CN216254271U - Phase-change heat storage tube group for day and night energy balance and energy storage of greenhouse - Google Patents
Phase-change heat storage tube group for day and night energy balance and energy storage of greenhouse Download PDFInfo
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- CN216254271U CN216254271U CN202122516603.5U CN202122516603U CN216254271U CN 216254271 U CN216254271 U CN 216254271U CN 202122516603 U CN202122516603 U CN 202122516603U CN 216254271 U CN216254271 U CN 216254271U
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- phase
- phase change
- change heat
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- temperature
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- 238000005338 heat storage Methods 0.000 title claims abstract description 14
- 238000004146 energy storage Methods 0.000 title claims description 6
- 239000012782 phase change material Substances 0.000 claims abstract description 20
- 239000002689 soil Substances 0.000 claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 18
- 239000010935 stainless steel Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000012071 phase Substances 0.000 abstract description 35
- 238000013461 design Methods 0.000 abstract description 7
- 239000007791 liquid phase Substances 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 3
- 239000007790 solid phase Substances 0.000 abstract description 3
- 239000011358 absorbing material Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Greenhouses (AREA)
Abstract
The utility model discloses a phase-change heat pipe group for day and night energy balance and heat storage of a greenhouse, and relates to the technical field of greenhouses. According to the utility model, when the temperature is higher in the daytime, the phase change material can absorb heat from a solid phase to a liquid phase and transfer the heat to the stainless steel meshed pipeline through water to heat soil, when the temperature is reduced to a design temperature, the phase change stops, the temperature is accurately reduced under the condition of no ventilation, when the temperature is lower at night, the phase change material can radiate heat from the liquid phase change solid, the water above the ground starts to reduce the temperature, the underground soil heat is transferred to the phase change heat pipe to continue to release heat, when the temperature is increased to the design temperature, the phase change stops, the accurate temperature rise is realized under the condition of no heating, the cost is lower, and the normal use of the agricultural greenhouse under extreme weather can be ensured.
Description
Technical Field
The utility model relates to the technical field of greenhouses, in particular to a phase change heat storage pipe group for day and night energy balance and energy storage of a greenhouse.
Background
The problem of energy balance in the agricultural greenhouse needs to be solved, and the current countermeasures adopted by the greenhouse are as follows: the temperature is reduced by natural ventilation or forced ventilation and heat dissipation in daytime and artificially heated at night, the buried pipes are used for heating by using electricity or fossil energy in winter, and great control equipment and financial resources are required to be invested to realize temperature regulation and control.
The existing day and night energy balance for the greenhouse is realized by utilizing mechanical operation and investment of a large amount of equipment and energy consumption, and in order to reduce the cost, most agricultural greenhouses are in a stagnation state under the condition of extreme weather, so that the development of the agricultural greenhouses is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects that the existing day and night energy balance for a greenhouse utilizes mechanical operation and investment of a large amount of equipment and energy consumption, and most of agricultural greenhouses are in a stagnation state under the condition of extreme weather in order to reduce cost, so that the development of the agricultural greenhouses is influenced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a phase change heat storage tube group for day and night energy balance and energy storage of a greenhouse, comprising:
soil, the internal distribution of soil has the netted pipeline of stainless steel, and the top of stainless steel netted pipeline is connected with the phase transition heat pipe, first cavity has been seted up to the inside top of phase transition heat pipe, and the inside packing of first cavity has phase change material, the inboard of first cavity is provided with the second cavity, and the inside injection of second cavity has water, the upper end of phase transition heat pipe is sealed to have the end cover, and the top of phase transition heat pipe covers there is the big-arch shelter film.
Preferably, the fins are arranged above the outer portion of the phase-change heat pipe, and black heat-absorbing materials are sprayed on the outer portions of the fins.
Preferably, the total length of the phase-change heat pipe is 250cm, and the length of the phase-change heat pipe penetrating into the ground is 100 cm.
Preferably, the phase-change heat pipes are made of stainless steel, and the phase-change heat pipes and the adjacent phase-change heat pipes are uniformly distributed at intervals of 50 cm.
Preferably, the fins are in electric welding connection with the phase-change heat pipe, and the distance from the bottoms of the fins to the bottom of the phase-change heat pipe is 100 cm.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. according to the utility model, when the temperature is higher in the daytime, the phase change material can absorb heat from a solid phase to a liquid phase and transfer the heat to the stainless steel meshed pipeline through water to heat soil, when the temperature is reduced to a design temperature, the phase change stops, the temperature is accurately reduced under the condition of no ventilation, when the temperature is lower at night, the phase change material can radiate heat from the liquid phase change solid, the water above the ground starts to reduce the temperature, the underground soil heat is transferred to the phase change heat pipe to continue to release heat, when the temperature is increased to the design temperature, the phase change stops, the accurate temperature rise is realized under the condition of no heating, the cost is lower, and the normal use of the agricultural greenhouse under extreme weather can be ensured.
2. In the utility model, the phase-change material has the composition of Na2SO4·10H2O and Na2CO3·10H2O and a mass ratio of 4:6, the first phase change material 8 being in solution at 22.19 ℃ to 39.67 ℃, the total absorption latent heat value being 61.06KJ/kg, the second phase change materialThe phase change material 8 is solidified at 6.39-19.86 ℃ to release heat, the total potential heat value released is 40.28KJ/kg, and 9.22KJ/kg of energy is transferred to the underground soil 6 for storage through the heat exchange of the underground soil 6.
Drawings
FIG. 1 is a schematic cross-sectional view of a phase-change heat pipe according to the present invention;
FIG. 2 is a schematic view of the cross-sectional arrangement and distribution structure of the phase-change heat pipes in the greenhouse of the present invention;
FIG. 3 is a schematic diagram of a three-dimensional distribution structure of a phase-change heat pipe according to the present invention;
FIG. 4 is a schematic view of an external connection structure of a phase-change heat pipe according to the present invention;
fig. 5 is a schematic diagram of a distribution structure of the black heat absorbing material in the present invention.
Illustration of the drawings:
1. a phase change heat pipe; 2. a first cavity; 3. an end cap; 4. a second cavity; 5. greenhouse films; 6. soil; 7. a stainless steel mesh pipe; 8. a phase change material; 9. water; 10. a fin; 11. a black heat absorbing material.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a phase change heat storage tube group for day and night energy balance and energy storage of a greenhouse comprises soil 6, stainless steel mesh pipelines 7 are distributed in the soil 6, the top of each stainless steel mesh pipeline 7 is connected with a phase change heat tube 1, the total length of each phase change heat tube 1 is 250cm, the length of each phase change heat tube 1 penetrating into the ground is 100cm, the length of the designed phase change heat tube 1 on the ground is 150cm, the agricultural vegetable occupation ratio at the height is large, the phase change heat tube group is suitable for most greenhouses, the temperature of the layer can be well controlled to achieve the design purpose, the outer diameter of each phase change heat tube 1 is DN22, the total length is 250cm, the diameter of each stainless steel mesh pipeline 7 is DN32, the length of each phase change heat tube 1 penetrating into the ground is 100cm, the heat stored in water 9 in each stainless steel mesh pipeline 7 is transferred to underground soil, soil heat storage is achieved, and season-crossing heat storage tendency is achieved, the phase-change heat pipe 1 is made of stainless steel, the phase-change heat pipe 1 and adjacent phase-change heat pipes 1 are uniformly distributed at an interval of 50cm, the stainless steel is good in corrosion resistance, the ground phase-change heat pipes 1 are uniformly distributed, the temperature can be controlled more uniformly, a first cavity 2 is formed above the interior of the phase-change heat pipe 1, the interior of the first cavity 2 is filled with a phase-change material 8, the first-stage phase-change material 8 is dissolved at a temperature of between 22.19 and 39.67 ℃, the total absorbed latent heat value is 61.06KJ/kg, the second-stage phase-change material 8 is solidified and releases heat at a temperature of between 6.39 and 19.86 ℃, the total released latent heat value is 40.28KJ/kg, wherein 9.22KJ/kg of energy is transferred to underground soil 6 for storage through heat exchange, a second cavity 4 is arranged on the inner side of the first cavity 2, water 9 is injected into the second cavity 4, an end cover 3 is sealed at the upper end of the phase-change heat pipe 1, and a greenhouse film 5 covers the phase-change heat pipe 1.
Fin 10 is installed to phase change heat pipe 1's outside top, and fin 10's outside spraying has black heat absorbing material 11, be electric welding connection between fin 10 and the phase change heat pipe 1, and the bottom of fin 10 is 100cm to the distance between phase change heat pipe 1's the bottom, fin 10 through electric welding connection in phase change heat pipe 1's outside can increase heat transfer area, and improve phase change heat pipe 1's heat-absorbing capacity through black heat absorbing material 11, the bottom of fin 10 is 100cm to the distance between phase change heat pipe 1's the bottom, when guaranteeing phase change heat pipe 1 installation, fin 10 can be in phase change heat pipe 1's ground top completely, and fin 10 can also play the positioning action for the installation, it is accurate errorless to guarantee phase change heat pipe 1's installation depth.
The working principle is as follows: the outer diameter of the phase-change heat pipe 1 is DN22, the total length is 250cm, the diameter of the stainless steel mesh pipeline 7 is DN32, the phase-change heat pipe 1 utilizes the characteristic that the phase-change material 8 absorbs and releases heat in a phase-change mode at a certain temperature, the phase-change temperature of the phase-change material 8 is reached in the environment with higher temperature in the daytime, the phase-change material 8 can quickly change from solid phase to liquid phase to absorb heat and transfer the heat to the stainless steel mesh pipeline 7 through the water 9 to heat the soil 6, when the temperature is reduced to the design temperature, the phase-change material 8 stops changing, and the temperature is accurately reduced under the condition of no ventilation; under the condition of lower temperature at night, the phase change material 8 reaches the phase change temperature, firstly, the phase change material 8 can quickly dissipate heat from the liquid phase change solid, when the phase change material 8 gradually solidifies, the water 9 in the pipeline above the ground begins to cool down, the temperature of the water 9 in the stainless steel mesh pipeline 7 is higher than that of the water 9 on the ground, due to the density difference of the temperatures of the ground and the underground water 9, the heat of the underground soil 6 is transferred to the phase-change heat pipe 1 by the upward flow of the water 9 in the pipe, the phase-change heat pipe 1 continues to change phase and release heat, when the temperature rises to the design temperature, the phase-change heat pipe 1 stops transferring heat, realize not heating up to accurate intensification under the condition, the average heat accumulation amount per day for soil 6 through phase change heat pipe 1 is higher than the heat dissipation capacity per day, and phase change heat pipe 1 has increased soil 6's heat storage capacity to a certain extent, provides certain heat guarantee for overcast and rainy weather.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (5)
1. A phase change heat storage tube group for day and night energy balance and energy storage of a greenhouse is characterized by comprising:
soil (6), the internal distribution of soil (6) has stainless steel meshed pipeline (7), and the top of stainless steel meshed pipeline (7) is connected with phase change heat pipe (1), first cavity (2) have been seted up to the inside top of phase change heat pipe (1), and the inside packing of first cavity (2) has phase change material (8), the inboard of first cavity (2) is provided with second cavity (4), and the inside injection of second cavity (4) has water (9), the upper end of phase change heat pipe (1) is sealed to have end cover (3), and the top of phase change heat pipe (1) covers has greenhouse film (5).
2. The phase-change heat storage tube group for day and night energy balance and storage of a greenhouse as claimed in claim 1, wherein: the phase change heat pipe is characterized in that a fin (10) is arranged above the outer portion of the phase change heat pipe (1), and a black heat absorption material (11) is sprayed on the outer portion of the fin (10).
3. The phase-change heat storage tube group for day and night energy balance and storage of a greenhouse as claimed in claim 1, wherein: the total length of the phase change heat pipe (1) is 250cm, and the length of the phase change heat pipe (1) penetrating into the ground is 100 cm.
4. The phase-change heat storage tube group for day and night energy balance and storage of a greenhouse as claimed in claim 1, wherein: the phase change heat pipes (1) are made of stainless steel, and the phase change heat pipes (1) and the adjacent phase change heat pipes (1) are uniformly distributed at intervals of 50 cm.
5. The phase-change heat storage tube group for day and night energy balance and storage of a greenhouse as claimed in claim 2, wherein: the fin (10) is in electric welding connection with the phase change heat pipe (1), and the distance from the bottom of the fin (10) to the bottom of the phase change heat pipe (1) is 100 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122516603.5U CN216254271U (en) | 2021-10-19 | 2021-10-19 | Phase-change heat storage tube group for day and night energy balance and energy storage of greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122516603.5U CN216254271U (en) | 2021-10-19 | 2021-10-19 | Phase-change heat storage tube group for day and night energy balance and energy storage of greenhouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216254271U true CN216254271U (en) | 2022-04-12 |
Family
ID=81069863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122516603.5U Expired - Fee Related CN216254271U (en) | 2021-10-19 | 2021-10-19 | Phase-change heat storage tube group for day and night energy balance and energy storage of greenhouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216254271U (en) |
-
2021
- 2021-10-19 CN CN202122516603.5U patent/CN216254271U/en not_active Expired - Fee Related
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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: 20220412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |