Environment self-adaptive intelligent greenhouse based on natural heat energy allocation

Abstract

The invention relates to the field of agricultural planting, in particular to a greenhouse cultivation technology. An environment self-adaption intelligent greenhouse based on natural heat energy allocation comprises an intelligent greenhouse body which comprises a greenhouse body and a comprehensive environment control system used for adjusting the temperature, humidity, illumination, fertilizer water and carbon dioxide in the greenhouse body. The comprehensive environment control system comprises a wet curtain fan, a high-pressure spraying device, a roof spraying device and a rhizosphere irrigation water device, and further comprises a water source heat pump system; the water source heat pump system is provided with an underground aquifer, and further comprises a water pump for pumping underground water from the underground aquifer and a backfill well communicated with the underground aquifer, and further comprises an air heat exchanger arranged in the greenhouse; the outlet of the air heat exchanger is communicated with the backfill well; the comprehensive environment control system is in signal connection with starting switches of the water pumps. The system has the advantages that the temperature in the greenhouse is adjusted through constant-temperature underground water, and the energy consumption cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of agricultural planting, and specifically to greenhouse cultivation technology. Background Art

[0002] The economic feasibility of modern facility agriculture production under different climate and market conditions in China is a matter of great concern to the industry. Most greenhouse projects have problems such as large investment, long payback period and high operating costs, making it quite challenging to achieve profitability.

[0003] Reducing energy consumption and energy costs is a necessary condition for the development of modern facility agriculture industry. Modern facility agriculture production brings about a large amount of energy consumption, greenhouse gas emissions and agricultural waste. The current production and environmental management methods are not environmentally friendly.

[0004] Since natural gas is mainly used as energy, taking a large-scale modern vegetable greenhouse project in Chongming, Shanghai as an example, there are prominent problems such as high energy consumption, high operating costs, especially high energy costs, and failure to comprehensively consider low-carbon operation plans. In order to ensure the high-quality and safe production of vegetables throughout the year, the project is equipped with high-energy-consuming equipment such as heating, cooling, and lighting. Although energy-saving technologies and equipment such as thermal insulation movable curtains, wet curtain evaporative refrigeration systems, and DC brushless fans have been added, the energy costs and carbon emissions caused by the use of natural gas heating, air source heat pump refrigeration, and high-pressure sodium lamp lighting are huge. Its total electricity consumption in 2022 will reach 13.119 million kWh (including cold storage and office electricity), and the natural gas consumption will reach 2.4033 million cubic meters, which will not only affect production efficiency, but also be detrimental to the sustainable development of the facility agriculture industry.

[0005] According to preliminary statistics, the energy cost of modern greenhouse vegetable production in Shanghai, Shandong and Beijing, which mainly uses natural gas as the heating mode, generally reaches 100-150 yuan / m2, and energy costs account for 30%-40% of the total greenhouse production cost. In recent years, energy prices have soared, and energy costs have become increasingly high, which is more likely to bring a devastating blow to the modern facility agriculture industry.

[0006] Therefore, reducing energy consumption costs will bring huge benefits to the modern facility agriculture production industry.

[0007] A water source heat pump technology, including a compressor, an evaporator, a condenser, a throttle valve, a refrigeration pipeline system, a water source system, a control system, etc. In winter, the system absorbs heat from groundwater, raises the temperature and supplies it to the room for heating; in summer, the indoor heat is released into the groundwater to maintain the balance of underground temperature. Summary of the invention

[0008] The object of the present invention is to provide an environmentally adaptive intelligent greenhouse based on natural thermal energy allocation to solve at least one of the above-mentioned technical problems.

[0009] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0010] An environment-adaptive intelligent greenhouse based on the allocation of natural heat energy includes an intelligent greenhouse, which includes a greenhouse and a comprehensive environmental control system for adjusting the temperature, humidity, light, fertilizer, water and carbon dioxide in the greenhouse, the comprehensive environmental control system includes a wet curtain fan, a high-pressure spray device, a roof sprinkler device, and a root irrigation water device, and also includes an underground water source temperature control system;

[0011] The underground water source temperature control system includes a water pump system for extracting underground water from the underground aquifer, a backfill well connected to the underground aquifer, and an air heat exchanger, which is arranged in the greenhouse;

[0012] The water outlet of the water pump system is connected to the inlet of the air heat exchanger, and the outlet of the air heat exchanger is connected to the backfill well;

[0013] The integrated environmental control system signal controls the start switch of the water pump system.

