CN111567277A - Phase-change energy-storage greenhouse - Google Patents
Phase-change energy-storage greenhouse Download PDFInfo
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- CN111567277A CN111567277A CN202010567131.3A CN202010567131A CN111567277A CN 111567277 A CN111567277 A CN 111567277A CN 202010567131 A CN202010567131 A CN 202010567131A CN 111567277 A CN111567277 A CN 111567277A
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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
- A01G9/14—Greenhouses
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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
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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
- A01G9/245—Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
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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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- 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
- A01G9/247—Watering arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/023—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention discloses a phase-change energy-storage greenhouse, which comprises arch trusses, high stand columns, low stand columns, vault insulation coatings and side wall insulation coatings, wherein two ends of lower chords of the arch trusses are respectively arranged on the high stand columns and the low stand columns to form a greenhouse frame, the vault insulation coatings cover the arch trusses, the side wall insulation coatings cover the high stand columns, the low stand columns and a gable wall, so that the greenhouse is formed, a phase-change energy storage body is arranged between every two adjacent arch trusses, an inner cavity of the greenhouse is divided into an upper cavity and a lower cavity which are respectively a temperature-adjusting cavity and a production cavity by the phase-change energy storage body, and the influence of external temperature change on the temperature in the production cavity is reduced through the temperature-adjusting. The invention takes the phase-change energy storage material after being packaged as the suspended ceiling, buffers the influence of the external temperature change on the interior of the greenhouse, and effectively solves the problems of high manufacturing cost, large power consumption and poor temperature control effect of the greenhouse combining sunlight, a boiler and a water curtain in the prior compressor air-conditioning type greenhouse.
Description
Technical Field
The invention relates to the technical field of agricultural greenhouses, in particular to a phase-change energy storage greenhouse.
Background
Intelligent agriculture (or called industrial agriculture) automatically opens or closes specified equipment by acquiring environmental parameters such as temperature inside and outside a greenhouse, soil temperature, CO2 concentration, humidity signals, illumination, leaf surface humidity, dew point temperature and the like in real time and even based on weather forecast future meteorological data information according to optimized parameter combinations required by all stages of crop growth, thereby adjusting the growth environment of crops to an optimal state and realizing annual, all-weather and anti-season industrial scale production of agriculture.
In the crop growth environment parameters needing to be adjusted in intelligent agriculture, temperature control is one item with the largest energy consumption and the largest cost. At present, a higher-end agricultural factory uses a compressor type air conditioner for temperature regulation, the construction cost of each square factory is more than 2000 yuan, the power consumption in the control process is serious, and the power consumption cost even accounts for more than 90% of the whole production cost. Slightly worse agricultural factories comprehensively utilize sunlight, boiler heating and water curtain or evaporative air coolers for cooling, but the temperature control difficulty is high, the cooling amplitude is limited during refrigeration, sunlight heating fluctuation is large during heating, and boiler heating energy consumption is serious.
Therefore, there is a need to design a greenhouse with low cost, low operation cost and high temperature control precision, which can better serve the production of intelligent agriculture.
Disclosure of Invention
Aiming at the existing problems, the invention provides a phase-change energy storage greenhouse, which effectively solves the problems of high manufacturing cost, high power consumption and poor temperature control effect of a sunlight, boiler and water curtain combined greenhouse in the existing compressor air-conditioning type greenhouse.
The technical scheme of the invention is as follows:
the invention provides a phase-change energy-storage greenhouse, which comprises arch trusses, a high upright post, a low upright post, a vault insulation coating and a side wall insulation coating, wherein two ends of a lower chord of each arch truss are respectively arranged on the high upright post and the low upright post to form a greenhouse frame, the vault insulation coating covers the arch trusses, the side wall insulation coating covers the high upright posts, the low upright posts and a gable wall to form the greenhouse, a phase-change energy storage body is arranged between every two adjacent arch trusses, an inner cavity of the greenhouse is divided into an upper cavity and a lower cavity which are respectively a temperature-adjusting cavity and a production cavity by the phase-change energy storage body, and the influence of external temperature change on the temperature in the production cavity is reduced through the temperature-.
Furthermore, the phase-change energy storage body comprises a phase-change energy storage layer and an encapsulation layer for encapsulating the phase-change energy storage layer, and the phase-change energy storage layer is made of a phase-change energy storage material with the phase-change temperature of 5-35 ℃.
