CN111578361A - Interlayer ventilation type phase change heat storage structure and laying method thereof - Google Patents
Interlayer ventilation type phase change heat storage structure and laying method thereof Download PDFInfo
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- CN111578361A CN111578361A CN202010383587.4A CN202010383587A CN111578361A CN 111578361 A CN111578361 A CN 111578361A CN 202010383587 A CN202010383587 A CN 202010383587A CN 111578361 A CN111578361 A CN 111578361A
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- 238000005338 heat storage Methods 0.000 title claims abstract description 54
- 238000009423 ventilation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000011229 interlayer Substances 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 38
- 239000012782 phase change material Substances 0.000 claims description 27
- 239000004677 Nylon Substances 0.000 claims description 15
- 229920001778 nylon Polymers 0.000 claims description 15
- 238000004806 packaging method and process Methods 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000003915 air pollution Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
-
- 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
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- 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
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/14—Solar energy
-
- 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
- F24F2005/0032—Systems storing energy during the night
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Acoustics & Sound (AREA)
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Abstract
The invention discloses a sandwich ventilation type phase change heat storage structure and a laying method thereof, wherein the sandwich ventilation type phase change heat storage structure consists of a plurality of unit structures, each unit structure comprises a galvanized thin steel plate (6) with a phase change heat storage layer (3), a heat insulation layer (5) with a reflecting film (4) and an air channel (1); the reflecting film (4) is laid on the heat insulation layer (5), the phase change heat storage layer (3) is laid on the galvanized thin steel plate (6), and the galvanized thin steel plate (6) with the phase change heat storage layer (3) is fixed on the keel (2). The invention can improve the heat storage capacity of the whole structure, reduce the weight and the volume of the structure and reduce the occupancy rate of indoor space; the air channel can be simultaneously utilized in winter and summer, so that the waste of resources caused by the fact that the phase change heat storage structure only serves a single season is avoided.
Description
Technical Field
The invention relates to the technical field of heating and refrigeration in the fields of building energy conservation and renewable energy sources, in particular to a ventilation type phase-change heat storage structure and a laying method thereof.
Background
At present, air pollution is serious in winter, scattered coal is used for heating villages and towns, the important reason for air pollution in winter is that how to popularize clean heating is achieved, the energy using mode of farmers is changed, and heating by using clean energy is the key point. Solar energy is used as a clean energy source, and has abundant resources in most areas in the north of China, and the annual irradiation dose is more than 4200 MJ/square meter. The problem of unmatched supply and demand in time existing in solar heating needs to be solved by combining a heat storage technology.
The phase-change material is a substance which stores or releases a large amount of heat energy through self phase change, the temperature of the material is almost kept unchanged before the phase change is completed during the phase change, a wide temperature platform is formed, and the phase-change material has the advantage of large heat storage capacity. The phase-change material can be combined with the building envelope to form a building comprehensive heat storage system. The system has the characteristic of being coupled with an indoor hot area, the phase-change material has large contact area with the indoor, the heat exchange effect is good, and the effect of stabilizing the room temperature can be achieved.
Chinese patent 201811068101.7 discloses a shaped phase change and embedded pipe type ventilated roof, and provides the thickness of the phase change layer, the phase change temperature range and the ventilation strategy which are suitable for different areas; this roofing is including the roof covering that has phase change material layer and embedded tubular air pipe simultaneously to and air intake and air outlet, wherein, the air intake is provided with electronic blast gate and fan, and the fan is used for carrying outdoor air to air pipe, and electronic blast gate is used for switching outdoor air and embedded tubular air pipe intercommunication and the state of non-intercommunication. The shape-stabilized phase change material used in the invention has less heat storage capacity, thus causing the increase of the volume and the weight of the structure and occupying more building space.
Disclosure of Invention
The invention aims to provide an interlayer ventilation type phase change heat storage structure and a laying method thereof, which utilize an air channel to improve the heat storage or heat release rate of a phase change material, increase the heat preservation and heat insulation performance of an enclosure structure, provide a solution for realizing solar heating of a building in winter, and simultaneously realize radiation cooling of the building in summer.
