Photovoltaic power generation and air water taking irrigation system

Abstract

The invention provides a photovoltaic power generation and air water taking irrigation system, comprising: a photovoltaic power generation module for generating electric energy by using light energy; the gel adsorption module is connected with the photovoltaic power generation module and is used for adsorbing water vapor in air by using gel and driving the gel to desorb and release the water vapor by using waste heat generated by the photovoltaic power generation module; the condensation water collection module is connected with the gel adsorption module and is used for condensing the water vapor to obtain condensed water; the crop irrigation module is connected with the condensation water collection module and is used for irrigating crops by utilizing the collected condensate water; the soil detection module is connected with the crop irrigation module and used for controlling irrigation according to the detected crop root system soil humidity, collaborative production of water, electricity and crops can be achieved under the condition that no external input exists in the island reef environment, and the problems that in the island reef environment, fresh water is in shortage, electricity is insufficient, and self-sufficiency of agricultural production is difficult are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sustainable irrigation devices, in particular to a photovoltaic power generation and air water extraction irrigation system. BACKGROUND

[0002] In off-grid environments such as islands, a small amount of flexible and convenient fresh water resources and power supply is of great significance to guarantee the basic life of personnel and carry out small-scale agricultural production. However, the current supply mode has various problems: in terms of fresh water supply, traditional fresh water transportation by ship has long transportation period and high cost; seawater desalination equipment has high requirements for energy supply and maintenance conditions, and is complex, suitable for large-scale water supply occasions, not suitable for small-scale, temporary deployment and frequent personnel flow in off-grid island environment, and existing air water extraction devices can extract fresh water from air, but most of them have low adsorption efficiency, high desorption temperature, and need external power supply, which is difficult to stably operate in island areas without external energy support. In terms of power supply, the existing photovoltaic power supply system can provide off-grid power, but the high temperature and high humidity environment of island areas will significantly reduce the efficiency of photovoltaic panels, and the waste heat utilization problem is usually not considered, resulting in waste of waste heat. As for the irrigation system, the traditional irrigation system generally relies on pipe network or high-level water tower, which is difficult to deploy and cannot meet the small-scale flexible planting demand in off-grid areas, and is also difficult to resist the influence of salt fog corrosion and other harsh environments, and generally independent of energy-water acquisition system, which has low system coupling degree and slow response. SUMMARY

[0003] The present application is to solve the above problems, and aims to provide a photovoltaic power generation and air water extraction irrigation system.

[0004] The present application provides a photovoltaic power generation and air water extraction irrigation system, which has the following characteristics: a photovoltaic power generation module for generating electric energy by using light energy; a gel adsorption module connected with the photovoltaic power generation module, for adsorbing water vapor in air by using gel and driving gel desorption by using waste heat generated by the photovoltaic power generation module to release water vapor; a condensation water collection module connected with the gel adsorption module, for obtaining condensed water by condensing water vapor; a crop irrigation module connected with the condensation water collection module, for irrigating crops by using collected condensed water; and a soil detection module connected with the crop irrigation module, for controlling irrigation according to detected soil humidity of crop root system.

[0005] In the photovoltaic power generation and air water extraction irrigation system provided by the present application, the photovoltaic power generation module can further include: a photovoltaic panel for converting light energy into electric energy; and a convection isolator connected with the photovoltaic panel and arranged on the upper surface of the photovoltaic panel, for improving the heat dissipation efficiency of the photovoltaic panel and making the working temperature of the photovoltaic panel lower than the design critical temperature.

[0006] In the photovoltaic power generation and air water extraction irrigation system, the convection isolator and the photovoltaic panel form a detachable sliding structure through an embedded chute.

[0007] In the photovoltaic power generation and air water extraction irrigation system, the gel adsorption module comprises a dustproof film layer connected to the lower surface of the photovoltaic panel, used for blocking salt mist and suspended particles in the air; a gel adsorption layer connected to the lower surface of the dustproof film layer, used for absorbing moisture in the air; and a heat preservation layer connected to the lower surface of the gel adsorption layer and wrapped around the lower surface of the gel adsorption layer, used for preventing heat loss, maintaining the temperature required for condensation and isolating external environmental pollution.

[0008] In the photovoltaic power generation and air water extraction irrigation system, the gel adsorption layer is a porous structure, and a hygroscopic salt is embedded in the pores of the gel adsorption layer.

[0009] In the photovoltaic power generation and air water extraction irrigation system, the condensation water collection module comprises a condensation channel connected to the gel adsorption layer, used for improving condensation efficiency and avoiding condensation water backflow interference.

