CN211290271U - Passive solar two-stage phase-change heat storage and heating device - Google Patents
Passive solar two-stage phase-change heat storage and heating device Download PDFInfo
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- CN211290271U CN211290271U CN201921031921.9U CN201921031921U CN211290271U CN 211290271 U CN211290271 U CN 211290271U CN 201921031921 U CN201921031921 U CN 201921031921U CN 211290271 U CN211290271 U CN 211290271U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 238000005338 heat storage Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000012782 phase change material Substances 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000007704 transition Effects 0.000 description 9
- 238000004146 energy storage Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction 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
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229940087562 sodium acetate trihydrate Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000004781 supercooling Methods 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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- Central Heating Systems (AREA)
- Building Environments (AREA)
Abstract
The utility model discloses a passive solar two-stage phase-change heat storage and supply device, which consists of a solar heat collector (1) and a radiator (2), wherein the solar heat collector (1) is installed through a bracket (7), and the solar heat collector (1) and the radiator (2) are connected with a water return pipe (12) through a water supply pipe (11); the phase-change heat radiator is characterized in that a high-melting-point phase-change material (9) is filled outside a water supply pipe (11) on the upper half part of the radiator (2), and a low-melting-point phase-change material (10) is filled outside a water return pipe (12) on the lower half part of the radiator (2). Compared with the prior art, the utility model discloses a heating installation passes through solar collector and absorbs solar energy daytime, and the heating is stored unnecessary heat in phase change material simultaneously, and the heat of release is indoor heating night, when maintaining the room temperature invariant round clock, has improved the utilization efficiency of solar energy, has solved the problem of solar energy intermittent type nature and instability, has reached the purpose of make full use of solar energy.
Description
Technical Field
The utility model relates to a heating system especially relates to a passive form's heating system of solar energy doublestage phase change energy storage.
Background
At present, in rural areas of China, heating is generally carried out by burning coal in winter, so that not only is a large amount of primary energy consumed, but also the problem of serious environmental pollution exists. Solar energy is the most common renewable clean energy and is used as a heat source for a heating system, so that the consumption of primary energy can be reduced, and the development of low-carbon buildings and green buildings is facilitated. Therefore, the passive solar heating technology has great development potential for responding energy conservation and emission reduction and realizing clean heating.
The phase-change energy storage technology has the advantages of large energy storage capacity, small temperature fluctuation, limited indoor space occupation and stable performance, and the combination of the energy storage technology and solar heating is an important way for solving the intermittency and instability of solar energy. The phase-change material absorbs solar radiant heat in the daytime, stores the solar radiant heat in a latent heat mode, and releases the latent heat for buildings at night, so that the temperature level at night is improved, and the heating reliability is ensured.
The phase change energy storage technology is used for combining phase change materials with an enclosure structure in passive heating of a building so as to achieve the effects of peak clipping and valley filling and reducing indoor temperature fluctuation, but the utilization rate of solar energy is low, and the heating effect is limited.
At present, the system for heating by utilizing solar energy is divided into an active type and a passive type from the aspect of heat collection, wherein the passive type is mostly a solar energy-air system, the structure is relatively simple, the investment is low, but the utilization efficiency of solar radiant heat is low, and the heat supply capacity is limited to a certain extent due to the low heat capacity of air.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a passive form solar energy doublestage phase transition heat-retaining heating system, can reach on the basis that does not consume the extra energy, maintain the room temperature stability round clock, energy saving and emission reduction improves solar energy utilization efficiency's purpose.
The utility model relates to a passive solar two-stage phase change heat storage and heating device, which comprises a solar heat collector 1 and a radiator 2, wherein the solar heat collector 1 is installed through a bracket 7, and the solar heat collector 1 and the radiator 2 are connected with a water return pipe 12 through a water supply pipe 11; a water supply pipe 11 positioned at the upper half part of the radiator 2 is filled with a high melting point phase change material 9, and a water return pipe 12 positioned at the lower half part of the radiator 2 is filled with a low melting point phase change material 10.
