CN110762599A - Light phase-change heat storage floor heating and design method thereof - Google Patents
Light phase-change heat storage floor heating and design method thereof Download PDFInfo
- Publication number
- CN110762599A CN110762599A CN201910403081.2A CN201910403081A CN110762599A CN 110762599 A CN110762599 A CN 110762599A CN 201910403081 A CN201910403081 A CN 201910403081A CN 110762599 A CN110762599 A CN 110762599A
- Authority
- CN
- China
- Prior art keywords
- heat
- floor heating
- heat storage
- phase
- floor
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 78
- 238000005338 heat storage Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000011232 storage material Substances 0.000 claims abstract description 25
- 238000004321 preservation Methods 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 239000002937 thermal insulation foam Substances 0.000 claims 2
- 238000009825 accumulation Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 26
- 239000000463 material Substances 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F24D19/00—Details
- F24D19/02—Arrangement of mountings or supports for radiators
- F24D19/0203—Types of supporting means
- F24D19/0213—Floor mounted supporting means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
Abstract
The invention relates to a light phase-change heat storage floor heating and a design method thereof. Its characterized in that should warm up the structure and include: the bottom layer is a heat preservation layer (1), a pipe clamping module (2) is arranged above the heat preservation layer (1), the floor heating coil (3) is wound between clamping teeth above the pipe clamping module (2), phase change heat storage materials (4) are filled between the floor heating coil (3) and the clamping teeth of the pipe clamping module, and the top layer covers a floor (5). The novel floor heating system solves the problems of poor heat storage and poor heat conductivity of the traditional floor heating system, can prolong the continuous heating time by over 100 percent compared with the common floor heating system under the same experimental heating working condition without additional energy consumption, and has the advantages of simple process, low raw material cost, wide source and better economic benefit and social benefit.
Description
Technical Field
The invention relates to a floor heating, in particular to a light phase-change heat storage floor heating and a design method thereof.
Background
With the rapid development of economy in China, the living standard of people is continuously improved, the living conditions are improved, meanwhile, the building energy consumption is rapidly increased, and the proportion of the building energy consumption to the energy consumption of the whole society is about 30%, so that the tension situation of energy supply is aggravated. In building energy consumption, the energy for heating accounts for about 45 percent, and the energy-saving heat-supply device is a key field of building energy conservation. In order to reduce building energy consumption, both energy saving and source opening are needed, so related scientific researchers in China are working on expanding the application range of renewable energy sources in buildings. Solar energy is an inexhaustible clean energy and one of important energy sources which can be relied on by human beings for a long time, and the solar heat energy is utilized to supply heat to buildings so as to obtain very good energy-saving and environmental benefits, and the solar energy is always paid attention to by countries in the world for a long time. In more than ten years, the technology of large-scale utilization of solar heat supply and heating in developed countries in Europe and North America is rapidly developed, a large number of regional heat supply and heating projects utilizing solar energy are built, and corresponding technical guides and design manuals are compiled and published. Solar energy in many cold regions in China is very abundant, and in order to fully utilize the natural energy, the technical specifications of solar heating and heating engineering (GB 50495-2009) are jointly issued by the Ministry of construction and national quality supervision, inspection and quarantine of China in 3 months and 19 days in 2009 and are implemented in 8 months and 1 day in 2009.
Solar energy is an unstable heat source and can be affected by cloudy, rainy, and snowy weather. The supply of solar energy varies both quantitatively and temporally. The solar energy can be obtained only in the daytime, particularly in direct sunshine, and can be obtained only in sunny days, and the energy in life is concentrated in the morning and at night compared with the daytime. If the solar energy can be stored temporarily and recycled when necessary, the convenience of energy can be improved, and the application range can be expanded. Therefore, aiming at the situation, the invention designs the phase-change heat storage floor heating by combining the novel solid phase-change material, and the phase-change heat storage floor heating can transfer the solar heat in the daytime to the heating at night. If the heat supply quantity changes and exceeds the capacity of the heat storage device, or the heat supply temperature is lower than the requirement of the user terminal, an auxiliary heat source can be arranged for supplement. In winter, the heat collection efficiency and the heat collection temperature are easy to decrease compared with summer, so that a large-scale solar heat utilization system generally adopts a boiler or a heat pump as an auxiliary heat source.
