Solar greenhouse temperature, light and humidity environment regulation and control method based on CFD analogue simulation

Abstract

The invention relates to the technical field of sunlight greenhouses, and discloses a CFD analogue simulation-based sunlight greenhouse temperature, light and humidity environment regulation and control method, which comprises the following steps of: designing the span, the front rake and the height of a sunlight greenhouse structure; simulating the environment in the sunlight greenhouse by adopting a CFD (Computational Fluid Dynamics) analogue simulation method; arranging a heat-insulating roller shutter machine, establishing solar greenhouse solar radiation models of the heat-insulating roller shutter machine at different positions, and actually building a solar greenhouse by using the optimal solar greenhouse solar radiation model; adjusting the structure of the sunlight greenhouse; the solar greenhouse is divided into two parts through the heat insulation roller shutter machine, when the heat insulation roller shutter machine is used for rolling, agricultural machinery can directly enter the solar greenhouse to work, the temperature of soil in the solar greenhouse is increased in the mode that solar energy and floor heating are combined, the environment regulation and control capacity is higher, crop growth is facilitated, and the crop yield is improved. The CFD simulation method is adopted to simulate the environment in the sunlight greenhouse, and the sunlight greenhouse is constructed after simulation, so that the quality of the constructed sunlight greenhouse is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of solar greenhouses, and more particularly to a method for controlling the temperature, light, and humidity environment of a solar greenhouse based on CFD simulation. Background Art

[0002] CFD is the abbreviation of computational fluid dynamics. It has developed along with the development of computer technology and numerical calculation technology. CFD is equivalent to conducting "virtual" experiments on computers to simulate actual fluid flow conditions. Its basic principle is to numerically solve the differential equations that control fluid flow, deriving the discrete distribution of the fluid flow field in a continuous area, thereby approximately simulating fluid flow conditions. CFD is a type of modern simulation technology. The structure of a solar greenhouse is mainly composed of walls, front and rear roofs, supporting frames, and covering materials. The core of its design is to achieve insulation and lighting through reasonable construction. The walls are usually made of soil, bricks, or composite materials. The rear roof is constructed with insulation materials, and the front roof is covered with transparent film or board. The frame types can be made of bamboo, wood, steel, and other materials. The current solar greenhouse structure is not compatible with general agricultural machinery. Agricultural machinery cannot enter the solar greenhouse. The greenhouse arches and support poles hinder mechanical operations. In addition, the semi-closed structure of the solar greenhouse has weak environmental control capabilities, making it difficult to create the best environment for crop growth at low cost. The special mechanical equipment in the solar greenhouse is not matched and complete, and the mechanical equipment used in the solar greenhouse has a low degree of intelligence. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the implementation regulations of the present invention provide a method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation to solve the technical problems raised in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation, comprising the following steps: Step S1: Design the span, forward inclination angle, and height of the greenhouse structure according to the width and height requirements of the facility's dedicated machinery; Step S2, simulating the environment in the solar greenhouse using a CFD simulation method; Step S3: During CFD simulation, a heat-insulating roller shutter is installed in the middle of the solar greenhouse, and a solar radiation model of the solar greenhouse is established with the heat-insulating roller shutter at different positions. Step S4: actually building a solar greenhouse using the optimal solar greenhouse solar radiation model, and collecting temperature in the solar greenhouse; Step S5: using a combination of solar energy and floor heating to increase the soil temperature in the solar greenhouse; Step S6: adjust the solar greenhouse solar radiation model based on the actual collected results, and adjust the solar greenhouse structure until the error between the solar greenhouse solar radiation model and the actual collected results is within ±1°C.

[0005] In a preferred embodiment, in step S1, the facility-specific machinery is agricultural machinery in a solar greenhouse, and in step S1, the width of the widest agricultural machinery and the height of the tallest agricultural machinery are collected, the effective height of the solar greenhouse exceeds the height of the tallest agricultural machinery plus 0.5m, and the span of the solar greenhouse exceeds the sum of the width of the widest agricultural machinery and the width of the planting areas on both sides and the width of the channel space.

[0006] In a preferred embodiment, in step S1, the calculation formula for the forward tilt angle α of the solar greenhouse structure is: , where is the geographical latitude of the solar greenhouse construction site, and the geographical latitude is based on the north latitude. is the solar declination angle on the winter solstice, JY is the empirical adjustment value, and its value range is 5°-10°. The solar greenhouse is built with the calculated forward tilt angle α.

