Cross-seasonal storage type solar air conditioning system

Abstract

The invention belongs to the field of solar energy utilization, and particularly discloses a cross-seasonal storage type solar air conditioning system which comprises a solar heating device, a high-temperature energy storage device, a steam power generation device, a refrigeration device, an air conditioning device and a PID control unit, and the solar heating device comprises a solar heating tank, a high-temperature energy storage heat supply pipe and a high-temperature energy storage return pipe. A liquid medium is arranged in the solar heating tank; the high-temperature energy storage device comprises a high-temperature energy storage tank for storing a high-temperature liquid medium; the high-temperature energy storage tank is communicated with the solar heating tank through a high-temperature energy storage heat supply pipe and a high-temperature energy storage return pipe; the steam power generation device is connected with the solar heating tank; the refrigerating device is used for providing a cold source for the air-conditioning device; the air conditioning device is connected with the high-temperature energy storage device and the refrigerating device. Through the design, solar energy is efficiently collected through the solar heating device and converted into heat energy, cross-seasonal energy storage is achieved through the high-temperature energy storage device, and the problem of seasonal limitation of solar energy is effectively solved.

Description

Technical Field

[0001] The present application relates to the field of solar energy utilization, and more specifically, to a cross-seasonal storage solar air conditioning system. Background Art

[0002] Solar photovoltaic power generation, as a clean and renewable energy technology, has become the main way to develop and utilize solar energy.

[0003] However, the seasonal and intermittent nature of solar energy creates a significant mismatch with users' energy needs. For example, in many areas of my country, summer, with its high temperatures, strong sunlight, and long sunshine hours, makes solar power generation more efficient. However, indoor cooling is required during this time, and energy demand is primarily focused on cooling. In winter, with its low temperatures, weak sunlight, and short sunshine hours, solar power generation is less efficient, but indoor heating is required, and energy demand is primarily focused on heating. Furthermore, solar power generation systems typically operate only during daylight hours and cannot meet all-day energy demands. This supply-demand mismatch not only leads to energy waste but also increases dependence on traditional energy sources, limiting the effective use of solar energy. Summary of the Invention

[0004] In response to the defects of the existing technology, this application provides a cross-seasonal storage solar air-conditioning system, which aims to solve the problem that the seasonality and intermittency of solar power generation do not match user needs, resulting in energy waste and increased dependence on traditional energy, which limits the effective use of solar energy.

[0005] The present application provides a cross-seasonal storage solar air conditioning system, which specifically includes a solar heating device, a high-temperature energy storage device, a steam power generation device, a refrigeration device, an air conditioning device, and a PID control unit, wherein: The solar heating device includes a solar heating tank, a high-temperature energy storage heating pipe and a high-temperature energy storage return pipe. Liquid medium is provided inside the solar heating tank, and the solar heating tank is used to receive solar energy to heat the liquid medium. The high-temperature energy storage device includes a high-temperature energy storage tank disposed below the ground for storing a high-temperature liquid medium. The high-temperature energy storage tank is connected to the solar heating tank via a high-temperature energy storage heating pipe and a high-temperature energy storage return pipe to form a circulation system. The steam power generation device is connected to the solar heating tank and can generate high-temperature and high-pressure steam for generating electricity to power the system; The refrigeration device is used to produce and store frozen ice cubes to provide a cold source for the air conditioning device; The air conditioning device is connected to the high-temperature energy storage device and the refrigeration device to receive heat energy and cold source to achieve indoor temperature regulation; The PID control unit is respectively connected to the solar heating device, high-temperature energy storage device, steam power generation device, refrigeration device and air conditioning device to control the operation of each device.

[0006] The above technical solution conceived by the present application, compared with the existing technology, can effectively solve the problem of seasonal limitation of solar energy and improve energy utilization efficiency by using a solar heating device to efficiently collect solar energy and convert it into thermal energy, and using a high-temperature energy storage device to achieve cross-seasonal energy storage. At the same time, the system integrates power generation, heating, and cooling functions. The steam power generation device can power the system, and the refrigeration device can provide a cold source for the air-conditioning device to meet the temperature regulation needs of different seasons. In addition, the system mainly relies on solar energy to drive, which reduces dependence on traditional energy, reduces energy costs, reduces greenhouse gas emissions, has good energy-saving and environmental protection effects, can reduce operating costs, and improve the stability and practicality of the system, which is beneficial for achieving sustainable energy utilization and a comfortable indoor environment.

