Plant factory in arid climate zone and multi-directional temperature control method thereof

Abstract

The application discloses a plant factory in arid climate area and a multi-directional temperature control method, which comprises an air channel, wherein the air channel is composed of a chimney pipe and a vortex pipe; a heat exchange reaction device is connected with an air conditioner unit at the other end; a first heat exchange pipe is connected with an energy adjusting device at the other end; the energy adjusting device is communicated with a water energy collector through a pipeline and communicated with the heat exchange reaction device through a first valve and a second valve. Daytime temperature reduction: low-temperature gas is introduced into the heat exchange reaction device for precooling; the first valve and the second valve are opened, a water tank and a micro-channel heat exchanger form a loop, and a fan is opened to promote temperature reduction. Nighttime temperature increase: a third valve and a water pump are opened, the water tank and a phase change heat storage box 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 opened to promote temperature increase.

Description

Technical Field

[0001] The present 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 energy source, solar energy holds great potential as traditional fossil fuels become increasingly depleted. While commercially available solar products, such as LED solar lighting and solar water heaters, are technologically mature, the development of solar-related energy-saving projects still holds significant potential. Combining photovoltaic thermal technology with radiant cooling to achieve temperature control in agricultural equipment is also an area of ​​significant exploration. While various new solar greenhouses are commonplace, the combined application of photovoltaic thermal technology and radiant cooling in enclosed plant factories is relatively rare.

[0003] Research has shown that integrated photovoltaic and solar-thermal devices offer a compact structure and can significantly improve solar energy utilization. However, insufficient heat collection and untimely heat dissipation can compromise the efficiency of both the solar collector and the photovoltaic panels. Phase-change materials, however, are excellent energy storage and heat transfer materials. Using ambient temperature fluctuations to control their heat absorption and release to achieve indoor temperature control is one approach to achieving energy conservation in plant factories. Therefore, effectively utilizing the heat transfer and storage capabilities of phase-change materials to mitigate the heat dissipation issues associated with integrated photovoltaic and solar-thermal systems is a way to improve both heat collection and power generation performance.

[0004] Vertical air flow significantly affects the temperature and humidity of a space. Temperature and humidity conditions within a plant factory are crucial for the normal growth of crops. The ideal temperature range for crop growth is 10°C-35°C, and the humidity range is 40%-60%. Both excessively high and low temperatures and humidity pose threats to crop survival and growth. Currently, the common active or passive systems used for agricultural temperature and humidity control have limited functionality, discrete locations, and poor adjustability. This results in slightly poor vertical air flow within plant factory spaces, uneven temperature and humidity distribution, and significant local variations. Furthermore, the installation of heating and cooling equipment can encroach on plant cultivation space or require high standards for certain key materials, which can impact the plant factory's production efficiency to a certain extent. This is also an issue that should be considered in vertical crop cultivation.

[0005] Taking into account the climate characteristics of the continental climate zone, which is dry, rainy, low in humidity, and with large temperature differences between day and night, by utilizing its abundant light energy resources, combining photovoltaic and solar thermal utilization technologies (PVT), radiation cooling technology (RC), and hydroelectric transistor power generation technology (LA-TEG), and supplemented by phase change materials and water bodies 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 heating, cooling, and power supply cycles of plant factories. 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 invention.

[0007] In view of the problem mentioned above and / or existing in the prior art that combining photovoltaic thermal technology with radiant 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 pipe and a vortex flow pipe;

[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 plant factory in arid climate zones described in the present invention, wherein: a microchannel heat exchanger and a fan are placed in the heat exchange reaction device;

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

[0016] As a preferred solution of the arid climate zone plant factory described in the present invention, the energy regulation 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 plant factory in arid climate zones described in the present invention, wherein: one side of the wall is movably connected to a radiation cooling water intake device via a rocker mechanism;

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

[0021] As a preferred solution of the plant factory in arid climate zones of the present invention, the air conditioning unit includes an adjustable expansion valve, a condenser, a compressor, and an evaporator which are interconnected via 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 plant factory in arid climate zones 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 pipe entrance 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 is formed that combines photovoltaic and thermal integration, phase change heat storage with solar water heating technology, and radiation cooling to produce water and electricity.

[0026] Given the abundant light energy resources, by combining photovoltaic, solar thermal utilization technology, radiation refrigeration technology, and hydropower transistor power generation technology, supplemented by phase change materials and water bodies 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, ensuring the efficient and energy-saving operation of the heating, cooling, and power supply cycles of plant factories.

[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 further provides the following technical solutions: a multi-directional temperature control method, including the plant factory in an arid climate zone, and daytime cooling: 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 a control valve, and the low-temperature gas enters the heat exchange reaction device through a cold air outlet for pre-cooling;

[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 increase.

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

[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 to 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 pipe 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 use in nighttime heating.

[0038] As a preferred embodiment of the multi-directional temperature control method of the present invention, 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 then 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] Turning on the compressor and the adjustable expansion valve, placing the three-position four-way reversing valve in the first operating position, and causing the refrigerant in the refrigerant pipeline to flow counterclockwise;

[0046] At this time, the refrigerant absorbs 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 does not reach the normal growth temperature of the plant:

[0048] Turning on the compressor and the adjustable expansion valve, placing the three-position four-way reversing valve in the third operating position, and allowing 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: improving daytime heat storage and nighttime heat release, meeting the demand for nighttime heating in continental climate zones with significant day-night temperature differences; the combined application of multiple heat transfer methods can improve photovoltaic power generation efficiency, 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. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. 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 schematic diagram of the detailed structure of the 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 A schematic diagram of an air compressor in a plant factory in an arid climate zone and 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 relative 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 embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0061] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. 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] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0063] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout 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 for arid climate zones, comprising a vegetation area P and a wall A. The vegetation area P is the area where the plants are grown, while the wall A is an external frame for temperature control. The frame is equipped with most of the temperature control devices. The air passage 100 is the channel at the bottom through which gas floating upward from the vegetation area P is sucked in. The chimney duct 101 and the vortex flow duct 102 are connected, with the chimney duct 101 at the bottom and the vortex flow duct 102 at the top. The two are combined to form a "foot" shape, and their structure can be clearly seen in the accompanying drawings.

[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 areas and low-pressure areas in the pipeline. The pressure difference gives the gas an upward discharge speed. When the low-pressure area is close to the ground, the temperature rises and a greater exhaust speed is obtained 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 compressed gas entering through the side air inlet is accelerated through the chimney pipe 101, forming high and low temperature vortices in the inner and outer circles. At the tapered end of the subsequent control valve 104, under the adjustment of the tapered head, the high-temperature vortex in the outer circle enters the vortex flow tube 102 and goes to the hot air outlet 102a. The low-temperature vortex in the inner circle accumulates and is then squeezed into the cold air outlet 101a from the other end of the pipe.

[0069] Specifically, 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 heat exchange reaction device 200 primarily functions to directly cool down the air, creating heat exchange and affecting the plants below, or to heat up the air, discharging the high-temperature gas through the chimney pipe 101. The first heat exchange pipe 103 is simply a gas passage, connected for use.

[0070] Furthermore, the other end of the heat exchange reaction device 200 is connected to an air conditioning unit 500. The function of the air conditioning unit 500 is mainly to perform adaptive adjustment when the conventional process is not enough 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 regulator 300. This energy regulator 300 is connected to a transistor-like water energy collector 400 via a pipeline and to the heat exchange reaction device 200 via a first valve 201 and a second valve 202. The energy regulator 300 is used to store and release heat, while the transistor-like water energy collector 400 primarily provides secondary utilization for the liquid products generated by temperature fluctuations. The main regulating components are now connected in series, and the entire system operates according to a certain logic, forming a complete workflow.

[0072] Example 2

[0073] Reference Figure 1-4 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment and differs from the previous embodiment in that a microchannel heat exchanger 203 and a fan 204 are installed in the heat exchange reaction device 200. The microchannel heat exchanger 203 is a commonly used tubular temperature control component that is tightly arranged through extremely small pipes to enhance heat exchange efficiency. The fan 204 is used to more efficiently apply gas to 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. Therefore, 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 conditioning device 300 includes a phase-change thermal storage tank 301, a water tank 302 positioned below the phase-change thermal storage tank 301, and a photovoltaic thermal panel assembly 303 laid flat on the top slope of the phase-change thermal storage tank 301. The phase-change thermal storage tank 301 is a heat storage element capable of absorbing and storing process waste heat, waste heat, and solar energy, releasing it when needed. It has the ability to change its physical state within a certain temperature range. For example, when heated to the melting temperature, a phase transition from solid to liquid occurs. During the melting process, the phase-change thermal storage element absorbs and stores a large amount of latent heat. When the phase-change thermal storage element cools, the stored heat must be dissipated into the environment within a certain temperature range, undergoing a reverse phase transition from liquid to solid. This technical solution utilizes, but is not limited to, phase-change thermal storage via solid-liquid phase transition.