[0007] In a preferred embodiment, in step S4, when building a solar greenhouse, an insulating roller shutter is built at the position simulated in step S3, and the insulation quilt in the insulating roller shutter is unfolded to divide the solar greenhouse structure into two parts, the upper part is the insulation quilt and the solar greenhouse film to form an insulation layer, and the lower part is the insulation quilt and the solar greenhouse enclosure structure to form a constant temperature layer. When the insulating roller shutter rolls up the insulation quilt, agricultural machinery enters the solar greenhouse to perform operations.

[0008] In a preferred embodiment, in step S5, floor heating is provided at the bottom of the solar greenhouse, and a vent movable membrane is provided at the top of the solar greenhouse. Humidity data SD in the solar greenhouse is collected, and the collected humidity data SD is compared with the humidity threshold SY in the solar greenhouse. When the humidity data SD ≥ the humidity threshold SY, the vent movable membrane is opened to perform ventilation. When the humidity data SD < the humidity threshold SY, the vent movable membrane is closed.

[0009] In a preferred embodiment, the solar radiation intensity data information GQ and the temperature data information WD in the solar greenhouse are collected and the judgment value P is calculated. The calculation formula of the judgment value P is: , where FS is the correlation coefficient between solar radiation intensity and heat, k1 and k2 are weights, and the calculated judgment value P is compared with the temperature threshold WY in the solar greenhouse. When the judgment value P ≥ the temperature threshold WY, the floor heating does not need to be started. When the judgment value P < the temperature threshold WY, the floor heating is started.

[0010] In a preferred embodiment, in step 3, when performing solar radiation model simulation, first, a first insulating roller shutter is set at the center of the solar greenhouse to establish a first solar radiation model, a second insulating roller shutter is set 0.4 m above the first insulating roller shutter to establish a second solar radiation model, and a third insulating roller shutter is set 0.4 m below the first insulating roller shutter to establish a third solar radiation model.

[0011] In a preferred embodiment, the first group of average thermal insulation effects of the first solar radiation model and the second solar radiation model and the average thermal insulation effects of the first solar radiation model and the third solar radiation model are compared, and the solar radiation model with better average thermal insulation effect is taken. An insulating roller shutter is set again in the middle and a solar conformity model is established until the distance between adjacent insulating roller shutters is 0.05m. At this time, an insulating roller shutter is set at the center of the two insulating roller shutters, and the position of the insulating roller shutter is used as the optimal solar greenhouse solar radiation model in step S4 to build a solar greenhouse.

[0012] In a preferred embodiment, in step S6, the temperature collected in the solar greenhouse is compared with the temperature simulated by the solar radiation model. When the temperature difference between the two is more than ±1°C, the parameters in the solar radiation model are adjusted until the temperature calculated by the solar radiation model is within ±1°C of the actual collected temperature. When the temperature calculated by the solar radiation model is within ±1°C of the actual collected temperature, the solar radiation model simulation in step S3 is performed again, and a solar greenhouse is built with the optimal solar radiation model of the solar greenhouse.

[0013] Technical effects and advantages of the present invention: The present invention uses an insulated roller shutter to divide the solar greenhouse into two parts. When the insulated roller shutter is rolled up, agricultural machinery can directly enter the solar greenhouse to work, which increases the overall intelligence level. In addition, the soil temperature in the solar greenhouse is increased by combining solar energy with floor heating, which has a stronger ability to regulate the environment and facilitates crop growth. The CFD simulation method is used to simulate the environment in the solar greenhouse, and then the greenhouse is constructed after the simulation, so that the constructed solar greenhouse is of higher quality. The present invention calculates the width of the widest agricultural machinery and the height of the tallest agricultural machinery, and can accurately select the effective height and span of the solar greenhouse. The inclination angle α is calculated using the geographical latitude and the solar declination angle, so that after the solar greenhouse of the present application is constructed, more solar energy can be obtained through the set inclination angle α. The present invention collects solar radiation intensity data information GQ and temperature data information WD in the solar greenhouse. The calculated judgment value P can accurately express the situation in the solar greenhouse. When the judgment value P is greater than or equal to the temperature threshold WY, the temperature in the solar greenhouse is sufficient and the floor heating does not need to be started, which achieves an energy-saving effect. When the judgment value P is less than the temperature threshold WY, the floor heating is started to ensure the temperature in the solar greenhouse. The present application can intelligently adjust the solar greenhouse to ensure the growth environment of crops. The present invention corrects the data in the CFD simulation method through the actual temperature collected, so that the solar radiation model subsequently established by the CFD simulation method is more accurate. By comparing the solar radiation model with better average thermal insulation effect, it is possible to understand where the thermal insulation roller shutter machine with better thermal insulation effect should be installed, and understand the most suitable installation location for the thermal insulation roller shutter machine, so that the thermal insulation effect of the solar greenhouse finally built is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic flow chart of the method for controlling the temperature, light and humidity environment of an overall solar greenhouse of the present invention. DETAILED DESCRIPTION