The invention relates to a sandwich ventilation type phase change heat storage structure which comprises a plurality of unit structures, wherein each unit structure comprises a galvanized thin steel plate 6 with a phase change heat storage layer 3, a heat insulation layer 5 with a reflection film 4 and an air channel 1; wherein: the reflecting film 4 is laid on the heat preservation layer 5, the phase change heat storage layer 3 is laid on the galvanized thin steel plate 6, and the galvanized thin steel plate 6 with the phase change heat storage layer 3 is fixed on the keel 2.
The air channel 1 is a ventilation channel arranged in parallel.
The phase-change heat storage layer 3 is formed by tightly sticking a nylon thin bag packaged with a phase-change material on the galvanized thin steel sheet 6 by glue.
The phase-change temperature range of the phase-change material adopted by the phase-change heat storage layer 3 is 18-20 ℃.
The thickness of the galvanized thin steel sheet 6 is 0.8 mm-1 mm.
The width of the keel 2 is 60 mm-80 mm.
The width of the air channel 1 is not wider than 250 mm.
The invention discloses a laying method of an interlayer ventilation type phase change heat storage structure, which comprises the following steps:
packaging the phase change material in a nylon thin bag, packaging by using the nylon thin bag, and packaging into a long strip shape by using a heat packaging machine; then, tightly pasting the nylon thin bag packaged with the phase-change material on the galvanized thin steel sheet 6 by glue to form a phase-change heat storage layer 3; the wall body and the roof are provided with heat insulation layers 5, and the keel 2 is fixed outside the reflecting film 4; the air channel 1 is formed by a heat insulating layer 5 with a reflecting film 4 and a galvanized thin steel plate 6 with a phase change heat storage layer 3.
The thickness of the nylon thin bag used for packaging is 0.09 mm-0.12 mm.
Compared with the prior art, the invention has the following advantages:
1. the heat storage capacity of the whole structure is improved, the weight and the volume of the structure are reduced, and the occupancy rate of indoor space is reduced;
2. the air channel can improve the heat preservation performance of the building envelope structure, the phase change temperature of the phase change material is low, the phase change material can be used in winter and summer, and the problem that the phase change heat storage structure only serves a single season to cause resource waste is avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of a cell configuration of a sandwich ventilated phase change thermal storage structure of the present invention;
FIG. 2 is a schematic view of a unit-structured air duct of a sandwich ventilated phase-change thermal storage structure of the present invention;
fig. 3 is a schematic diagram of an embodiment of a sandwich ventilated phase-change thermal storage structure of the present invention.
Reference numerals:
1. the air channel, 2, fossil fragments, 3, phase transition heat accumulation layer, 4, reflectance coating, 5, heat preservation, 6, galvanized sheet steel.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic cross-sectional view of a unit structure of a sandwich ventilation type phase-change heat storage structure according to the present invention;
the unit structure of the interlayer ventilation type phase change heat storage structure consists of a galvanized steel sheet 6, a phase change heat storage layer 3, a keel 2, a reflecting film 4 and a heat insulation layer 5. The reflective film 4 is laid on the heat preservation layer 5, and the reflective film is made of a material with high reflectivity, so that radiation heat dissipation of the phase change heat storage layer 3 to one side of the heat preservation layer 5 is reduced. The phase change heat storage layer 3 is arranged on the galvanized thin steel sheet 6, the galvanized thin steel sheet 6 with the phase change heat storage layer 3 is fixed on the keel 2, and the keel 2 is fixed outside the reflecting film 4. The heat insulating layer 5 with the reflecting film 4 and the galvanized thin steel plate 6 with the phase change heat storage layer 3 form an air channel 1. And sealing the gaps among the keel 2, the galvanized thin steel sheet 6 and the reflecting film 4 by using a sealant to prevent air leakage of the air channel 1 in the air supply process and wind pressure loss.
