CN110578960A - passive solar phase-change energy-storage heating system - Google Patents
passive solar phase-change energy-storage heating system Download PDFInfo
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- CN110578960A CN110578960A CN201910867450.3A CN201910867450A CN110578960A CN 110578960 A CN110578960 A CN 110578960A CN 201910867450 A CN201910867450 A CN 201910867450A CN 110578960 A CN110578960 A CN 110578960A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 69
- 238000004146 energy storage Methods 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 230000008859 change Effects 0.000 claims abstract description 49
- 239000012782 phase change material Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 2
- 230000001502 supplementing effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005338 heat storage Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- BDKLKNJTMLIAFE-UHFFFAOYSA-N 2-(3-fluorophenyl)-1,3-oxazole-4-carbaldehyde Chemical compound FC1=CC=CC(C=2OC=C(C=O)N=2)=C1 BDKLKNJTMLIAFE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229940087562 sodium acetate trihydrate Drugs 0.000 description 1
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
- F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
- F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
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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
-
- 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
- F24D15/04—Other domestic- or space-heating systems using heat pumps
-
- 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
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1045—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Central Heating Systems (AREA)
Abstract
The invention discloses a passive solar phase-change energy-storage heating system which comprises a heat source, a phase-change energy storage device (3), a user terminal (4) and a water pump (5), wherein the heat source is composed of a solar heat collector (1), hot water generated by the heat source is divided into two paths after flowing through the water pump (5): one path enters the user terminal (4) for indoor heating, the other path flows into the phase change energy storage device, and backwater at the user terminal and backwater of the phase change energy storage device are mixed and then flow back to the solar heat collector (1); when the phase change energy storage device (3) releases heat, hot water flows through the sixth valve (11), the third check valve (15), the water pump (5) and the seventh valve (12) to enter the user terminal (4) for heating, and return water enters the phase change energy storage device (3) again for heating through the second check valve (14) and the fourth valve (9). The invention has simple integral structure, convenient installation, high system thermal efficiency and low operating cost, and can stably and continuously provide a heating heat source.
Description
Technical Field
The invention relates to a heating system, in particular to a passive phase-change energy-storage heating system for storing solar energy.
Background
In the building energy consumption, the proportion of the heating energy consumption is the largest. At present, the common heating modes mainly include central heating, distributed heating, air-conditioning heating and the like, the heat used by the heating modes is derived from high-grade energy sources such as fossil fuel or electric energy, and when a large amount of energy is consumed, the carbon emission is increased, and the ecological problems of global warming, environmental pollution and the like are caused. Therefore, the reduction of building heating energy consumption and the adoption of renewable energy heating have very important significance for saving energy and realizing sustainable development.
Solar energy is used as the most common renewable clean energy, is applied to a heating system, can reduce the consumption of primary energy, and is beneficial to protecting the environment.
at present, the solar energy utilization form in China is single, and especially in vast rural areas, the solar energy utilization form is still mainly used for providing domestic hot water by using a solar water heater. With the increasing improvement of solar energy utilization technology, the application field of solar heat collectors gradually develops to the aspects of heating, refrigeration and the like. However, since solar energy is easily affected by time, weather, season, geographical location and other factors, and has characteristics of discontinuity, instability and the like, continuous and stable high-density energy cannot be provided, so that the application and development of solar energy are greatly restricted.
In order to continuously and stably use the solar energy for a heating system, various heat storage technologies are generally combined, wherein the phase change energy storage technology has great advantages. The phase-change energy storage technology utilizes the principle that the phase-change material can absorb or release latent heat of phase change in the phase-change process, the heat is much larger than sensible heat, and the phase-change energy storage technology has the advantages of large energy storage density, small energy storage volume, stable property and the like.
Chinese patent 201510039865.3 discloses a solar phase-change heat-storage heating system, wherein the outlet of a solar heat collector is respectively connected with a phase-change heat-storage module and the indoor through a fan, and the air for heating/storing heat is returned to the solar heat collector for heating. An auxiliary heat source is arranged on the indoor inlet pipe to ensure the heating reliability. The phase change heat storage module comprises two or more phase change heat storage devices, and each phase change heat storage device is arranged in parallel. The system comprises 7 basic operation modes, can meet the terminal heating requirements in different solar radiation, and is simple and high in economy. The air is used as a carrier of heat, the conveying and heat storage capacity is limited, and large heat loss exists.
Disclosure of Invention
The invention aims to provide a passive phase-change energy-storage heating system for storing solar energy, which is used for realizing the efficient utilization of the solar energy in winter in building heating, reducing the consumption of non-renewable energy sources, effectively solving the problems of high operating cost and the like.
