CN111820046A - PV/T shading device - Google Patents

PV/T shading device Download PDF

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Publication number
CN111820046A
CN111820046A CN202010754875.6A CN202010754875A CN111820046A CN 111820046 A CN111820046 A CN 111820046A CN 202010754875 A CN202010754875 A CN 202010754875A CN 111820046 A CN111820046 A CN 111820046A
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CN
China
Prior art keywords
iron ring
support frame
shading
valve
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010754875.6A
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Chinese (zh)
Inventor
李金平
韩肖星
程达
刘孝敏
黄娟娟
郑健
王昱
张学民
张东
任海伟
南军虎
李晓霞
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Lanzhou University of Technology
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Lanzhou University of Technology
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Filing date
Publication date
Application filed by Lanzhou University of Technology filed Critical Lanzhou University of Technology
Priority to CN202010754875.6A priority Critical patent/CN111820046A/en
Publication of CN111820046A publication Critical patent/CN111820046A/en
Pending legal-status Critical Current

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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
    • A01G9/22—Shades or blinds for greenhouses, or the like
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
    • 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
    • F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40—Thermal components
    • H02S40/42—Cooling means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40—Thermal components
    • H02S40/42—Cooling means
    • H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40—Thermal components
    • H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
    • 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
    • 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
    • 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
    • Y02E10/50—Photovoltaic [PV] energy
    • 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
    • Y02E10/60—Thermal-PV hybrids
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Soil Sciences (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The PV/T shading device aims to realize conversion and utilization of light and heat and photoelectricity while shading a greenhouse, eliminate contradiction conflict between crop photosynthesis and photovoltaic power generation and improve crop growth conditions, and comprises a support frame, a PV/T plate, an iron ring, a screw rod sleeve, a rope ring, a pull rope, a transmission device, a temperature sensor, a sunshine intensity meter, a flow meter, a valve, a water pump, a heat storage box, a water inlet pipe, a water outlet pipe, a three-way valve, a storage battery, a controller, an inverter, an alternating current load and a direct current load. The temperature sensor monitors indoor temperature change in real time, the shading area is adjusted in a mode that the PV/T devices on the two sides of the keel extend and contract, and meanwhile, the function of converting a part of PV/T into electric energy and heat energy is achieved. The greenhouse shading device has the advantages that the greenhouse shading can be realized, the photoelectric and photo-thermal conversion and utilization are realized, the fluctuation range of indoor temperature and humidity changes is reduced, and a good growth environment is provided for indoor crop growth.

Description

PV/T shading device
Technical Field
The invention relates to the technical field of greenhouses, in particular to a PV/T shading device.
Background
In the traditional agricultural greenhouse industry, the problems of temperature rise and heat preservation, power supply, benefit and the like are always key problems to be solved by farmers. Particularly in northwest of China, the temperature difference between day and night is large, and the growth and development of indoor crops are seriously influenced by overlarge indoor temperature fluctuation. With the advent of photovoltaic systems in the greenhouse industry, the dependence on fossil fuels has been greatly reduced. Reasonable shading and power generation can be simultaneously realized in the greenhouse with the photovoltaic.
Shading of the greenhouse can reduce the solar radiation within the greenhouse, thereby reducing the interior air temperature and relative humidity. The problem of excessive indoor temperature rise is solved. Further, energy can be saved by reducing the power consumed by the cooling load. However, shading by providing fixed photovoltaic modules on greenhouse roofs or roofs conflicts with the sunlight requirements of crop photosynthesis, and shading densities in excess of 40% during winter or cloudy days can reduce flowering and yield.
The Chinese invention has the patent names: an automatic folding and unfolding device and method for a greenhouse sunshade net are disclosed, and the application numbers are as follows: CN201811292994, this utility model discloses an automatic device and method of taking up and exhibition of warmhouse booth sunshade net, this system comprises big-arch shelter support frame, baffle, automatic mechanism and sunshade net of taking up and exhibiting, and this system realizes the automatic operation management of sunshade net according to the illumination demand of different crops, has reduced manual operation's intensity of labour, improves characteristics such as the productivity height of crops. However, there are some disadvantages: the automatic management increases the electric power cost, is not suitable for remote rural areas, only simply shades the greenhouse, and does not realize the functions of shading and energy utilization; and secondly, the sunshade net has short service cycle and is easy to weather, and resource waste is caused by using a large amount of sunshade net. The Chinese invention has the patent names: the utility model provides a flexible photovoltaic sunshade electric power storage integrated device and light and heat utilize system, the application number is: CN201910670990, the invention discloses a flexible photovoltaic sunshade and power storage integrated device and a photo-thermal utilization system, the system comprises a flexible PV/T cell panel, a flexible heat pipe, a heat conduction block, a heat collection pipe and the like, and the system can realize photo-thermal and photoelectric conversion and utilization while shading. However, the application of the PV/T integration technology to the greenhouse is blank and needs to be adapted according to local conditions. When the PV/T plate is fixed on a roof or a roof to generate heat, fixed indoor shadows are generated, and the quality and the yield of indoor crops are influenced.
Disclosure of Invention
The invention aims to realize the conversion and utilization of light and heat and photoelectricity while shading a greenhouse, eliminate contradiction conflict between crop photosynthesis and photovoltaic power generation and improve crop growth conditions.
The invention relates to a PV/T (photovoltaic/thermal) shading device, wherein each group of PV/T shading device comprises a support frame 1, a second iron ring 27 is welded at one end of the support frame, a sunshine intensity meter 10 and a PV/T plate 2 are fixed on the keel 11, a frame is arranged at the central line of the back of the PV/T plate 2, the second iron ring 27 and an internal pipeline 3 are welded, the PV/T plate 2 and the support frame 1 are connected through the second iron ring 27 and the first iron ring 5 by using a screw rod sleeve 4, a pull rope 8 is connected with a rope ring 6, and the pull rope 8 is connected with a transmission device 7; in the photothermal system, the heat storage tank 12 is connected with a water inlet pipe 18 and a water outlet pipe 19, and a second valve 15, a third valve 16, a first three-way valve 20 and a second three-way valve 21 are arranged on the water pipes; the flowmeter 13 is connected with the first valve 14 to meter the working medium flow of the heat storage tank 12, the water inlet pipe 18 is connected with the pump 17, and the temperature sensor 9 is hung indoors; in the photovoltaic system, a controller 23, the controller 23 is connected with a storage battery 22, a direct current load 26, a PV/T panel 2 and an inverter 24, and the inverter 24 is connected with an alternating current load 25.
Compared with the prior art, the invention has the beneficial effects that: 1. the greenhouse is shaded by combining a PV/T system, and the function of converting PV/T into heat energy and electric energy is realized. 2. The invention realizes the dynamic shading of the greenhouse, namely, the shading area is changed according to the indoor temperature change, and the influence of indoor shadow (generated by fixedly arranging the photovoltaic array on the roof or the roof) on the quality and the yield of crops is effectively relieved and reduced.
Drawings
Fig. 1 is a schematic structural diagram of the invention, fig. 2 is a schematic structural diagram of a greenhouse to which the invention is applied, and the reference numerals and corresponding names are as follows: the solar photovoltaic heat collector comprises a support frame 1, a PV/T plate 2, a built-in pipeline 3, a screw rod sleeve 4, a first iron ring 5, a rope ring 6, a transmission device 7, a pull rope 8, a temperature sensor 9, a sunshine intensity meter 10, a keel 11, a heat storage box 12, a flow meter 13, a first valve 14, a second valve 15, a third valve 16, a pump 17, a water inlet pipe 18, a water outlet pipe 19, a first three-way valve 20, a second three-way valve 21, a storage battery 22, a controller 23, an inverter 24, an alternating current load 25, a direct current load 26 and a second iron ring 27.
Detailed Description