[0007] As a further preference, the solar heating tank is a transparent tank body, and convex lenses are fixedly installed on the top and four sides of the tank body.

[0008] As a further preferred embodiment, the solar heating device also includes a high-temperature energy storage heating valve, a high-temperature energy storage reflux pump and a first sensing unit. The high-temperature energy storage heating valve is arranged on the high-temperature energy storage heating pipe, and the high-temperature energy storage reflux pump is arranged on the high-temperature energy storage reflux pipe; the first sensing unit is arranged inside the solar heating tank.

[0009] As a further preferred embodiment, the high-temperature energy storage device further includes a hot water delivery pipe, a high-temperature heat source pipe, a heating return pipe and a second sensing unit; The hot water delivery pipe is arranged inside the high-temperature energy storage tank, the high-temperature heat source pipe is arranged at the top of the high-temperature energy storage tank, one end of which is connected to the hot water delivery pipe, and the other end is connected to the water inlet of the air-conditioning device; the heating return pipe is arranged at the bottom of the high-temperature energy storage tank, one end of which is connected to the hot water delivery pipe, and the other end is connected to the water outlet of the air-conditioning device for receiving return water from the air-conditioning device; the second sensing unit is arranged in the high-temperature energy storage tank.

[0010] As a further preferred embodiment, the steam power generation device is arranged adjacent to the solar heating device, and the steam power generation device includes a high-temperature steam tank, a generator, a high-temperature gas supply pipe, a high-temperature gas supply valve and a power supply line; The high-temperature steam tank is connected to the solar heating tank through a high-temperature gas supply pipe. The high-temperature gas supply valve is fixedly installed on the high-temperature gas supply pipe. The generator is connected to the high-temperature steam tank to receive steam for power generation. One end of the power supply line is connected to the output end of the generator, and the other end is connected to each device in the system to realize power transmission.

[0011] As a further preferred embodiment, the steam power generation device further includes a low-temperature reflux pipe and a low-temperature reflux valve, the low-temperature reflux pipe connects the high-temperature steam tank and the solar heating tank, and the low-temperature reflux valve is fixedly installed on the low-temperature reflux pipe.

[0012] As a further preference, the refrigeration device includes an ice-making energy storage chamber for making and storing frozen ice cubes, and the ice-making energy storage chamber is arranged underground and adopts a vacuum insulation structure.

[0013] As a further preferred embodiment, the refrigeration device further includes a cold source box, a cold water delivery pipe, a low-temperature cold source pipe, a refrigeration return pipe and a third sensor unit; The cold source box is arranged below the ice-making energy storage chamber, and a cold water delivery pipe is arranged inside the cold source box. The low-temperature cold source pipe is arranged at the top of the cold source box and one end is connected to the cold water delivery pipe, and the other end is connected to the water inlet of the air-conditioning device. The refrigeration return pipe is arranged at the bottom of the cold source box and one end is connected to the cold water delivery pipe, and the other end is connected to the water outlet of the air-conditioning device; the third sensor unit is arranged inside the cold source box.

[0014] As a further preferred embodiment, the air conditioning device includes an air conditioning water supply tee, an air conditioning water supply pipe, an air conditioning water supply pump, an air conditioning pipe, an air conditioning return pipe, an air conditioning water supply valve, an air conditioning return water tee and a fourth sensing unit; The air conditioning water supply tee is respectively connected with the high-temperature heat source pipe, the low-temperature cold source pipe and the air conditioning water supply pipe; the air conditioning water supply pipe is connected with the air conditioning pipe through the air conditioning water supply pump; the air conditioning return water pipe is connected with the air conditioning pipe to receive return water; the air conditioning water replenishment valve is arranged on the air conditioning return water pipe and connected to an external water source; the air conditioning return water tee is respectively connected with the air conditioning return water pipe, the heating return pipe and the cooling return pipe; the fourth sensing unit is arranged inside the air conditioning pipe.

[0015] As a further preference, the refrigeration devices are provided in one or more groups.