The invention relates to a passive solar phase-change energy-storage heating system, which comprises a heat source consisting of a solar heat collector 1, a phase-change energy-storage device 3, a user terminal 4 and a water pump 5, wherein the input end of the solar heat collector 1 is provided with a first valve 6 and a water replenishing valve 17, the input end of an air source heat pump 2 is provided with a second valve 7 for returning water, and hot water generated by the heat source is divided into two paths after flowing through the water pump 5: one path of water flows through a seventh valve 12 arranged at an inlet pipe of the user tail end 4 and enters the user tail end 4 to supply heat indoors, the other path of water flows into the phase change energy storage device, and backwater at the user tail end and backwater of the phase change energy storage device are mixed and then flow back to the solar heat collector 1;
When the phase change energy storage device 3 releases heat, hot water flows through the sixth valve 11, the third check valve 15, the water pump 5 and the seventh valve 12 to enter the user tail end 4 for heating, and return water flows through the second check valve 14 and the fourth valve 9 to enter the phase change energy storage device 3 for heating; .
the plurality of solar heat collectors are connected in parallel to form a heat supply whole.
Compared with the prior art, the passive solar phase-change energy-storage heating system provided by the invention has the following advantages:
1. The solar energy is used as a main heating heat source, the air source heat pump is used as an auxiliary heat source to ensure the heating effect, renewable energy sources are fully utilized, the consumption of non-renewable energy sources is reduced, the problems of high energy consumption and large energy waste of a heating system of a traditional building are solved, and the solar energy-saving heat-supply system is energy-saving, environment-friendly, clean and efficient.
2. The phase change energy storage device main part is phase change material, compares traditional solar energy heat storage water tank, and its heat-retaining density is big, heat exchange efficiency is high, the heat utilization time is long, compact structure, small, heat absorption heat release temperature is invariable, easily match with the operating system, easily control, adopts the phase change material of two kinds of temperatures, has improved solar energy utilization ratio.
3. The operation mode can be switched according to actual conditions, the solar energy is guaranteed to be used for household heating at the maximum efficiency, and meanwhile, the heating stability is improved.
4. The heating system has the advantages of simple integral structure, convenience in installation, high system thermal efficiency, low operating cost and capability of stably and continuously providing a heating heat source.
5. The building is suitable for common residential buildings and public buildings, and has wide application range.
drawings
Fig. 1 is a schematic diagram of a passive solar phase-change energy-storage heating system according to an embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional view of a phase change energy storage device according to an embodiment of the invention.
Fig. 3 is a cross-sectional view of a phase change energy storage device according to an embodiment of the invention.
Reference numerals:
1. The solar heat collector comprises a solar heat collector, 2, an air source heat pump, 3, a phase change energy storage device, 4, a user terminal, 5, a water pump, 6, 7, 8, 9, 10, 11, 12, first to seventh valves (electromagnetic valves), 13, 14, 15, 16, first to fourth check valves, 17, a water replenishing valve, 18, a water mixing valve, 19, 20, 21, 22, first to fourth temperature sensors, 23, a heat storage inlet/heat extraction outlet, 24, a box body, 25, a heat preservation layer, 26, a high-melting-point phase change material, 27, a low-melting-point phase change material, 28, a fluid flow channel, 29 and a heat storage outlet/heat extraction inlet.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1-3, the passive solar phase-change energy-storage heating system of the present invention mainly includes a solar heat collector 1, an air source heat pump 2, a phase-change energy storage device 3, a user terminal 4 and a water pump 5. The solar heat collector 1 is connected with the air source heat pump 2 in parallel, the generated hot water is divided into two paths after flowing through the water pump 5, one path of hot water flows through the valve 12 and enters the user terminal 4 for indoor heating, and the other path of hot water flows through the check valve 16 and the valve 10 and enters the phase change energy storage device 3 to store redundant solar energy. The return water of the phase change energy storage device 3 flows through the third valve 8 and the first check valve 13, is mixed with the user return water and then flows back to the heat source. When the phase change energy storage device 3 releases heat, hot water flows through the sixth valve 11, the third check valve 15, the water pump 5 and the seventh valve 12 to enter the user terminal device 4 for heating, and return water enters the phase change energy storage device 3 again through the second check valve 14 and the fourth valve 9 for heating. The front end of the solar heat collector 1 is provided with a water replenishing valve 17 for replenishing water for the system. The user inlet pipe is provided with a mixing valve 18 to prevent the water supply temperature from overheating. The outlet of the solar heat collector 1, the interior of the phase change energy storage device 3, the inlet pipe of the user terminal 4 and the indoor are respectively provided with a first temperature sensor 19, a second temperature sensor 20, a third temperature sensor 21 and a fourth temperature sensor 22, and the control of the valve is realized by measuring the temperature. When the phase change energy storage device releases heat, the inlet and the outlet are connected to users through independent pipelines.