[0015] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Reference Figure 1 The present invention provides a method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation, comprising the following steps: Step S1: Design the span, forward inclination angle, and height of the greenhouse structure according to the width and height requirements of the facility's dedicated machinery; Step S2, simulating the environment in the solar greenhouse using a CFD simulation method; Step S3: During CFD simulation, a heat-insulating roller shutter is installed in the middle of the solar greenhouse, and a solar radiation model of the solar greenhouse is established with the heat-insulating roller shutter at different positions. Step S4: actually building a solar greenhouse using the optimal solar greenhouse solar radiation model, and collecting temperature in the solar greenhouse; Step S5: using a combination of solar energy and floor heating to increase the soil temperature in the solar greenhouse; Step S6: adjust the solar greenhouse solar radiation model based on the actual collected results, and adjust the solar greenhouse structure until the error between the solar greenhouse solar radiation model and the actual collected results is within ±1°C.

[0017] In the embodiment of the present application, when constructing a solar greenhouse and adjusting it after construction, the present application uses an insulated roller shutter to divide the solar greenhouse into two parts. When the insulated roller shutter is rolled up, there will be no obstruction in the solar greenhouse. Therefore, agricultural machinery can directly enter the solar greenhouse, and the greenhouse arch and support rods will not cause obstruction. Automated agricultural operations can be performed, and the overall intelligence level is higher. In addition, a combination of solar energy and floor heating is used to increase the temperature of the soil in the solar greenhouse, and the ability to regulate the environment is stronger. It can better simulate the growth environment of crops and facilitate crop growth. The CFD simulation method is used to simulate the environment in the solar greenhouse, and the construction is carried out after the simulation, so that the constructed solar greenhouse is of higher quality.

[0018] Reference Figure 1 In step S1, the facility-specific machinery is the agricultural machinery in the solar greenhouse, and in step S1, the width of the widest agricultural machinery and the height of the tallest agricultural machinery are collected. The effective height of the solar greenhouse exceeds the height of the tallest agricultural machinery plus 0.5m. The span of the solar greenhouse exceeds the sum of the width of the widest agricultural machinery and the width of the planting areas on both sides and the width of the channel space. In step S1, the calculation formula for the forward tilt angle α of the solar greenhouse structure is: , where is the geographical latitude of the solar greenhouse construction site, and the geographical latitude is based on the north latitude. is the solar declination angle on the winter solstice, JY is the empirical adjustment value, and its value range is 5°-10°. The solar greenhouse is built with the calculated forward tilt angle α.

[0019] In the embodiment of the present application, when building a solar greenhouse, in order to ensure that agricultural machinery can enter the interior of the solar greenhouse, the present application first calculates the width of the widest agricultural machinery and the height of the tallest agricultural machinery. Based on the collection of the above two data, the effective height and span of the solar greenhouse are selected to ensure that agricultural machinery can operate freely in the solar greenhouse. When calculating the inclination angle α, the geographical latitude and the solar declination angle are used for calculation, so that the solar greenhouse of the present application obtains more solar energy. When selecting the empirical adjustment value JY, in areas where it is cold and the light is weak in winter, a larger value can be taken, directly taking 10°, so as to maximize the sunlight. In relatively mild or cost-sensitive areas, 5° can be taken to avoid excessively high temperatures that make it impossible for plants in the greenhouse structure to grow. The present application has a higher degree of intelligence, and more agricultural machinery can be used to improve the overall planting efficiency.

[0020] Reference Figure 1 In step S4, when building a solar greenhouse, an insulating roller shutter machine is built at the position simulated in step S3. The thermal insulation quilt in the insulating roller shutter machine is unfolded to divide the solar greenhouse structure into two parts, the upper part is the thermal insulation quilt and the solar greenhouse film to form an insulation layer, and the lower part is the thermal insulation quilt and the solar greenhouse enclosure structure to form a constant temperature layer. When the insulating roller shutter machine rolls up the thermal insulation quilt, agricultural machinery enters the solar greenhouse to perform operations.

[0021] In an embodiment of the present application, an insulating roller shutter machine is provided when constructing a solar greenhouse. After the insulation blanket in the insulating roller shutter machine is unfolded, an insulating layer and a constant temperature layer are formed at this time, which reduces the volume of the crop part and avoids rapid heat dissipation, thereby ensuring that the temperature of the crop is relatively constant, which is convenient for crop growth. When the insulating roller shutter machine rolls up the insulation blanket, mechanical operations can be performed, and the present application can be intelligently adjusted to adapt to different working environments.

