (figure 3a) or part (figure 3b) of the integral heat pipe 6 is changed. The evaporation section of the integral heat pipe 6 (i.e. the cold accumulation heat pipe) is arranged in the wall body, and the condensation section is connected with the micro-perforated plate 5, so that the redundant cold energy in the room can be efficiently guided into the wall body for storage in normal operation. After power failure accident, when the room temperature is higher than the wall temperature, the cold storage amount is guided into the room through the metal part (figure 3a) of the integral heat pipe 6 or the cold release heat pipe 11 (figure 3 b).
Example 4:
as shown in fig. 4, the present embodiment provides a phase change cold storage wall structure using capillary freezing water pipes, which is suitable for rooms with limited wall thickness.
Compared with the embodiment 1, the difference is that the circuitous type chilled water coil pipe 3 is replaced by the chilled water main pipe 13 and the capillary chilled water branch pipe 12, the filling ratio and the specific surface area of the capillary branch pipe are larger than those of a common chilled water pipe, and the heat exchange with the phase-change material is more uniform; and the chilled water is conveyed by utilizing the capillary action and the gravity action, so that the pipeline resistance is smaller, the requirement on water supply pressure is lower, and the leakage risk is reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations. The foregoing examples or embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (10)
1. The utility model provides a have wall body of noise elimination, phase transition cold-storage and enhancement heat transfer function concurrently which characterized in that: the wall body comprises a concrete layer (1), a phase change cold accumulation layer (2), a micro-perforated plate (5), a heat preservation layer (8) and a heat conduction cold bridge,
the heat insulation layer (8) is arranged on the outermost side of the wall body and used for limiting the heat transfer from the cold accumulation boundary to the outside;
the concrete layer (1) is connected with the phase change cold accumulation layer (2), and is integrally positioned on the inner side of the heat insulation layer (8) and the outer side of the micro-perforated plate (5);
the concrete layer (1) is used for bearing the load of a wall structure and providing part of cold storage capacity;
the phase change cold accumulation layer (2) is used for providing most of cold accumulation;
the micro-perforated plate (5) is used for radiation heat exchange, convection heat exchange and noise reduction;
the heat conduction cold bridge is connected with the micro-perforated plate (5), the phase change cold accumulation layer (2) and the concrete layer (1), and is used as a structural support piece and a heat transfer part.
2. The wall of claim 1, wherein:
the phase change cold accumulation layer (2) mainly comprises a support material and a phase change cold accumulation material, the support material is a porous or fibrous solid, and particles of the phase change cold accumulation material are mixed in the support material according to a certain proportion, so that the phase change cold accumulation layer (2) can maintain a solid state as a whole in any phase state;
the phase-change cold storage material can be made of organic materials, inorganic materials or eutectic salt, so that the phase-change cold storage material can be kept in a solid state below the design temperature of a room and is converted into a liquid state above the design temperature of the room, and the latent heat of fusion of the phase-change cold storage material is not lower than 200 kJ/kg;
the micro-perforated plate (5) is made of high heat conduction metal with the heat conduction coefficient more than 100W/m.K, and the surface of the micro-perforated plate is coated with a black radiation coating;
the heat-insulating layer (8) is made of fireproof heat-insulating materials, the heat conductivity coefficient of the heat-insulating layer is less than 0.05W/m.K, the fire-resistant temperature is greater than 1200 ℃, and the fire-resistant time is greater than 2 hours, so that the fire risk is reduced.
3. The wall of claim 1, wherein: when the phase change material is a combustible organic compound containing paraffin, the phase change cold accumulation layer (2) can be arranged between the concrete layer (1) and the heat insulation layer (8).
4. The wall of claim 1, wherein: the inner side surface of the phase change cold accumulation layer (2) is processed into a rough porous shape or is attached with a layer of silencing material so as to have certain resistance silencing characteristic, and the phase change cold accumulation layer is matched with the micro-perforated plate (5) to form an impedance composite silencing function.
5. The wall of claim 1, wherein: an integral gravity heat pipe is used as a heat conduction cold bridge to improve the heat conduction capability inside the phase change cold accumulation layer (2).
6. The wall of claim 1, wherein: if the design temperature of the room is more than or equal to the phase change temperature of the wall body during normal operation, the wall body also comprises a chilled water coil pipe (3) which penetrates through and is arranged inside or on the surface of the phase change cold accumulation layer (2) for combining the chilled water coil pipe and the chilled water coil pipe to provide most of cold accumulation; the freezing water coil (3) is in a spiral shape, a circuitous shape, a spiral circuitous shape or a capillary branch shape.