At present, in the regions of northwest Sichuan, Tibet, Xinjiang and the like in China, the temperature difference between day and night is very large, the solar radiation intensity is high in the daytime, and the temperature is lower at night. In order to more reasonably utilize solar energy and improve the utilization efficiency of solar energy resources, the application of the heat storage technology in the buildings in the regions is increasing. The combined solar heating mode adopted in the current stage mostly utilizes a water tank heat storage mode to meet the requirement of heating at night. For example, the public publication No. CN201910091235 provides a heating scheme using a water tank for heat storage, but during heating at night, a certain amount of traditional energy is often consumed for maintaining the water temperature in a certain interval, and power is also required for conveying circulating water, so that zero-energy-consumption heating at night cannot be really realized, and if the system is used in an alpine region, the risk of water circulation stagnation and even pipe burst caused by water freezing due to insufficient heat preservation measures also exists. Also, for example, CN201720323159 uses a water tank to store heat, and feeds hot water to a coil pipe of each room to heat in the form of hot air, but this type of heat storage heating system also has a risk of freezing water, and cannot realize zero-energy-consumption heating at night. In order to better provide a heating strategy for alpine regions, people are actively exploring a heating method for building structure heat storage to replace the traditional water tank heat storage mode. For example, publication No. CN201510524099 provides a heating strategy for wall heat storage, which utilizes a heat source to heat and store heat in a wall manner to heat rooms at night and can realize zero-energy-consumption heating at night, but because paraffin is used as a wall phase-change heat storage material, the invention often faces technical obstacles of material sealing and difficulties in construction in practical application.
Disclosure of Invention
Aiming at the problems, the invention designs a light phase-change heat storage floor heating.
The basic operation thought of the system is as follows: during daytime, heat circulating water heated by a heating device such as a solar heat collector can be introduced into the floor heating coil (3) to heat the phase-change heat storage material (4), one part of heat is directly led into the floor (5) through the phase-change heat storage material to be used for heating a room immediately, and the other part of heat is stored in the phase-change heat storage material (4) in a phase-change latent heat mode. At night, circulating water is not introduced any more, and the heat stored in the daytime by the phase change heat storage material (4) is continuously used for indoor continuous heating. By means of the efficient heat storage and release capacity of the phase change heat storage material, zero-energy-consumption heating at night of a room can be basically realized, and therefore the purposes of energy conservation and emission reduction are achieved.
Wherein the heat-insulating layer (1) is an extruded polystyrene heat-insulating foam board.
The upper surface of the foam board is tightly attached with an aluminum foil reflecting layer.
Wherein the phase change heat storage material (4) is a mixture of paraffin and 80-mesh expanded graphite.
The mass ratio of the paraffin and the 80-mesh expanded graphite is respectively as follows: 95 percent and 5 percent.
The phase change heat storage material (4) is filled on the support framework module wound with the floor heating coil (3).
The floor heating coil (3) is clamped and wound between the pipe clamping teeth on the support framework module.
The support framework module is characterized in that the surface of the support framework module is provided with two clamping pipe teeth of long teeth and short teeth which are arranged in a staggered mode.
The distance between the long teeth and the short teeth is equal to the outer diameter of the floor heating coil (3).
The heat-insulating layer is an extruded polystyrene heat-insulating foam board.
The filling height of the phase change heat storage material (4) on the support framework module is equal to the height of the long teeth.
The invention has the advantages that:
1. the phase change heat storage technology is adopted to realize the poor time utilization of the solar energy, and obvious energy-saving benefit can be generated.
2. The floor heating system can not only combine solar energy, but also well combine with other clean energy sources such as geothermal energy, wind energy and the like, has a simple structure, and can be used in various energy structures.
3. The system applying the floor heating system does not need to be provided with a large-scale heat storage water tank, and the investment is saved.
4. The phase change heat storage material has wide source, low price, stable physical and chemical properties and large phase change latent heat, and can ensure that a heating system applying the material really realizes zero-energy consumption heating at night.
Drawings
Fig. 1 is a schematic structural diagram of a phase-change heat-storage floor heating layer.
In the figure: 1, insulating layer; 2 supporting the skeleton module; 3, a floor heating coil pipe; 4 phase change heat storage material; 5, floor.
