Solar energy and air energy agriculture, light, pump, heat and electricity integrated buried heating and cooling giant energy storage system

Abstract

The utility model relates to a solar energy and air energy agriculture, light, pump, heat and electricity integrated buried heating and cooling giant energy storage system. Comprising a solar photo-thermal assembly (1), an anti-freezing solution switcher (7), an anti-freezing solution storage tank (8), a plate exchange type heat exchanger (9), a hot water energy storage pool (18), a solar photovoltaic assembly (2), a grid-connected inverter (10), an alternating current confluence cabinet (11), a bidirectional intelligent electric meter (12), a mains supply power grid (13), a power distribution cabinet (14), an intelligent control cabinet (15), an air energy double-source heat pump (16) and a 7 DEG C cold water pool (17). And the like. The utility model forms a complete solar photo-thermal heat collection, solar photovoltaic power generation, air energy heat collection, refrigeration and giant energy storage system, is a zero-carbon economic system perfectly combining multidisciplinary technology and ecological environment protection, can be widely used for central heating, refrigeration and domestic hot water supply of all building bodies, is realized early according to the goal of'carbon neutralization ', and has a wide application prospect. And a blue sky is left for descendants.

Description

Technical Field

[0001] The utility model belongs to a system structure integrating energy storage and utilization; specifically, it belongs to the field of a solar-air energy integrated underground large-scale energy storage system for agriculture, light, pump, heat, and electricity for heating and cooling. Background Art

[0002] Global warming and energy crisis pose severe challenges to the survival and development of humanity. The use of conventional energy sources such as coal and oil is putting increasing pressure on the environment, and at the same time, the reserves of these energy sources are becoming increasingly tight. Currently, with the acceleration of the rural revitalization and new urbanization processes in China, the heating, cooling, and domestic hot water loads of urban residential buildings are consuming a considerable amount of conventional energy. Northern cities often encounter hazy weather during the heating season, with the average air quality index AQI exceeding 150, showing moderate pollution, mainly due to the increase in coal burning. New energy technology is one of the six most decisive technological fields in the economic development of the 21st century, and solar energy is a clean energy source that is inexhaustible and has the advantages of no noise, no pollution, and zero emissions. To solve the problem that building heating, cooling, and domestic hot water consume a huge amount of conventional energy, the purpose of the utility model is to provide a cross-season large-scale energy storage heating and cooling technology that comprehensively utilizes solar photovoltaic power generation, solar thermal collection, air energy, and waste heat, realizing an innovative choice for clean heating and cooling with new energy. It is an innovative technology that perfectly combines multiple disciplines (new energy, architecture, geology, HVAC, water supply and drainage, artificial intelligence, big data, manufacturing, agriculture, etc.) with ecological environmental protection. By gradually reducing or replacing coal heating, this technology can promote the clean utilization of new energy in cities and towns, replace the environmental pollution caused by the inefficient combustion of fossil energy, and is of great significance for achieving zero-carbon heating in cold regions and improving the atmospheric environmental quality. Summary of the Invention

[0003] A solar-air energy integrated underground large-scale energy storage system for agriculture, light, pump, heat, and electricity. Its core lies in sealing up fossil energy through technological innovation and institutional innovation, and completely using new energy zero-carbon technology to provide clean energy heating for urban and rural residents in northern cold regions in winter, and clean energy cooling for urban and rural residents in southern regions in summer and hot water supply throughout the year. The practice of zero-carbon heating economy not only helps to coordinate economic growth and ecological environmental protection, promotes the high-quality development of the heating and cooling industries, but also can inject market vitality into urban and rural construction, achieving the maximization of economic, social, and ecological benefits.

[0004] The utility model is implemented by adopting the following technical solutions:

[0005] Solar and air energy integrated underground large-scale energy storage system for agricultural use, light utilization, pumping, heating and power generation. The system of the present utility model includes a solar thermal component 1, an antifreeze switch 7, an antifreeze liquid storage tank 8, a plate heat exchanger 9, a hot water energy storage tank 18, a solar photovoltaic component 2, a grid-connected inverter 10, an AC busbar cabinet 11, a two-way intelligent electricity meter 12, a mains power grid 13, a power distribution cabinet 14, an intelligent control cabinet 15, an air energy dual-source heat pump 16, and a 7°C cold water tank 17;

[0006] Among them, the solar thermal component 1 is respectively connected to the antifreeze switch 7 and the antifreeze liquid storage tank 8;