[0016] In general, the above technical solutions conceived by this application have the following technical advantages compared with the existing technologies: 1. This application's inter-seasonal solar air conditioning system efficiently collects solar energy through a solar heating device and converts it into thermal energy. It then utilizes a high-temperature energy storage device to achieve inter-seasonal energy storage, effectively addressing the seasonal limitations of solar energy. The liquid medium within the solar heating tank is heated by the focusing action of a convex lens. This heat is then circulated through the high-temperature energy storage heating pipe and return pipe, forming a circulation system with the high-temperature energy storage tank, ensuring efficient energy transfer and storage. This design not only improves energy utilization efficiency but also enables the system to utilize stored energy for heating or power generation during periods of low sunlight, enhancing the system's stability and practicality.

[0017] 2. This application's inter-seasonal storage solar air conditioning system integrates power generation, heating, and cooling functions, achieving comprehensive energy utilization. The steam generator utilizes high-temperature, high-pressure steam generated by solar heating to generate electricity, providing power for the system itself and other equipment, reducing reliance on the external power grid. The refrigeration unit produces and stores frozen ice, providing a cooling source for the air conditioning system, meeting temperature regulation requirements in different seasons. The entire system is primarily solar-powered, reducing consumption of traditional energy sources, lowering energy costs, and reducing greenhouse gas emissions. It offers excellent energy-saving and environmental benefits, meeting the requirements of sustainable development.

[0018] 3. In this application, multiple high-temperature energy storage tanks and ice storage chambers can be arranged according to the heating / cooling needs of the building. These tanks and ice storage chambers should be located within a certain depth below the ground level of the basement, without occupying any space outside the building. Furthermore, their placement within this depth minimizes the safety impact of these tanks and ice storage chambers on the surrounding area. Both tanks and ice storage chambers utilize a double-layer vacuum structure to ensure thermal insulation.

[0019] 4. This application adopts PID control, which is a feedback control algorithm widely used in industrial automation and process control. It can realize intelligent control of solar heating devices, high-temperature energy storage devices, steam power generation devices, refrigeration devices and air-conditioning devices. By adjusting the error between the control quantity and the controlled process, it can achieve precise regulation of the system output, covering temperature control, pressure regulation, flow control and other fields. The PID control system can provide automatic monitoring and control for the flow, flow rate, air conditioning heating, cooling, energy storage, and temperature regulation of the house air conditioner, ensuring system safety and improving system operation efficiency.

[0020] 5. In this application, the same solar heating device can store high-temperature energy for multiple high-temperature energy storage devices; the high-temperature and high-pressure gas source generated by the same solar heating device can provide power, make ice and store low-temperature energy for multiple refrigeration devices after generating electricity, thereby reducing the operating cost of house air conditioning and achieving significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the cross-seasonal storage solar air conditioning system provided by an embodiment of the present application; Figure 2 This is a schematic diagram of the overall structure of the solar heating tank provided in an embodiment of the present application; Figure 3 This is a schematic diagram of the air conditioning pipe layout structure provided in an embodiment of the present application; Figure 4 This is a schematic diagram of the temperature compensation process of the cross-seasonal energy storage system provided in an embodiment of the present application; Figure 5 This is a power characteristic diagram of the cross-seasonal energy storage system provided in an embodiment of the present application.

[0022] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1-Solar heating device; 1.1-Solar heating tank; 1.2-High-temperature energy storage heating valve; 1.3-High-temperature energy storage heating pipe; 1.4-High-temperature energy storage return pump; 1.5-High-temperature energy storage return pipe; 1.6-First sensing unit; 2-High-temperature energy storage device; 2.1-High-temperature energy storage tank; 2.2-Hot water delivery pipe; 2.3-High-temperature heat source pipe; 2.4-Heating return pipe; 2.5-Second sensing unit; 3-Steam power generation device; 3.1-High-temperature steam tank; 3.2-Generator; 3.3-High-temperature gas supply pipe; 3.4-High-temperature gas supply valve; 3.5-Low-temperature return pipe; 3.6-Low-temperature return valve; 3.7-Power supply line; 4 - Refrigeration device; 4.1 - Ice-making energy storage chamber; 4.2 - Cold source box; 4.3 - Cold water delivery pipe; 4.4 - Low-temperature cold source pipe; 4.5 - Refrigeration return pipe; 4.6 - Third sensor unit; 5 - Air conditioning unit; 5.1 - Air conditioning water supply tee; 5.2 - Air conditioning water supply pipe; 5.3 - Air conditioning water supply pump; 5.4 - Air conditioning pipe; 5.5 - Air conditioning return pipe; 5.6 - Air conditioning water supply valve; 5.7 - Air conditioning return tee; 5.8 - Fourth sensor unit; 6-PID control unit. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] Reference Figure 1This application discloses a seasonal solar air conditioning system with energy storage. This system uses solar energy to heat a liquid medium in the winter and spring seasons (October to May of each year) to generate high-temperature, high-pressure steam, which is then used to generate electricity and ice to store cold energy, providing a cold source for cooling homes in the summer. It also uses solar energy to heat a liquid medium in the summer and autumn seasons (May to October of each year) to store heat energy, providing a heat source for heating homes in the winter. The system comprises a solar heating device 1, a high-temperature energy storage device 2, a steam generator 3, a refrigeration device 4, an air conditioning device 5, and a PID (proportional-integral-differential) control system 6.