Detailed Description
The invention is further illustrated, but not limited, by the following examples and figures.
The invention relates to a light phase-change heat storage floor heating and a design method thereof, which are designed and invented aiming at the climate characteristics of cold climate and long low-temperature weather period in plateau areas. During daytime, heat circulating water heated by a heating device such as a solar heat collector can be introduced into the floor heating coil (3) to heat the phase-change heat storage material (4), one part of heat is directly led into the floor (5) through the phase-change heat storage material to be used for heating a room immediately, and the other part of heat is stored in the phase-change heat storage material (4) in a phase-change latent heat mode. At night, circulating water is not introduced any more, and the heat stored in the daytime by the phase change heat storage material (4) is continuously used for indoor continuous heating. By means of the efficient heat storage and release capacity of the phase change heat storage material, zero-energy-consumption heating at night of a room can be basically realized, and therefore the purposes of energy conservation and emission reduction are achieved.
Further, the source for heating the hot circulating water can be solar energy or geothermal energy with higher temperature.
Further, if the floor heating system is used in a heating system of a large building, an auxiliary heater, such as a large boiler or a heat pump, may be added.
Further, the filling amount of the phase change heat storage material should be determined according to the load of the room.
Further, if the room has a high requirement on the air preheating speed, graphene can be added into the phase change heat storage material, and the mass ratio of the paraffin to the mass ratio of 80-mesh expanded graphite to the mass ratio of graphene is as follows: 94%, 5% and 1%.
Further, the floor can be a wooden floor, a tile floor or a solid wood floor.
Furthermore, the floor heating coil pipe can be coiled in a shape of a circle, a double-circle shape and a snake shape, and the specific coiling mode is determined by the room space characteristics.
Further, if the floor heating system is applied to an area with insufficient solar energy resources, the solar heat collector can be used as a heat source, and a wall-mounted furnace or electric heating can be additionally arranged for heat storage and heating of the ground.
Furthermore, if the floor heating system is applied to areas with electricity price difference, the heat storage material can be stored with heat while the low-price electric heating circulating water is used for heating rooms at night, and the electricity price is recovered to a high level in the daytime, so that the electricity consumption is not needed for heating, or the water heating is directly changed into the electric heating, and the energy utilization efficiency is improved.
Furthermore, the material used by the floor heating can be applied to various occasions, especially when being applied to heating systems in areas which are hot in winter and summer and rich in solar energy resources, such as Xinjiang, Gansu and other provinces, the material can be applied to the floor heating in winter for heating, and can also be used in a heat-preservation water tank when the temperature in summer is high, and hot water generated by solar energy can be stored in the heat-preservation water tank and used as domestic water. In addition, the high latent heat composite phase change heat storage material used by the system can also be used in systems of wall heat storage, roof heat storage and pipeline heat storage.
The present invention will be described in detail with reference to specific examples.
For example, when the floor heating system is applied to ordinary residential houses in high-altitude areas, if the houses are short bungalow houses, the solar heat collector can be arranged on the roof, the pipe sections exposed to the outside are reduced as much as possible, sufficient heat preservation measures must be carried out on the pipe sections exposed to the outside, and a small-sized gas wall-mounted furnace or an electric water heater can be installed indoors and connected with the solar heat collector to serve as an auxiliary heat source. The heat of the thermal circulating water in daytime is released to the greatest extent indoors through the floor heating coil, one part of the heat is used for instant heating, and the other part of the heat is stored in the phase-change heat storage material. At night, the supply of circulating water is stopped, and the heat stored by the floor heating continues to supply heat to the indoor space. If the house is a building, the application of the system is relatively limited. But still can use for some house types facing the sun, its main application difference lies in that its solar energy collection pipe can design in air conditioner position department, replaces traditional shutter, not only beautifully, but also can high-efficiently utilize solar energy.
As another example, the floor heating system is applied to a large public building in an plateau area, such as a train station hall. Because like the roofing space such as station, airport terminal building big, can install solar collector at the roofing, the solar collector in this system is preferred with selecting plate collector this moment, and auxiliary heater can use large-scale boiler or air source heat pump, and plate collector also can pin the heat in public space when the thermal-arrest, and hot water lets in the floor below, with partly heat release, another part heat storage, also can be indoor continuous high-efficient heating night under the condition that does not have energy resource consumption.