[0007] The antifreeze switch 7 is connected to the hot water energy storage tank 18;

[0008] The antifreeze liquid storage tank 8 is connected to the hot water energy storage tank 18 through the plate heat exchanger 9;

[0009] The solar photovoltaic component 2, the grid-connected inverter 10, the AC busbar cabinet 11, the two-way intelligent electricity meter 12, and the mains power grid 13 are connected in sequence;

[0010] The two-way intelligent electricity meter 12, the power distribution cabinet 14, and the intelligent control cabinet 15 are connected in sequence;

[0011] The intelligent control cabinet 15 is connected to the air energy dual-source heat pump 16;

[0012] The air energy dual-source heat pump 16 is respectively connected to the 7°C cold water tank 17 and the hot water energy storage tank 18.

[0013] The system of the present utility model includes a water source heat pump 19 and an air energy heat pump 20;

[0014] The intelligent control cabinet 15 is respectively connected to the water source heat pump 19 and the air energy heat pump 20;

[0015] The air energy dual-source heat pump 16 is respectively connected to the water source heat pump 19 and the air energy heat pump 20;

[0016] The hot water energy storage tank 18 is respectively connected to the water source heat pump 19 and the air energy heat pump 20.

[0017] The system of the present utility model includes an intelligent cold water meter 27, a user cold radiator 28, and a cold water supply and return device 29;

[0018] The air energy dual-source heat pump 16, the 7°C cold water tank 17, the intelligent cold water meter 27, the user cold radiator 28, and the cold water supply and return device 29 are connected in sequence.

[0019] The system of the present utility model includes a constant temperature energy storage tank 21, an intelligent heating water meter 22, a user radiator 23, and a heating water supply and return device 24;

[0020] The constant-temperature energy storage pool 21 is respectively connected to the water-source heat pump 19 and the air-source heat pump 20;

[0021] The constant-temperature energy storage pool 21, the intelligent heating water meter 22, the user radiator 23, and the heating return water device 24 are connected in sequence.

[0022] The system of the present utility model includes a constant-temperature energy storage pool 21, an intelligent hot water meter 25, and a user domestic hot water device 26;

[0023] The constant-temperature energy storage pool 21, the intelligent hot water meter 25, and the user domestic hot water device 26 are connected in sequence.

[0024] The system of the present utility model includes a return water circulation pool 30; the cooling return water device 29 is connected to the water-source heat pump 19 through the return water circulation pool 30.

[0025] The system of the present utility model includes a return water circulation pool 30; the heating return water device 24 is connected to the water-source heat pump 19 through the return water circulation pool 30.

[0026] The system of the present utility model includes a standard steel frame A3, a standard steel frame B4, an agricultural greenhouse 5, and a building roof 6;

[0027] The solar thermal component 1, the standard steel frame A3, and the agricultural greenhouse 5 are connected in sequence;

[0028] The solar photovoltaic component 2, the standard steel frame B4, and the building roof 6 are connected in sequence;

[0029] The solar photovoltaic component 2 is connected to the standard steel frame A3 and the agricultural greenhouse 5 in sequence.

[0030] The constant-temperature energy storage pool 21 in the system of the present utility model is arranged below the ground.

[0031] The 7°C cold water pool 17, the hot water energy storage pool 18, and the return water circulation pool 30 in the system of the present utility model are all arranged below the ground.

[0032] The usage method of the system of the present utility model, the method includes:

[0033] The heat absorption fins in the cavity of the solar thermal component 1 absorb heat energy and transfer it to the refrigerant medium in the circulation pipe for circulating heat collection, converting solar energy into heat energy;

[0034] When the ambient air temperature is above zero, clean water is used for circulating heat collection, and the heat medium is switched to clean water for circulating heat absorption through the antifreeze switch 7, and the hot water is directly stored in the hot water energy storage pool 18;

[0035] When the ambient temperature is below zero degrees Celsius, the heat medium is switched to the antifreeze for circulation and heat absorption through the antifreeze switch 7. The antifreeze is switched to the connecting plate of the antifreeze storage tank 8 to exchange heat with the plate heat exchanger 9, and the hot water is stored in the hot water energy storage tank 18.