[0014] In the above design, the groundwater in the underground aquifer is warm in winter and cool in summer. Therefore, in summer and winter, groundwater is extracted from the underground aquifer through the groundwater source temperature control system and sent to the air heat exchanger located in the greenhouse to exchange heat with the air in the greenhouse. The temperature in the greenhouse can be lowered in summer and increased in winter. The beneficial effect is that the temperature in the greenhouse can be adjusted by the constant temperature of groundwater at a low cost.

[0015] Furthermore, it also includes an air supply system, which includes an air duct arranged along the upper edge of the greenhouse, the air duct is arranged with air outlets facing the greenhouse, a fan is arranged at one end of the air duct, the air outlet of the fan faces into the air duct, and an air heat exchanger is installed in front of the air outlet of the fan.

[0016] In the above design, the air duct can push the air conditioned by the air heat exchanger further into the greenhouse, which has the beneficial effect of improving the efficiency of regulating the greenhouse temperature.

[0017] Furthermore, the air heat exchanger adopts one of a plate-fin heat exchanger and a tube heat exchanger.

[0018] In the above design, the plate-fin heat exchanger and the tube heat exchanger have a larger contact area with the air, so the heat exchange effect is higher. Constant temperature groundwater passes through the pipes of the heat exchanger, and the air surrounds the outer periphery of the pipes to achieve heat exchange. The beneficial effect of using one of the plate-fin heat exchanger and the tube heat exchanger for the air heat exchanger is that the plate-fin heat exchanger and the tube heat exchanger have a simple structure and can reduce the manufacturing cost.

[0019] Furthermore, it includes using a water source heat pump system for exchanging heat with groundwater as a groundwater source temperature control system;

[0020] The water source heat pump system comprises a coolant outlet and a coolant inlet, the coolant outlet is connected to the inlet of the air heat exchanger, and the outlet of the air heat exchanger is connected to the coolant inlet;

[0021] The cooling medium is one of air and water.

[0022] In the above design, the water source heat pump is an existing technology, which is generally composed of a compressor, an evaporator, a condenser, a throttle valve, a refrigeration pipeline system, a water source system, a control system, etc. The water source heat pump system transfers the heat in the greenhouse to the groundwater source in summer, extracts energy from the groundwater source in winter, and uses the heat pump principle to raise the temperature through air or water as a coolant and then sends it to the greenhouse. Its beneficial effect is that it can reduce energy consumption and obtain more heat and cold.

[0023] Furthermore, it also includes a solar thermal storage system, which includes a water storage and heat preservation tank and a collector for absorbing solar energy;

[0024] The water outlet of the water pump is connected to the water storage and thermal insulation water tank, and the water outlet of the water storage and thermal insulation water tank is connected to the backfill well;

[0025] The integrated environmental control system controls the water pump to transport groundwater to the water storage and insulation tank. After the water storage and insulation tank is heated up, the integrated environmental control system opens the water outlet of the water storage and insulation tank and sends the hot water back to the underground aquifer through the backfill well.

[0026] In the above design, solar energy, as a clean energy source in nature, has a lower cost of use. Through the solar heat storage system, the collector that absorbs solar energy is used to heat the groundwater, and then the heated groundwater is sent back to the underground aquifer for heat storage. The beneficial effect is that the solar energy stored during the day can be used to adjust the greenhouse temperature at night, and it can also be used in summer and winter, further reducing energy consumption costs.

[0027] Furthermore, it also includes a peak-shifting heat storage system;

[0028] The off-peak heat storage system operates during off-peak hours and includes a heating chamber in which an electric heating tube is arranged;

[0029] The water pump draws groundwater from the underground aquifer into the heating chamber, and the water outlet of the heating chamber is connected to the backfill well.

[0030] The imbalance of grid load in time is a major problem facing the current power system. In order to encourage users to stagger their electricity consumption, the grid system has introduced a time-of-use electricity price plan to reduce electricity prices during low electricity consumption periods. In the above design, a heating chamber is provided, and an electric heating tube is provided in the heating chamber. The low electricity price of the grid is used to heat the groundwater, and the heated groundwater is then sent back to the underground aquifer to achieve heat storage. The beneficial effect is that the electricity cost of heat storage can be reduced by heating the groundwater during the off-peak low electricity price period.