Further, still include spray pipe, fan and wet return, the encapsulated layer passes through the mode of furred ceiling and fixes on the lower chord of arch truss, the spray pipe setting corresponds the top of high stand one side and can spray water to the upper surface of encapsulated layer at the encapsulated layer, the wet return sets up and corresponds the below of low stand one side and can receive the water that flows down from the encapsulated layer upper surface at the encapsulated layer, spray pipe and wet return link to each other with buried pipe heat transfer system respectively in order to accomplish water supply and drainage, the fan is fixed on arch truss web member and can be blown the evaporation to the water on encapsulated layer surface.
Furthermore, a water pump is arranged between the water return pipe and the buried pipe heat exchange system, the water pump pressurizes and injects water in the water return pipe into the buried pipe heat exchange system, the ground heat exchange system comprises a vertical ground heat exchanger, a water inlet distribution pipe of the ground heat exchanger and a water outlet collection pipe of the ground heat exchanger, the number of the vertical ground heat exchangers is multiple, water inlets of the vertical ground heat exchangers are respectively connected with the water inlet water distribution pipes of the ground heat exchangers in a sealing way, the water outlet of the vertical ground heat exchanger is respectively connected with the water outlet collecting pipe of the ground heat exchanger in a sealing way, the water spray pipe is hermetically connected with an outlet water collecting pipe of the buried pipe heat exchanger through a water spray pipe water valve, the water return pipe is hermetically connected with an inlet water distribution pipe of the buried pipe heat exchanger through a water storage tank, a water pump and a three-way reversing valve, so that the water spray pipe and the water return pipe respectively realize obtaining water supply from the vertical ground heat exchanger and discharging water into the vertical ground heat exchanger.
Furthermore, an external source energy supplementing system is arranged between the water return pipe and the water pump, the external source energy supplementing system comprises a water storage tank, an external source coil heat exchanger and a water storage tank water collecting pipe, the external source coil heat exchanger is installed in the water storage tank, an inlet and an outlet of the external source coil heat exchanger are respectively connected with an outlet and a return port of external cold and hot energy sources in a sealing mode, the lower end of the water return pipe is communicated with the water storage tank or the water storage tank water collecting pipe in a sealing mode, a water inlet of the water pump and an outlet of the water storage tank water collecting pipe are both located at the lower portion of the water storage tank and are communicated with the water storage tank in a sealing mode, so that under certain conditions, when the temperature requirement in a greenhouse cannot be met through a buried pipe heat exchange system, air radiation and/or solar radiation, the external cold and hot energy sources conduct the cold and hot energy to the, through the spray pipe, spray to the phase change energy storage body on, cold and hot energy conducts greenhouse inside through the phase change energy storage body to satisfy the needs of the interior temperature of greenhouse.
Furthermore, a geothermal energy balance system is arranged between the water storage tank and the water outlet collecting pipe of the buried pipe heat exchanger, the geothermal energy balance system comprises a cooling tower and a water supplementing opening, the water supplementing opening is arranged on the upper portion of the cooling tower, the water inlet end and the water outlet end of the cooling tower are respectively arranged on the upper side and the lower side of the cooling tower, the water inlet end of the cooling tower is communicated with the water outlet collecting pipe of the buried pipe heat exchanger through a water valve of the cooling tower, and the water outlet end of the cooling tower is communicated with the water storage tank through the water storage tank collecting pipe.
The heat recovery system comprises a cross-flow type gas-gas heat exchanger, a left air duct, a right air duct, an air inlet fan, an upper air duct, an upper elbow, a lower air duct, a lower elbow and an air outlet fan, wherein the left end and the right end of a horizontal channel of the cross-flow type gas-gas heat exchanger are respectively connected with the left air duct and the right air duct, the right air duct extends into the greenhouse production cavity, the air inlet fan is arranged in the right air duct, the upper end and the lower end of a vertical channel of the cross-flow type gas-gas heat exchanger are respectively connected with the upper air duct and the lower air duct, the lower channel extends into the lower part of the greenhouse production cavity through the lower elbow, the top of the upper air duct is provided with the upper elbow, the height of the upper elbow is higher than that of the top of the greenhouse, and the.
Further, vault heat preservation cladding is the book curtain formula, the arch truss coats and is stamped transparent plastic film, and transparent plastic film coats and is stamped vault heat preservation cladding, and vault heat preservation cladding can be rolled up to high stand from low stand through rolling up the curtain machine for when rolling up curtain formula vault heat preservation cladding, the chamber that adjusts the temperature still is confined, high stand is located the one side of keeping away from the sun winter of greenhouse location, low stand is located the one side that is close to the sun winter of greenhouse location, and the height that highly is less than high stand of low stand, the upper surface of phase transition energy storage body encapsulation layer is equipped with the black coating, makes things convenient for the phase transition energy storage body to accept sunshine and shines, absorbs more heats.