[0036] The solar cells in the solar photovoltaic module 2 absorb the solar radiation energy to generate direct current. The direct current is converted into alternating current that meets the grid requirements through the grid-connected inverter 10. The alternating current is respectively connected to the AC busbar cabinet 11, the two-way smart meter 12, the commercial power grid 13, the power distribution cabinet 14, and the intelligent control cabinet 15 through cables. The intelligent control cabinet 15 controls and regulates the operation of the system equipment, and supplies the alternating current to the air source dual-source heat pump 16, the water source heat pump 19, and the air source heat pump 20 respectively. The electricity that the equipment load does not use up is input into the commercial power grid 13. In case of extreme weather conditions, the electricity for the system equipment is supplied by the commercial power grid 13 to ensure the safe operation of heating during the heating season.

[0037] Connect to the intelligent control cabinet 15 through the mobile phone mobile network; the intelligent control cabinet 15 is connected to the air source dual-source heat pump 16, the water source heat pump 19, and the air source heat pump 20, and respectively remotely monitors the operation status and faults of the equipment in real time to realize remote startup and shutdown.

[0038] The air source dual-source heat pump 16 absorbs the heat energy in the air and is respectively connected to the 7°C cold water pool 17 and the hot water energy storage tank 18. It saves energy during winter shutdown and operates for refrigeration and waste heat recovery and energy storage in summer.

[0039] The air source dual-source heat pump 16 saves energy and shuts down in winter. In summer, it starts up to provide 7°C cold water for users to dissipate heat, and at the same time collects waste heat and stores it in the hot water energy storage tank 18.

[0040] The water source heat pump 19 is respectively connected to the hot water energy storage tank 18, the constant temperature energy storage tank 21, and the return water circulation pool 30; the water source heat pump 19 operates to produce hot water for heating.

[0041] The air source heat pump 20 is connected to the hot water energy storage tank 18 and the constant temperature energy storage tank 21. When the ambient temperature is lower than 10°C, the air source heat pump 20 shuts down; when the ambient temperature is higher than 10°C, the air source heat pump 20 starts up.

[0042] The beneficial effects of the present utility model are:

[0043] First, the present utility model creatively adopts a brand-new intelligent integration technology to improve the comprehensive conversion efficiency of the combination of the solar thermal system, the solar photovoltaic system, and the air source. It is more practical for heating in the north in winter, cooling in the south in summer, and supplying domestic hot water throughout the year. It is applicable to centralized heating, cooling, and domestic hot water supply for all building types (civil buildings, industrial and commercial buildings, industrial buildings, agricultural buildings, military barracks, schools, hospitals, hotels, etc.).

[0044] II. The utility model creatively solves the problems that in the north, central heating in winter, in the south, central cooling in summer, and the energy consumption of domestic hot water throughout the year rely on fossil fuels such as coal, oil, and natural gas, and the carbon emissions generated by fossil fuels are intensifying climate change, damaging environmental quality, affecting water resources and biodiversity, and increasing environmental pollution and health risks. The utility model creatively adopts solar energy, air energy, and a giant energy storage system for cross-seasonal operation to achieve zero-carbon economic operation of building heating, cooling, and domestic hot water, and to reach the carbon neutrality goal in advance.

[0045] III. The utility model creatively maximizes the energy-saving effect by comprehensively utilizing intelligent devices:

[0046] 1) When the environmental temperature of the solar thermal component 1 of the utility model is above zero degree Celsius, clean water circulation is adopted for heat collection to reduce power consumption.

[0047] When the environmental temperature is below zero degree Celsius, antifreeze circulation is adopted for heat collection to ensure solar heat collection and heating in winter.

[0048] 2) The solar photovoltaic module 2 of the utility model adopts distributed photovoltaic power generation on the roof of the heating area, self-consumes the generated electricity, and feeds the surplus electricity into the grid to reduce the energy consumption loss of the transmission grid, and reduce the pressure and safety of the regional transmission grid and distribution grid.

[0049] 3) The air source dual-source heat pump 16 of the utility model is connected to the 7°C cold water pool 17 and the hot water energy storage pool 18. It shuts down to save energy in winter, starts to cool in summer, stores and utilizes waste heat, and the comprehensive COP of operation on both the cold and hot sides can reach about 9.0.

[0050] 4) The water source heat pump 19 of the utility model is connected to the hot water energy storage pool 18, the constant temperature energy storage pool 21, and the return water circulation pool 30. The operation of the water source heat pump 19 is not affected by extreme weather, and the annual operation COP can reach about 4.5.

[0051] 5) The air source heat pump 20 of the utility model is connected to the hot water energy storage pool 18 and the constant temperature energy storage pool 21. When the environmental temperature is lower than 10°C, the air source heat pump 20 shuts down, and when the environmental temperature is higher than 10°C, the air source heat pump 20 starts. The annual operation COP can reach about 4.2.