Fig. 2 is a schematic diagram of a unit structure air duct of the sandwich ventilation type phase change heat storage structure according to the present invention. Is a ventilation mode of one unit construction. The unit configuration has two channels and a break point, air entering from one channel side and returning from the other.
Fig. 3 is a schematic view of an embodiment of the sandwich ventilation type phase change heat storage structure according to the present invention. The interlayer ventilation type heat storage structure in the room is composed of a plurality of unit structures, and the unit structures are arranged in parallel to form an indoor air interlayer and an outdoor air interlayer, so that the heat resistance of the enclosure structure is increased. The paving mode can be simultaneously and uniformly paved to form a group of ventilation channels connected in parallel. The paving mode is as follows: firstly, phase change materials are packaged in a nylon thin bag, the phase change temperature of the phase change materials is 18-20 ℃, the thickness of the nylon thin bag used for packaging is 0.09-0.12 mm, and the nylon thin bag is packaged into a strip shape by a heat packaging machine. And then the nylon thin bag packaged with the phase-change material is tightly stuck on the galvanized thin steel sheet 6 by glue to form the phase-change heat storage layer 3. The wall body and the roof are provided with a heat preservation layer 5, the keel 2 is fixed outside the heat preservation layer 5 paved with the reflecting film 4, and then the galvanized thin steel plate 6 with the phase change heat storage layer 3 is fixed on the keel 2.
The working process of the invention is as follows:
heating in winter: the solar air heat collector has the advantages of high heat collection efficiency and low manufacturing cost, and can collect hot air by the solar air heat collector, respectively send the hot air to one side of each unit structure air channel in daytime and then send the hot air back to the solar air heat collector from the other side. The phase-change material is heated by hot air to melt and store heat, and meanwhile, the indoor temperature is maintained. At night, the phase-change material is solidified to release heat, and the indoor temperature is continuously maintained, so that the utilization of solar energy is realized.
Cooling in summer: in daytime, when the indoor temperature is higher than the phase transition temperature of the phase transition material, the phase transition material is melted by the heat transfer of the galvanized sheet steel 6, and the function of stabilizing the room temperature is achieved. At night, natural wind with low outdoor temperature is sent into the air channel 1, the phase-change material is solidified and released heat when meeting condensation, and heat accumulated in the phase-change material in the daytime is replaced out of the room, so that the aim of cooling in summer is fulfilled.
The invention adopts a macroscopic packaging mode to increase the packaging amount of the phase change heat storage material, improve the heat storage amount of the whole structure, simultaneously reduce the weight and the volume of the structure and reduce the occupancy rate of indoor space; the phase-change material is packaged in the nylon thin bag and is adhered to the galvanized thin steel sheet, so that heat transfer resistance with the indoor space can be reduced, and the heat exchange rate between the phase-change material and the indoor space is enhanced; the phase change temperature of the selected phase change material is low, so that the condition of overheating indoors in summer is avoided. Meanwhile, cold air or natural air is introduced into the air channel in summer, so that the purpose of indoor cooling can be achieved, and the problem that resources are wasted because the phase change heat storage structure only serves a single season is avoided.
Claims (9)
1. A sandwich ventilation type phase change heat storage structure is characterized by comprising a plurality of unit structures, wherein each unit structure comprises a galvanized thin steel plate (6) with a phase change heat storage layer (3), a heat insulation layer (5) with a reflection film (4) and an air channel (1); wherein: the reflecting film (4) is laid on the heat insulation layer (5), the phase change heat storage layer (3) is laid on the galvanized thin steel plate (6), and the galvanized thin steel plate (6) with the phase change heat storage layer (3) is fixed on the keel (2).
2. The sandwich ventilated phase-change thermal storage structure according to claim 1, wherein the air channels (1) are ventilation channels arranged in parallel.
3. The sandwich ventilated phase-change heat storage structure according to claim 1, wherein the phase-change heat storage layer (3) is formed by tightly adhering nylon thin bags filled with the phase-change material to the galvanized steel sheet (6) by glue.