7. The wall of claim 6, wherein: according to the chilled water interface position of the chilled water coil pipe (3), the phase change cold accumulation layer (2) can be positioned on the outer side of the concrete layer (1) or on the inner side of the concrete layer (1).
8. The wall of claim 6, wherein: the wall body further comprises a drainage groove (9) and a drainage pipe (10) which are arranged on the ground below the phase change cold accumulation layer (2) and used for collecting and draining pipeline leakage water and condensed water, the influence of flooding on interior decoration and equipment is avoided, and the drainage groove and the drainage pipe are used as means for monitoring the integrity of the freezing water coil pipe (3).
9. The wall of claim 1, wherein: the micro-perforated plate (5) is of a cold radiation plate structure, and keeps a certain distance from the innermost side of the wall body to form a ventilation cavity which is communicated up and down, natural ventilation is formed by utilizing the temperature difference of a room/the wall body and the height difference of the upper micro-perforated hole and the lower micro-perforated hole, and meanwhile radiation and convection heat transfer are enhanced.
10. The wall of claim 1, wherein: the wall body also comprises a resistive silencing layer (4) and a ventilation cavity (7) arranged in the resistive silencing layer,
the resistive silencing layer (4) is arranged between the phase change cold accumulation layer (2) and the micro-perforated plate (5) and is used for forming a silencing heat exchange layer together with the micro-perforated plate (5) and the ventilation cavity (7) and meeting the requirements of resistive silencing and resistive silencing;
the material of the resistive noise elimination layer (4) is flame-retardant organic fiber or inorganic fiber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640144.8A CN115030353A (en) | 2022-06-08 | 2022-06-08 | Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange |
| PCT/CN2022/134265 WO2023236456A1 (en) | 2022-06-08 | 2022-11-25 | Wall having functions of noise elimination, phase change cold storage, and heat transfer enhancement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640144.8A CN115030353A (en) | 2022-06-08 | 2022-06-08 | Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115030353A true CN115030353A (en) | 2022-09-09 |
Family
ID=83122240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210640144.8A Pending CN115030353A (en) | 2022-06-08 | 2022-06-08 | Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115030353A (en) |
| WO (1) | WO2023236456A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU218820U1 (en) * | 2023-01-27 | 2023-06-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" (ВГТУ) | Convective fire barrier with guide elements |
| WO2023236456A1 (en) * | 2022-06-08 | 2023-12-14 | 中国核电工程有限公司 | Wall having functions of noise elimination, phase change cold storage, and heat transfer enhancement |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090001185A1 (en) * | 2007-06-28 | 2009-01-01 | Corvid Homes | Structural wall panels and methods and systems for controlling interior climates |
| CN103453576A (en) * | 2013-08-28 | 2013-12-18 | 南京师范大学 | Passive solar radiant heating system |
| CN103940019A (en) * | 2014-05-09 | 2014-07-23 | 广西钧富凰地源热泵有限公司 | Air conditioner system and heat pump equipment |
| CN104314195A (en) * | 2014-09-30 | 2015-01-28 | 浙江大学 | Wall based on heat pipe and heating system |
| CN106813333A (en) * | 2017-01-09 | 2017-06-09 | 湖南大学 | Double pipe laying air through tunnels couple air-conditioning system with phase-changing energy-storing |
| CN107313520A (en) * | 2017-06-24 | 2017-11-03 | 江西理工大学 | A kind of double-deck phase-change accumulation energy air-conditioning system based on Ventilating wall |
| CN209623006U (en) * | 2019-02-26 | 2019-11-12 | 长安大学 | A kind of embedded tubular radiation cooling phase-changing wall |
| US20200408471A1 (en) * | 2017-06-13 | 2020-12-31 | South China University Of Technology | Phase-change energy-storage structure for building insulation |
| 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 |
| CN114543211A (en) * | 2022-01-28 | 2022-05-27 | 扬州大学 | Double-effect energy storage type air treatment equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791555A (en) * | 2012-10-31 | 2014-05-14 | 中国建筑科学研究院 | Combined type ceiling radiant plate |
| CN209145057U (en) * | 2018-08-18 | 2019-07-23 | 西南科技大学 | A kind of solar energy room temperature adjusting wall |
| CN210316096U (en) * | 2019-07-22 | 2020-04-14 | 中国建筑第七工程局有限公司 | Sound insulation and shock absorption structure of building wall |