[0052] 6) The underground large-scale heating and cooling energy storage system of the utility model is a cross-seasonal energy storage heating and cooling system. This system includes a 7°C cold water pool 17 with the water temperature set at 7°C for users to dissipate heat, a hot water energy storage pool 18 with the water temperature set at low-grade hot water of 10°C - 40°C, a return water circulation pool 30 for heating and cooling return water with the water temperature of about 35°C, and a constant temperature energy storage pool 21 with the water temperature set at 60°C for users' heating and domestic hot water.

[0053] 7) The agricultural greenhouse 5 of the present utility model is a semi-buried building. The building materials for the greenhouse roof adopt solar thermal components 1 for heat collection and energy storage and solar photovoltaic components 2 for power generation and conversion into hot water for energy storage. Weak-light solar cells are used around the greenhouse for power generation and conversion into hot water for energy storage. The agricultural greenhouse 5 is positioned as the urban and rural vegetable basket project, which is a supporting project for the giant energy storage system, saving resources and land. The purpose of building the agricultural greenhouse 5 is to solve the problem of land use approval for the giant energy storage system.

[0054] 8) According to the national energy administration's policy on rooftop distributed photovoltaic power generation, the present utility model constructs distributed photovoltaic power generation projects on the rooftops of all residents in the heating area. The power is "spontaneously used by the users themselves, and the surplus electricity is sent to the grid", which benefits the people and is used by the people, reducing the high burden of heating costs for users in the heating area in winter.

[0055] 9) The municipal power grid 13 of the present utility model is the largest "battery" with zero investment in the system. The national power grid has covered all rural and urban areas in the country. In case of extreme weather, when the solar photovoltaic power generation of this system is "spontaneously used by the users themselves, and the surplus electricity is sent to the grid", the municipal power grid 13 (battery) supplies power to ensure the heating safety of the system.

[0056] In summary, the present utility model is a people's livelihood project and a popular project that adopts new energy comprehensive innovation technology and environmental protection, which benefits the country and the people. Description of the Drawings

[0057] Figure 1 It is a block diagram of the solar energy-air energy integrated underground heating and cooling giant energy storage system for agriculture, light, pump, heat and electricity of the present utility model;

[0058] Each label in the figure represents in sequence: 1 - solar thermal component, 2 - solar photovoltaic component, 3 - standard steel frame A, 4 - standard steel frame B, 5 - agricultural greenhouse, 6 - building roof, 7 - antifreeze switch, 8 - antifreeze storage tank, 9 - plate heat exchanger, 10 - grid-connected inverter, 11 - AC busbar cabinet, 12 - two-way intelligent electricity meter, 13 - municipal power grid, 14 - power distribution cabinet, 15 - intelligent control cabinet, 16 - air energy dual-source heat pump, 17 - 7°C cold water pool, 18 - hot water energy storage pool, 19 - water source heat pump, 20 - air energy heat pump, 21 - constant temperature energy storage pool, 22 - intelligent heating water meter, 23 - user radiator, 24 - heating return water device, 25 - intelligent hot water meter, 26 - user domestic hot water equipment, 27 - intelligent cold water supply meter, 28 - user cold radiator, 29 - cold supply return water device, 30 - return water circulation pool. Detailed Embodiment

[0059] As Figure 1 shown, the structure and connection relationship of the solar energy-air energy integrated underground heating and cooling giant energy storage system for agriculture, light, pump, heat and electricity of the present utility model include:

[0060] The solar thermal energy component 1 is respectively connected to the standard steel frame A3, the agricultural greenhouse 5, the antifreeze switch 7, the antifreeze liquid storage tank 8, the plate heat exchanger 9, and the hot water energy storage tank 18 through pipelines and connectors;

[0061] The solar photovoltaic component 2 is respectively connected to the standard steel frame B4, the agricultural greenhouse 5, the building roof 6, the grid-connected inverter 10, the AC busbar cabinet 11, the two-way intelligent electricity meter 12, the mains power grid 13, the power distribution cabinet 14, and the intelligent control cabinet 15 through cables, pipelines and connectors;

[0062] The intelligent control cabinet 15 is respectively connected to the air source dual-source heat pump 16, the water source heat pump 19, and the air source heat pump 20;

[0063] The air source dual-source heat pump 16 is respectively connected to the 7°C cold water tank 17 and the hot water energy storage tank 18;

[0064] The water source heat pump 19 is respectively connected to the hot water energy storage tank 18, the constant temperature energy storage tank 21, and the return water circulation tank 30;

[0065] The air source heat pump 20 is respectively connected to the hot water energy storage tank 18 and the constant temperature energy storage tank 21;

[0066] The 7°C cold water tank 17 is sequentially connected to the intelligent cold water supply meter 27, the user's cold radiation fin 28, the cold supply and return water device 29, and the return water circulation tank 30 through pipelines;

[0067] The constant temperature energy storage tank 21 is respectively connected to the intelligent heating water meter 22, the user's heat radiation fin 23, the heating return water device 24, and the return water circulation tank 30 through pipelines;

[0068] The constant temperature energy storage tank 21 is connected to the intelligent hot water meter 25 and the user's domestic hot water equipment 26 through pipelines;

[0069] The above connections include cable connections or pipeline connections.

[0070] The solar thermal energy component 1 of the present utility model is respectively connected to the antifreeze switch 7, the antifreeze liquid storage tank 8, the plate heat exchanger 9, and the hot water energy storage tank 18. When the ambient temperature is below 0°C, it is switched to the antifreeze liquid storage tank 8 for circulating heat collection through the antifreeze switch 7, and the hot water is stored in the hot water energy storage tank 18 through heat exchange by the plate heat exchanger 9. When the ambient temperature is above 0°C, it is switched to clean water for circulating heat collection through the antifreeze switch 7, and the hot water is directly stored in the hot water energy storage tank 18.

[0071] The solar photovoltaic component 2 of the present utility model is respectively connected to the standard steel frame B4, the building roof 6, the grid-connected inverter 10, the AC busbar cabinet 11, the two-way intelligent electricity meter 12, the mains power grid 13, the power distribution cabinet 14, and the intelligent control cabinet 15;

[0072] The intelligent control cabinet 15 is respectively connected to the air energy dual-source heat pump 16, the water source heat pump 19, and the air energy heat pump 20.

[0073] The solar photovoltaic module 2 absorbs solar radiation energy to generate direct current, and the direct current is converted into alternating current that meets the grid requirements through the grid-connected inverter 10. The alternating current is respectively connected to the AC busbar cabinet 11, the two-way intelligent electricity meter 12, the commercial power grid 13, the power distribution cabinet 14, and the intelligent control cabinet 15 through cables.

[0074] The intelligent control cabinet 15 is respectively connected to the air energy dual-source heat pump 16, the water source heat pump 19, and the air energy heat pump 20. The electricity generated by the system of the present utility model is for self-use, and the surplus electricity is fed into the grid. In case of extreme weather conditions, the electricity consumption of the system equipment is supplied by the commercial power grid 13 to ensure the safe operation of heating.

[0075] The air energy dual-source heat pump 16 of the present utility model is respectively connected to the 7°C cold water pool 17 and the hot water energy storage pool 18. It starts and runs when the ambient temperature is above 28°C, and shuts down for energy conservation when the ambient temperature is below 28°C. In summer, when the ambient temperature is above 28°C, while the air energy dual-source heat pump 16 is refrigerating, the waste heat is collected and stored in the hot water energy storage pool 18. When the air energy dual-source heat pump 16 operates in summer, the comprehensive COP energy efficiency ratio on both the cold and hot sides can reach about 9.0.

[0076] The air energy heat pump 20 of the present utility model is respectively connected to the hot water energy storage pool 18 and the constant temperature energy storage pool 21. When the ambient temperature is above 10°C, the COP of the air energy heat pump 20 during operation can reach about 4.2.

[0077] The water source heat pump 19 of the present utility model is respectively connected to the hot water energy storage pool 18, the constant temperature energy storage pool 21, and the return water circulation pool 30. The operation of the water source heat pump 19 is not affected by extreme weather, ensuring the supply of 60°C high-quality hot water during the heating season. The annual operating COP can reach about 4.5.

[0078] The functional positioning of the agricultural greenhouse 5 of the present utility model is the supporting project of the urban and rural vegetable baskets of the system of the present utility model. It is constructed in a semi-underground manner, and the shed roof is made of solar thermal and photovoltaic panels. The geothermal temperature and the waste heat of more than 50°C generated by the backside power generation of the solar photovoltaic module 2 are reasonably utilized to increase the heat preservation effect of the greenhouse, achieving the purpose of waste heat reuse.

[0079] In order to reduce the heating cost, the building roof 6 is connected to the standard steel frame B4 and the solar photovoltaic module 2. In the heating area, the national distributed rooftop photovoltaic power generation policy is fully utilized on the roof for self-use, and the surplus electricity is fed into the grid. It achieves the purpose of taking from the people and using for the people, reduces the winter heating operation cost, and truly makes the heating industry a livelihood project and a popular project.

[0080] The 7°C cold water pool 17, hot water energy storage pool 18, constant temperature energy storage pool 21, and return water circulation pool 30 of the present utility model are all cast in-situ with reinforced concrete and buried 15 meters below the ground surface. The temperature below the winter frozen soil layer can reach above 6°C, and the surrounding walls of the energy storage pool are filled with thermal insulation materials to enhance the insulation effect. The water temperature of the 7°C cold water pool 17 is set at 7°C, the water temperature of the hot water energy storage pool 18 is set as low-grade hot water, with a water temperature between 10°C and 40°C, the water temperature of the constant temperature energy storage pool 21 is set at 60°C, and the return water circulation pool 30 is for heating and cold return water, with a water temperature of about 35°C.

[0081] The in-ground 7°C cold water pool 17, hot water energy storage pool 18, constant temperature energy storage pool 21, and return water circulation pool 30 have geometric shapes of circular, rectangular, square, and inverted conical. The volume of the hot water storage pool ranges from several thousand cubic meters, tens of thousands of cubic meters to hundreds of thousands of cubic meters, and is selected according to the project needs. No matter how the shape, size, and volume of the pool change, they are all within the protection scope of the present utility model.

[0082] The solar thermal component 1 of the present utility model provides low-grade hot water with a water temperature of about 40°C for the seasonal energy storage of the system of the present utility model throughout the year.

[0083] The municipal power grid 13 of the present utility model is the largest zero-investment standby "battery" for the present utility model. The electricity generated by the solar photovoltaic module 2 is used by the equipment of this system. The electricity that is not used up by the equipment is input into the municipal power grid 13. In case of extreme weather conditions, the electricity for the equipment of this system is supplied by the municipal power grid 13 to ensure the absolute safety and reliability of the winter heating of this system.

[0084] The solar thermal component 1 of the present utility model is connected to the standard steel frame A3 through a connecting piece, and the standard steel frame A3 is set as the agricultural greenhouse frame and is fixedly arranged on the agricultural greenhouse 5.

[0085] The solar photovoltaic module 2 of the present utility model is connected to the standard steel frame B4 through a connecting piece, and the standard steel frame B4 is fixedly arranged on the agricultural greenhouse 5 and the building roof 6.

[0086] The operation process of this system is as follows:

[0087] For the usage method of the above-mentioned solar air energy integrated agricultural, optical, pump, thermal, and electrical in-ground heating and cooling giant energy storage system of the present utility model, the method includes that the heat absorption fins in the cavity of the solar thermal component 1 absorb heat energy and transfer it to the refrigerant medium in the circulation pipe for circulating heat collection, converting solar energy into heat energy. When the ambient air temperature is above zero, clean water is used for circulating heat collection. Through the antifreeze switch 7, the heat medium is switched to clean water for circulating heat absorption, and the hot water is directly stored in the hot water energy storage pool 18. When the ambient air temperature is below zero, through the antifreeze switch 7, the heat medium is switched to antifreeze for circulating heat absorption, and the antifreeze is switched to the antifreeze storage tank 8 to connect to the plate heat exchanger 9 for heat exchange, and the hot water is stored in the hot water energy storage pool 18.

[0088] The solar cells in the solar photovoltaic module 2 absorb the solar radiation energy to generate direct current, and the direct current is converted into alternating current that meets the requirements of the power grid through the grid-connected inverter 10. The alternating current is respectively connected to the AC busbar cabinet 11, the two-way intelligent electricity meter 12, the mains power grid 13, the power distribution cabinet 14, and the intelligent control cabinet 15 through cables. The intelligent control cabinet 15 controls and adjusts the operation of the system equipment, and supplies the alternating current to the air-source dual-source heat pump 16, the water-source heat pump 19, and the air-source heat pump 20 respectively. The electricity that the equipment load does not use up is input into the mains power grid 13. In case of extreme weather conditions, the electricity for the system equipment is supplied by the mains power grid 13 to ensure the safe operation of heating during the heating season.