As shown in fig. 1 and 2, the present invention is a PV/T shade device, each group of PV/T shade devices includes a support frame 1 welded and fixed on a keel 11, one end of the support frame is welded with a second iron ring 27, a sunshine intensity meter 10 and a PV/T panel 2 are fixed on the keel 11, a frame is arranged at the central line of the back of the PV/T panel 2, the second iron ring 27 is welded, an inner pipeline 3 is welded, the PV/T panel 2 and the support frame 1 are connected with a first iron ring 5 through the second iron ring 27 by using a screw rod sleeve 4, a pull rope 8 is connected with a rope ring 6, and the pull rope 8 is connected with a transmission device 7; in the photothermal system, the heat storage tank 12 is connected with a water inlet pipe 18 and a water outlet pipe 19, and a second valve 15, a third valve 16, a first three-way valve 20 and a second three-way valve 21 are arranged on the water pipes; the flowmeter 13 is connected with the first valve 14 to meter the working medium flow of the heat storage tank 12, the water inlet pipe 18 is connected with the pump 17, and the temperature sensor 9 is hung indoors; in the photovoltaic system, a controller 23, the controller 23 is connected with a storage battery 22, a direct current load 26, a PV/T panel 2 and an inverter 24, and the inverter 24 is connected with an alternating current load 25.
The present invention provides for the conversion of solar radiation 29 into approximately 6% -22% electrical energy 31 and 30% -67% thermal energy 30 while shading the greenhouse. In addition, in daytime, the indoor temperature is too high, and the heat storage box 12 is equivalent to a heat absorber and absorbs the heat of the surrounding environment; the heat radiator is equivalent to a heat radiator at night, and the indoor temperature is raised in a heat radiation mode.
As shown in fig. 1 and fig. 2, a first iron ring 5 is welded on the frame at the central line of the back of the PV/T panel 2, and the PV/T panel 2 is connected with the support frame 1 into a whole by a screw rod sleeve 4 passing through the first iron ring 5 and the second iron ring 27.
As shown in fig. 1 and 2, the PV/T panel 2 is used to convert solar radiation energy into electric energy and heat energy by connecting the storage battery 22 and the heat storage tank 12 during shading.
As shown in FIG. 1, the transmission device 7 can be replaced by a motor to control and drive the pull rope 8 to stretch and contract the PV/T device, and the process can also be controlled by a PLC circuit.
As shown in fig. 1, the pulling rope 8 pulls the PV/T panel 2 to stretch and contract in the range of 0 ° to 90 ° around the support frame 1.
In the PV/T panel 2, as shown in FIGS. 1 and 2, the photovoltaic cells are single crystal silicon, or polycrystalline silicon, or amorphous silicon thin film cells.
As shown in fig. 1 and 2, the support frame 1 is welded on the greenhouse keel 11, the cross bar at one end is welded with the second iron ring 27, the central line of the back of the PV/T panel 2 is provided with the frame, the first iron ring 5 is welded, the screw rod sleeve 4 penetrates through the first iron ring 5 at the back of the PV/T panel 2 and the iron ring at the end of the support frame 1, and the PV/T panel 2 is connected with the support frame 1 to rotate around the shaft. The first valve 14 is opened, the working medium enters the heat storage tank 12, a flow meter 13 is arranged in a pipeline of the heat storage tank 12, a water inlet pipe 18 is connected with a pump 17, the water inlet pipe 18 is provided with a first three-way valve 20, and the working medium is conveyed into a pipeline 3 and a pipeline 28. The pump 17 drives working media to circularly absorb heat near the photovoltaic module, so that the temperature of the heat storage box 12 is increased, the surface temperature of the photovoltaic module can be reduced, and the photoelectric efficiency is improved. In the illumination process, the photovoltaic module on the surface of the PV/T plate 2 converts PV/T into electric energy through a photoelectric effect and stores the electric energy in the storage battery 22, the storage battery 22 is connected with the controller 23 and the direct current load 26, and the controller 23 can effectively prevent the storage battery 22 from generating an over-charge and over-discharge phenomenon. In order to meet the requirements of users, an inverter 24 is connected in the circuit, and the inverter 24 converts direct current into alternating current required by the users and directly inputs the alternating current into an alternating current load 25.
The PV/T plate 2 stores input energy (solar radiation) of a system into a heat storage box 12 and a storage battery 22 respectively in a heat energy and electric energy mode, a first iron ring 5 is welded below a frame at the central line of the back of the PV/T plate 2, the PV/T plate 2 is fixed on a support frame 1 and is enabled to incline in a range of 0-90 degrees around a cross rod of the support frame 1 through a screw rod sleeve 4 passing through the first iron ring 5 and a second iron ring 27 on the cross rod of the support frame 1, a pull rope 8 connected with the rope ring 6 is pulled through a transmission device 7 so as to achieve shading in different areas, the support frame 1 is distributed on two sides of a keel 11, and a sunshine intensity meter 10 is installed above the keel 11 to measure and monitor indoor solar radiation. The heat storage tank 12 is connected with the PV/T plate 2 through a water inlet pipe 18 and a water outlet pipe 19, the heat storage tank is connected with a flow meter 13, working media are input into the heat storage tank by opening a first valve 14, a second valve 15 is connected with a pump 17, the pump 17 is connected with a first three-way valve 20, a second three-way valve 21 is connected into the water outlet pipe 19, and the working media are driven to perform circulating heat exchange in the system. The storage battery 22 is connected with the PV/T board 2 for storing electric energy, the controller 23 is connected to avoid over-charging and over-discharging of the storage battery 22, the controller 23 is connected with the direct current load 26, or the inverter 24 is connected to meet the power demand of farmers, and direct current is converted into alternating current to be input into the alternating current load end 25.
The driving device 7 for pulling the pulling rope 8 to expand and contract can be a motor.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several equivalents and modifications may be made without departing from the principle of the present invention, and these equivalents and modifications should also be included in the protection scope of the present invention.

Claims (6)

  1. The PV/T shading device is characterized in that each PV/T shading device group comprises a support frame (1), the support frame is welded and fixed on a keel (11), an iron ring (27) is welded at one end of the support frame, a sunshine intensity meter (10) and a PV/T plate (2) are fixed on the keel (11), a frame is arranged at the central line of the back of the PV/T plate (2), a second iron ring (27) is welded, an inner pipeline (3) is arranged, the PV/T plate (2) and the support frame (1) are connected with a first iron ring (5) through the second iron ring (27) by utilizing a screw rod sleeve (4), a rope ring (6) is connected with a pull rope (8), and the pull rope (8) is connected with a transmission device (7); in the photo-thermal system, a heat storage box (12) is connected with a water inlet pipe (18) and a water outlet pipe (19), and a second valve (15), a third valve (16), a first three-way valve (20) and a second three-way valve (21) are arranged on the water pipe; the flowmeter (13) is connected with a first valve (14) to measure the working medium flow of the heat storage tank (12), the water inlet pipe (18) is connected with a pump (17), and the temperature sensor (9) is hung indoors; in the photovoltaic system, a controller (23), the controller (23) is connected with a storage battery (22), a direct current load (26), a PV/T panel (2) and an inverter (24), and the inverter (24) is connected with an alternating current load (25).
  2. 2. The PV/T shade device according to claim 1, wherein: a first iron ring (5) is welded on a frame at the central line of the back of the PV/T plate (2), and the PV/T plate (2) and the support frame (1) are connected into a whole through a screw rod sleeve (4) passing through the first iron ring (5) and the second iron ring (27).
  3. 3. The PV/T screening arrangement according to claim 1, characterized in that the PV/T panels (2) are used to convert solar radiation energy into electrical energy and thermal energy, respectively, during screening by connecting batteries (22) and thermal storage tanks (12).
  4. 4. The PV/T screening device according to claim 1, wherein the transmission means (7) can be replaced by an electric motor for controlling the driving of the pulling rope (8) for stretching and retracting the PV/T device, which process can also be controlled by the PLC circuit.
  5. 5. The PV/T screening apparatus according to claim 1, wherein the pulling string (8) pulls the PV/T panel (2) to extend and contract around the support frame (1) within a range of 0 ° to 90 °.
  6. 6. The PV/T screening arrangement according to claim 1, wherein the PV/T panels (2) are of monocrystalline silicon, or polycrystalline silicon, or amorphous silicon thin film cells.
CN202010754875.6A 2020-07-31 2020-07-31 PV/T shading device Pending CN111820046A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112640703A (en) * 2021-02-04 2021-04-13 兰州理工大学 Solar double-sided photovoltaic power generation internal shading system for greenhouse
CN112640704A (en) * 2021-02-04 2021-04-13 兰州理工大学 Solar internal shading system for greenhouse
WO2023285227A1 (en) * 2021-07-15 2023-01-19 Totalenergies Se Solar system

Citations (10)

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CN101116410A (en) * 2006-12-22 2008-02-06 万尤宝 Process for regulating carbon dioxide concentration in air and inhibiting greenhouse effect and the device thereof
CN203748339U (en) * 2014-03-15 2014-08-06 云南嘉力达节能咨询有限公司 Solar photovoltaic photo-thermal energy storage and heat preservation adjustment and control device
CN203884310U (en) * 2014-05-20 2014-10-22 张家港永联天天鲜配送有限公司 Novel self-circulation greenhouse
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