[0025] The solar heating device 1 is installed on the roof of the house, and is used to receive solar energy to heat the liquid medium. It is connected to the high-temperature energy storage device 2 through a pipeline. The high-temperature energy storage device 2 is arranged below the ground of the basement of the house, and is used to store the heated liquid medium to provide heat energy for the air-conditioning device 5 for cross-seasonal heating. The steam power generation device 3 is placed on the roof of the house, and is connected to the solar heating device 1 through a pipeline. It receives the high-temperature and high-pressure steam generated by the solar heating device 1 and generates electricity to provide power for the refrigeration device 4. The refrigeration device 4 is arranged below the ground of the basement of the house, and is provided with electricity by the steam power generation device 3 to make ice cubes to provide cross-seasonal cooling for the air-conditioning device 5. Cold source; the air-conditioning device 5 is installed in the wall of the house to adjust the indoor temperature. In winter, it receives the heat energy provided by the high-temperature energy storage device 2 to provide heat for indoor heating of the house; in summer, it receives the cold source provided by the refrigeration device 4 to cool the indoor temperature of the house; the PID control unit 6 is arranged indoors, and the PID control unit 6 is respectively connected to the solar heating device 1, the high-temperature energy storage device 2, the steam power generation device 3, the refrigeration device 4 and the air-conditioning device 5 to realize the control of the operation of each device, provide automatic monitoring and control for the whole process of heating, cooling, energy storage and temperature regulation of the solar air-conditioning system, and provide precise services for energy demand and utilization.

[0026] In this embodiment, the solar heating device 1 is used to efficiently utilize solar energy for thermal energy conversion and storage. Its core components include a solar heating tank 1.1, a high-temperature energy storage heating valve 1.2, a high-temperature energy storage heating pipe 1.3, a high-temperature energy storage return pump 1.4, a high-temperature energy storage return pipe 1.5 and a first sensor unit 1.6. The design of the solar heating device 1 fully considers the efficient collection of solar energy and the stable transmission of thermal energy, aiming to provide a continuous and stable supply of thermal energy.

[0027] Specifically, the solar heating tank 1.1 is a key part of the solar heating device 1. The interior of the solar heating tank 1.1 is filled with a liquid medium (such as molten salt). In actual use, it is fixedly installed on the roof of the house so that it can receive solar radiation to the maximum extent. It is a transparent tank body with large-diameter convex lenses fixedly installed on the top and all four sides. These convex lenses can focus sunlight to generate a high temperature of nearly 800°C, thereby directly heating the liquid medium in the tank. The molten salt can be heated to 200°C to 550°C. Molten salt has high specific heat capacity and high boiling point characteristics. As an efficient heat conduction medium, it can operate stably within the operating temperature range of 200°C to 550°C, ensuring the effective storage and transfer of thermal energy. The solar heating tank 1.1 receives solar radiation to heat the liquid medium, providing thermal energy for the high-temperature energy storage device 2 and providing a high-temperature and high-pressure gas source for the steam power generation device 3.