[0022] Reference Figure 1 In step S5, floor heating is provided at the bottom of the solar greenhouse, and a vent movable membrane is provided at the top of the solar greenhouse. Humidity data SD in the solar greenhouse is collected, and the collected humidity data SD is compared with the humidity threshold SY in the solar greenhouse. When the humidity data SD ≥ the humidity threshold SY, the vent movable membrane is opened to perform ventilation. When the humidity data SD < the humidity threshold SY, the vent movable membrane is closed. The solar radiation intensity data information GQ and the temperature data information WD in the solar greenhouse are collected and the judgment value P is calculated. The calculation formula of the judgment value P is: , where FS is the correlation coefficient between solar radiation intensity and heat, k1 and k2 are weights, and the calculated judgment value P is compared with the temperature threshold WY in the solar greenhouse. When the judgment value P ≥ the temperature threshold WY, the floor heating does not need to be started. When the judgment value P < the temperature threshold WY, the floor heating is started.

[0023] In an embodiment of the present application, after the solar greenhouse is built, it is necessary to adjust the environment inside it. When adjusting the humidity, the humidity inside the solar greenhouse is detected and the humidity data SD inside the solar greenhouse is collected. When the humidity data SD ≥ the humidity threshold SY, the humidity inside the solar greenhouse is high, so the movable membrane of the vent is opened for ventilation to adjust the internal humidity in time. When adjusting the temperature, the solar radiation intensity data information GQ and the temperature data information WD inside the solar greenhouse are first collected. The judgment value P calculated at this time can accurately express the situation inside the solar greenhouse. When the judgment value P ≥ the temperature threshold WY, the temperature inside the solar greenhouse is sufficient and the floor heating does not need to be started, which has an energy-saving effect. When the judgment value P < the temperature threshold WY, the floor heating is started to ensure the temperature inside the solar greenhouse. The present application can intelligently adjust the solar greenhouse to ensure the growth environment of crops.

[0024] Reference Figure 1 In step 3, when simulating the solar radiation model, first, a first insulation roller shutter is set at the center of the solar greenhouse to establish a first solar radiation model, a second insulation roller shutter is set 0.4m above the first insulation roller shutter, and a second solar radiation model is established. A third insulation roller shutter is set 0.4m below the first insulation roller shutter to establish a third solar radiation model. The first group of average thermal insulation effects of the first solar radiation model and the second solar radiation model and the average thermal insulation effects of the first solar radiation model and the third solar radiation model are compared, and the solar radiation model with better average thermal insulation effect is taken. An insulation roller shutter is set again in the middle of the model and a solar conformity model is established until the distance between adjacent insulation roller shutters is 0.05m. At this time, an insulation roller shutter is set at the center of the two insulation roller shutters, and the position of the insulation roller shutter is used as the optimal solar greenhouse solar radiation model in step S4 to build a solar greenhouse.

[0025] In an embodiment of the present application, when establishing a solar radiation model, a first thermal insulation roller shutter is directly set at the center of the solar greenhouse to establish a first solar radiation model. Subsequently, a second solar radiation model and a third solar radiation model are established above and below the solar greenhouse respectively. By comparing the solar radiation models with better average thermal insulation effects, it is possible to understand where the thermal insulation roller shutter with better thermal insulation effects should be installed. After multiple subsequent position determinations, the most suitable location for installing the thermal insulation roller shutter is understood, so that the thermal insulation effect of the solar greenhouse finally built is better.

[0026] Reference Figure 1 In step S6, the temperature collected in the solar greenhouse is compared with the temperature simulated by the solar radiation model. When the temperature difference between the two is more than ±1°C, the parameters in the solar radiation model are adjusted until the temperature calculated by the solar radiation model is within ±1°C and the actual collected temperature. When the temperature calculated by the solar radiation model is within ±1°C and the actual collected temperature is within ±1°C, the solar radiation model simulation in step S3 is performed again, and a solar greenhouse is built with the optimal solar radiation model.

[0027] In the embodiment of the present application, after the solar greenhouse is built, there will be a certain error between the simulated data and the actual data. Therefore, the present application performs actual temperature collection and corrects the data in the CFD simulation method based on the actual collected temperature, so that the solar radiation model subsequently established using the CFD simulation method is more accurate.

[0028] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The units and algorithm steps of each example described in the embodiment can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0029] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0030] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0031] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling the temperature, light, and humidity environment of a solar greenhouse based on CFD simulation, characterized by: The following steps are involved: Step S1: Design the span, forward inclination angle, and height of the greenhouse structure according to the width and height requirements of the facility's dedicated machinery; Step S2, simulating the environment in the solar greenhouse using a CFD simulation method; Step S3: During CFD simulation, a heat-insulating roller shutter is installed in the middle of the solar greenhouse, and a solar radiation model of the solar greenhouse is established with the heat-insulating roller shutter at different positions. Step S4: actually building a solar greenhouse using the optimal solar greenhouse solar radiation model, and collecting temperature in the solar greenhouse; Step S5: using a combination of solar energy and floor heating to increase the soil temperature in the solar greenhouse; Step S6: adjust the solar greenhouse solar radiation model based on the actual collected results, and adjust the solar greenhouse structure until the error between the solar greenhouse solar radiation model and the actual collected results is within ±1°C.

2. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: In step S1, the facility-specific machinery is agricultural machinery in the solar greenhouse, and in step S1, the width of the widest agricultural machinery and the height of the tallest agricultural machinery are collected, the effective height of the solar greenhouse exceeds the height of the tallest agricultural machinery plus 0.5m, and the span of the solar greenhouse exceeds the sum of the width of the widest agricultural machinery and the width of the planting areas on both sides and the width of the channel space.

3. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: In step S1, the calculation formula for the forward tilt angle α of the solar greenhouse structure is: , where is the geographical latitude of the solar greenhouse construction site, and the geographical latitude is based on the north latitude. is the solar declination angle on the winter solstice, JY is the empirical adjustment value, and its value range is 5°-10°. The solar greenhouse is built with the calculated forward tilt angle α.

4. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: In step S4, when the solar greenhouse is being built, an insulating roller shutter is built at the position simulated in step S3, and the insulation quilt in the insulating roller shutter is unfolded to divide the solar greenhouse structure into two parts, the upper part is the insulation quilt and the solar greenhouse film to form an insulation layer, and the lower part is the insulation quilt and the solar greenhouse enclosure structure to form a constant temperature layer. When the insulating roller shutter rolls up the insulation quilt, agricultural machinery enters the solar greenhouse to perform operations.

5. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: In step S5, floor heating is provided at the bottom of the solar greenhouse, and a movable membrane of a vent is provided at the top of the solar greenhouse. Humidity data SD in the solar greenhouse is collected, and the collected humidity data SD is compared with the humidity threshold SY in the solar greenhouse. When the humidity data SD ≥ the humidity threshold SY, the movable membrane of the vent is opened to perform ventilation. When the humidity data SD < the humidity threshold SY, the movable membrane of the vent is closed.

6. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: Collect solar radiation intensity data information GQ and temperature data information WD in the solar greenhouse and calculate the judgment value P. The calculation formula of the judgment value P is: , where FS is the correlation coefficient between solar radiation intensity and heat, k1 and k2 are weights, and the calculated judgment value P is compared with the temperature threshold WY in the solar greenhouse. When the judgment value P ≥ the temperature threshold WY, the floor heating does not need to be started. When the judgment value P < the temperature threshold WY, the floor heating is started.

7. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: In step 3, when simulating the solar radiation model, first set the first insulation roller shutter at the center of the solar greenhouse to establish a first solar radiation model, set the second insulation roller shutter 0.4m above the first insulation roller shutter to establish a second solar radiation model, set the third insulation roller shutter 0.4m below the first insulation roller shutter to establish a third solar radiation model.

8. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: Compare the first group of average thermal insulation effects of the first solar radiation model and the second solar radiation model, as well as the average thermal insulation effects of the first solar radiation model and the third solar radiation model, and take the solar radiation model with better average thermal insulation effect. Set the thermal insulation roller shutter again in the middle and establish a solar conformity model until the distance between adjacent thermal insulation roller shutters is 0.05m. At this time, set the thermal insulation roller shutter at the center of the two thermal insulation roller shutters, and use the position of the thermal insulation roller shutter as the optimal solar greenhouse solar radiation model in step S4 to build a solar greenhouse.

9. The method for controlling the temperature, light and humidity environment of a solar greenhouse based on CFD simulation according to claim 1, characterized in that: In step S6, the temperature collected in the solar greenhouse is compared with the temperature simulated by the solar radiation model. When the temperature difference between the two is more than ±1°C, the parameters in the solar radiation model are adjusted until the temperature calculated by the solar radiation model is within ±1°C of the actual collected temperature. When the temperature calculated by the solar radiation model is within ±1°C of the actual collected temperature, the solar radiation model simulation in step S3 is performed again, and a solar greenhouse is built with the optimal solar radiation model of the solar greenhouse.

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