4. The sandwich ventilated phase-change heat storage structure according to claim 1, wherein the phase-change material used in the phase-change heat storage layer (3) has a phase-change temperature ranging from 18 ℃ to 20 ℃.
5. The sandwich ventilated phase-change heat storage structure according to claim 1, wherein the galvanized steel sheet (6) has a thickness of 0.8mm to 1 mm.
6. The sandwich ventilated phase-change thermal storage structure according to claim 5, wherein the width of the keel (2) is 60mm to 80 mm.
7. The sandwich ventilated phase-change thermal storage structure according to claim 5, wherein the width of the air channel (1) is not wider than 250 mm.
8. A laying method of an interlayer ventilation type phase change heat storage structure is characterized by comprising the following steps:
packaging the phase change material in a nylon thin bag, packaging by using the nylon thin bag, and packaging into a long strip shape by using a heat packaging machine; then, tightly pasting the nylon thin bag packaged with the phase-change material on the galvanized thin steel sheet (6) by glue to form a phase-change heat storage layer (3); the wall body and the roof are provided with heat insulation layers (5), and the keel (2) is fixed outside the reflecting film (4); the air channel (1) is formed by a heat-insulating layer (5) with a reflecting film (4) and a galvanized thin steel sheet (6) with a phase-change heat storage layer (3).
9. The method for laying a sandwich ventilated phase-change thermal storage structure according to claim 5, wherein the nylon thin bag used for packaging has a thickness of 0.09mm to 0.12 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010383587.4A CN111578361A (en) | 2020-05-08 | 2020-05-08 | Interlayer ventilation type phase change heat storage structure and laying method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010383587.4A CN111578361A (en) | 2020-05-08 | 2020-05-08 | Interlayer ventilation type phase change heat storage structure and laying method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880074A (en) * | 2021-01-11 | 2021-06-01 | 湖南大学 | Active cooling and solar hybrid ventilation and photovoltaic coupling integrated system based on phase change energy storage and intelligent control |
| WO2024033956A1 (en) | 2022-08-12 | 2024-02-15 | Universita' Degli Studi Di Ferrara | Thermal barrier for ventilated roofs |
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| JP2004176983A (en) * | 2002-11-26 | 2004-06-24 | Sekisui Chem Co Ltd | Floor structure |
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| CN104674979A (en) * | 2015-01-18 | 2015-06-03 | 北京工业大学 | Phase change heat storage lightweight wall-based high-performance solar air heating system |
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| CN110344517A (en) * | 2019-07-02 | 2019-10-18 | 南华大学 | The multi-layer walls with cavity of built-in phase transformation packing material |
| CN110374291A (en) * | 2019-07-10 | 2019-10-25 | 天津大学 | Spliced bilayer phase-transition heat-storage cold-storage floor |
| CN212691921U (en) * | 2020-05-08 | 2021-03-12 | 天津大学 | Interlayer ventilation type phase change heat storage structure |
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2020
- 2020-05-08 CN CN202010383587.4A patent/CN111578361A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004176983A (en) * | 2002-11-26 | 2004-06-24 | Sekisui Chem Co Ltd | Floor structure |
| CN101280935A (en) * | 2008-05-09 | 2008-10-08 | 清华大学 | Dry-type phase-change thermal storage floor heating terminal device |
| CN104674979A (en) * | 2015-01-18 | 2015-06-03 | 北京工业大学 | Phase change heat storage lightweight wall-based high-performance solar air heating system |
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| CN110374291A (en) * | 2019-07-10 | 2019-10-25 | 天津大学 | Spliced bilayer phase-transition heat-storage cold-storage floor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880074A (en) * | 2021-01-11 | 2021-06-01 | 湖南大学 | Active cooling and solar hybrid ventilation and photovoltaic coupling integrated system based on phase change energy storage and intelligent control |
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| WO2024033956A1 (en) | 2022-08-12 | 2024-02-15 | Universita' Degli Studi Di Ferrara | Thermal barrier for ventilated roofs |
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