The outdoor pipeline parts of the water supply pipe 11 and the water return pipe 12 are pasted with electric tracing bands 5 and are externally covered with an insulating layer 6.
The phase transition temperature of the high-melting-point phase change material 9 is 50-60 ℃, and the phase transition temperature of the low-melting-point phase change material 10 is 25-35 ℃.
And round fins are arranged on the inner pipe wall of the radiator 2 to enhance heat exchange.
A set of solar collectors 1 can be connected to a plurality of heat sinks.
The check valve 3 is installed on the water supply pipe 11 to prevent the hot water from flowing backward at night, and the stop valve 4 is installed on the return pipe 12 to control the water flow condition through the valve according to the indoor temperature.
Compared with the prior art, the utility model, have following advantage:
1. the device absorbs solar energy by the solar heat collector in the daytime, stores redundant heat in the phase-change material while heating, releases heat at night to heat the indoor, maintains the constant room temperature day and night, improves the utilization efficiency of the solar energy, solves the problems of intermittence and instability of the solar energy, and achieves the purpose of fully and comprehensively utilizing the solar energy;
2. the operation cost is low.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the passive solar two-stage phase-change heat-storage heating system of the present invention;
FIG. 2 is a schematic view of a heat sink;
reference numerals:
1. the solar heat collector comprises a solar heat collector body, 2 parts of a heat radiator, 3 parts of a check valve, 4 parts of a stop valve, 5 parts of an electric tracing band, 6 parts of a heat insulation layer, 7 parts of a bracket, 8 parts of an outer wall, 9 parts of a high-melting-point phase change material, 10 parts of a low-melting-point phase change material, 11 parts of a water supply pipe, 12 parts of a water return pipe.
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. 1-2, the utility model discloses a passive form solar energy doublestage phase transition heat-retaining heating system structure includes solar collector 1 and radiator 2, and solar collector 1 passes through support 7 with certain angle and installs on the outer wall, is located the delivery pipe 11 of radiator 2 first and fills high melting point phase change material 9 outward, is located the wet return 12 of radiator 2 lower half and fills low melting point phase change material 10 outward. Solar collector 1 and radiator 2 link to each other through supplying/wet return, are equipped with check valve 3 on the delivery pipe, prevent night hot water adverse current, are equipped with stop valve 4 on the wet return, pass through the valve according to indoor temperature and control the rivers condition. The outdoor pipeline parts of the water supply pipe and the water return pipe are pasted with the electric tracing band 5, the heat preservation layer 6 is coated outside, and when the outdoor temperature is lower than 0 ℃, the electric tracing band 5 is opened to prevent the pipelines from freezing.
The device has no excessive limitation on climate, has strong adaptability, can adjust the valve according to different climates, keeps the indoor temperature within a certain range without supercooling or overheating, and has better heating effect in areas with sufficient solar energy.
Wherein:
the phase transition temperature of the high-melting-point phase transition material 9 is 50-60 ℃, the phase transition temperature of the low-melting-point phase transition material 10 is 25-35 ℃, and the phase transition material is selected from one or more of paraffin, fatty acid, stearic acid, sodium acetate trihydrate, hexadecanoic acid and octadecanol. According to different water supply and return temperatures, two phase-change materials with different phase-change temperatures are adopted, so that the heat of water supply and return can be fully collected, and the solar energy utilization rate is improved.
The solar heat collector 1 is arranged in a manner of facing south to north, and the included angle between the solar heat collector and the horizontal plane is consistent with the latitude of the geographical position, so that the heat collection efficiency of the solar heat collector is improved.
Round fins are arranged on the inner pipe wall of the radiator 2 to enhance heat exchange.
According to different indoor heat loads, one set of solar heat collector can be connected with a plurality of radiators.
The working process of the utility model is as follows:
energy storage working condition: water absorbs solar energy in the solar thermal collector 1, the temperature rises, the volume expands, the density reduces, consequently along water supply pipe through check valve 3 entering radiator 2, earlier high temperature supplies water heat and stores in high melting point phase change material 9, simultaneously to indoor heating, after the temperature reduces, further stores the heat of low temperature return water in low melting point phase change material 10, and the return water gets into solar thermal collector 1 again and heats.