[0031] Furthermore, the smart greenhouse also includes a comprehensive cooling and humidification system;

[0032] The comprehensive cooling and humidifying system includes a water supply system, the water source of which comes from the underground aquifer, and the water of the water supply system is supplied to the wet curtain fan, the high-pressure spray device, the roof sprinkler device, and the root irrigation water device.

[0033] In the above design, groundwater is used to supply water to the wet curtain fan, high-pressure spray device, roof sprinkler device, and root irrigation water device. The beneficial effect is that it can regulate the greenhouse temperature in a multi-pronged manner, improve the temperature control efficiency, and increase the humidity of the greenhouse.

[0034] Furthermore, it also includes a wind power heat storage system;

[0035] The wind power heat storage system includes a wind turbine generator and a water storage and heat preservation box. A heating device is arranged in the water storage and heat preservation box. The power supply of the heating device is connected to the wind turbine generator.

[0036] The water outlet of the water pump is connected to the water storage and insulation box, and the water outlet of the water storage and insulation box is connected to the backfill well;

[0037] The integrated environmental control system controls the water inlet and outlet of the water storage and insulation tank.

[0038] As a clean energy source in nature, wind power has a lower cost of use. In the above design, wind power is used to heat groundwater, and the heated groundwater is sent to the underground aquifer for heat storage. The beneficial effect is to further reduce energy consumption costs.

[0039] The present invention utilizes the constant temperature groundwater resources in nature and the air in the greenhouse for heat exchange, thereby realizing the temperature regulation in the greenhouse. The beneficial effect is that the temperature in the greenhouse can be regulated at a low cost, thereby reducing energy consumption.

[0040] The present invention also utilizes solar energy resources and wind power resources to heat groundwater, and backfills the heated groundwater into underground aquifers to achieve low-cost heat storage. The groundwater can then be extracted and used when it is needed to regulate the greenhouse temperature. The beneficial effect is that natural thermal energy can be fully utilized for temperature regulation in the greenhouse to save energy costs and achieve the goal of energy saving and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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:

[0042] Figure 1 It is a schematic diagram of the present invention.

[0043] Explanation of symbols:

[0044] 1. Greenhouse; 2. Water pump; 3. Air heat exchanger; 4. Backfill well; 5. Underground aquifer. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] 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.

[0047] 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.

[0048] 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 is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0049] Reference Figure 1 As shown, the environment-adaptive intelligent greenhouse based on the allocation of natural heat energy includes an intelligent greenhouse, the intelligent greenhouse includes a greenhouse 1, and a comprehensive environmental control system for adjusting the temperature, humidity, light, fertilizer, water and carbon dioxide in the greenhouse 1, the comprehensive environmental control system includes a wet curtain fan, a high-pressure spray device, a roof sprinkler device, and a root irrigation water device, and also includes an underground water source temperature control system;

[0050] The underground water source temperature control system includes a water pump 2 system for extracting underground water from an underground aquifer 5, a backfill well 4 connected to the underground aquifer 5, and an air heat exchanger 3, which is arranged in the greenhouse 1;

[0051] The water outlet of the water pump 2 system is connected to the inlet of the air heat exchanger 3, and the outlet of the air heat exchanger 3 is connected to the backfill well 4;

[0052] The integrated environmental control system signal controls the start switch of the water pump 2 system.

[0053] In this embodiment, the groundwater in the underground aquifer 5 is warm in winter and cool in summer. Therefore, in summer and winter, groundwater is extracted from the underground aquifer 5 through the underground water source temperature control system and sent to the air heat exchanger 3 located in the greenhouse 1 to exchange heat with the air in the greenhouse 1. The temperature in the greenhouse 1 can be lowered in summer and increased in winter. The beneficial effect is that the temperature in the greenhouse 1 can be adjusted by the constant temperature of the groundwater at a low cost.

[0054] Furthermore, it also includes an air supply system, which includes an air duct arranged along the upper edge of the greenhouse 1, the air duct is arranged with air outlets facing the greenhouse 1, a fan is arranged at one end of the air duct, the air outlet of the fan faces the inside of the air duct, and an air heat exchanger 3 is installed in front of the air outlet of the fan.