Furthermore, the vault insulation coating is fixed, the vault insulation layer is fixed on the arch truss, and the vault insulation coating is normally closed and is not opened during production operation.
Due to the adoption of the technology, compared with the prior art, the invention has the following specific positive beneficial effects:
1. the invention takes the encapsulated phase-change energy storage material as a suspended ceiling, divides the greenhouse into an upper chamber and a lower chamber, the lower chamber is used for production, and the upper chamber is used for regulating and controlling the temperature, so that the regulation and control process of the severe temperature acts on the phase-change energy storage material, and the influence of the regulation and control process of the temperature on crops is buffered.
2. The invention fully utilizes natural and physical factors such as day and night temperature difference, illumination, water evaporation, geothermal energy, material phase change, heat absorption and release and the like, and regulates and controls the growth environment temperature of crops with low cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the heat recovery system of the present invention.
In the figure: 1-a rolling screen machine, 2-a vault insulation coating, 3-a fan, 4-a humidification system, 5-a lighting system, 6-an arch truss, 7-a phase-change energy storage body, 8-a water return pipe, 9-a side wall insulation coating, 10-an electric control system, 11-a water replenishing port, 12-a cooling tower, 13-a water storage tank water collecting pipe, 14-a water storage tank, 15-an external coil heat exchanger, 16-a water pump, 17-a three-way reversing valve, 18-a buried pipe heat exchanger water inlet water dividing pipe, 19-a vertical buried pipe heat exchanger, 20-a cooling tower water valve, 21-a buried pipe heat exchanger water outlet water collecting pipe, 22-a water spray pipe water valve, 23-a water spray pipe, 24-a high upright column, 25-a low upright column, 40-a heat recovery system and 41-a cross-flow type gas-gas heat, 42-left air duct, 43-right air duct, 44-air inlet fan, 45-upper air duct, 46-upper elbow, 47-air outlet fan, 48-lower air duct and 49-lower elbow.
Detailed Description
The invention provides a phase-change energy-storage greenhouse, which comprises an arch truss 6, a high upright post 24, a low upright post 25, a vault insulation coating 2 and a side wall insulation coating 9, wherein two ends of a lower chord of the arch truss 6 are respectively arranged on the high upright post 24 and the low upright post 25 to form a greenhouse frame, the vault insulation coating 2 covers the arch truss 6, the side wall insulation coating 9 covers the high upright post 24, the low upright post 25 and a gable wall to form the greenhouse, a phase-change energy storage body 7 is arranged between the two adjacent arch trusses 6, the phase-change energy storage body 7 divides an inner cavity of the greenhouse into an upper cavity and a lower cavity which are a temperature adjusting cavity and a production cavity respectively, and the influence of external temperature change on the temperature in the production cavity is reduced through the temperature adjusting cavity.
The phase-change energy storage body 7 comprises a phase-change energy storage layer and an encapsulation layer for encapsulating the phase-change energy storage layer, and the phase-change energy storage layer is made of a phase-change energy storage material with the phase-change temperature of 5-35 ℃.
The mode that the encapsulation layer passes through the furred ceiling is fixed on the lower chord of arch truss 6, spray pipe 23 sets up and corresponds the top of high stand 24 one side and can spray water to the upper surface of encapsulation layer at the encapsulation layer, wet return 8 sets up and corresponds the below of low stand 25 one side and can receive the water that flows down from the encapsulation layer upper surface at the encapsulation layer, spray pipe 23 and wet return 8 link to each other with buried pipe heat transfer system respectively in order to accomplish water supply and drainage, fan 3 is fixed on the web member of arch truss 6 and can be blown the evaporation to the water on encapsulation layer surface.
A water pump 16 is arranged between the water return pipe 8 and the buried pipe heat exchange system, and the water pump 16 pressurizes and injects water received by the water return pipe 8 into the buried pipe heat exchange system.