The foregoing is merely exemplary of the preferred embodiments of the present invention, and details which have not been set forth are within the ordinary skill in the art. The scope of the present invention is defined by the claims, and any equivalent changes, such as changes in the proportion of the phase change heat storage material, based on the technical teaching of the present invention are also within the scope of the present invention.
Claims (7)
1. The utility model provides a light phase transition heat accumulation ground warms up and design method thereof, its characterized in that this ground warms up the structure and includes: the bottom layer is heat preservation (1), is provided with support skeleton module (2) above heat preservation (1), and ground heating coil (3) coil in support skeleton module (2) top, and ground heating coil (3) top is filled with phase change heat storage material (4) and is covered, and the superiors cover floor (5).
2. The lightweight phase-change heat-storage floor heating and design method thereof according to claim 1, wherein the heat-insulation layer is an extruded polystyrene heat-insulation foam board.
3. The extruded polystyrene insulation foam board of claim 2, wherein the upper surface of the foam board is closely attached with a thin reflective layer of aluminum foil.
4. The lightweight phase-change heat-storage floor heating system and the design method thereof as claimed in claim 1, wherein the support skeleton module has long teeth and short teeth on the surface thereof, and the long teeth and the short teeth are alternately arranged in sequence.
5. The tube-clamping tooth according to claim 4, characterized in that the tooth spacing is equal to the outer diameter of the floor heating coil.
6. The lightweight solar phase change thermal storage underfloor heating system of claim 1, wherein the phase change thermal storage material is a mixture of paraffin and 80 mesh expanded graphite.
7. The mixture of paraffin and expanded graphite according to claim 6, wherein the mixture comprises the following components in parts by mass: expanded graphite = 95: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403081.2A CN110762599A (en) | 2019-05-15 | 2019-05-15 | Light phase-change heat storage floor heating and design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403081.2A CN110762599A (en) | 2019-05-15 | 2019-05-15 | Light phase-change heat storage floor heating and design method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110762599A true CN110762599A (en) | 2020-02-07 |
Family
ID=69328656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910403081.2A Pending CN110762599A (en) | 2019-05-15 | 2019-05-15 | Light phase-change heat storage floor heating and design method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110762599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608057A (en) * | 2022-03-29 | 2022-06-10 | 中国计量大学 | Frequency conversion type household floor heating system based on porous medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280934A (en) * | 2008-05-09 | 2008-10-08 | 清华大学 | Solar phase-change floor direct supply heating system and control method thereof |
| CN102269443A (en) * | 2011-07-08 | 2011-12-07 | 华北电力大学 | Indoor geothermal heating structure with capillary network and phase change thermal storage materials |
| CN203215849U (en) * | 2013-03-22 | 2013-09-25 | 常州盛来太阳能科技有限公司 | Household central solar heating system |
| CN103528124A (en) * | 2013-11-08 | 2014-01-22 | 西南科技大学 | Solar heat-storage heating system |
| KR20160011996A (en) * | 2014-07-23 | 2016-02-02 | 주식회사 이즈원산업 | A floor board having phase change material |
| CN205037414U (en) * | 2015-10-13 | 2016-02-17 | 天津城建大学 | Phase -change thermal type solar energy low temperature hot water radiation heating floor |
| JP2017133713A (en) * | 2016-01-25 | 2017-08-03 | 学校法人早稲田大学 | Heat storage body and air conditioning system using the same |
| JP2017155979A (en) * | 2016-02-29 | 2017-09-07 | 住商メタレックス株式会社 | Hot water mat for heat storage type floor heating |
| CN206771479U (en) * | 2017-03-30 | 2017-12-19 | 湘潭大学 | A kind of solar heat-preservation formula heating and hot-water heating system |
| CN210399119U (en) * | 2019-05-15 | 2020-04-24 | 西南科技大学 | Light phase-change heat storage floor heating system |
-
2019
- 2019-05-15 CN CN201910403081.2A patent/CN110762599A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280934A (en) * | 2008-05-09 | 2008-10-08 | 清华大学 | Solar phase-change floor direct supply heating system and control method thereof |