[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, a second heat exchange tube 302a is externally mounted on the water tank 302. The second heat exchange tube 302a is placed within 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. The water in the heat exchange tube is gradually temperature-adjusted, thereby achieving 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. This embodiment is based on the previous embodiment and differs 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. It is a composite device formed by stacking multiple layers of partition materials, and is composed of a sunlight-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 covered with a PE protective film, and a water-absorbing material and a finned heat sink are provided at the bottom. The entire device is also provided with a heat-insulating shell. With the assistance of the rocker mechanism, the inclination angle can be adjusted to increase the adjustment flexibility, which is used to cope with the daily changes in the solar azimuth and solar altitude angle and adjust the sunlight supplement for 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 into 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 water. 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, forming a cycle of secondary utilization.

[0082] Example 4

[0083] Reference Figure 1-4 , which is the fourth embodiment of the present invention, is based on the previous embodiment and differs from the previous embodiment in that: an air conditioning unit 500 includes an adjustable expansion valve 501, which is interconnected via a refrigerant pipeline and functions to cool and reduce the temperature and pressure of the refrigerant; a condenser 502, which cools and condenses high-temperature and high-pressure gas or vapor into liquid to release heat; a compressor 503, which pressurizes the refrigerant; and an evaporator 504, which functions opposite to the condenser 502, absorbing heat and releasing cold by vaporizing the liquid.

[0084] Furthermore, the evaporator 504 is connected to the heat exchange reaction device 200. When required, the evaporator 504 interchanges 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 separate the hot and cold air, while the start-stop valve 105 controls whether the upper and lower pipes are connected. When releasing heat, the hot air 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 inlet of the chimney pipe 101, and a humidity regulating plate 101b is provided inside the pipe. The curved aperture enhances the flow efficiency of the gas, and the humidity of the gas is controlled by the regulating plate to prevent affecting the conveying speed.

[0087] Example 5

[0088] Reference Figure 1-4 , which is the fifth embodiment of the present invention, provides a multi-directional temperature control method. This embodiment is based on the previous embodiment, and differs 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 ground-level air inside the plant factory passes through the chimney duct 101. Guided by the curved inlet, the high-temperature gas from the vegetation area P passes through the chimney duct 101 and reaches the cold air outlet 101a. The high-temperature gas then passes through the control valve 104 and enters the vortex flow tube 102, where it is pre-cooled in the low-temperature gas heat exchange reaction device 200. As the cold air enters the heat exchange reaction device 200, the hot gas passes through the vortex flow tube 102 and enters the energy conditioning 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 promote air circulation.

[0091] Heating at night: Open the third valve 302a-1 and the water pump 302a-2, open the second heat exchange tube 302a, and allow the water in the water tank 302 to circulate. 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] Furthermore, the first valve 201 and the second valve 202 are opened. As in the cooling control method, the water tank 302 and the microchannel heat exchanger 203 form a loop, allowing hot water to enter 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, this embodiment provides a multi-directional temperature control method. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that the pipe arrangement inside the wall can be Figure 5As can be seen from the figure, an air compressor is provided at the junction of the chimney pipe 101 and the vortex flow pipe 102, where the flow is diverted, to further enhance the efficiency of air circulation and the control efficiency of the diversion.

[0095] Example 7

[0096] Reference Figure 1-6 and Figure 8 , which is the sixth embodiment of the present invention, 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] Specifically, thermal radiation is typically transmitted from a high-temperature heat source to a low-temperature heat source. Objects on the Earth's surface (i.e., objects being cooled) can utilize outer space (~3K) as a sustainable cold source to continuously obtain cooling. However, only a small portion of surface infrared radiation (8-13μm) can pass through the atmosphere, while infrared radiation outside the 8-13μm wavelength range is absorbed by the atmosphere and produces a net infrared radiation heat exchange with the atmosphere. Therefore, infrared radiation in the 8-13μm band can provide a positive cooling effect for emitters with temperatures above ambient temperature. This significantly improves the cooling effect of traditional radiative cooling materials. This characteristic can assist in reflecting sunlight with a wavelength of 0.3μm-2.5μm onto the photovoltaic thermal panel group 303, while lowering its own surface temperature, preventing the photovoltaic panel group 303 from overheating, and also contributing to the formation of water vapor.