Wherein:
the solar heat collector 1 is one of a flat plate heat collector, a vacuum tube heat collector or a heat pipe heat collector. The solar heat collector 1 is arranged in a manner of facing south to north, has an included angle with the horizontal plane consistent with the geographical position of the latitude, and is arranged on the roof through a bracket. Several solar heat collectors can be connected in parallel to form a heat supply whole.
The phase change energy storage device 3 is internally provided with a plurality of annular cylindrical phase change modules which occupy 70% -80% of the total volume and are sequentially arranged in a staggered manner from inside to outside in a concentric circle manner, fluid flows in a baffling manner, the high-melting-point phase change module 26 is arranged on the inner side, and the low-melting-point phase change module 27 is arranged on the outer side. The high-melting-point phase change module 26 is made of a phase change material with the phase change temperature of 50-55 ℃, and takes sodium acetate trihydrate as a representative; the low-melting-point phase change module 27 is made of a phase change material with a phase change temperature of 40-45 ℃, and is represented by sodium sulfate decahydrate. The surface of each phase change module is provided with salient points, ripples or metal fins are added inside to increase the heat transfer coefficient of the phase change module; the phase-change material is added with expanded graphite powder to enhance the heat conductivity coefficient.
The user terminal 4 may be one or more of a geothermal coil, a fan coil, etc.
An electric tracing band is attached to an outdoor pipeline part connected with the solar heat collector 1 to prevent freezing.
The basic operation mode of the invention is as follows:
(1) solar heating mode: the valves 6 and 12 are opened, the water pump 5 runs, and solar radiation is absorbed by the solar thermal collector to heat backwater for supplying heat to users.
(2) Solar heating and heat storage mode: the valves 6, 8, 10, 12, 13 and 16 are opened, the water pump 5 is operated, and the hot water heated by the solar heat collector flows into the user heating device and the phase-change energy storage device for heat storage simultaneously.
(3) Solar heat storage mode: the valves 6, 8, 10, 13 and 16 are opened, the water pump 5 is operated, and hot water heated by the solar heat collector stores heat for the phase change energy storage device.
(4) And (3) heating mode of the phase change energy storage device: valves 9, 11, 12, 14 and 15 are opened, water pump 5 is operated, and the user is heated through the phase change energy storage device.
(5) Air source heat pump heating mode: the valves 7 and 12 are opened, the water pump 5 runs, and the water is heated and returned by the air source heat pump to supply heat for users.
The control strategy of the invention is as follows:
(1) day time:
Temperature sensor 20 measures the temperature of the water outlet of solar heat collector 1 to be less than 35 ℃: if the room temperature measured by the indoor temperature sensor 22 is less than 18 ℃, the phase change energy storage module is used for heating; if the temperature sensor 20 detects that the water supply temperature is less than 35 ℃, an air source heat pump is used for heating.
Secondly, the temperature sensor 19 measures the temperature of the outlet water of the solar heat collector 1 to be higher than 35 ℃: if the room temperature measured by the indoor temperature sensor 22 is less than 18 ℃, solar energy is used for heating; when the indoor temperature is higher than 20 ℃, solar energy is used for heating and storing heat; when the indoor temperature is higher than 24 ℃, solar energy is used for storing heat.
(2) At night:
If the room temperature measured by the indoor temperature sensor 22 is less than 18 ℃, the phase change energy storage module is used for heating; if the temperature sensor 20 detects that the water supply temperature is less than 35 ℃, heating by using an air source heat pump; and stopping heating when the indoor temperature is more than 24 ℃.
the air source heat pump 2 is used for guaranteeing indoor heating effect in extreme weather, and under the condition that solar energy is sufficient in general daytime, solar energy stored by the phase change energy storage device 3 can meet indoor heat load in one day without opening the air source heat pump 2.
Claims (9)
1. The utility model provides a passive form solar energy phase transition energy storage heating system, its characterized in that, this system includes heat source, phase transition energy memory (3), user's end (4), water pump (5) that constitute by solar collector (1), solar collector (1) input sets up first valve (6), water supplementing valve (17), the hot water that the heat source produced divides into two the tunnel behind water pump (5): one path of the return water flows through a seventh valve (12) arranged at an inlet pipe of the user tail end (4) and enters the user tail end (4) for indoor heating, the other path of the return water flows into the phase-change energy storage device, and the return water at the user tail end and the return water of the phase-change energy storage device are mixed and then flow back to the solar heat collector (1);
When the phase change energy storage device (3) releases heat, hot water flows through the sixth valve (11), the third check valve (15), the water pump (5) and the seventh valve (12) to enter the user terminal (4) for heating, and return water enters the phase change energy storage device (3) through the second check valve (14) and the fourth valve (9) for heating.