[0055] In this embodiment, the air duct can push the air conditioned by the air heat exchanger 3 further into the greenhouse 1 , which has the beneficial effect of improving the efficiency of regulating the temperature of the greenhouse 1 .

[0056] Furthermore, the air heat exchanger 3 adopts one of a plate-fin heat exchanger and a tube heat exchanger.

[0057] In this embodiment, the plate-fin heat exchanger and the tubular heat exchanger have a larger contact area with the air, so the heat exchange effect is higher. Constant temperature groundwater passes through the pipes of the heat exchanger, and the air surrounds the outer periphery of the pipes to achieve heat exchange. The air heat exchanger 3 uses one of the plate-fin heat exchanger and the tubular heat exchanger. The beneficial effect is that the plate-fin heat exchanger and the tubular heat exchanger have a simple structure and can reduce the manufacturing cost.

[0058] Furthermore, it includes using a water source heat pump system for exchanging heat with groundwater as a groundwater source temperature control system;

[0059] The water source heat pump system includes a brine outlet and a brine inlet, the brine outlet is connected to the inlet of the air heat exchanger 3, and the outlet of the air heat exchanger 3 is connected to the brine inlet;

[0060] The cooling medium is one of air and water.

[0061] In this embodiment, the water source heat pump is a prior art, generally composed of a compressor, an evaporator, a condenser, a throttle valve, a refrigeration pipeline system, a water source system, a control system, etc. The water source heat pump system transfers the heat in the greenhouse 1 to the groundwater source in summer, extracts energy from the groundwater source in winter, and uses the heat pump principle to raise the temperature through air or water as a coolant and then sends it to the greenhouse 1. Its beneficial effect is that it can reduce energy consumption and obtain more heat and cold.

[0062] Furthermore, it also includes a solar thermal storage system, which includes a water storage and heat preservation tank and a collector for absorbing solar energy;

[0063] The water outlet of the water pump 2 is connected to the water storage and insulation water tank, and the water outlet of the water storage and insulation water tank is connected to the backfill well 4;

[0064] The integrated environmental control system controls the water pump 2 to transport groundwater to the water storage and insulation tank. After the water storage and insulation tank is heated up, the integrated environmental control system opens the water outlet of the water storage and insulation tank and sends the hot water back to the underground aquifer 5 through the backfill well 4.

[0065] In this embodiment, solar energy, as a clean energy source in nature, has a lower cost of use. Through the solar heat storage system, the groundwater is heated by a collector that absorbs solar energy, and the heated groundwater is then sent back to the underground aquifer 5 for heat storage. The beneficial effect is that the solar heat stored during the day can be used to adjust the temperature of the greenhouse 1 at night, and it can also be used in summer and winter, further reducing energy consumption costs.

[0066] Furthermore, it also includes a peak-shifting heat storage system;

[0067] The off-peak heat storage system operates during off-peak hours and includes a heating chamber in which an electric heating tube is arranged;

[0068] The water pump 2 draws groundwater from the underground aquifer 5 into the heating chamber, and the water outflow from the heating chamber is connected to the backfill well 4.

[0069] The imbalance of grid load in time is a major problem facing the current power system. In order to encourage users to stagger their electricity consumption time, the grid system has introduced a time-of-use electricity price plan to reduce electricity prices during low electricity consumption periods. In this embodiment, a heating chamber is provided, and an electric heating tube is provided in the heating chamber. The low electricity price of the grid is used to heat the groundwater, and the heated groundwater is then sent back to the underground aquifer 5, thereby achieving heat storage. Its beneficial effect is that the electricity cost of heat storage can be reduced by heating the groundwater during the off-peak low electricity price period.

[0070] Furthermore, the smart greenhouse also includes a comprehensive cooling and humidification system;

[0071] The comprehensive cooling and humidifying system includes a water supply system, the water source of which comes from the underground aquifer 5, and the water of the water supply system is supplied to the wet curtain fan, the high-pressure spray device, the roof sprinkler device, and the root irrigation water device.

[0072] In this embodiment, groundwater is used to supply water to the wet curtain fan, high-pressure spray device, roof sprinkler device, and root irrigation water device. The beneficial effect is that the temperature of the greenhouse 1 is regulated in a multi-pronged manner, the temperature regulation efficiency is improved, and the humidity of the greenhouse 1 can be increased.