[0010] In the photovoltaic power generation and air water extraction irrigation system, the crop irrigation module comprises:

[0011] a siphon connected to the condensation water collection module, used for conveying condensation water;

[0012] a water storage tank connected to the siphon, used for storing condensation water;

[0013] a water pump connected to the water storage tank, used for pumping condensation water into the soil of crop roots;

[0014] an electric wire electrically connected to the water pump and the photovoltaic power generation module respectively, used for supplying power to the water pump by using the electric energy generated by the photovoltaic power generation module.

[0015] In the photovoltaic power generation and air water extraction irrigation system, a free guide interface is further arranged between the siphon and the water storage tank, used for maintaining the stability of the siphon by adapting to the change of the height difference of the photovoltaic power generation and air water extraction irrigation system.

[0016] In the photovoltaic power generation and air water extraction irrigation system, the photovoltaic power generation module, the gel adsorption module and the condensation water collection module are vertically stacked in sequence to form a vertical stacking structure.

[0017] Effects of the invention

[0018] According to the photovoltaic power generation and air water irrigation system, the photovoltaic power generation module is used for generating electric energy by using light energy; the gel adsorption module is connected with the photovoltaic power generation module and is used for adsorbing water vapor in air by using gel and driving gel desorption by using waste heat generated by the photovoltaic power generation module to release water vapor; the condensation water collecting module is connected with the gel adsorption module and is used for obtaining condensed water by condensing water vapor; the crop irrigation module is connected with the condensation water collecting module and is used for irrigating crops by using collected condensed water; and the soil detection module is connected with the crop irrigation module and is used for controlling irrigation according to detected soil humidity of crop roots, so that the photovoltaic power generation and air water irrigation system can realize water, electricity and crop collaborative production without external input in an island environment, and solves the problems of freshwater shortage, insufficient power and difficult self-sufficiency of agricultural production in the island environment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the photovoltaic power generation and air water irrigation system in the embodiment of the present application.

[0020] Figure 2 is a working principle schematic diagram of the photovoltaic power generation and air water irrigation system in the embodiment of the present application. DETAILED DESCRIPTION

[0021] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the following embodiments will be specifically described in combination with the drawings.

[0023] EMBODIMENT

[0024] Figure 1 is a structural schematic diagram of the photovoltaic power generation and air water irrigation system in the embodiment of the present application.

[0025] As Figure 1As shown, the embodiment provides a photovoltaic power generation and air water irrigation system 100, comprising: a photovoltaic power generation module 1, a gel adsorption module 2, a condensation water collection module 3, a crop irrigation module 4, and a soil detection module 5.

[0026] The photovoltaic power generation module 1 is used to generate electric energy by using light energy.

[0027] The photovoltaic power generation module 1 comprises a photovoltaic panel 10 and a convection isolator 11.

[0028] The photovoltaic panel 10 is used to convert light energy into electric energy.

[0029] The convection isolator 11 is connected to the photovoltaic panel and is arranged on the upper surface of the photovoltaic panel, and is used to improve the heat dissipation efficiency of the photovoltaic panel and make the working temperature of the photovoltaic panel lower than the design critical temperature. The light transmittance of the convection isolator 11 is more than 92%, which can effectively reduce the convection heat loss, and at the same time has good waterproof and dustproof performance, protects the photovoltaic panel 10 from the erosion of the external environment, and improves the photoelectric conversion efficiency.

[0030] The convection isolator 11 and the photovoltaic panel 10 form a detachable sliding structure through an embedded sliding groove, and the corresponding number of the convection isolator 11 and the photovoltaic panel 10 is 2:1. The corresponding number of the convection isolator 11 and the photovoltaic panel 10 is 2:1, which is determined by experiments to be the optimal solution of comprehensive thermal management, structural reliability and maintainability. Such arrangement can form a symmetrical air flow channel, uniformly disperse heat, and avoid local overheating.

[0031] The gel adsorption module 2 is connected to the photovoltaic power generation module 1, and is used to adsorb water vapor in the air by using gel and to drive the gel desorption by using the waste heat generated by the photovoltaic power generation module 1 to release water vapor.

[0032] The gel adsorption module 2 comprises a dustproof film layer 20, a gel adsorption layer 21, and a heat preservation layer 22.

[0033] The dustproof film layer 20 is connected to the lower surface of the photovoltaic panel 10, and is used to block salt mist and suspended particles in the air. The dustproof film layer 20 uses a material with excellent air permeability and filtering performance as a base material.

[0034] The gel adsorption layer 21 is connected to the lower surface of the dustproof film layer 20, and is used to absorb moisture in the air. The gel adsorption layer 21 is a porous structure and uses a hydrophilic polymer material. The pores of the gel adsorption layer 21 also embed hygroscopic salt.

[0035] The hydrophilic polymer material has a high specific surface area and a rich microporous structure, and the hygroscopic salt uses lithium chloride or calcium chloride.