| CN102269443A (en) * | 2011-07-08 | 2011-12-07 | 华北电力大学 | Indoor geothermal heating structure with capillary network and phase change thermal storage materials |
| CN203215849U (en) * | 2013-03-22 | 2013-09-25 | 常州盛来太阳能科技有限公司 | Household central solar heating system |
| CN103528124A (en) * | 2013-11-08 | 2014-01-22 | 西南科技大学 | Solar heat-storage heating system |
| KR20160011996A (en) * | 2014-07-23 | 2016-02-02 | 주식회사 이즈원산업 | A floor board having phase change material |
| CN205037414U (en) * | 2015-10-13 | 2016-02-17 | 天津城建大学 | Phase -change thermal type solar energy low temperature hot water radiation heating floor |
| JP2017133713A (en) * | 2016-01-25 | 2017-08-03 | 学校法人早稲田大学 | Heat storage body and air conditioning system using the same |
| JP2017155979A (en) * | 2016-02-29 | 2017-09-07 | 住商メタレックス株式会社 | Hot water mat for heat storage type floor heating |
| CN206771479U (en) * | 2017-03-30 | 2017-12-19 | 湘潭大学 | A kind of solar heat-preservation formula heating and hot-water heating system |
| CN210399119U (en) * | 2019-05-15 | 2020-04-24 | 西南科技大学 | Light phase-change heat storage floor heating system |
Non-Patent Citations (1)
| Title |
|---|
| 张钦真;郑秋云;赵增武;李保卫;张信荣;: "石蜡型复合相变材料蓄热性能实验研究", 中国科技论文, no. 09 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608057A (en) * | 2022-03-29 | 2022-06-10 | 中国计量大学 | Frequency conversion type household floor heating system based on porous medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105914863B (en) | Adaptive general mood photo-thermal energy source optimization system and control method | |
| CN202587972U (en) | Phase-change heat accumulation circulating device suitable for sunlight greenhouse | |
| CN207350892U (en) | One kind is provided multiple forms of energy to complement each other application system | |
| CN102776959B (en) | Energy-saving solar energy combined modular split phase-changing house energy-saving system | |
| Zhai et al. | Experiences on solar heating and cooling in China | |
| WO2007000112A1 (en) | Method for producing hot water utilizing combined heat resources of solar energy and heat pump in the manner of heating water at multiple stages and accumulating energy and a device especially for carrying out the method | |
| CN106439993A (en) | Multi-energy-complementary heating and heat supply system of nearly zero energy consumption building in alpine region | |
| CN102913978B (en) | Renewable energy source and building integrated comprehensive utilization system | |
| CN101738002A (en) | Energy system of solar energy composite ground source heat pump and application thereof | |
| CN111623540A (en) | Multi-heat-source indirect PVT heat pump system suitable for building and operation method thereof | |
| CN205402901U (en) | Utilize wall inner wall heat accumulation heating system of solar energy | |
| CN105570973A (en) | Inner wall thermal heating system utilizing solar energy | |
| CN217441871U (en) | Passive building ventilation system with heat storage blocks coupled with chimney effect | |
| CN114165831A (en) | Zero-energy-consumption BIPV/T method based on photovoltaic and photo-thermal comprehensive utilization system | |
| CN204612185U (en) | A kind of solar energy and earth source heat pump composite hot-water system | |
| CN206817589U (en) | A kind of intelligent integrated heat utilization device using a variety of natural eco-friendly power sources | |
| CN210399119U (en) | Light phase-change heat storage floor heating system | |
| CN103644591B (en) | A kind of composite heat supply air conditioning system adopting solar heat-preservation pond and heat pump | |
| CN112343167A (en) | Novel solar heat accumulating type building wall with water-through wood structure | |
| CN110762599A (en) | Light phase-change heat storage floor heating and design method thereof | |
| CN106765490A (en) | Solar energy agriculture residence heating system | |
| CN115700317A (en) | Roof type photovoltaic photo-thermal energy storage system and method | |
| CN101520236A (en) | Solar ground heat-collecting system | |
| CN110762598A (en) | Novel warm braw heating system who combines solar energy | |
| CN212692158U (en) | Multi-heat-source indirect PVT heat pump system suitable for building |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200207 |
|
| WD01 | Invention patent application deemed withdrawn after publication |