The ground heat exchanger system comprises a plurality of vertical ground heat exchangers 19, a water inlet water distribution pipe 18 of the ground heat exchangers and a water outlet water collection pipe 21 of the ground heat exchangers, the vertical ground heat exchangers 19 are connected with water inlets of the water inlet water distribution pipe 18 of the ground heat exchangers in a sealing mode respectively, water outlets of the vertical ground heat exchangers 19 are connected with the water outlet water collection pipe 21 of the ground heat exchangers in a sealing mode respectively, water spray pipes 23 are connected with the water outlet water collection pipe 21 of the ground heat exchangers in a sealing mode through water spray pipe water valves 22, and the water return pipe 8 is connected with the water inlet water distribution pipe 18 of the ground heat exchangers in a sealing mode through a water storage tank 14, a water pump 16 and a three-way reversing valve 17, so that the water spray pipes 23 and the water return pipe 8 can respectively achieve water supply from the vertical ground heat exchangers 19 and discharge water into.
An external source energy supplementing system is arranged between the water return pipe 8 and the water pump 16, the external source energy supplementing system comprises a water storage tank 14, an external source coil heat exchanger 15 and a water storage tank water collecting pipe 13, the external source coil heat exchanger 15 is installed in the water storage tank 14, an inlet and an outlet of the external source coil heat exchanger 15 are respectively connected with an outlet and a return opening of external cold and hot energy sources in a sealing mode, the lower end of the water return pipe 8 is communicated with the water storage tank 14 or the water storage tank water collecting pipe 13 in a sealing mode, a water inlet of the water pump 16 and an outlet of the water storage tank water collecting pipe 13 are both located on the lower portion of the water storage tank 14 and are communicated with the water storage tank 14 in a sealing mode, so that under certain conditions, when the temperature requirement in a greenhouse cannot be met through a buried pipe heat exchange system, air radiation and/or solar radiation, external cold and hot energy sources are conducted to water in the water, the cold and hot energy is transmitted to the inside of the greenhouse through the phase change energy storage body 7 by spraying the water spray pipe 23 on the phase change energy storage body 7 so as to meet the requirement of the temperature in the greenhouse.
An earth energy balance system is arranged between the water storage tank 14 and the water outlet collecting pipe 21 of the buried pipe heat exchanger, the earth energy balance system comprises a cooling tower 12 and a water supplementing opening 11, the water supplementing opening 11 is arranged at the upper part of the cooling tower 12, the water inlet end and the water outlet end of the cooling tower 12 are respectively arranged at the upper side and the lower side of the cooling tower 12, the water inlet end of the cooling tower 12 is communicated with the water outlet collecting pipe 21 of the buried pipe heat exchanger through a cooling tower water valve 20, and the water outlet end of the cooling tower 12 is communicated with the water storage tank 14 through a water storage tank collecting pipe 13.
The heat recovery system 40 is fixed on one side wall of the high upright post 24, the heat recovery system 40 comprises a cross-flow type gas-gas heat exchanger 41, a left air duct 42, a right air duct 43, an air inlet fan 44, an upper air duct 45, an upper elbow 46, a lower air duct 48, a lower elbow 49 and an air outlet fan 47, the left end and the right end of a horizontal channel of the cross-flow type gas-gas heat exchanger 41 are respectively connected with the left air duct 42 and the right air duct 43, the right air duct 43 extends into the greenhouse production cavity, the air inlet fan 44 is arranged in the right air duct 43, the upper end and the lower end of a vertical channel of the cross-flow type gas-gas heat exchanger 41 are respectively connected with the upper air duct 45 and the lower air duct 48, the lower air duct 48 extends into the lower part of the greenhouse production cavity through the lower elbow 49, the top of the upper air duct 45 is provided with the upper elbow 46, the upper elbow.
Vault heat preservation cladding 2 is the book curtain formula, arch truss 6 coats and is stamped transparent plastic film, and transparent plastic film coats outward and has vault heat preservation cladding 2, and vault heat preservation cladding 2 can be rolled up to high stand 24 from low stand 25 through rolling up curtain machine 1 for when rolling up curtain formula vault heat preservation cladding 2, the chamber that adjusts the temperature still is confined, high stand 24 is located the one side of keeping away from the sun in winter of greenhouse location, low stand 25 is located the one side that is close to the sun in winter of greenhouse location, and low stand 25 highly is less than high stand 24's height, the packaging layer upper surface of phase transition energy storage body 7 is equipped with the black coating, makes things convenient for phase transition energy storage body 7 to accept sunshine, absorbs more heats.
When the greenhouse mainly reduces the temperature, the vault insulation coating 2 can also be fixed, the vault insulation coating 2 is fixed on the arch truss 6, and the vault insulation coating 2 is normally closed and is not opened during production operation.
The phase-change energy storage layer is made of phase-change energy storage materials with corresponding phase-change temperatures according to the temperature requirements of multiple growth processes of the main planted crops.
The first embodiment is as follows:
as shown in the attached drawing 1, the invention provides a phase-change energy-storage greenhouse, which comprises a greenhouse frame, a vault insulation coating 2, a side wall insulation coating 9, a phase-change energy storage body 7, a heat recovery system 40, a lighting system 5, a humidification system 4, a buried pipe heat exchange system, an external source energy supplement system, an earth energy balance system, an environment monitoring system and an electric control system 10, wherein the electric control system 10 is electrically connected with a water pump 16, a three-way reversing valve 17, a water spray pipe water valve 22, the heat recovery system 40, an external source coil pipe heat exchanger 15, an axial flow fan 3, the humidification system 4 and the lighting system 5 respectively, so that the control of each action is realized.
The greenhouse frame comprises a high upright column 24, a low upright column 25 and an arched truss 6 erected between the high upright column 24 and the low upright column 25, a side wall heat preservation coating 9 is enclosed outside the high upright column 24 and the low upright column 25 on the periphery of the greenhouse frame, a vault heat preservation coating 2 covers the top of the arched truss 6, a phase change energy storage body 7 is fixed on a lower chord of the arched truss 6, a lighting system 5 and a humidifying system 4 are arranged below the phase change energy storage body 7, a heat recovery system 40 is arranged on the side wall of one side of the high upright column 24, an underground pipe heat exchange system and an external energy supplement system are arranged under the ground, an earth energy balance system is arranged outside the greenhouse and is connected with the underground pipe heat exchange system and the external energy supplement system through pipelines, an environment monitoring system is arranged at a proper data acquisition position according to monitoring requirements of various parameters, and an electric control system 10 is arranged on.
The heat recovery system 40 comprises a cross-flow type gas-gas heat exchanger 41, a left air duct 42, a right air duct 43, an air inlet fan 44, an upper air duct 45, an upper elbow 46, a lower air duct 48, a lower elbow 49 and an air outlet fan 47, wherein the left end and the right end of a horizontal channel of the cross-flow type gas-gas heat exchanger 41 are respectively connected with the left air duct 42 and the right air duct 43, the right air duct 43 extends into the production cavity of the greenhouse, the air inlet fan 44 is arranged in the right air duct 43, the upper end and the lower end of a vertical channel of the cross-flow type gas-gas heat exchanger 41 are respectively connected with the upper air duct 45 and the lower air duct 48, the lower air duct 48 extends into the lower part of the production cavity of the greenhouse through the lower elbow 49, the top of the upper air duct 45 is provided with an upper elbow 46, the upper elbow 46 is higher than.
The arched truss 6 is provided with a lower chord to fix the phase change energy storage body 7, the lower chord is not horizontal, namely, the height of a high upright 24 and the height of a low upright 25 of the arched truss 6 are different, the height of the low upright 25 is lower than that of the high upright 24, in a northern hemisphere, if a greenhouse with a sunlight heating requirement exists, the greenhouse is suitable to be arranged in the north-south direction, an azimuth angle is between 20 degrees south-east and 20 degrees south-west, the high upright 24 is arranged on the north side, the low upright 25 is arranged on the south side, further, the lower chord of the arched truss 6 is high-south-low in the north direction, a phase change energy storage material packaging layer fixed on the lower chord of the arched truss 6 is high-south-low in the north direction, the phase change energy storage body 7 can receive sunlight irradiation conveniently, and the phase change energy storage body 7 divides the whole greenhouse into an upper.
The vault insulation coating 2 can be fixed at the top end of the arch truss 6 in a normally closed mode according to the climatic conditions of the place where the greenhouse is located and the requirements of crops planted, such as the greenhouse mainly taking cooling, if the vault insulation coating 2 is normally closed, a photovoltaic module can be installed on the upper portion of the vault insulation coating 2, and the top is comprehensively utilized for power generation; if the greenhouse needs heating mainly or heating and cooling, the vault insulation coating 2 is designed to be opened by the roller shutter 1, the phase change energy storage body 7 receives sunlight irradiation to heat as required, specifically, the vault insulation coating 2 has two forms, one of which is fixed, the vault insulation coating 2 is fixed on the arch truss 6, and during production operation, the vault insulation coating 2 is normally closed and is not opened; the second mode is a rolling curtain mode, a transparent plastic film covers the arch truss 6, a vault insulation covering layer 2 covers the transparent plastic film, the vault insulation covering layer 2 can be rolled up from the low upright post 25 to the high upright post 24 through the rolling curtain machine 1, when the rolling curtain type vault insulation covering layer 2 is rolled up, the temperature adjusting cavity is still closed, the high upright post 24 is located on one side, far away from the sun in winter, of the greenhouse, the low upright post 25 is located on one side, close to the sun in winter, of the greenhouse, and the height of the low upright post 25 is lower than that of the high upright post 24.