[0036] The heat preservation layer 22 is connected with the lower surface of the gel adsorption layer 21 and covers the lower surface of the gel adsorption layer 21, so as to prevent heat loss, maintain the temperature required for condensation and isolate external environmental pollution. The heat preservation layer 22 is made of a material with excellent heat insulation performance.

[0037] The condensation water collecting module 3 is connected with the gel adsorption module 2, and is used for condensing water vapor to obtain condensed water. The condensation water collecting module 3 comprises a condensation channel connected with the gel adsorption layer 21, so as to improve the condensation efficiency and avoid the interference of backflow of condensed water. The condensation water collecting module 3 is made of a metal material with high thermal conductivity.

[0038] The crop irrigation module 4 is connected with the condensation water collecting module 3, and is used for irrigating crops by using the collected condensed water.

[0039] The crop irrigation module 4 comprises a siphon pipe 40, a water storage tank 41, a water pump 42 and an electric wire 43.

[0040] The siphon pipe 40 is connected with the condensation water collecting module 3, and is used for conveying condensed water. The siphon pipe 40 realizes pressureless water conveying by using the siphon principle.

[0041] The water storage tank 41 is connected with the siphon pipe 40, and is used for storing condensed water.

[0042] The water pump 42 is connected with the water storage tank 41, and is used for pumping condensed water into the soil of the crop root system.

[0043] The electric wire 43 is electrically connected with the water pump 42 and the photovoltaic power generation module 1 respectively, and is used for supplying power to the water pump 42 by using the electric energy generated by the photovoltaic power generation module 1.

[0044] The electric wire 43 is made of a material with waterproof, corrosion-resistant and good conductivity.

[0045] A free guide interface is further arranged between the siphon pipe 40 and the water storage tank 41, so as to adapt to the change of height difference of the photovoltaic power generation and air water harvesting irrigation system 100 and maintain the stability of siphoning of the siphon pipe 40.

[0046] The soil detection module 5 is connected with the crop irrigation module 4, and is used for controlling irrigation according to the detected soil humidity of the crop root system. The soil detection module 5 is signal-connected with the water pump 42, and transmits real-time data of the soil to the water pump 42.

[0047] The photovoltaic power generation module 1, the gel adsorption module 2 and the condensation water collecting module 3 are vertically stacked in sequence, so as to form a vertical stacking structure.

[0048] Figure 2 FIG. 1 is a schematic diagram of the working principle of the photovoltaic power generation and air water harvesting irrigation system in the embodiment of the present application.

[0049] As shown in FIG. 1, the photovoltaic power generation and air water harvesting irrigation system 100 comprises a photovoltaic power generation module 1, a gel adsorption module 2, a condensation water collecting module 3, a crop irrigation module 4 and a soil detection module 5. Figure 2As shown, the working principle of the photovoltaic power generation and air water extraction irrigation system is as follows:

[0050] Before entering the system, the air is first filtered by the high-air-permeability dustproof film layer 20. The dustproof film layer 20 is made of a material with excellent air permeability and filtering performance, which can effectively block the fine particles and salt mist suspended in the air, ensuring that the air entering the system is clean. Subsequently, the purified air enters the gel adsorption module 2, which is made of a porous composite polymer material with embedded hygroscopic salt. The gel adsorption module 2 can efficiently adsorb water vapor in the air. During the day, the photovoltaic power generation module 1 converts light energy into electrical energy through the photoelectric effect. The waste heat generated by the photovoltaic power generation module 1 is used to drive the gel adsorption module 2, releasing the adsorbed water vapor while removing a large amount of waste heat, thereby preventing overheating of the photovoltaic panel 10 and improving the power generation efficiency. The released water vapor then enters the condensation water collection module 3. When the water vapor contacts the condensation channel on the surface of the condensation water collection module 3, it quickly releases latent heat and converts into liquid water. The liquid water flows into the lower storage tank 41 through the siphon effect of the siphon pipe 40. The soil detection module 5 monitors the moisture state of the soil in the area where the crops have been planted in real time. When the soil moisture is low, the soil detection module 5 feeds back data to the water pump 42. The water pump 42 uses the electrical energy generated by the photovoltaic power generation module 1 to accurately deliver water from the storage tank 41 to the crop root zone, achieving precise irrigation.

[0051] Effects of the embodiment

[0052] The photovoltaic power generation and air water extraction irrigation system of the present embodiment includes a photovoltaic power generation module for generating electrical energy using light energy, a gel adsorption module connected to the photovoltaic power generation module for adsorbing water vapor in the air using gel and desorbing the gel using the waste heat generated by the photovoltaic power generation module to release water vapor, a condensation water collection module connected to the gel adsorption module for condensing water vapor to obtain condensed water, a crop irrigation module connected to the condensation water collection module for irrigating crops using the collected condensed water, and a soil detection module connected to the crop irrigation module for controlling irrigation based on the detected soil moisture in the crop root zone. Therefore, the photovoltaic power generation and air water extraction irrigation system of the present invention can realize the coordinated production of water, electricity, and crops without external input in an island environment, solving the problems of freshwater shortage, power shortage, and difficulty in self-sufficient agricultural production in island environments.