[0073] Furthermore, it also includes a wind power heat storage system;

[0074] The wind power heat storage system includes a wind turbine generator and a water storage and heat preservation box. A heating device is arranged in the water storage and heat preservation box. The power supply of the heating device is connected to the wind turbine generator.

[0075] The water outlet of the water pump 2 is connected to the water storage and insulation box, and the water outlet of the water storage and insulation box is connected to the backfill well 4;

[0076] The integrated environmental control system controls the water inlet and outlet of the water storage and insulation tank.

[0077] As a clean energy source in nature, wind power has a lower cost of use. In this embodiment, wind power is used to heat groundwater, and the heated groundwater is sent to the underground aquifer 5 for heat storage. The beneficial effect is that the energy consumption cost is further reduced.

[0078] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0079] It should be understood 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 for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0080] 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. An environment-adaptive intelligent greenhouse based on natural heat energy allocation, comprising an intelligent greenhouse, the intelligent greenhouse comprising a greenhouse, and a comprehensive environmental control system for adjusting temperature, humidity, light, fertilizer, water and carbon dioxide in the greenhouse, the comprehensive environmental control system comprising a wet curtain fan, a high-pressure spray device, a roof sprinkler device, and a root irrigation water device, characterized in that: It also includes a groundwater temperature control system; The underground water source temperature control system includes a water pump system for extracting underground water from the underground aquifer, a backfill well connected to the underground aquifer, and an air heat exchanger, which is arranged in the greenhouse; The water outlet of the water pump system is connected to the inlet of the air heat exchanger, and the outlet of the air heat exchanger is connected to the backfill well; The integrated environmental control system signal controls the start switch of the water pump system.

2. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to claim 1 is characterized in that: It also includes an air supply system, which includes an air duct arranged along the upper edge of the greenhouse, with air outlets facing the greenhouse arranged on the air duct, a fan is arranged at one end of the air duct, the air outlet of the fan faces into the air duct, and an air heat exchanger is installed in front of the air outlet of the fan.

3. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to any one of claims 1-2, characterized in that: The air heat exchanger adopts one of a plate-fin heat exchanger and a tube heat exchanger.

4. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to claim 1 is characterized in that: It includes using a water source heat pump system for exchanging heat with groundwater as a groundwater source temperature control system; The water source heat pump system comprises a coolant outlet and a coolant inlet, the coolant outlet is connected to the inlet of the air heat exchanger, and the outlet of the air heat exchanger is connected to the coolant inlet; The cooling medium is one of air and water.

5. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to claim 1 is characterized in that: It also includes a solar thermal storage system, which includes a water storage and heat preservation tank and a collector for absorbing solar energy; The water outlet of the water pump is connected to the water storage and thermal insulation water tank, and the water outlet of the water storage and thermal insulation water tank is connected to the backfill well; The integrated environmental control system controls the water pump to transport groundwater to the water storage and insulation tank. After the water storage and insulation tank is heated up, the integrated environmental control system opens the water outlet of the water storage and insulation tank and sends the hot water back to the underground aquifer through the backfill well.

6. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to claim 1 is characterized in that: It also includes a peak-shifting heat storage system; The off-peak heat storage system operates during off-peak hours and includes a heating chamber in which an electric heating tube is arranged; The water pump draws groundwater from the underground aquifer into the heating chamber, and the water outlet of the heating chamber is connected to the backfill well.

7. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to claim 1 is characterized in that: The smart greenhouse also includes a comprehensive cooling and humidification system; The comprehensive cooling and humidifying system includes a water supply system, the water source of which comes from the underground aquifer, and the water of the water supply system is supplied to the wet curtain fan, the high-pressure spray device, the roof sprinkler device, and the root irrigation water device.

8. The environmentally adaptive intelligent greenhouse based on natural thermal energy allocation according to claim 1 is characterized in that: It also includes a wind power heat storage system; The wind power heat storage system includes a wind turbine generator and a water storage and heat preservation box. A heating device is arranged in the water storage and heat preservation box. The power supply of the heating device is connected to the wind turbine generator. The water outlet of the water pump is connected to the water storage and insulation box, and the water outlet of the water storage and insulation box is connected to the backfill well; The integrated environmental control system controls the water inlet and outlet of the water storage and insulation tank.

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