The phase-change energy storage body 7 comprises a phase-change energy storage layer, a packaging layer for packaging the phase-change energy storage layer, a water spraying pipe 23, a fan 3 and a water return pipe 8. The packaging layer is fixed on the lower chord of the arched truss 6 like a suspended ceiling, the water outlet and water collecting pipe 21 of the ground heat exchanger is connected with the water spraying pipe 23 through the water spraying pipe water valve 22, the water spraying pipe 23 is located above the packaging layer at the side of the high upright column 24, the water return pipe 8 is located below the packaging layer at the side of the low upright column 25 and used for receiving water flowing down from the surface of the packaging layer, the fan 3 is fixed on the web member of the arched truss 6, the color of the upper surface of the packaging layer is black, and the phase-change energy storage body 7 can absorb more heat under the irradiation of sunlight conveniently. The phase-change energy storage layer is made by selecting phase-change materials with corresponding phase-change temperatures according to the temperature requirements of the growth process of the main planted crops, namely the phase-change temperature of the correspondingly selected phase-change energy storage material is between 5 and 35 ℃, for example, the temperature of the greenhouse for planting oyster mushrooms is about 20 ℃.
The exogenous energy supplement system comprises a plurality of water storage tanks 14, exogenous coil heat exchangers 15 equal to the water storage tanks 14 in number, water storage tank water collecting pipes 13 and a water pump 16, wherein the exogenous coil heat exchangers 15 are installed in the water storage tanks 14, the inlet and outlet of the exogenous coil heat exchangers 15 are respectively connected with the outlet and return openings of external cold and hot energy sources in a sealing mode, and the water inlet of the water pump 16 and the outlet of the water storage tank water collecting pipes 13 are both located in the lower portions of the water storage tanks 14 and are connected with the water storage tanks 14 in a sealing mode.
The ground heat exchange system comprises a plurality of vertical ground heat exchangers 19, water inlet water distribution pipes 18 of the ground heat exchangers and water outlet water collection pipes 21 of the ground heat exchangers, water inlets of all the vertical ground heat exchangers 19 are hermetically connected with the water inlet water distribution pipes 18 of the ground heat exchangers, and water outlets of all the vertical ground heat exchangers 19 are hermetically connected with the water outlet water collection pipes 21 of the ground heat exchangers.
The earth energy balance system comprises a cooling tower 12, a water replenishing port 11, a water outlet pipe and a water inlet pipe, wherein the water replenishing port 11 and the water inlet pipe are positioned at the upper part of the cooling tower 12, and the water outlet is positioned at the lower part of the cooling tower 12.
During refrigeration, the vault insulation coating 2 is put down, cold water is pumped in the water spray pipe 23, the cold water is sprayed to the upper surface of the encapsulation layer of the phase change energy storage body 7 and flows down along the upper surface, the fan 3 is started, air enters from one side of the temperature adjusting cavity of the greenhouse and is discharged from the other side by promoting ventilation of the upper chamber, water evaporation on the surface of the encapsulation layer is accelerated, the water evaporation absorbs heat of the phase change energy storage body 7, the phase change energy storage material is changed from a liquid state to a solid state, and cold energy is accumulated; if the requirement on the refrigeration temperature is not high, the temperature can be reduced by only spraying cold water on the upper surface of the packaging layer of the phase-change energy storage body 7; if the outside temperature is lower than the temperature in the greenhouse, the heat recovery system 40 can be started to cool; when the temperature in the greenhouse is required to be reduced to be lower than the temperature of the outlet water of the buried pipe heat exchange system, if the temperature outside the greenhouse is higher than the temperature inside the greenhouse, the external source energy supplement system needs to be started, and cold energy is introduced into the external source coil pipe heat exchanger 15.