2. The passive solar phase-change energy-storage heating system according to claim 1, wherein a plurality of annular cylindrical phase-change modules occupying 70% -80% of the total volume are arranged inside the phase-change energy-storage device (3) in a staggered manner from inside to outside in a concentric circle manner, the fluid flows in a baffled manner, the high-melting-point phase-change module is arranged on the inner side, and the low-melting-point phase-change module is arranged on the outer side; the high-melting-point phase change module is made of a phase change material with the phase change temperature of 50-55 ℃; the low-melting-point phase change module is made of a phase change material with the phase change temperature of 40-45 ℃; the surface of each phase change module is provided with salient points, ripples or metal fins added inside to increase the heat transfer coefficient of the phase change module, and the phase change material is added with expanded graphite powder to enhance the heat conductivity coefficient of the phase change module.
3. a passive solar phase-change energy-storage heating system according to claim 1, characterized in that the heat source further comprises an air-source heat pump (2) as an auxiliary heat source, connected in parallel with the solar heat collector (1).
4. A passive solar phase-change energy-storage heating system according to claim 1, characterized in that the outlet of the solar heat collector (1), the interior of the phase-change energy-storage device (3), the inlet pipe of the user terminal (4) and the room are respectively provided with a first temperature sensor (19) (20) (21) (22), a fourth temperature sensor (20) (21) (22), and the control of the valve is realized by measuring the temperature.
5. A passive solar phase-change energy-storage heating system as claimed in claim 1, wherein a plurality of said solar heat collectors (1) are connected in parallel to form a heating unit.
6. The passive solar phase-change energy-storage heating system of claim 1 or 2, wherein the solar heat collector (1) is one of a flat plate heat collector, a vacuum tube heat collector or a heat pipe heat collector.
7. The passive solar phase-change energy-storage heating system as claimed in claim 1 or 2, wherein the solar heat collector (1) is arranged in a manner that the solar heat collector is arranged in.
8. A passive solar phase change energy storage heating system according to claim 1 or 2, characterized in that the user terminal (4) is one or more of a geothermal coil, a fan coil or the like.
9. A passive solar phase-change energy-storage heating system according to claim 1 or 2, characterized in that the outdoor pipeline connected with the solar heat collector (1) is attached with an electric tracing band.
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| CN201910867450.3A CN110578960A (en) | 2019-09-12 | 2019-09-12 | passive solar phase-change energy-storage heating system |
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| CN201910867450.3A CN110578960A (en) | 2019-09-12 | 2019-09-12 | passive solar phase-change energy-storage heating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986145A (en) * | 2019-12-31 | 2020-04-10 | 贺迈新能源科技（上海）有限公司 | System integrated type phase change energy storage heating device |
| CN111649377A (en) * | 2020-06-08 | 2020-09-11 | 山东国仁节能科技有限公司 | Solar energy and air source heat pump combined heating system |
| CN111981554A (en) * | 2020-08-12 | 2020-11-24 | 天津科技大学 | Solar energy and phase change energy storage-based heat storage and supply system and control method |
| WO2023056861A1 (en) * | 2021-10-08 | 2023-04-13 | 天津大学 | Heat supply system coupling passive phase change energy storage sunlight room and air source heat pump |
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| CN202485071U (en) * | 2012-01-21 | 2012-10-10 | 中国建筑西北设计研究院有限公司 | Solar phase change heat storage and capillary network radiant heating device |
| CN103115389A (en) * | 2012-12-27 | 2013-05-22 | 重庆大学 | Solar energy combined type phase-change heat storage heating system |
| CN106595084A (en) * | 2017-01-06 | 2017-04-26 | 天津大学 | Combined modular phase change heat storage water tank |
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2019
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| CN2397439Y (en) * | 1999-07-23 | 2000-09-20 | 浙江大学 | Combined phase change material cylindrical heat storage unit |
| JP2012067948A (en) * | 2010-09-22 | 2012-04-05 | Panasonic Corp | Solar power utilization system |
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| CN103115389A (en) * | 2012-12-27 | 2013-05-22 | 重庆大学 | Solar energy combined type phase-change heat storage heating system |
| CN106595084A (en) * | 2017-01-06 | 2017-04-26 | 天津大学 | Combined modular phase change heat storage water tank |
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