CN111631056A - Greenhouse heating system - Google Patents
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- CN111631056A CN111631056A CN202010673420.1A CN202010673420A CN111631056A CN 111631056 A CN111631056 A CN 111631056A CN 202010673420 A CN202010673420 A CN 202010673420A CN 111631056 A CN111631056 A CN 111631056A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- 238000005338 heat storage Methods 0.000 claims abstract description 81
- 239000012188 paraffin wax Substances 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 16
- 239000002609 medium Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000005855 radiation Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000011232 storage material Substances 0.000 description 3
- 238000012271 agricultural production Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003898 horticulture Methods 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/243—Collecting solar energy
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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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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- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
Abstract
The invention relates to a greenhouse heating system. This greenhouse heating system includes: the device comprises a one-way phase-change heat storage and release device, a first air duct, a second air duct, a third air duct, a circulating fan, a first air door, a second air door, a third air door, a resistance heater, an air release port and a heat collector; the air outlet of the same-path phase-change heat storage and release device is connected with the air inlet of the heat collector through a first air duct; the air outlet of the heat collector is connected with the air inlet of the phase change heat storage and release device on the same path through a second air duct; the circulating fan and the third air door are both arranged on the second air channel; a resistance heater is arranged on an air outlet of the phase change heat storage and release device on the same path; the first air door is arranged on the first air channel; the air outlet of the same-path phase change heat storage and release device is also connected with the heat release port through a third air duct. The greenhouse heating system provided by the invention can solve the problem of low effective heat release rate of phase change heat storage in the prior art, and has the characteristics of simple structure and small heat storage volume.
Description
Technical Field
The invention relates to the field of solar equipment, in particular to a greenhouse heating system.
Background
The greenhouse is used as an important facility in agricultural production, and due to the anti-seasonal and anti-regional functional characteristics of the greenhouse, a proper microclimate environment is provided for the winter cultivation of horticultural crops. Greenhouse heat supply is always a key problem which troubles growers, especially in northern areas of China, and even influences the healthy development of facility industry.
The heat supply modes of the greenhouse comprise hot water heat supply, hot air heat supply, steam heat supply, electric heat supply, radiation heat supply, fuel combustion heat supply and the like, and because the greenhouse heat supply modes have the problems of high energy consumption, poor heat supply temperature stability, environmental pollution, high cost and the like, the development and utilization of clean new energy are always hot spots for research in the field of facility horticulture.
Because solar heat supply can not meet load heat supply requirements under the conditions of no sun such as cloudy and snowy days, night and the like, in the prior art, a heat storage body is cascaded on the basis of solar energy for storing heat energy so as to achieve the aim of stably supplying load heat energy. The greenhouse solar heat supply is generated according to the growth requirements of greenhouse plants in different regions and under different climatic conditions, and can reduce energy consumed during heat supply in cloudy and snowy days and at night and pollution gas discharged by the energy, thereby achieving the effects of energy conservation and emission reduction.
The heat storage and supply of greenhouse solar energy is a technology of collecting solar radiation by using solar heat collector and converting it into heat energy to store heat and supply heat. A solar heat storage and supply system collects solar radiation by a solar heat collector and converts the solar radiation into heat energy, fluid is used as a heat transfer medium, solid or liquid is used as a heat storage medium, and the heat energy is stored by sensible heat or latent heat and then is sent to a heat demand place for supplying heat by a heat dissipation component. The existing solar heating system generally comprises a solar heat collector, a heat storage and supply device, a connecting pipeline, an auxiliary heat source and a control system.
At present, a solar energy heat collection and release device is adopted for supplying heat in a greenhouse, but the effect of the solar energy heat collection and release device is not ideal. The existing greenhouse solar energy heat storage and supply has two forms, one is to store the residual heat after the solar energy heats the greenhouse in the daytime by taking solid as a heat storage medium, and the main function of the greenhouse solar energy heat storage and supply is to balance the temperature of the greenhouse and absorb the redundant heat so as to emit the residual heat when the greenhouse heat is reduced at night. The other is that solid or liquid is used as heat storage medium, solar radiation energy outside the greenhouse in daytime is converted into heat energy through heat collection to store heat and supply heat, and the modes of storing heat and supplying heat are two, one is a heat collection and release mode integrating solar heat collection and phase change; the other is a heat collecting and releasing mode adopting a solar water heater.