[0028] More specifically, in order to achieve efficient transmission and recycling of thermal energy, the solar heating tank 1.1 and the high-temperature energy storage tank 2.1 in the high-temperature energy storage device 2 are connected through the high-temperature energy storage heating pipe 1.3 and the high-temperature energy storage return pipe 1.5. The high-temperature energy storage heating valve 1.2 is installed on the high-temperature energy storage heating pipe 1.3, and the high-temperature energy storage return pump 1.4 is installed on the high-temperature energy storage return pipe 1.5 to ensure that the molten salt circulates smoothly in the system and improves the efficiency of thermal energy utilization. In addition, the first sensing unit 1.6 specifically uses a molten salt heating temperature and pressure sensor, which is fixedly installed in the internal center of the solar heating tank 1.1 for real-time monitoring of the temperature and pressure in the solar heating tank 1.1 to ensure that the air-conditioning system operates efficiently under safe conditions. Through the above design, the solar heating device 1 can not only make full use of solar energy, a renewable energy source, but also achieve stable storage and supply of thermal energy by cooperating with the high-temperature energy storage device 2, and is suitable for a variety of industrial and civil scenarios.

[0029] In this embodiment, the high-temperature energy storage device 2 is used to achieve efficient and stable thermal energy storage and supply. It plays a key role between the solar heating device 1 and the house heating system. The device includes a high-temperature energy storage tank 2.1, a hot water delivery pipe 2.2, a high-temperature heat source pipe 2.3, a heating return pipe 2.4 and a second sensor unit 2.5.

[0030] Specifically, high-temperature energy storage tank 2.1 is the core component of the entire system. Its primary function is to store a liquid medium, such as molten salt, heated by solar heating device 1. After being heated to a high temperature in solar heating device 1, this liquid medium is transferred to high-temperature energy storage tank 2.1 via high-temperature energy storage heating pipe 1.3 for storage, providing a stable heat source for subsequent heating needs. In actual use, high-temperature energy storage tank 2.1 is installed at a certain depth below the basement floor of the house and utilizes a vacuum insulation structure. This design effectively reduces heat loss and ensures that the stored heat energy is maintained at a high temperature for a long time.

[0031] More specifically, a hot water delivery pipe 2.2 is located within high-temperature energy storage tank 2.1. A high-temperature heat source pipe 2.3 is located at the top of high-temperature energy storage tank 2.1, one end of which is connected to hot water delivery pipe 2.2 and the other end is connected to the water inlet of air conditioning unit 5, providing heat for air conditioning unit 5. In winter, air conditioning unit 5 requires a large amount of heat energy to maintain indoor temperature. High-temperature heat source pipe 2.3 effectively transfers heat energy from high-temperature energy storage tank 2.1 to air conditioning unit 5, ensuring efficient operation of the air conditioning system. A heating return pipe 2.4 is located at the bottom of high-temperature energy storage tank 2.1, one end of which is connected to hot water delivery pipe 2.2 and the other end is connected to the water outlet of air conditioning unit 5. This return water, after being used by air conditioning unit 5, has a lower temperature but still contains a certain amount of heat. This return water is returned to high-temperature energy storage tank 2.1 through heating return pipe 2.4 for further heating, thus recycling heat energy and improving the energy efficiency of the entire system. In addition, a second sensing unit 2.5 is installed in the high-temperature energy storage tank 2.1. This second sensing unit 2.5 is specifically a high-temperature energy storage tank temperature and pressure sensor, which is used to monitor the temperature and pressure inside the high-temperature energy storage tank 2.1 in real time. This sensor can ensure that the high-temperature energy storage tank 2.1 operates under safe and efficient conditions, and also provides the necessary data support for the system's automated control.

[0032] Furthermore, based on the actual heating needs of the house, the high-temperature energy storage tanks 2.1 can be flexibly arranged in multiple groups to meet the heating requirements of houses of different sizes. This design not only improves the flexibility and adaptability of the system, but also ensures that houses can obtain a stable and reliable supply of heat energy in different seasons and climatic conditions.

[0033] In this embodiment, a steam generator 3 converts thermal energy into electrical energy. It works in conjunction with the solar heating device 1, fully utilizing solar energy to generate high-temperature steam for power generation, providing clean energy for the house. The steam generator 3 is mounted on the roof of the house, adjacent to the solar heating device 1. It is connected to the solar heating tank 1.1 and generates high-temperature, high-pressure steam for powering the system. This arrangement not only facilitates pipe connections but also minimizes steam transport distances, reducing energy losses. The device comprises a high-temperature steam tank 3.1, a generator 3.2, a high-temperature gas supply pipe 3.3, a high-temperature gas supply valve 3.4, a low-temperature return pipe 3.5, a low-temperature return valve 3.6, and a power supply line 3.7.