[0053] The present embodiment also uses a convection isolator to effectively reduce convective heat loss.

[0054] The present embodiment also provides a dustproof film layer to block fine particles and salt mist suspended in the air.

[0055] The gel adsorption layer is arranged in the embodiment, and a composite polymer material is adopted, so that the water vapor adsorption efficiency is remarkably improved.

[0056] The hygroscopic salt in the embodiment also adopts lithium chloride or calcium chloride with high hygroscopicity, so that the water vapor in the air can be efficiently adsorbed at night.

[0057] The condensation channel is arranged in the embodiment, so that the condensation efficiency is improved, and the continuity and stability of the condensation process are ensured.

[0058] The siphon pipe is also adopted in the embodiment, so that the water is transported without pressure by using the siphon principle, and the energy consumption and operation complexity of the system are reduced.

[0059] The electric wire in the embodiment also adopts a material with waterproof, corrosion-resistant and good electric conductivity, so that the electric wire can be stably operated for a long time in a bad environment such as an island.

[0060] The free guiding interface is arranged between the siphon pipe and the water storage pool in the embodiment, so that the system can adapt to the change of the height difference caused by the instability of the foundation, the growth of plants and the change of soil, and the siphon stability is maintained.

[0061] It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic power generation and air water extraction irrigation system, characterized in that, Comprising: a photovoltaic power generation module for generating electricity using light energy; a gel adsorption module connected to the photovoltaic power generation module for adsorbing water vapor in the air using a gel and desorbing the gel using waste heat generated by the photovoltaic power generation module to release water vapor; a condensation water collection module connected to the gel adsorption module for condensing water vapor to obtain condensed water; a crop irrigation module connected to the condensation water collection module for irrigating crops using collected condensed water; a soil detection module connected to the crop irrigation module for controlling irrigation according to detected soil moisture of crop root systems.

2. The photovoltaic power generation and air water extraction irrigation system of claim 1, Characterized in that: wherein, the photovoltaic power generation module comprises: a photovoltaic panel for converting light energy into electrical energy; a convection isolator connected to the photovoltaic panel and arranged on the upper surface of the photovoltaic panel for improving the heat dissipation efficiency of the photovoltaic panel and keeping the working temperature of the photovoltaic panel below its design critical temperature.

3. The photovoltaic power generation and air water extraction irrigation system according to claim 2, characterized in that: wherein, the convection isolator and the photovoltaic panel form a detachable sliding structure through an embedded sliding groove, and the corresponding number of the convection isolator and the photovoltaic panel is 2:

1.

4. The photovoltaic power generation and air water extraction irrigation system of claim 2, Characterized in that: wherein, the gel adsorption module comprises: a dustproof film layer connected to the lower surface of the photovoltaic panel for blocking salt mist and suspended particles in the air; a gel adsorption layer connected to the lower surface of the dustproof film layer for absorbing moisture in the air; a heat preservation layer connected to the lower surface of the gel adsorption layer and covering the lower surface of the gel adsorption layer for preventing heat loss, maintaining the temperature required for condensation, and isolating external environmental pollution.

5. The photovoltaic power generation and air water extraction irrigation system according to claim 4, characterized in that: wherein the gel adsorption layer is a porous structure using hydrophilic polymer materials, and hygroscopic salt is also embedded in the pores of the gel adsorption layer.

6. The photovoltaic power generation and air water extraction irrigation system according to claim 1, characterized in that: wherein, the condensation water collection module comprises a condensation channel connected to the gel adsorption layer for improving condensation efficiency and avoiding interference of condensate backflow.

7. The photovoltaic power generation and air water extraction irrigation system of claim 1, Characterized in that: wherein, the crop irrigation module comprises: a siphon connected to the condensation water collection module for delivering condensed water; a water storage tank connected to the siphon for storing condensed water; a water pump connected to the water storage tank for pumping condensed water into the soil of crop root systems; an electric wire electrically connected to the water pump and the photovoltaic power generation module respectively for supplying power to the water pump using electricity generated by the photovoltaic power generation module.

8. The photovoltaic power generation and air water extraction irrigation system according to claim 7, characterized in that: a free guide interface is further provided between the siphon and the water storage tank for adapting to changes in height difference of the photovoltaic power generation and air water extraction irrigation system to maintain the stability of siphoning of the siphon.

9. The photovoltaic power generation and air water extraction irrigation system according to claim 1, characterized in that: wherein, the photovoltaic power generation module, the gel adsorption module, and the condensation water collection module are vertically stacked in sequence to form a vertical stacking structure.

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