In summary, the existing solar heating system has the following problems:
the redundant heat storage equipment adopts a heat storage sand layer or a thin inorganic phase change plate arranged on the rear wall of the greenhouse, and mainly has the problems of small heat storage amount, difficult automatic control and incapability of meeting the heat requirement of the greenhouse;
the outdoor daytime solar energy collection, storage and heat supply equipment comprises an integrated solar energy collection, storage and heat release device and a solar water heater, and the integrated solar energy collection, storage and heat release device has the defects of small heat storage capacity, serious heat loss when being installed outdoors, small effective heat release and the like. When the solar water heater meets a certain heat quantity, the problems of large heat accumulator volume, large occupied area, complex heat exchange equipment and the like exist.
Therefore, it is an urgent technical problem in the art to provide a greenhouse heating system capable of solving the above problems.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a solar energy one-way phase-change heat storage and release type greenhouse heating system.
In order to achieve the purpose, the invention provides the following scheme:
a greenhouse heating system, comprising: the device comprises a one-way phase-change heat storage and release device, a first air duct, a second air duct, a third air duct, a circulating fan, a first air door, a second air door, a third air door, a resistance heater, an air release port and a heat collector;
the air outlet of the same-path phase change heat storage and release device is connected with the air inlet of the heat collector through the first air channel; the air outlet of the heat collector is connected with the air inlet of the phase change heat storage and release device on the same path through the second air duct;
the circulating fan and the third air door are both arranged on the second air duct; a resistance heater is arranged on an air outlet of the same-path phase change heat storage and release device; the first air door is arranged on the first air duct; and the air outlet of the same-path phase change heat storage and release device is also connected with the heat release port through the third air duct.
Preferably, the phase change heat storage and release device in the same path comprises: the device comprises a fin heat exchange tube, a filling opening, a filling medium and a container body;
the fin heat exchange tubes are distributed in the container body, and the filling medium is injected into the container body through the filling opening.
Preferably, the filling medium is paraffin.
Preferably, the number of the finned heat exchange tubes is multiple.
Preferably, the greenhouse heating system further comprises an electric control device;
the electric control device is respectively electrically connected with the circulating fan, the first air door, the second air door, the third air door and the resistance heater;
the electric control device is used for controlling the circulating fan, the first air door, the second air door, the third air door and the resistance heater to be opened and closed.
Preferably, the third damper is a three-way damper.
Preferably, the greenhouse heating system further comprises a three-way interface;
the first interface of the three-way interface is connected with the air outlet of the one-way phase change heat storage and release device; a second interface of the three-way interface is connected with the first air duct; and a third interface of the three-way interface is connected with the third air duct.
Preferably, the greenhouse heating system comprises a solar energy and resistance heating device;
the solar and resistance heating device provides working heat energy for the greenhouse heating system.
Preferably, the number of the heat release ports is plural.
Preferably, the heat collector is a solar heat collector.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the greenhouse heat supply system provided by the invention, air heated by the heat collector is sent to the phase change heat storage and release device on the same path through the connecting air channel by the circulating fan for heat exchange so as to provide greenhouse heat, and the problem of low effective heat release rate of phase change heat storage in the prior art can be solved. Further, by using a plurality of dampers, it is possible to freely switch between heat storage and heat release. In addition, the greenhouse heating system provided by the invention also has the advantage of simple structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a greenhouse heating system provided by the present invention;
FIG. 2 is a front view of the phase change heat storage and release device of the same path provided by the present invention;
FIG. 3 is a side view of the same-way phase change heat storage and release device provided by the invention;
description of reference numerals:
the method comprises the following steps of 1-container body, 2-steel plate plugging, 3-air inlet, 4-filling port, 5-aluminum plate support, 6-finned heat exchange tube, 7-filling medium, 8-heat collector, 9-greenhouse, 10-same-path phase change heat storage and release device, 11-circulating fan, 12-third air door, 13-first air door, 14-second air door, 15-heat release port, 16-first air duct, 17-electric control device, 18-resistance heater, 19-second air duct and 20-third air duct.