| CN112262686B (en) * | 2020-09-17 | 2021-10-26 | 西安科技大学 | Active and passive solar heat storage and release wall |
| CN115030353A (en) * | 2022-06-08 | 2022-09-09 | 中国核电工程有限公司 | Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange |
-
2022
- 2022-06-08 CN CN202210640144.8A patent/CN115030353A/en active Pending
- 2022-11-25 WO PCT/CN2022/134265 patent/WO2023236456A1/en unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090001185A1 (en) * | 2007-06-28 | 2009-01-01 | Corvid Homes | Structural wall panels and methods and systems for controlling interior climates |
| CN103453576A (en) * | 2013-08-28 | 2013-12-18 | 南京师范大学 | Passive solar radiant heating system |
| CN103940019A (en) * | 2014-05-09 | 2014-07-23 | 广西钧富凰地源热泵有限公司 | Air conditioner system and heat pump equipment |
| CN104314195A (en) * | 2014-09-30 | 2015-01-28 | 浙江大学 | Wall based on heat pipe and heating system |
| CN106813333A (en) * | 2017-01-09 | 2017-06-09 | 湖南大学 | Double pipe laying air through tunnels couple air-conditioning system with phase-changing energy-storing |
| US20200408471A1 (en) * | 2017-06-13 | 2020-12-31 | South China University Of Technology | Phase-change energy-storage structure for building insulation |
| CN107313520A (en) * | 2017-06-24 | 2017-11-03 | 江西理工大学 | A kind of double-deck phase-change accumulation energy air-conditioning system based on Ventilating wall |
| CN209623006U (en) * | 2019-02-26 | 2019-11-12 | 长安大学 | A kind of embedded tubular radiation cooling phase-changing wall |
| 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 |
| CN114543211A (en) * | 2022-01-28 | 2022-05-27 | 扬州大学 | Double-effect energy storage type air treatment equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236456A1 (en) * | 2022-06-08 | 2023-12-14 | 中国核电工程有限公司 | Wall having functions of noise elimination, phase change cold storage, and heat transfer enhancement |
| RU218820U1 (en) * | 2023-01-27 | 2023-06-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" (ВГТУ) | Convective fire barrier with guide elements |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023236456A1 (en) | 2023-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111154457B (en) | Inorganic composite phase change energy storage material and preparation method thereof | |
| CN106052157A (en) | Solar heat collecting, heating and heat insulating curtain wall and roof and solar air conditioner system | |
| CN110068043A (en) | A kind of functional heat supply wall of seasonal form accumulation of heat | |
| WO2022111371A1 (en) | Passive cold storage heat exchanger | |
| CN115030353A (en) | Wall with functions of noise elimination, phase change cold accumulation and enhanced heat exchange | |
| CN209482529U (en) | A kind of water circulation outer wall structure of building and temperature regulation system | |
| CN102777730A (en) | Directly-buried steam pipeline for long-distance transportation | |
| CN206247662U (en) | Solar energy heating warm keeping curtain wall and roofing and solar air-conditioner system | |
| CN208917870U (en) | A kind of extremely frigid zones subway station insulation construction | |
| CN205448286U (en) | Air source heat pump's hot -water tank | |
| CN106152348A (en) | A kind of air conditioning system for the underground space | |
| CN211973869U (en) | Heat preservation and insulation node of steel frame assembly type ultra-low energy consumption building door and window | |
| CN206018152U (en) | A kind of high prefabricated direct-buried thermal insulation pipe of structural strength | |
| CN210086550U (en) | Integrated non-light-transmitting wall thermal activation energy-saving building system | |
| CN209623006U (en) | A kind of embedded tubular radiation cooling phase-changing wall | |
| JP3142735U (en) | Heat pump type air conditioner | |
| CN111156699A (en) | Air source heat pump water heater with phase change material for heat storage | |
| Rucevskis et al. | Numerical Study of Application of PCM for a Passive Thermal Energy Storage System for Space Cooling in Residential Buildings | |
| CN207591139U (en) | Radiate refrigeration mode double-side fireproof wall | |
| CN202812659U (en) | Novel long-distance directly-buried steam pipeline | |
| CN207378299U (en) | Suitable for the indoor drainage pipe structure of Passive low-energy building | |
| CN201633249U (en) | Fire-resistant and heat-insulating covering material | |
| CN206918545U (en) | Air-conditioning duct insulating tube | |
| CN211668023U (en) | Air source heat pump water heater with phase change material for heat storage | |
| CN206039414U (en) | Main frame cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |