Plant factory in arid climate region and multidirectional temperature control method thereof

Abstract

The invention discloses a plant factory in an arid climate region and a multi-directional temperature control method, and the plant factory comprises an air channel which is formed by communicating a chimney through pipe and a vortex flow through pipe; the other end of the heat exchange reaction device is connected with an air conditioning unit; the other end of the first heat exchange pipe is connected with an energy adjusting device, and the energy adjusting device communicates with the transistor-like water energy collector through a pipeline and communicates with the heat exchange reaction device through a first valve and a second valve. Cooling in daytime: introducing low-temperature gas into the heat exchange reaction device for pre-cooling; the first valve and the second valve are opened, the water tank and the micro-channel heat exchanger form a loop, and the fan is started to promote cooling. A third valve and a water pump are opened, and the water tank and the phase change heat storage box body form a loop for heat exchange; the first valve and the second valve are opened, the water tank and the micro-channel heat exchanger form a loop, and the fan is started to promote temperature rise.

Description

Technical Field

[0001] The invention relates to the field of cultivation devices, in particular to a plant factory in an arid climate zone and a multi-directional temperature control method. Background Art

[0002] As a clean, renewable new energy source, solar energy has a high utilization value today as traditional fossil fuels are becoming increasingly depleted. The solar energy products currently available on the market, such as LED solar lighting, solar water heaters, etc., are already quite mature in technology, but the development of energy-saving projects related to solar energy still has a very broad prospect. Combining photovoltaic thermal technology with radiation cooling technology to achieve temperature control of agricultural equipment is also one of the areas with great exploration value. Various new types of solar greenhouse cases are common, but the combined application of photovoltaic thermal technology and radiation cooling technology in closed plant factories is relatively rare.

[0003] Research shows that the photovoltaic-thermal integrated device has a compact structure and can significantly improve the utilization of solar energy; however, the problems of insufficient heat collection and untimely heat dissipation will affect the working efficiency of solar collectors and photovoltaic panels. Phase change materials are excellent energy storage and heat transfer materials. Using ambient temperature changes to control the absorption and release of heat to achieve indoor temperature control is one of the ways to achieve the energy-saving goals of plant factories. Therefore, the rational use of phase change materials' heat transfer and heat storage functions to reduce the heat dissipation problems caused by photovoltaic-thermal integration is a way to improve the performance of both heat collection and power generation.

[0004] The vertical air flow has a significant impact on the temperature and humidity of the space. The temperature and humidity conditions inside the plant factory are crucial to the normal growth of crops. The temperature range suitable for crop growth is 10℃-35℃, and the humidity range is 40%-60%. Too high or too low temperature and humidity will threaten the survival and growth of crops. The active or passive systems currently used for agricultural temperature and humidity control have a single function, discrete position, and poor adjustability, resulting in slightly poor vertical air flow in the application space of the plant factory, uneven temperature and humidity distribution, and obvious local differences. In addition, the establishment of heating and cooling devices will encroach on the plant planting space or have high requirements for certain key materials, which will affect the production efficiency of the plant factory to a certain extent. This is also a problem that should be considered in three-dimensional crop cultivation.

[0005] Taking into account the climate characteristics of the continental climate zone, which is dry, rainy, low in humidity, and with a large temperature difference between day and night, by utilizing its abundant light energy resources, combining photovoltaic and solar thermal utilization technology (PVT), radiation cooling technology (RC), and hydroelectric transistor power generation technology (LA-TEG), and supplemented by phase change materials and water as heat storage and heat transfer devices, it is possible to achieve the coordinated production of light, heat, water, and electricity required to maintain the operation of the plant factory, and ensure the efficient and energy-saving operation of the heating, cooling, and power supply cycle of the plant factory. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the problem mentioned above and / or existing in the prior art that combining photovoltaic thermal technology with radiation cooling technology to achieve temperature control of agricultural equipment is also one of the areas with great exploration value, the present invention is proposed.

[0008] Therefore, the technical problem to be solved by the present invention is to combine the relevant devices of photovoltaic thermal technology and radiation cooling technology in a manner that conforms to the temperature control operation logic of the plant factory.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: A plant factory in an arid climate zone, comprising a vegetation area and a wall, characterized in that:

[0010] The air passage is composed of a chimney passage and a vortex passage;

[0011] The end of the chimney pipe is a cold air outlet, the end of the vortex flow pipe is a hot air outlet, the cold air outlet is connected to a heat exchange reaction device, and the hot air outlet is connected to a first heat exchange pipe;

[0012] The other end of the heat exchange reaction device is connected to an air conditioning unit;

[0013] The other end of the first heat exchange tube is connected to an energy regulating device, which is connected to the transistor-like water energy collector through a pipeline and to the heat exchange reaction device through a first valve and a second valve.

[0014] As a preferred solution of the arid climate zone plant factory described in the present invention, wherein: a microchannel heat exchanger and a fan are arranged in the heat exchange reaction device;

[0015] The inlet and outlet of the microchannel heat exchanger are connected to the first valve and the second valve respectively.

[0016] As a preferred solution of the arid climate zone plant factory described in the present invention, the energy regulating device includes a phase change heat storage box, a water tank arranged under the phase change heat storage box, and a photovoltaic thermal panel group laid flat on the top slope of the phase change heat storage box.

[0017] As a preferred solution of the arid climate zone plant factory described in the present invention, wherein: the water tank is externally provided with a second heat exchange tube, the second heat exchange tube is placed in the phase change heat storage tank and is provided with a third valve and a water pump at both ends respectively;

[0018] The water tank is further connected to a spare water tank through a fourth valve, and the spare water tank is connected to a heating pipe.

[0019] As a preferred solution of the arid climate zone plant factory described in the present invention, wherein: a radiation cooling water intake device is movably connected to one side of the wall through a rocker mechanism;

[0020] The radiation cooling water intake device is connected to the transistor-like water energy collector through a pipeline. The transistor-like water energy collector is provided with a collection pool, and the collection pool is connected to the water tank through a pipeline.

[0021] As a preferred solution of the arid climate zone plant factory described in the present invention, the air conditioning unit includes an adjustable expansion valve, a condenser, a compressor, and an evaporator which are interconnected through a refrigerant pipeline;

[0022] The evaporator is communicated with the heat exchange reaction device, and a three-position four-way reversing valve is provided at the compressor.

[0023] As a preferred solution of the arid climate zone plant factory described in the present invention, a control valve and a start-stop valve are provided at the connection between the chimney pipe and the vortex flow pipe;

[0024] The chimney through-pipe inlet is provided with a curved surface aperture, and a humidity regulating plate is further provided inside the pipe.

[0025] The beneficial effects of the present invention are as follows: through reasonable equipment arrangement and use, a complete working system of photovoltaic-thermal integration, phase change heat storage and solar water heating technology is formed, as well as radiation cooling and water and electricity production.

[0026] Given the abundant solar energy resources, by combining photovoltaic, solar thermal utilization technology, radiation refrigeration technology, hydropower transistor power generation technology, and supplemented by phase change materials and water as heat storage and heat transfer devices, it is possible to achieve the coordinated production of light, heat, water, and electricity required to maintain the operation of plant factories, and ensure the efficient and energy-saving operation of the plant factory's heating, cooling, and power supply cycle.

[0027] Therefore, the technical problem to be solved by the present invention is to integrate and upgrade photovoltaic thermal technology, phase change heat storage technology, radiation refrigeration technology, and water energy utilization technology through a special temperature control method to ensure efficient heating, cooling, and power supply in the plant factory cycle.

[0028] To solve the above technical problems, the present invention also provides the following technical solutions: a multi-directional temperature control method, including the plant factory in an arid climate zone, and daytime cooling: the high-temperature gas in the vegetation area passes through the chimney pipe to the junction port with the vortex flow pipe, the high-temperature gas enters the vortex flow pipe through the control valve, and the low-temperature gas enters the heat exchange reaction device through the cold air outlet for precooling;

[0029] The first valve and the second valve are opened, the water tank and the microchannel heat exchanger form a loop, and the fan is turned on to promote cooling.

[0030] Heating at night: opening the third valve and the water pump, so that the water tank and the phase change heat storage tank form a loop for heat exchange;

[0031] The first valve and the second valve are opened, the water tank and the microchannel heat exchanger form a loop, and the fan is turned on to promote temperature rise.

[0032] As a preferred solution of the multi-directional temperature control method of the present invention, wherein: the radiation cooling water intake device reflects infrared radiation with a wavelength of 8μm-13μm and sunlight with a wavelength of 0.3μm-2.5μm;

[0033] The 0.3 μm-2.5 μm wavelength sunlight reflected by the radiation cooling water intake device is projected onto the photovoltaic thermal panel group for supplementary lighting;

[0034] The infrared radiation with a wavelength of 8 μm-13 μm reflected by the radiation cooling water intake device is projected onto the photovoltaic thermal panel group and reflected into the air for secondary reflection to perform radiation cooling.

[0035] As a preferred solution of the multi-directional temperature control method of the present invention, wherein: the photovoltaic thermal panel group is placed obliquely on the wall, with the horizontal center line of the bottom surface as the boundary;

[0036] The phase change heat storage box is located on the upper side of the transverse center line of the bottom surface of the photovoltaic thermal panel group, and the heating tube is located on the lower side of the transverse center line of the bottom surface of the photovoltaic thermal panel group.

[0037] As a preferred solution of the multi-directional temperature control method of the present invention, the high-temperature gas flows along the vortex flow tube and the first heat exchange tube into the phase change heat storage box to store heat energy for nighttime heating.

[0038] As a preferred solution of the multi-directional temperature control method of the present invention, wherein: the radiation cooling water intake device condenses water vapor during the day and captures water vapor at night to produce water;

[0039] The water generated by the radiation cooling water intake device drips into the collection pool in the transistor-like water energy collector through a pipeline, and is converted into electrical energy through gravitational potential energy during the process.

[0040] As a preferred solution of the multi-directional temperature control method of the present invention, when the water tank and the phase change heat storage tank form a loop:

[0041] The water in the water tank flows through the phase change heat storage tank to exchange heat therewith, and enters the microchannel heat exchanger to be heated;

[0042] When the water temperature in the water tank is lower than the air temperature:

[0043] Open the fourth valve to replenish water and increase the temperature.

[0044] As a preferred embodiment of the multi-directional temperature control method of the present invention, when the temperature reduction range does not reach the normal growth temperature of the plant:

[0045] Turn on the compressor and the adjustable expansion valve, and place the three-position four-way reversing valve in the first operating position to allow the refrigerant in the refrigerant pipeline to flow counterclockwise;

[0046] At this time, the refrigerant absorbs the heat in the heat exchange reaction device when flowing through the evaporator to assist in cooling.

[0047] As a preferred embodiment of the multi-directional temperature control method of the present invention, when the temperature rise range does not reach the normal growth temperature of the plant:

[0048] Turn on the compressor and the adjustable expansion valve, and place the three-position four-way reversing valve in the third operating position to allow the refrigerant in the refrigerant pipeline to flow clockwise;

[0049] At this time, the refrigerant flows through the evaporator and releases heat into the heat exchange reaction device to assist in temperature increase.

[0050] The beneficial effects of the present invention are: the daytime heat storage and nighttime heat release are improved, meeting the demand for nighttime heating under the background of significant day-night temperature difference in continental climate zones; the combined application of multiple heat transfer methods can improve the efficiency of photovoltaic power generation, thereby effectively reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0052] Figure 1 A schematic diagram of the basic structure of a plant factory in an arid climate zone according to an embodiment of the present invention;

[0053] Figure 2 A detailed structural diagram of an energy storage and heat exchange part of a plant factory in an arid climate zone according to an embodiment of the present invention;

[0054] Figure 3 A schematic diagram of the working process of a plant factory in an arid climate zone in a daytime heat absorption and cooling state according to an embodiment of the present invention;

[0055] Figure 4 A schematic diagram of the working process of a plant factory in an arid climate zone in a heat release state at night according to an embodiment of the present invention;

[0056] Figure 5 An air compressor in a plant factory in an arid climate zone and a schematic diagram of its pipeline layout details according to an embodiment of the present invention;

[0057] Figure 6 A temperature linear variation diagram of heat dissipation in a plant factory in an arid climate zone without an air duct design according to an embodiment of the present invention;

[0058] Figure 7 A temperature linear variation diagram of heat dissipation under an air duct design in a plant factory in an arid climate zone according to an embodiment of the present invention;

[0059] Figure 8 This is a diagram illustrating the configuration position of a photovoltaic thermal panel group with respect to PCM in a plant factory in an arid climate zone according to an embodiment of the present invention. DETAILED DESCRIPTION

[0060] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0061] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0062] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0063] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0064] Example 1

[0065] Reference Figure 1-4 This embodiment provides a plant factory in an arid climate zone, including a vegetation area P and a wall A. The vegetation area P is the area where the planted plants are located, and the wall A is an external frame for temperature control. The frame is equipped with most of the temperature control devices. Among them, the air channel 100 is the channel at the bottom where the gas floating upward from the vegetation area P is sucked in. The chimney pipe 101 and the vortex flow pipe 102 are connected. The chimney pipe 101 is at the bottom and the vortex flow pipe 102 is at the top. The combination of the two is in a "foot shape". Its structure can be clearly seen from the attached figure;

[0066] Furthermore, the end of the chimney pipe 101 is a cold air outlet 101a, and the end of the vortex flow pipe 102 is a hot air outlet 102a. As can be seen from the figure, the cold and hot separation ports serve as side air inlets, where the cold air enters the next system, and the hot air continues upward to enter the vortex flow pipe 102;

[0067] Regarding the chimney duct 101 and vortex duct 102 of the "foot-shaped" structure, the chimney duct 101 is a duct that utilizes its internal winding crankshaft, which allows the gas to form high-pressure and low-pressure areas in the pipeline. The pressure difference gives the gas an upward discharge speed, and when the low-pressure area is close to the ground, the temperature rises to obtain a greater exhaust speed again, making the temperature control more efficient and the response faster.

[0068] The vortex flow tube 102 is constructed as a three-way pipe. The air entering through the side air inlet is accelerated through the chimney pipe 101 to form compressed gas, which forms inner and outer circles of high and low temperature vortices. At the tapered end of the subsequent control valve 104, under the adjustment of the tapered head, the high temperature vortex of the outer circle enters the vortex flow tube 102 and goes to the hot air outlet 102a, and the low temperature vortex of the inner circle accumulates and is then squeezed into the cold air outlet 101a from the other end of the pipe.

[0069] Further, in detail, the cold air outlet 101a is connected to the heat exchange reaction device 200, and the hot air outlet 102a is connected to the first heat exchange pipe 103. The function of the heat exchange reaction device 200 is mainly to directly cool down, form heat exchange and act on the plants below, or to heat up and discharge the high-temperature gas from the chimney pipe 101. The first heat exchange pipe 103 is a simple air passage, which is connected for use.

[0070] Furthermore, the other end of the heat exchange reaction device 200 is connected to an air conditioning unit 500, and the function of the air conditioning unit 500 is mainly to perform adaptive adjustment when the conventional process is not sufficient to meet the current temperature required by the plant;

[0071] Furthermore, the other end of the first heat exchange tube 103 is connected to an energy regulating device 300, which is connected to the transistor-like water energy collector 400 through a pipeline and to the heat exchange reaction device 200 through a first valve 201 and a second valve 202. The energy regulating device 300 is used to store and release heat, and the transistor-like water energy collector 400 is mainly used to recycle the liquid product caused by temperature changes. At this time, the connection method of the main regulating components has been connected in series, and the entire operating system forms a complete workflow under a certain logic.

[0072] Example 2

[0073] Reference Figure 1-4 , which is the second embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: a microchannel heat exchanger 203 and a fan 204 are arranged in the heat exchange reaction device 200, wherein the microchannel heat exchanger 203 is a commonly used tubular temperature control component, which is closely arranged through extremely small pipes to enhance the efficiency of heat exchange, and the fan 204 is used to more efficiently act on the plants and pipe system below;

[0074] Furthermore, the inlet and outlet of the microchannel heat exchanger 203 are respectively connected to the first valve 201 and the second valve 202, and the two valves are connected to the energy regulating device 300, so whether the microchannel heat exchanger 203 exchanges heat and the heat exchange method depends on the energy regulating device 300 above.

[0075] Furthermore, the energy regulating device 300 includes a phase change heat storage tank 301, a water tank 302 placed under the phase change heat storage tank 301, and a photovoltaic thermal panel group 303 laid flat on the top slope of the phase change heat storage tank 301. The phase change heat storage tank 301 is a heat storage body that can absorb and store process residual heat, waste heat and solar energy, and release it when needed, and has the ability to change its physical state within a certain temperature range. Taking the solid-liquid phase change as an example, when heated to the melting temperature, a phase change from solid to liquid occurs. During the melting process, the phase change heat storage body absorbs and stores a large amount of latent heat; when the phase change heat storage body is cooled, the stored heat must be dissipated to the environment within a certain temperature range, and a reverse phase change from liquid to solid is performed. The present technical solution uses, but is not limited to, phase change heat storage through solid-liquid phase change.

[0076] In detail, after the temperature of the water in the water tank 302 is adjusted, it enters the microchannel heat exchanger 203 through the first valve 201 and the second valve 202 to adjust the temperature environment of the plants below; and the temperature adjustment is achieved by heat exchange between the liquid inside it and the phase change heat storage tank 301. With the assistance of the heat source photovoltaic thermal panel group 303, the phase change heat storage tank 301 stores heat during the day and releases heat at night.

[0077] Furthermore, the water tank 302 is provided with a second heat exchange tube 302a outside, the second heat exchange tube 302a is placed in the phase change heat storage tank 301 and is provided with a third valve 302a-1 and a water pump 302a-2 at both ends. When the temperature of the liquid inside the water tank 302 needs to be adjusted, the valve and the water pump are opened to allow the liquid inside to enter the second heat exchange tube 302a for circulation, and the water in the heat exchange tube is gradually temperature-adjusted, thereby forming a heat exchange effect.

[0078] In detail, the water tank 302 is connected to a spare water tank 302 through a fourth valve 302b, and the spare water tank 302 is connected to a heating pipe 304a. By opening the fourth valve 302b, the water lost in the water tank 302 during the heat exchange and flow circulation process can be replenished. The heating pipe 304a makes it possible to replenish high-temperature hot water.

[0079] Example 3

[0080] Reference Figure 1-4, which is the third embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: a radiation cooling water intake device 600 is movably connected to the backlight side of the wall A through a rocker mechanism, and is a composite device formed by stacking multiple layers of partition materials, and is composed of a light-transmitting PDMS-PET TRC film, a perforated insulation board, and a selective solar absorber partition. The surface of the composite partition of the three is provided with a PE protective film, and a water-absorbing material and a fin radiator are provided at the bottom. An insulating shell is also provided outside the entire device. The inclination angle can be adjusted with the assistance of a rocker mechanism to increase the adjustment flexibility, which is used to cope with the daily changes in the solar azimuth and solar altitude angle and to adjust the supplement of sunlight to the photovoltaic thermal panel group.

[0081] The radiation cooling water intake device 600 is connected to the transistor-like water energy collector 400 through a pipeline. The radiation cooling water intake device will collect water vapor through other internal components while absorbing sunlight, and condense the captured water vapor to form water again at night. A collection pool 401 is provided in the transistor-like water energy collector 400. Water droplets enter the collection pool 401 under the guidance of the collection pool 401. The collection pool 401 is connected to the water tank 302 through a pipeline. Excessive accumulated water will be directly guided into the water tank to form a cycle for secondary utilization.

[0082] Example 4

[0083] Reference Figure 1-4 , which is the fourth embodiment of the present invention, and is based on the previous embodiment, and is different from the previous embodiment in that: the air conditioning unit 500 includes an adjustable expansion valve 501 that is connected to each other through a refrigerant pipeline, which cools and reduces the pressure of the refrigerant, a condenser 502, which cools and condenses the high-temperature and high-pressure gas or steam into liquid to release heat, a compressor 503 that pressurizes the refrigerant, and an evaporator 504, which has the opposite effect of the condenser 502, and the gasified liquid absorbs heat and releases cold;

[0084] Furthermore, the evaporator 504 is connected to the heat exchange reaction device 200. When required, the evaporator 504 exchanges functions with the condenser to release heat or cold air into the plant factory. A three-position four-way reversing valve 503a is provided at the compressor 503.

[0085] Furthermore, a control valve 104 and a start-stop valve 105 are provided at the connection between the chimney pipe 101 and the vortex flow pipe 102. The control valve 104 is used to achieve cold and hot separation, and the start-stop valve 105 controls whether the upper and lower pipes are connected. When releasing heat, the hot gas is allowed to pass through the chimney pipe 101 instead of the vortex flow pipe 102.

[0086] In detail, a curved aperture is provided at the entrance of the chimney duct 101, and a humidity regulating plate 101b is provided inside the duct. The curved aperture enhances the flow efficiency of the gas, and the humidity of the gas is controlled by the humidity regulating plate to prevent the transport speed from being affected.

[0087] Example 5

[0088] Reference Figure 1-4 , which is the fifth embodiment of the present invention, this embodiment provides a multi-directional temperature control method. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that the temperature control process and method change according to day and night.

[0089] Daytime cooling: When the temperature is too high during the day, the air near the ground inside the plant factory will pass through the chimney pipe 101. Under the guidance of the curved inlet, the high-temperature gas in the vegetation area P passes through the chimney pipe 101 to the cold air outlet 101a. The high-temperature gas passes through the control valve 104 and enters the vortex flow pipe 102. The low-temperature gas heat exchange reaction device 200 is pre-cooled. When the cold air enters the heat exchange reaction device 200, the hot gas passes through the vortex flow pipe 102 and enters the energy regulating device 300 for heat storage.

[0090] Furthermore, the first valve 201 and the second valve 202 are opened, and the water tank 302 and the microchannel heat exchanger 203 form a loop. The water in the water tank 302 enters the microchannel heat exchanger 203, and under the stimulation of the heat exchanger, releases cold air to the vegetation area P of the plant factory below. The fan 204 is turned on to promote cooling and air circulation.

[0091] Heating at night: Open the third valve 302a-1 and the water pump 302a-2, open the second heat exchange pipe 302a channel, and let the water in the water tank 302 enter the circulation. At this time, the water in the water tank 302 forms a loop with the phase change heat storage tank 301 to exchange heat. The heat absorbed by the phase change heat storage tank 301 during the day is released at night and used for the heat exchange process;

[0092] Further, the first valve 201 and the second valve 202 are opened, and the water tank 302 and the microchannel heat exchanger 203 form a loop in the same way as the cooling control, so that hot water enters the microchannel heat exchanger 203, and the fan 204 is turned on to promote temperature rise.

[0093] Example 6

[0094] Reference Figure 1-4 and Figure 7 , which is the fifth embodiment of the present invention, and provides a multi-directional temperature control method. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the arrangement of the pipes inside the wall can be Figure 5As can be seen from the structure, an air compressor is provided at the junction of the chimney duct 101 and the vortex flow duct 102, where the flow is diverted, to further enhance the efficiency of air circulation and the control efficiency of the flow diversion.

[0095] Example 7

[0096] Reference Figure 1-6 and Figure 8 , which is the sixth embodiment of the present invention, this embodiment provides a multi-directional temperature control method. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the radiation cooling water intake device 600 reflects infrared radiation with a wavelength of 8μm-13μm and sunlight with a wavelength of 0.3μm-2.5μm.

[0097] In detail, thermal radiation is usually transmitted from a high-temperature heat source to a low-temperature heat source. Objects on the earth's surface (i.e., cooling objects) can use outer space (~3K) as a sustainable cold source to continuously obtain cold energy. However, only a small part of the surface infrared radiation (8-13μm) can pass through the atmosphere, and infrared radiation outside the 8-13μm wavelength will be absorbed by the atmosphere and produce a net infrared radiation heat exchange with the atmosphere. Therefore, infrared radiation in the 8-13μm band can bring positive cooling benefits to emitters above the ambient temperature. Compared with the significant improvement in the cooling effect of traditional radiation refrigeration materials, this feature can assist it in reflecting sunlight with a wavelength of 0.3μm-2.5μm to the photovoltaic thermal panel group 303, while reducing its own surface temperature, avoiding excessive temperature of the photovoltaic panel group 303, and also contributing to the formation of water vapor.

[0098] Furthermore, the sunlight with a wavelength of 0.3 μm-2.5 μm reflected by the radiation cooling water intake device 600 is projected onto the photovoltaic thermal panel group 303 for supplementary light, which is used to absorb and store the heat generated by the operation of the photovoltaic thermal panel group, thereby avoiding the disadvantage that the device cannot work at night;

[0099] The photovoltaic thermal panel group 303 is placed obliquely on the wall A, with the horizontal center line of the bottom surface as the boundary;

[0100] The phase change heat storage box 301 is located on the upper side of the horizontal center line of the bottom surface of the photovoltaic thermal panel group 303, and the heating tube 304a is located on the lower side of the horizontal center line of the bottom surface of the photovoltaic thermal panel group 303. This arrangement can make the heat dissipation efficiency of the photovoltaic thermal panel group 303 better and ensure its operation efficiency. The integration effect of the spare water tank 304 and the heating tube 304a is basically equivalent to a solar water collector. The arrangement of this phase change energy storage device and the solar water collector can be regarded as a PCM phase change energy storage solar water heater. The photovoltaic thermal panel group 303 has three situations at this time: the basic configuration without the PCM phase change energy storage solar water heater, two configurations with PCM, the second configuration with PCM fully contacting the absorption plate, and the second configuration with PCM only laid along the absorption plate on the upper side. For details, please refer to Figure 8 content.

[0101] The basic configuration is not considered. Compared with the first configuration, most of the PCM in the second configuration is melted, and the heat exchange effect is better, so this configuration is selected.

[0102] Example 8

[0103] Reference Figure 1-6 , which is the seventh embodiment of the present invention, and this embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the radiation cooling water intake device 600 condenses water vapor during the day and captures water vapor at night to generate water;

[0104] The water generated by the radiation cooling water intake device 600 drips into the collection pool 401 in the transistor-like water energy collector 400 through a pipeline, and is converted into electrical energy through gravitational potential energy during the process.

[0105] On the basis of the reflector, a transmissive radiation cooling film (TRC) is used to allow sunlight to pass through the radiation cooling film, realizing top daytime radiation cooling and bottom light-to-heat conversion under the same footprint, enhancing the compactness of the device. During daytime operation, sunlight passes through the TRC film to heat the adsorption material to release water vapor, and the released water vapor quickly condenses on the surface of the TRC film. During night operation, the adsorption material captures water vapor from the air, and at the same time, the water vapor with higher humidity in the surrounding air condenses on the TRC film, realizing direct water generation driven by radiation cooling at night.

[0106] This atmospheric water collection technology based on water vapor adsorption (S-AWH) has the advantages of being sunlight-driven and water production being less affected by time and space. The introduced transmission-type radiation cooling film significantly improves the water production capacity of the adsorption-type air water collection technology by assembling each component layer by layer.

[0107] Example 9

[0108] Reference Figure 1-8, which is the eighth embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: the detailed content of the heating process, when the water tank 302 and the phase change heat storage tank 301 form a loop:

[0109] Furthermore, the water in the water tank 302 flows through the phase change heat storage tank 301 to exchange heat therewith, and enters the microchannel heat exchanger 203 to be heated;

[0110] When the water temperature in the water tank 302 is lower than the air temperature, the fourth valve 302b is opened. At this time, the water in the spare water tank 304, with the assistance of the heating pipe 304a, the high-temperature water inside enters the water tank 302 for supplementary heating and water.

[0111] Example 10

[0112] Reference Figure 1-8 , which is the ninth embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: when the temperature reduction range does not reach the normal growth temperature of the plant:

[0113] Turn on the compressor 503 and the adjustable expansion valve 501, and place the three-position four-way reversing valve 503a in the first operating position to make the refrigerant in the refrigerant pipeline flow counterclockwise;

[0114] At this time, when the refrigerant flows through the evaporator 504, it absorbs the heat in the heat exchange reaction device 200 to assist in cooling, and absorbs low-grade thermal energy from the ambient air inside the plant factory.

[0115] When the temperature rise does not reach the normal growth temperature of plants:

[0116] Turn on the compressor 503 and the adjustable expansion valve 501, and place the three-position four-way reversing valve 503a in the third operating position, so that the refrigerant in the refrigerant pipeline flows clockwise;

[0117] At this time, the refrigerant flows through the evaporator 504 and releases heat into the heat exchange reaction device 200 to assist in temperature increase.

[0118] Embodiment 11

[0119] Reference Figure 1-7 , which is the tenth embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that when using Fluent software for transient calculation, the initial temperature is set to 30°C. By analyzing the cooling rate, we can evaluate the heat dissipation performance of the wall structure during the day, and observe the temperature distribution cloud map at 10,000 seconds and the changes in the temperature reference point during this period. The specific experimental content can be found in Figure 5 and Figure 6 The value changes can be clearly seen in the figure.

[0120] Comparing the temperature data at the end of 10,000 seconds, the temperature of the solid structure is 29.86°C, while the temperature of the foot-shaped structure is 28.84°C. Based on these comparison results, it can be seen that the foot-shaped structure performs better in heat dissipation performance, and the cooling rate of the whole process is greater, which can promote the indoor cooling of the plant factory during the day to a certain extent.

[0121] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0122] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0123] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0124] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plant factory in an arid climate zone, comprising a vegetation area (P) and a wall (A), characterized in that: include, The air passage (100) is composed of a chimney passage (101) and a vortex passage pipe (102) connected to each other; The end of the chimney passage pipe (101) is a cold air outlet (101a), the end of the vortex flow pipe (102) is a hot air outlet (102a), the cold air outlet (101a) is connected to a heat exchange reaction device (200), and the hot air outlet (102a) is connected to a first heat exchange pipe (103); The other end of the heat exchange reaction device (200) is connected to an air conditioning unit (500); The other end of the first heat exchange tube (103) is connected to an energy regulating device (300), and the energy regulating device (300) is connected to the transistor-like water energy collector (400) through a pipeline, and is connected to the heat exchange reaction device (200) through a first valve (201) and a second valve (202).

2. The arid climate zone plant factory according to claim 1, characterized in that: The heat exchange reaction device (200) is provided with a microchannel heat exchanger (203) and a fan (204); The inlet and outlet of the microchannel heat exchanger (203) are respectively connected to the first valve (201) and the second valve (202).

3. The arid climate zone plant factory according to claim 2, characterized in that: The energy regulating device (300) comprises a phase change heat storage box (301), a water tank (302) arranged below the phase change heat storage box (301), and a photovoltaic thermal panel group (303) laid flat on the top slope of the phase change heat storage box (301).

4. The arid climate zone plant factory according to claim 3, characterized in that: The water tank (302) is provided with a second heat exchange tube (302a) outside, the second heat exchange tube (302a) is placed in the phase change heat storage tank (301) and is provided with a third valve (302a-1) and a water pump (302a-2) at both ends respectively; The water tank (302) is further connected to a spare water tank (304) via a fourth valve (302b), and the spare water tank (304) is connected to a heating pipe (304a).

5. The arid climate zone plant factory according to claim 4, characterized in that: A radiation cooling water intake device (600) is movably connected to one side of the wall (A) via a rocker mechanism; The radiation cooling water intake device (600) is connected to the transistor-like water energy collector (400) via a pipeline. A water collection pool (401) is provided in the transistor-like water energy collector (400). The water collection pool (401) is connected to the water tank (302) via a pipeline.

6. The arid climate zone plant factory according to claim 5, characterized in that: The air conditioning unit (500) comprises an adjustable expansion valve (501), a condenser (502), a compressor (503), and an evaporator (504) which are interconnected via a refrigerant pipeline; The evaporator (504) is in communication with the heat exchange reaction device (200), and a three-position four-way reversing valve (503a) is provided at the compressor (503).

7. The arid climate zone plant factory according to claim 5, characterized in that: A control valve (104) and a start-stop valve (105) are provided at the connection between the chimney passage pipe (101) and the vortex passage pipe (102); The chimney passage (101) is provided with a curved surface aperture at its inlet, and a humidity regulating plate (101b) is further provided inside the passage.

8. Multi-directional temperature control method, characterized in that: The invention comprises a plant factory for an arid climate zone as claimed in claim 7, and Cooling during the day: the high-temperature gas in the vegetation area (P) passes through the chimney passage (101) to the junction port with the vortex flow pipe, the high-temperature gas enters the vortex flow pipe (102) through the control valve (104), and the low-temperature gas enters the heat exchange reaction device (200) through the cold air outlet (101a) for precooling; The first valve (201) and the second valve (202) are opened, the water tank (302) and the microchannel heat exchanger (203) form a loop, and the fan (204) is turned on to promote cooling. Heating at night: opening the third valve (302a-1) and the water pump (302a-2), so that the water tank (302) and the phase change heat storage tank (301) form a loop for heat exchange; The first valve (201) and the second valve (202) are opened, the water tank (302) and the microchannel heat exchanger (203) form a loop, and the fan (204) is turned on to promote temperature increase.

9. The multi-directional temperature control method according to claim 8, characterized in that: The radiation cooling water intake device (600) reflects infrared radiation with a wavelength of 8 μm-13 μm and sunlight with a wavelength of 0.3 μm-2.5 μm; The sunlight with a wavelength of 0.3 μm to 2.5 μm reflected by the radiation cooling water intake device (600) is projected onto the photovoltaic thermal panel group (303) for supplementary lighting; The infrared radiation with a wavelength of 8 μm to 13 μm reflected by the radiation cooling water intake device (600) is projected onto the photovoltaic thermal panel group (303) and reflected into the air for a second time to perform radiation cooling.

10. The multi-directional temperature control method according to claim 9, characterized in that: The photovoltaic thermal panel group (303) is placed obliquely on the wall (A), with the horizontal center line of the bottom surface as the boundary; The phase change heat storage box (301) is located on the upper side of the transverse center line of the bottom surface of the photovoltaic thermal panel group (303), and the heating tube (304a) is located on the lower side of the transverse center line of the bottom surface of the photovoltaic thermal panel group (303).

11. The multi-directional temperature control method according to claim 10, characterized in that: The high-temperature gas flows along the vortex flow tube (102) and the first heat exchange tube (103) and enters the phase-change heat storage box (301) to store heat energy for use in nighttime heating.

12. The multi-directional temperature control method according to claim 11, characterized in that: The radiation cooling water extraction device (600) condenses water vapor during the day and captures water vapor at night to produce water; The water generated by the radiation cooling water intake device (600) drips into the collection pool (401) in the transistor-like water energy collector (400) through a pipeline, and is converted into electrical energy through gravitational potential energy during the process.

13. The multi-directional temperature control method according to claim 12, characterized in that: When the water tank (302) and the phase-change heat storage tank (301) form a loop: The water in the water tank (302) flows through the phase change heat storage tank (301) to exchange heat therewith, and enters the microchannel heat exchanger (203) to be heated; When the water temperature in the water tank (302) is lower than the air temperature: The fourth valve (302b) is opened to use the water in the standby water tank (304) to replenish water and increase the temperature.

14. The multi-directional temperature control method according to claim 13, characterized in that: When the temperature drop does not reach the normal growth temperature of the plant: Turning on the compressor (503) and the adjustable expansion valve (501), placing the three-position four-way reversing valve (503a) in the first operating position, and allowing the refrigerant in the refrigerant pipeline to flow counterclockwise; At this time, when the refrigerant flows through the evaporator (504), it absorbs the heat in the heat exchange reaction device (200) to assist in cooling.

15. The multi-directional temperature control method according to claim 14, characterized in that: When the temperature rise does not reach the normal growth temperature of plants: Turning on the compressor (503) and the adjustable expansion valve (501), placing the three-position four-way reversing valve (503a) in the third operating position, so that the refrigerant in the refrigerant pipeline flows clockwise; At this time, the refrigerant flows through the evaporator (504) and releases heat into the heat exchange reaction device (200) to assist in heating.

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