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.
The invention aims to provide a greenhouse heating system to solve the problems of large heat accumulator volume, large space, small heat accumulation, serious heat loss, small effective heat release of phase change heat accumulation, difficult automatic control and the like in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural view of a greenhouse heating system provided by the present invention, and as shown in fig. 1, the greenhouse heating system includes: the phase-change heat storage and release device comprises a same-path phase-change heat storage and release device 10, a first air duct 16, a second air duct 19, a third air duct 20, a circulating fan 11, a first air door 13, a second air door 14, a third air door 12, a resistance heater 18, a heat release port 15 and a heat collector 8.
And the air outlet of the same-path phase change heat storage and release device 10 is connected with the air inlet 3 of the heat collector 8 through the first air duct 16. And the air outlet of the heat collector 8 is connected with the air inlet 3 of the phase change heat storage and release device 10 on the same path through the second air duct 19. Preferably, the heat collector 8 is a solar heat collector.
The circulating fan 11 and the third damper 12 are both disposed on the second air duct 19. And a resistance heater 18 is arranged on an air outlet of the same-path phase change heat storage and release device 10. The first damper 13 is disposed on the first air duct 16. The air outlet of the phase change heat storage and release device 10 on the same path is also connected with the heat release port 15 through the third air duct 20. Preferably, the third damper 12 is a three-way damper. The number of the heat release ports 15 is plural.
The air outlet of the phase change heat storage and release device 10, the first air duct 16 and the third air duct 20 are communicated through a three-way interface.
As a preferred embodiment of the present invention, as shown in fig. 2 and 3, the phase change heat storage and release device 10 includes: finned heat exchange tube 6, filling mouth 4, filling medium 7 and container body 1.
The finned heat exchange tubes 6 are distributed in the container body 1, and the filling medium 7 is filled into the container body 1 through the filling port 4. Preferably, the filling medium 7 is paraffin. The number of the finned heat exchange tubes 6 is multiple.
In order to solve the problem of difficult automatic control in the prior art, the greenhouse heating system provided by the invention further comprises an electric control device 17.
The electric control device 17 is electrically connected with the circulating fan 11, the first damper 13, the second damper 14, the third damper 12 and the resistance heater 18 respectively.
The electric control device 17 is used for controlling the opening and closing of the circulating fan 11, the first damper 13, the second damper 14, the third damper 12 and the resistance heater 18.
Preferably, the greenhouse heating system further comprises a three-way interface.
And a first interface of the three-way interface is connected with an air outlet of the phase change heat storage and release device 10 on the same path. The second port of the three-way port is connected with the first air duct 16. And the third interface of the three-way interface is connected with the third air duct 20.
Furthermore, the greenhouse heating system comprises solar and resistance heating means for providing the greenhouse heating system with working heat energy. Here also can be according to actual need with solar heating device replacement commercial power heating device.
The following provides a specific embodiment to further illustrate the scheme of the present invention, in the specific embodiment of the present invention, the finned heat exchange tube 6 is taken as a finned aluminum heat exchange tube, and paraffin is taken as an example for explanation, and in a specific application, the scheme of the present invention is also applicable to other finned heat exchange tubes 6 and filling media 7.
In this embodiment, the greenhouse heating system includes a phase-change heat storage and release device 10 and a solar energy photo-thermal conversion heat collecting device.
The same-way phase-change heat storage and release device 10 comprises a steel plate container, a steel plate plug 2, an air duct, a paraffin filling opening 4, an aluminum plate support 5, a fin aluminum heat exchange tube and paraffin.
Wherein the paraffin is injected into the steel plate container through the paraffin filling port 4. The fins of the finned aluminum heat exchange tubes are used for exchanging heat with the heat storage material. Paraffin is a heat storage phase change material, is solid at normal temperature, is liquid at the temperature of 45-75 ℃, and can reduce the heat storage volume.