When heating, the vault insulation coating 2 is rolled up by the roller shutter machine 1, so that sunlight irradiates on the packaging layer of the phase change energy storage body 7, and the internal phase change material is melted after the packaging layer absorbs heat; if the outside temperature is higher than the temperature in the greenhouse and the temperature in the greenhouse needs to be raised, the heat recovery system 40 can be started to raise the temperature; if the temperature in the greenhouse is higher than the outside temperature and lower than the water outlet temperature of the buried pipe heat exchange system, the temperature in the greenhouse needs to be raised, the water pump 16 can be started, water flowing through the pipeline of the buried pipe heat exchange system is pumped in the water spraying pipe 23, the water is sprayed on the upper surface of the packaging layer of the phase change energy storage body 7, flows down along the upper surface, and is conducted to the phase change material inside through the upper packaging layer, so that the heat is conducted into the greenhouse.
If the internal temperature required by the greenhouse is lower than the external temperature and higher than the water outlet temperature of the buried pipe heat exchange system, and the temperature cannot rise through sunlight irradiation, the starting of the external energy supplement system is considered, heat energy is introduced into the external coil heat exchanger 15, and then the heat energy is transferred to the inside of the greenhouse through the phase change energy storage body 7.
Earth energy balance operation: when the geothermal energy temperature of one place is not utilized, the geothermal energy temperature is basically equal to the annual average temperature of the place, if the cold and hot use is unbalanced, particularly the refrigerating time is long, the temperature increasing time is short, and when the external temperature is lower than the outlet water temperature of the buried pipe heat exchange system, the water spray pipe water valve 22 is closed, the water valve 20 of the cooling tower is opened, and the high-temperature geothermal energy is released through the cooling tower 12, so that the geothermal energy temperature is kept stable.
Claims (9)
1. The utility model provides a phase transition energy storage greenhouse, includes arch truss, high stand, low stand, vault insulation coating and side wall insulation coating, arch truss's lower chord both ends set up respectively on high stand and low stand, form the greenhouse frame, arch truss coats and is stamped vault insulation coating, high stand, low stand and gable coat and have side wall insulation coating to form greenhouse, its characterized in that: the phase change energy storage body is arranged between the two adjacent arched trusses and divides the inner cavity of the greenhouse into an upper cavity and a lower cavity which are respectively a temperature adjusting cavity and a production cavity, and the influence of the change of the external temperature on the temperature in the production cavity is reduced through the temperature adjusting cavity.
2. A phase change energy storage greenhouse as claimed in claim 1, characterized in that: the phase-change energy storage body comprises a phase-change energy storage layer and an encapsulation layer for encapsulating the phase-change energy storage layer, and the phase-change energy storage layer is made of a phase-change energy storage material with the phase-change temperature of 5-35 ℃.
3. A phase change energy storage greenhouse as claimed in claim 2, characterized in that: still include spray pipe, fan and wet return, the encapsulated layer passes through the mode of furred ceiling and fixes on the lower chord of arch truss, the spray pipe setting corresponds the top of high stand one side and can be to the upper surface water spray of encapsulated layer at the encapsulated layer, the wet return setting corresponds the below of low stand one side and can receive the water that flows down from the encapsulated layer upper surface at the encapsulated layer, spray pipe and wet return link to each other with buried pipe heat transfer system respectively in order to accomplish water supply and drainage, the fan is fixed on the arch truss web member and can be blown the evaporation to the water on encapsulated layer surface.
4. A phase change energy storage greenhouse as claimed in claim 3, characterized in that: a water pump is arranged between the water return pipe and the buried pipe heat exchange system, the water pump pressurizes and injects water in the water return pipe into the buried pipe heat exchange system, the ground heat exchange system comprises a vertical ground heat exchanger, a water inlet distribution pipe of the ground heat exchanger and a water outlet collection pipe of the ground heat exchanger, the number of the vertical ground heat exchangers is multiple, water inlets of the vertical ground heat exchangers are respectively connected with the water inlet water distribution pipes of the ground heat exchangers in a sealing way, the water outlet of the vertical ground heat exchanger is respectively connected with the water outlet collecting pipe of the ground heat exchanger in a sealing way, the water spray pipe is hermetically connected with an outlet water collecting pipe of the buried pipe heat exchanger through a water spray pipe water valve, the water return pipe is hermetically connected with an inlet water distribution pipe of the buried pipe heat exchanger through a water storage tank, a water pump and a three-way reversing valve, so that the water spray pipe and the water return pipe respectively realize obtaining water supply from the vertical ground heat exchanger and discharging water into the vertical ground heat exchanger.