[0034] Specifically, the high-temperature steam tank 3.1 is the core component of the device. It is connected to the solar heating tank 1.1 through the high-temperature air supply pipe 3.3 and the low-temperature return pipe 3.5. The steam in the solar heating tank 1.1 enters the high-temperature steam tank 3.1 through the high-temperature air supply pipe 3.3. The high-temperature air supply valve 3.4 is fixedly installed on the high-temperature air supply pipe 3.3 and is used to control the flow and pressure of the steam to ensure that the steam can be stably transmitted from the solar heating tank 1.1 to the high-temperature steam tank 3.1. The generator 3.2 is connected to the high-temperature steam tank 3.1. The high-temperature steam inside the high-temperature steam tank 3.1 is used to drive the generator 3.2, thereby converting thermal energy into electrical energy. The principle of the generator 3.2 is to use high-temperature and high-pressure steam to enter the steam turbine, drive the turbine to rotate, and thus drive the generator to generate electricity. The steam turbine is a common thermal power generation device that converts steam energy into mechanical energy and then converts it into electrical energy output. It is a prior art and will not be introduced in detail here. One end of the power supply line 3.7 is connected to the output terminal of the generator 3.2, and the other end is connected to each device in the system and other equipment in the house. The generated electricity is transmitted to the house's power system through the power supply line 3.7, providing a stable power supply for the house. This process not only improves energy utilization efficiency, but also reduces dependence on traditional fossil fuels and reduces carbon emissions.

[0035] Furthermore, during the steam power generation process, after the steam drives generator 3.2 to generate electricity, its temperature and pressure decrease, forming low-temperature steam. This low-temperature steam then returns to solar heating tank 1.1 via low-temperature return pipe 3.5 for reheating. A low-temperature return valve 3.6, fixedly mounted on low-temperature return pipe 3.5, controls the flow and pressure of the returning steam, ensuring the safety and stability of system operation. The steam power generation device 3 and solar heating device 1 form a highly efficient energy circulation system. Solar heating device 1 utilizes solar energy to heat a liquid medium (such as molten salt) to a high temperature. The resulting high-temperature steam is transported to steam power generation device 3 via high-temperature gas supply pipe 3.3, driving generator 3.2 to generate electricity. The generated low-temperature steam then returns to solar heating device 1 via low-temperature return pipe 3.5 for reheating, thereby achieving energy recycling and improving the energy efficiency of the entire system.

[0036] The compact layout and efficient energy conversion mechanism of the steam power generation device 3 enable it to provide a stable power supply for the house, while reducing dependence on traditional power grids and improving energy self-sufficiency. This clean energy solution is not only suitable for residential use, but can also be widely used in commercial and industrial fields, providing strong support for achieving sustainable development goals.

[0037] In this embodiment, the refrigeration device 4 is used for efficient refrigeration and cold energy storage and is arranged in one or more groups, which is mainly used to meet the cooling needs in summer. The device includes an ice-making storage chamber 4.1, a cold source box 4.2, a cold water delivery pipe 4.3, a low-temperature cold source pipe 4.4, a refrigeration return pipe 4.5 and a third sensor unit 4.6.

[0038] Specifically, the main function of the ice storage chamber 4.1 is to produce and store frozen ice cubes, which can be used to provide a cold source in the summer. The ice storage chamber 4.1 is set within a certain depth below the ground of the basement of the house and adopts a vacuum insulation structure. This structure can effectively reduce the loss of cold energy and ensure that the stored ice cubes can remain at a low temperature for a long time.

[0039] More specifically, the cold source box 4.2 is one of the core components of the refrigeration device 4, which is arranged below the ice-making energy storage chamber 4.1. This layout is conducive to the transportation of ice cubes and the transfer of cold energy. A cold water delivery pipe 4.3 is arranged inside the cold source box 4.2. A low-temperature cold source pipe 4.4 is arranged at the top of the cold source box 4.2 and is connected to the cold water delivery pipe 4.3 at one end, and is connected to the air-conditioning device 5 at the other end to provide a cold source for the air-conditioning device 5; in summer, the air-conditioning device 5 requires a large amount of cold energy to maintain the indoor temperature. The low-temperature cold source pipe 4.4 is connected to the water inlet of the air-conditioning device 5 so that the cold energy in the cold source box 4.2 can be effectively transferred to the air-conditioning device 5, ensuring that the air-conditioning system can operate efficiently. A cooling return pipe 4.5 is located at the bottom of the cold source tank 4.2, one end of which is connected to the cold water delivery pipe 4.3 and the other end of which is connected to the water outlet of the air conditioning unit 5. This returns the water after the air conditioning unit 5 cools it down. After being used by the air conditioning unit 5, the temperature of this return water rises, but it still contains a certain amount of cold energy. This return water is then returned to the cold source tank 4.2 through the cooling return pipe 4.5 for further cooling, thereby recycling the cold energy and improving the energy efficiency of the entire system. The third sensing unit 4.6 is specifically a cold source tank temperature sensor. The cold source tank temperature sensor is fixedly mounted in the center of the cold source tank 4.2 and is used to monitor the temperature inside the cold source tank 4.2 in real time. This sensor ensures that the cold source tank 4.2 operates safely and efficiently, while also providing necessary data support for the system's automated control.