[0089] The intelligent control cabinet 15 is connected to the air-source dual-source heat pump 16, the water-source heat pump 19, and the air-source heat pump 20, and is connected to the intelligent control cabinet 15 through the mobile phone mobile network to respectively monitor the operation status and faults of the equipment in real time remotely, and realize remote startup and shutdown.

[0090] The air-source dual-source heat pump 16 absorbs the heat energy in the air and is respectively connected to the 7°C cold water pool 17 and the hot water energy storage pool 18. It saves energy when shutting down in winter and operates for refrigeration and waste heat recovery and energy storage in summer. The comprehensive COP on both the cold and hot sides can reach about 9.0, and this configuration is more suitable for cooling in hot southern regions and supplying domestic hot water throughout the year.

[0091] The air-source dual-source heat pump 16 shuts down to save energy in winter and starts up to refrigerate in summer, supplying 7°C cold water for users to dissipate heat. At the same time, it collects waste heat and stores it in the hot water energy storage pool 18, achieving the output of 4.8 Kw of hot water heat and 3.5 Kw of air-conditioning cooling capacity for every 1 Kw of electricity consumed. The comprehensive COP on both the cold and hot sides can reach about 9.0 during summer operation, realizing the reuse of energy and environmental protection.

[0092] The water-source heat pump 19 is respectively connected to the hot water energy storage pool 18, the constant temperature energy storage pool 21, and the return water circulation pool 30. The operation of the water-source heat pump 19 is not affected by extreme weather. It can stably produce high-grade 60°C hot water for heating during the heating season, and the annual operation COP can reach about 4.5.

[0093] The air-source heat pump 20 is connected to the hot water energy storage pool 18 and the constant temperature energy storage pool 21. The air-source heat pump 20 shuts down when the ambient temperature is lower than 10°C and starts up when the ambient temperature is higher than 10°C, and the operation COP can reach about 4.2. The constant temperature energy storage pool 21 is connected to the intelligent heating water meter 22, the user radiator 23, the heating return water device 24, and the return water circulation pool 30 through pipelines.

[0094] The constant temperature energy storage pool 21 is connected to the intelligent water meter 25 and the user domestic hot water equipment 26 through pipelines.

[0095] The 7°C cold water pool 17 is connected to the intelligent cold water meter 27, the user's cold radiating fin 28, the cold supply and return water device 29, and the return water circulation pool 30 through pipelines.

[0096] The utility model relates to a solar energy, air energy, agricultural, optical, pumping, heat, and electricity integrated underground large-scale heating and cooling energy storage system, which is a total system of a large-scale energy storage project operating across seasons and consists of six subsystems;

[0097] 1. Solar thermal collector subsystem;

[0098] 2. Roof distributed solar photovoltaic power generation subsystem;

[0099] 3. Air energy collector subsystem;

[0100] 4. Underground large-scale energy storage pool subsystem;

[0101] 5. Semi-underground agricultural greenhouse supporting vegetable basket project subsystem;

[0102] 6. Zero-investment municipal power grid "battery" subsystem.

[0103] The above six subsystems constitute the total system of the underground large-scale energy storage project, which involves new energy technologies such as solar photovoltaic power generation, solar thermal collection, air energy, and waste heat comprehensive utilization. It is a zero-carbon economic system that perfectly combines multi-disciplinary technologies (new energy, architecture, geology, heating ventilation and air conditioning, water supply and drainage, artificial intelligence, big data, manufacturing, agriculture, etc.) with ecological environmental protection. It can be widely used for centralized heating, cooling, and domestic hot water supply in all building types (civil buildings, industrial and commercial buildings, industrial buildings, agricultural buildings, military barracks, schools, hospitals, hotels, etc.), conforms to the early realization of the "carbon neutrality" goal, and leaves a blue sky for future generations.

[0104] The research on solar photovoltaic, solar thermal, and air energy cross-seasonal energy storage heating technology not only has many research significances at the above-mentioned technical levels but also has great significance for the implementation of the underground large-scale energy storage system project. It also plays an important role in promoting rural revitalization, driving regional economic development, and facilitating economic transformation and upgrading. It can be incorporated into the national clean heating big data research platform and comprehensively promoted and implemented nationwide by using advanced means such as the Internet, big data, and cloud computing.

[0105] The key of the utility model is that the comprehensive operation cost of heating and cooling is low. Economically, it is a livelihood project and a popular project with great significance and a trillion-dollar output value.