The steel plate container is formed by rolling a steel plate into a cylinder, and two ends of the steel plate container are provided with steel plate plugs 2. The steel plate plug 2 is used for fixing the finned aluminum heat exchange tube arranged in the container. The aluminum plate bracket 5 is used for supporting the aluminum pipe and separating paraffin. The fin aluminum heat exchange tube is used for passing through air during heat storage and cold air during heat release and performs recuperative heat exchange with paraffin.
The volume of the steel plate container adopts the formula VContainer with a lid＝MParaffin wax/ρParaffin waxAnd (4) determining.
The heat required by the greenhouse 9 is given by the formula Q ═ VGreenhouse 9ρAir (a)CPAnd determining the delta T.
The mass of paraffin wax is calculated by formula MParaffin wax＝ФQ/(RLatent heat+CParaffin waxΔTLiquid paraffin) And (4) determining.
When the greenhouse heating system supplies heat, the paraffin consumption is determined according to the heat required by the greenhouse 9. Specifically, the heat quantity required by the greenhouse 9 is multiplied by the safety factor phi (generally 1.5-2.0), and the usage amount (mass and volume) of the paraffin can be calculated.
When the greenhouse heat supply system provided by the invention is used for heat storage of a greenhouse 9 in the daytime, the controller time control button is started, air heated by a heat collector 8 is sent to a finned aluminum heat exchange tube in the phase change heat storage and release device 10 on the same path by a circulating fan 11 through a second air duct 19, heat exchange is carried out, and then the air returns to the heat collector 8 through a first air duct 16 for heating, so that hot air circulation heat storage is completed.
When the greenhouse heat supply system provided by the invention is used for supplying heat to the greenhouse 9 at night, the circulating fan 11 sends the air of the heat collector 8 to the finned aluminum heat exchange tube through the second air duct 19, and the air is released to the greenhouse 9 through the third air duct 20 after heat exchange is carried out, so that cold air is circularly heated at night.
The solar photo-thermal conversion heat collection device comprises a heat collector 8, a circulating fan 11, a three-way air door (a third air door 12), a first air door 13, a second air door 14, first to third air ducts 20, a heat release port 15, a resistance heater 18 and an electric control device 17.
Wherein, the heat collector 8 converts the solar radiation energy into heat energy and heats the heat transfer medium, namely air. In the invention, the heat collector 8 is assembled on the bracket mainly in a series-parallel connection mode.
When storing heat, the circulating fan 11 conveys the hot air in the heat collector 8 to the finned aluminum heat exchange tube of the phase change heat storage and release device 10 in the same path for heat storage through the second air duct 19 and the three-way air door. When releasing heat, the circulating fan 11 delivers the hot air in the finned aluminum heat exchange tube of the phase change heat storage and release device 10 in the same path to the greenhouse 9 through the third air duct 20 and the first air door 13 for releasing heat. When the heat of the air in the finned aluminum heat exchange tube of the one-way phase change heat storage and release device 10 is lower than a set value, the electric control device 17 opens the second air door 14, the circulating fan 11 inputs the air in the finned aluminum heat exchange tube into the heat collector 8 through the first air duct 16 for heating, and then the third air door 12 is opened and returns to the finned aluminum heat exchange tube.
When the solar energy is insufficient in snowy days, the air in the finned aluminum heat exchange tube is heated by the resistance heater 18 and then released into the greenhouse 9 to provide the heat required by the greenhouse 9.
The electric control device 17 is used for opening or closing the three-way damper, the first damper 13, the second damper 14 and/or the resistance heater 18 according to the heat storage and release requirements and the set time period and the set temperature.
In the present invention, the heat in the phase-change heat storage and release device 10 is mainly the heat photo-thermal converted by the solar heat collector 8.
The air is heated by the heat collector 8 through the circulating fan 11 and sent to the phase-change heat storage and release device 10 through the connecting air channel for heat exchange, and then returned to the heat collector 8 for heating.
The heat release of the phase-change heat storage and release device 10 on the same path and the heating of the greenhouse 9 are realized by that air in the greenhouse 9 is sent into the phase-change heat storage and release device 10 on the same path through an air duct by a circulating fan 11 for heat exchange, and the air is heated and then added into the greenhouse 9 to provide heat for the greenhouse 9.
When the heat storage is different from the heat release, the heat release and the heat storage are realized by closing and opening the three-way air door, the first air door 13 and the second air door 14, and the air in the same path of phase change heat storage and release device 10 uses the same pipeline during the heat storage and release. The air in the phase-change heat accumulator 10 flows through the tubes with fins to reduce the "sugar-filled" phenomenon during heat release.
The three-way air door, the first air door and the second air door are opened in a time control mode to realize the alternate conversion of heat accumulation and heat release, and the heat exchange efficiency can be improved.
Compared with the prior art, the phase change heat storage technology and the heat loss technology adopted in the invention have the following advantages:
1. the heat storage material in the heat collection pool is divided by the pipeline and the fins, the stored heat is easy to release, and the effective heat release rate of the phase change heat storage is obviously improved.
2. The heat storage and release are completed by adopting the same air duct, the hot air circulation heat storage in daytime and the cold air heating circulation heat supply mode at night are realized by adopting the electric control device, and the automatic control process is simplified.
3. The heat storage material (paraffin) is adopted for heat storage, so that the heat storage capacity can be improved, and the heat storage space is reduced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A greenhouse heating system, comprising: the device comprises a one-way phase-change heat storage and release device, a first air duct, a second air duct, a third air duct, a circulating fan, a first air door, a second air door, a third air door, a resistance heater, an air release port and a heat collector;
the air outlet of the same-path phase change heat storage and release device is connected with the air inlet of the heat collector through the first air channel; the air outlet of the heat collector is connected with the air inlet of the phase change heat storage and release device on the same path through the second air duct;
the circulating fan and the third air door are both arranged on the second air duct; a resistance heater is arranged on an air outlet of the same-path phase change heat storage and release device; the first air door is arranged on the first air duct; and the air outlet of the same-path phase change heat storage and release device is also connected with the heat release port through the third air duct.
2. Greenhouse heating system according to claim 1, wherein the phase change heat storage and release device of the same circuit comprises: the device comprises a fin heat exchange tube, a filling opening, a filling medium and a container body;
the fin heat exchange tubes are distributed in the container body, and the filling medium is injected into the container body through the filling opening.
3. Greenhouse heating system according to claim 2, wherein the filling medium is paraffin.
4. The greenhouse heating system according to claim 2, wherein the number of the finned heat exchange tubes is plural.
5. Greenhouse heating system according to claim 1, wherein the greenhouse heating system further comprises an electric control device;
the electric control device is respectively electrically connected with the circulating fan, the first air door, the second air door, the third air door and the resistance heater;
the electric control device is used for controlling the circulating fan, the first air door, the second air door, the third air door and the resistance heater to be opened and closed.
6. The greenhouse heating system of claim 1, wherein the third damper is a three-way damper.
7. The greenhouse heating system according to claim 1, further comprising a three-way interface;
the first interface of the three-way interface is connected with the air outlet of the one-way phase change heat storage and release device; a second interface of the three-way interface is connected with the first air duct; and a third interface of the three-way interface is connected with the third air duct.
8. Greenhouse heating system according to claim 1, wherein the greenhouse heating system comprises solar and electric resistance heating means;
the solar and resistance heating device provides working heat energy for the greenhouse heating system.
9. Greenhouse heating system according to claim 1, wherein the number of heat emitting outlets is multiple.
10. Greenhouse heating system according to claim 1, wherein the heat collector is a solar heat collector.
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|---|---|---|---|
| CN202010673420.1A CN111631056A (en) | 2020-07-14 | 2020-07-14 | Greenhouse heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010673420.1A CN111631056A (en) | 2020-07-14 | 2020-07-14 | Greenhouse heating system |
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| CN111631056A true CN111631056A (en) | 2020-09-08 |
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2020
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