[0040] The design of refrigeration unit 4 takes into account the diverse and flexible cooling needs of homes. Based on the actual cooling needs of a home, refrigeration units 4 can be flexibly arranged in multiple groups to meet the cooling requirements of homes of varying sizes. This design not only improves the system's adaptability but also ensures a stable and reliable supply of cooling energy for homes in all seasons and climates. Through an efficient cooling energy generation and storage system, combined with water circulation technology, a stable cooling energy supply is provided to homes. Its vacuum insulation structure and flexible multi-group arrangement ensure efficient cooling energy utilization and stable system operation.

[0041] In this embodiment, an air conditioning unit 5 is used to distribute heat and cold sources. It maintains a comfortable temperature year-round in a house through a network of pipes and intelligent control devices. The unit includes an air conditioning water supply tee 5.1, an air conditioning water supply pipe 5.2, an air conditioning water supply pump 5.3, an air conditioning pipe 5.4, an air conditioning return pipe 5.5, an air conditioning water supply valve 5.6, an air conditioning return tee 5.7, and a fourth sensor unit 5.8.

[0042] Specifically, the air conditioning water supply tee 5.1 is the core connection component of the air conditioning unit 5. It connects to the high-temperature heat source pipe 2.3, the low-temperature cooling source pipe 4.4, and the air conditioning water supply pipe 5.2. This allows the air conditioning unit 5 to receive hot or cold water, flexibly switching between heat and cooling sources according to the season and demand. In winter, the high-temperature heat source pipe 2.3 transfers heat energy from the high-temperature energy storage tank 2.1 to the air conditioning water supply pipe 5.2. In summer, the low-temperature cooling source pipe 4.4 transfers cooling energy from the cold source tank 4.2 to the air conditioning water supply pipe 5.2. The air conditioning water supply pipe 5.2 is the primary channel for heat and cold water transmission. It connects to the air conditioning pipe 5.4 via the air conditioning water supply pump 5.3. This pump is responsible for delivering hot or cold water from the water supply pipe 5.2 to the air conditioning pipe 5.4, providing a stable water source for the pipe 5.4 and ensuring efficient distribution of heat and cold to all areas of the house. By precisely controlling the pump's flow rate and pressure, the pump ensures smooth flow of heat and cold throughout the system, improving overall system efficiency. The air conditioning pipe 5.4 is the terminal device for heat and cold water distribution. Located within the house's cavity, it delivers hot or cold water to each room, maintaining a comfortable indoor temperature through radiators or air conditioning terminal units. The design of the air conditioning pipe 5.4 allows for even distribution and efficient delivery of heat and cold, ensuring stable temperature control in every room. The air conditioning return water pipe 5.5 is connected to the air conditioning pipe 5.4 to receive the return water from the air conditioning pipe 5.4. The return water has a different temperature after use, but still contains a certain amount of heat or cold energy. Through the air conditioning return water pipe 5.5, this return water is sent back to the system for reheating or cooling, realizing the recycling of heat and cold sources and improving energy utilization efficiency.