Energy release working conditions are as follows: the high melting point phase change material 9 firstly releases heat through water flow in the heat transfer guide pipe, and heats indoors through heat convection and heat radiation, and when the heat stored in the high melting point phase change material 9 is exhausted and the water temperature is further reduced, the low melting point phase change material 10 releases heat to continue to supply heat indoors.
The check valve 3 is used to prevent the heat loss caused by the density reason when the heated water after the phase change material releases heat flows back to the solar heat collector 1. The stop valve 4 is used for adjusting water flow according to indoor temperature, and can gradually close the valve to reduce flow when the room temperature rises and gradually open the valve to increase flow when the room temperature falls under the working condition of energy storage; under the energy release working condition, the valve is closed, and heat loss caused by heat exchange between hot water and cold water on the side of the solar heat collector 1 is prevented.
Claims (6)
1. A passive solar two-stage phase-change heat storage and supply device comprises a solar heat collector (1) and a radiator (2), wherein the solar heat collector (1) is installed through a bracket (7), and the solar heat collector (1) and the radiator (2) are connected with a water return pipe (12) through a water supply pipe (11); the phase-change heat radiator is characterized in that a high-melting-point phase-change material (9) is filled outside a water supply pipe (11) positioned at the upper half part of the radiator (2), and a low-melting-point phase-change material (10) is filled outside a water return pipe (12) positioned at the lower half part of the radiator (2).
2. The passive solar two-stage phase-change heat-storage heating device as claimed in claim 1, wherein the outdoor pipeline parts of the water supply pipe (11) and the water return pipe (12) are pasted with electric tracing bands (5) and are externally covered with the heat-insulating layer (6).
3. The passive solar two-stage phase-change heat-storage heating device as claimed in claim 1, wherein the phase-change temperature of the high-melting-point phase-change material (9) is 50-60 ℃ and the phase-change temperature of the low-melting-point phase-change material (10) is 25-35 ℃.
4. The passive solar two-stage phase-change heat storage and heating device as claimed in claim 1, wherein the heat sink (2) is provided with round fins on its inner wall to enhance heat exchange.
5. The passive solar two-stage phase-change heat-storage heating device as claimed in claim 1, wherein a set of solar collectors (1) can be connected with a plurality of radiators.
6. The passive solar two-stage phase-change heat-storage heating device as claimed in claim 1, wherein the water supply pipe (11) is provided with a check valve (3) for preventing the hot water from flowing backwards at night; a stop valve (4) is arranged on the water return pipe (12), and the water flow condition is controlled through a valve according to the indoor temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031921.9U CN211290271U (en) | 2019-07-04 | 2019-07-04 | Passive solar two-stage phase-change heat storage and heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031921.9U CN211290271U (en) | 2019-07-04 | 2019-07-04 | Passive solar two-stage phase-change heat storage and heating device |
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| Publication Number | Publication Date |
|---|---|
| CN211290271U true CN211290271U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921031921.9U Expired - Fee Related CN211290271U (en) | 2019-07-04 | 2019-07-04 | Passive solar two-stage phase-change heat storage and heating device |
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| Country | Link |
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| CN (1) | CN211290271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332597A (en) * | 2019-07-04 | 2019-10-15 | 天津大学 | Passive type solar energy twin-stage phase-change thermal storage heating installation |
| CN111998562A (en) * | 2020-09-10 | 2020-11-27 | 伦伟锋 | Solar controller anti-frost device for residents in mountainous area |
-
2019
- 2019-07-04 CN CN201921031921.9U patent/CN211290271U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332597A (en) * | 2019-07-04 | 2019-10-15 | 天津大学 | Passive type solar energy twin-stage phase-change thermal storage heating installation |
| CN111998562A (en) * | 2020-09-10 | 2020-11-27 | 伦伟锋 | Solar controller anti-frost device for residents in mountainous area |
| CN111998562B (en) * | 2020-09-10 | 2022-08-12 | 山东诺瑞特智能科技有限公司 | Solar controller anti-frost device for residents in mountainous area |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 |