5. A phase change energy storage greenhouse as claimed in claim 4, characterized in that: an external source energy supplementing system is arranged between the water return pipe and the water pump, the external source energy supplementing system comprises a water storage tank, an external source coil pipe heat exchanger and a water storage tank water collecting pipe, the external source coil pipe heat exchanger is installed in the water storage tank, an inlet and an outlet of the external source coil pipe heat exchanger are respectively connected with an outlet and a return opening of external cold and hot energy sources in a sealing mode, the lower end of the water return pipe is communicated with the water storage tank or the water storage tank water collecting pipe in a sealing mode, a water inlet of the water pump and an outlet of the water storage tank water collecting pipe are both located at the lower portion of the water storage tank and are communicated with the water storage tank in a sealing mode, so that under certain conditions, when the temperature requirement in a greenhouse cannot be met through a buried pipe heat exchange system, air radiation and/or solar radiation, the external cold and hot energy sources conduct the cold, through the spray pipe, spray to the phase change energy storage body on, cold and hot energy conducts greenhouse inside through the phase change energy storage body to satisfy the needs of the interior temperature of greenhouse.
6. A phase change energy storage greenhouse as claimed in claim 5, characterized in that: the ground buried pipe heat exchanger is characterized in that a ground energy balance system is arranged between the water storage tank and the water outlet collecting pipe of the ground buried pipe heat exchanger, the ground energy balance system comprises a cooling tower and a water supplementing opening, the water supplementing opening is formed in the upper portion of the cooling tower, the water inlet end and the water outlet end of the cooling tower are respectively arranged on the upper side and the lower side of the cooling tower, the water inlet end of the cooling tower is communicated with the water outlet collecting pipe of the ground buried pipe heat exchanger through a water valve of the cooling tower, and the water outlet end of the cooling tower is communicated with the water storage tank through the water.
7. A phase change energy storage greenhouse as claimed in claim 6, characterized in that: the greenhouse is characterized by further comprising a heat recovery system fixed on one side wall of the high stand column, the heat recovery system comprises a cross-flow type gas-gas heat exchanger, a left air channel, a right air channel, an air inlet fan, an upper air channel, an upper elbow, a lower air channel, a lower elbow and an air outlet fan, the left end and the right end of a horizontal channel of the cross-flow type gas-gas heat exchanger are respectively connected with the left air channel and the right air channel, the right air channel extends into the greenhouse production cavity, the air inlet fan is arranged in the right air channel, the upper end and the lower end of a vertical channel of the cross-flow type gas-gas heat exchanger are respectively connected with the upper air channel and the lower air channel, the lower channel extends into the lower portion of the greenhouse production cavity through the lower elbow, the top of the upper air channel is.
8. A phase change energy storage greenhouse according to any of claims 1-7, characterized in that: the utility model discloses a greenhouse, including vault heat preservation coating, roller shutter machine, the vault is equipped with the transparent plastic film, and the vault heat preservation coating is rolled up from low stand to high stand through rolling up the curtain machine, and when making the roll up of roller shutter formula vault heat preservation coating, the chamber that adjusts the temperature still is confined outward, high stand is located the one side that keeps away from the sun winter of greenhouse, low stand is located the one side that is close to the sun winter of greenhouse, and the height that highly is less than high stand of low stand, the upper surface of phase change energy storage body encapsulation layer is equipped with the black coating, makes things convenient for the phase change energy storage body to accept sunshine and shines.
9. A phase change energy storage greenhouse according to any of claims 1-7, characterized in that: the vault insulation coating is fixed, the vault insulation layer is fixed on the arch truss, and the vault insulation coating is normally closed and is not opened during production operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010567131.3A CN111567277A (en) | 2020-06-19 | 2020-06-19 | Phase-change energy-storage greenhouse |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010567131.3A CN111567277A (en) | 2020-06-19 | 2020-06-19 | Phase-change energy-storage greenhouse |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115088520A (en) * | 2022-06-02 | 2022-09-23 | 西安交通大学 | Hydrated salt thermochemical adsorption heat storage solar greenhouse |
| CN115088520B (en) * | 2022-06-02 | 2024-04-26 | 西安交通大学 | Solar greenhouse with thermal chemical adsorption and heat storage of hydrated salt |
-
2020
- 2020-06-19 CN CN202010567131.3A patent/CN111567277A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115088520A (en) * | 2022-06-02 | 2022-09-23 | 西安交通大学 | Hydrated salt thermochemical adsorption heat storage solar greenhouse |
| CN115088520B (en) * | 2022-06-02 | 2024-04-26 | 西安交通大学 | Solar greenhouse with thermal chemical adsorption and heat storage of hydrated salt |
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