CN212691920U - Passive solar phase-change energy-storage heating system - Google Patents
Passive solar phase-change energy-storage heating system Download PDFInfo
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- CN212691920U CN212691920U CN201921523609.1U CN201921523609U CN212691920U CN 212691920 U CN212691920 U CN 212691920U CN 201921523609 U CN201921523609 U CN 201921523609U CN 212691920 U CN212691920 U CN 212691920U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 68
- 238000004146 energy storage Methods 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 230000008859 change Effects 0.000 claims abstract description 54
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000005338 heat storage Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 239000012782 phase change material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 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
- 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
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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
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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
- 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
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Abstract
The utility model discloses a passive form solar energy phase transition energy storage heating system, include heat source, phase transition energy memory (3), user end (4) and water pump (5) that constitute by solar collector (1), the hot water flow that the heat source produced falls into two the tunnel behind 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 utility model relates to a heating system especially relates to a passive form store phase transition energy storage heating system of 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.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a store passive form phase change energy storage heating system of solar energy to realize the high-efficient utilization of solar energy in winter in the building heating, reduce non-renewable energy's consumption, effectively solve the high scheduling problem of working costs.
The utility model discloses a passive form solar energy phase transition energy storage heating system, this system include heat source, phase transition energy memory 3, user end 4, the water pump 5 that comprises solar collector 1, solar collector 1 input sets up first valve 6, sets up water replenishing valve 17, the 2 inputs of air source heat pump set up the second valve 7 that is used for the return water, the hot water flow that the heat source produced falls into two tunnel behind the water pump 5: one path of return water flows through a seventh valve 12 arranged at an inlet pipe of the user terminal 4 and enters the user terminal 4 to supply heat indoors, the other path of return water flows into the phase change energy storage device 3 through a check valve 16 and a valve 10 to store heat, and return water of the phase change energy storage device 3 flows through a third valve 8 and a first check valve 13, is mixed with return water of the user and then flows back to a heat source; the phase change energy storage device 3 is internally provided with a plurality of annular cylindrical phase change modules which are sequentially staggered from inside to outside in a concentric circular manner, fluid flows in a baffling 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;
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 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 utility model provides a pair of passive form solar energy phase transition energy storage heating system has following advantage:
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 view 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 present invention.
Fig. 3 is a schematic cross-sectional view of a phase change energy storage device according to an embodiment of the present 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 will be described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1-3, the utility model discloses a passive form solar energy phase transition energy storage heating system mainly includes solar collector 1, air source heat pump 2, phase transition energy memory 3, user's end 4 and 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 inlet pipe of the user terminal 4, the interior of the phase change energy storage device 3 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 utility model discloses a basic operation mode 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 utility model discloses a control strategy 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 (8)
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 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 return water flows into the phase change energy storage device (3) through a check valve (16) and a valve (10) for heat storage, and return water of the phase change energy storage device (3) flows through a third valve (8) and a first check valve (13), is mixed with the return water of the user and then flows back to a heat source; the phase change energy storage device (3) is internally provided with a plurality of annular cylindrical phase change modules which are sequentially staggered from inside to outside in a concentric circular manner, fluid flows in a baffling 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;
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. 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).
3. The passive solar phase-change energy-storage heating system according to claim 1, wherein the outlet of the solar heat collector (1), the inlet pipe of the user terminal (4), the interior of the phase-change energy storage device (3) and the room are respectively provided with a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, and the control of the valve is realized by measuring the temperature.
4. A passive solar phase-change energy-storage heating system according to claim 1, characterized in that several solar heat collectors (1) are connected in parallel to form a heating unit.
5. The passive solar phase-change energy-storage heating system according to claim 1, 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.
6. The passive solar phase-change energy-storage heating system according to claim 1, wherein the solar heat collector (1) is arranged in a manner that the solar heat collector is arranged in a manner that the solar.
7. A passive solar phase change energy storage heating system according to claim 1, wherein the user terminal (4) is one or more of a geothermal coil, a fan coil.
8. The passive solar phase-change energy-storage heating system as claimed in claim 1, wherein an electric tracing band is attached to an outdoor pipeline part connected with the solar heat collector (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523609.1U CN212691920U (en) | 2019-09-12 | 2019-09-12 | Passive solar phase-change energy-storage heating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921523609.1U CN212691920U (en) | 2019-09-12 | 2019-09-12 | Passive solar phase-change energy-storage heating system |
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| CN212691920U true CN212691920U (en) | 2021-03-12 |
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| CN201921523609.1U Expired - Fee Related CN212691920U (en) | 2019-09-12 | 2019-09-12 | Passive solar phase-change energy-storage heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777188A (en) * | 2022-05-24 | 2022-07-22 | 吉林建筑科技学院 | Photothermal phase change heat storage and floor integrated heating system |
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2019
- 2019-09-12 CN CN201921523609.1U patent/CN212691920U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777188A (en) * | 2022-05-24 | 2022-07-22 | 吉林建筑科技学院 | Photothermal phase change heat storage and floor integrated heating system |
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Granted publication date: 20210312 |