[0098] Furthermore, the 0.3μm-2.5μm wavelength sunlight 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 of the device not being able to 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 operating 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, is based on the previous embodiment and differs 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 produce 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 pipe, and is converted into electrical energy through gravitational potential energy during the process.

[0105] Based on the reflective plate, a transmissive radiative cooling (TRC) membrane is used to allow sunlight to pass through the membrane, achieving daytime radiative cooling at the top and light-to-heat conversion at the bottom within the same footprint, enhancing the compactness of the device. During daytime operation, sunlight passes through the TRC membrane and heats the adsorption material, releasing water vapor, which quickly condenses on the TRC membrane surface. During nighttime operation, the adsorption material captures water vapor from the air, while the higher humidity water vapor in the surrounding air condenses on the TRC membrane, achieving direct water production driven by nighttime radiative cooling.

[0106] This atmospheric water collection technology (S-AWH) based on water vapor adsorption 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 extraction 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. This embodiment is based on the previous embodiment, and differs 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 high-temperature water in the spare water tank 304 enters the water tank 302 with the assistance of the heating pipe 304a to replenish temperature 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 differs 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 allow the refrigerant in the refrigerant pipe to 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 heat 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 to allow the refrigerant in the refrigerant pipeline to flow 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] Example 11

[0119] Reference Figure 1-7 , is the tenth embodiment of the present invention. This embodiment is based on the previous embodiment and differs from the previous embodiment in that the initial temperature is set to 30°C when using Fluent software for transient calculation. 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 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 .

[0120] Comparing the temperature data at the end of 10,000 seconds, the solid structure's temperature was 29.86°C, while the zigzag structure's temperature was 28.84°C. These comparisons indicate that the zigzag structure performs better in terms of heat dissipation, achieving a faster cooling rate throughout the process, and thus, to a certain extent, promoting daytime cooling within the plant factory.

[0121] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. 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, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall 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 embodiment, 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, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0124] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. 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 (102) connected to each other; The end of the chimney 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); A microchannel heat exchanger (203) and a fan (204) are installed in the heat exchange reaction device (200); The inlet and outlet of the microchannel heat exchanger (203) are respectively connected to the first valve (201) and the second valve (202); The energy regulating device (300) comprises a phase change heat storage tank (301), a water tank (302) arranged below 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 water tank (302) is provided with a second heat exchange tube (302a) outside the water tank (302); 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); One side of the wall (A) is movably connected to a radiation cooling water intake device (600) via a rocker mechanism; The radiation cooling water intake device (600) is connected to the transistor-like water energy collector (400) via a pipeline. The transistor-like water energy collector (400) is provided with a collection pool (401). The collection pool (401) is connected to the water tank (302) via a pipeline. The radiation cooling water intake device (600) reflects infrared radiation with a wavelength of 8 μm to 13 μm and sunlight with a wavelength of 0.3 μm to 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, thereby performing radiation cooling.

2. The arid climate zone plant factory according to claim 1, 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).

3. The arid climate zone plant factory according to claim 2, characterized in that: A control valve (104) and a start-stop valve (105) are provided at the connection between the chimney passage (101) and the vortex flow passage (102); The chimney pipe (101) is provided with a curved surface aperture at its inlet, and a humidity regulating plate (101b) is further provided inside the pipe.

4. Multi-directional temperature control method, characterized by: The invention comprises the plant factory for arid climate zones as claimed in claim 3, and Daytime cooling: high-temperature gas from the vegetation area (P) passes through the chimney pipe (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 pre-cooling; 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.

5. The multi-directional temperature control method according to claim 4, 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).

6. The multi-directional temperature control method according to claim 5, 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.

7. The multi-directional temperature control method according to claim 6, 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 pipe, and is converted into electrical energy through gravitational potential energy during the process.

8. The multi-directional temperature control method according to claim 7, 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 then 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.

9. The multi-directional temperature control method according to claim 8, 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 causing 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.

10. The multi-directional temperature control method according to claim 9, 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, and causing the refrigerant in the refrigerant pipeline to flow clockwise; 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.

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