[0106] The above are only some specific embodiments of the present utility model, and the well-known specific content or common knowledge in the solution is not described in detail herein (including but not limited to abbreviations, contractions, and units commonly used in the art). It should be noted that the above embodiments do not limit the present utility model in any way. For those skilled in the art, any technical solutions obtained by using the methods of equivalent substitution or equivalent transformation fall within the protection scope of the present utility model. The protection scope claimed in this application should be based on the content of its claims, and the specific implementation manners and the like described in the specification can be used to interpret the content of the claims.

Claims

1. The solar and air energy integrated underground large-scale energy storage system for agriculture, photovoltaic power generation, pumping, heating and power generation, characterized in that, The system includes a solar thermal component (1), an antifreeze switcher (7), an antifreeze storage tank (8), a plate heat exchanger (9), a hot water energy storage tank (18), a solar photovoltaic component (2), a grid-connected inverter (10), an AC busbar cabinet (11), a two-way smart meter (12), a mains power grid (13), a power distribution cabinet (14), an intelligent control cabinet (15), an air source dual-source heat pump (16), and a 7°C cold water tank (17); Among them, the solar thermal component (1) is respectively connected to the antifreeze switcher (7) and the antifreeze storage tank (8); The antifreeze switcher (7) is connected to the hot water energy storage tank (18); The antifreeze storage tank (8) is connected to the hot water energy storage tank (18) through the plate heat exchanger (9); The solar photovoltaic component (2), the grid-connected inverter (10), the AC busbar cabinet (11), the two-way smart meter (12), and the mains power grid (13) are connected in sequence; The two-way smart meter (12), the power distribution cabinet (14), and the intelligent control cabinet (15) are connected in sequence; The intelligent control cabinet (15) is connected to the air source dual-source heat pump (16); The air source dual-source heat pump (16) is respectively connected to the 7°C cold water tank (17) and the hot water energy storage tank (18).

2. The system according to claim 1, wherein The system includes a water source heat pump (19) and an air source heat pump (20); The intelligent control cabinet (15) is respectively connected to the water source heat pump (19) and the air source heat pump (20); The air source dual-source heat pump (16) is respectively connected to the water source heat pump (19) and the air source heat pump (20); The hot water energy storage tank (18) is respectively connected to the water source heat pump (19) and the air source heat pump (20).

3. The system according to claim 1, characterized in that, The system includes an intelligent cold water meter (27), a user cooling fin (28), and a cold water supply and return device (29); The air source dual-source heat pump (16), the 7°C cold water tank (17), the intelligent cold water meter (27), the user cooling fin (28), and the cold water supply and return device (29) are connected in sequence; 4. The system according to claim 2, wherein The system includes a constant temperature energy storage tank (21), an intelligent heating water meter (22), a user heating fin (23), and a heating water supply and return device (24); The constant temperature energy storage tank (21) is respectively connected to the water source heat pump (19) and the air source heat pump (20); The constant temperature energy storage tank (21), the intelligent heating water meter (22), the user heating fin (23), and the heating water supply and return device (24) are connected in sequence; 5. The system according to claim 2, wherein The system includes a constant temperature energy storage tank (21), an intelligent hot water meter (25), and a user domestic hot water device (26); The constant temperature energy storage tank (21) is respectively connected to the water source heat pump (19) and the air source heat pump (20); The constant temperature energy storage tank (21), the intelligent hot water meter (25), and the user domestic hot water device (26) are connected in sequence; 6. The system according to claim 3, wherein The system includes a return water circulation tank (30); the cold water supply and return device (29) is connected to the water source heat pump (19) through the return water circulation tank (30).

7. The system according to claim 4, wherein The system includes a return water circulation tank (30); the heating water supply and return device (24) is connected to the water source heat pump (19) through the return water circulation tank (30).

8. The system according to claim 1, wherein The system includes a standard steel frame A (3), a standard steel frame B (4), an agricultural greenhouse (5), and a building roof (6); The solar thermal component (1), the standard steel frame A (3), and the agricultural greenhouse (5) are connected in sequence; The solar photovoltaic component (2), the standard steel frame B (4), and the building roof (6) are connected in sequence; The solar photovoltaic component (2) is connected to the standard steel frame A (3) and the agricultural greenhouse (5) in sequence.

9. The system according to claim 4, characterized in that, The constant temperature energy storage pool (21) in the system is arranged below the ground.

10. The system according to claim 6, wherein The 7°C cold water pool (17), the hot water energy storage pool (18), and the return water circulation pool (30) in the system are all arranged below the ground.

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