[0043] Furthermore, during system operation, the amount of water in the system may decrease due to evaporation and leakage. Air conditioning water supply valve 5.6 is fixedly installed on the air conditioning return pipe 5.5 and connected to an external water source. By connecting air conditioning water supply valve 5.6 to the indoor tap water pipe, the air conditioning return pipe 5.5 is pressurized and replenished. Air conditioning water supply valve 5.6 can automatically detect and replenish the required water volume, ensuring the system is always in optimal operating condition. Air conditioning return water tee 5.7 is a key connecting component of the air conditioning system. It connects to the air conditioning return pipe 5.5, the heating return pipe 2.4, and the cooling return pipe 4.5, respectively. This allows the air conditioning system to flexibly distribute return water to different return pipes, ensuring efficient recycling of heat and cooling resources. A fourth sensing unit 5.8 is fixedly installed inside the air conditioning pipe 5.4 and is used to monitor the temperature inside the pipe in real time. Specifically, fourth sensing unit 5.8 is an air conditioning pipe temperature sensor. This sensor provides accurate data support for the system's automated control, ensuring safe and efficient operation of the air conditioning system. Through the intelligent control system, the air conditioning pipe temperature sensor can automatically adjust the flow and pressure of the air conditioning water supply pump 5.3 according to the indoor temperature requirements to achieve precise temperature control.

[0044] In this embodiment, the PID control unit 6 performs automated control based on hydraulic, pneumatic, and electric motions. It ensures efficient and stable operation of the entire air-conditioning system through precise feedback and regulation mechanisms. It is connected to the high-temperature energy storage heating valve 1.2, the high-temperature energy storage return pump 1.4, the first sensor unit 1.6, the second sensor unit 2.5, the high-temperature air supply valve 3.4, the low-temperature return valve 3.6, the third sensor unit 4.6, the air-conditioning water supply tee 5.1, the air-conditioning water supply pump 5.3, the air-conditioning water supply valve 5.6, the air-conditioning return water tee 5.7, and the fourth sensor unit 5.8.

[0045] Specifically, the solar heating cross-seasonal energy storage process is as follows: Set the pressure and temperature parameters of the molten salt heating temperature and pressure sensor respectively, and set the pressure and temperature parameters of the high-temperature energy storage tank temperature and pressure sensor respectively.

[0046] From October to May of the following year, the high-temperature energy storage reflux pump 1.4 is turned on to inject the liquid medium (molten salt) from the high-temperature energy storage tank 2.1 into the solar heating tank 1.1 until the liquid level is about 3 / 4, and then the high-temperature energy storage reflux pump 1.4 is turned off; the solar energy heats the solar heating tank 1.1, and the liquid medium (molten salt) rises in temperature. When the molten salt heating temperature and pressure sensor reaches the set value, the high-temperature energy storage heating valve 1.2 and the high-temperature energy storage reflux pump 1.4 are opened, and the high-temperature liquid medium (molten salt) heated to the set temperature is transported to the interior of the high-temperature energy storage tank 2.1 through the high-temperature energy storage heating pipe 1.3. The high-temperature energy storage reflux pipe 1.5 transports the liquid medium (molten salt) at the bottom of the high-temperature energy storage tank 2.1 to the interior of the solar heating tank 1.1. The above steps are repeated until the liquid medium (molten salt) inside the high-temperature energy storage tank 2.1 is heated to the temperature and pressure set by the temperature and pressure sensor of the high-temperature energy storage tank. The high-temperature energy storage heating valve 1.2 and the high-temperature energy storage reflux pump 1.4 are closed to complete the high-temperature energy storage process of one group of high-temperature energy storage tanks 2.1. If necessary, the above steps are repeated to complete the high-temperature energy storage process of another group of high-temperature energy storage tanks 2.1.

[0047] From May to October each year, solar energy heats solar heating tank 1.1, raising the temperature of the liquid medium (molten salt). When the molten salt heating temperature and pressure sensor reaches the set value, high-temperature gas supply valve 3.4 opens, and the hot gas in solar heating tank 1.1 flows through high-temperature gas supply pipe 3.3 into high-temperature steam tank 3.1, driving generator 3.2 to generate electricity. The low-temperature return valve opens, and the hot gas in high-temperature steam tank 3.1 cools down after generating electricity, flows through low-temperature return pipe 3.5 and returns to solar heating tank 1.1. This process repeats to continuously generate electricity. Power from generator 3.2 is supplied to ice-making energy storage chamber 4.1 via power supply line 3.7. Ice-making energy storage chamber 4.1 then makes and stores ice, completing the low-temperature energy storage process for one group of ice-making energy storage chambers 4.1. If necessary, the above steps are repeated to complete the low-temperature energy storage process for another group of ice-making energy storage chambers 4.1.

[0048] Furthermore, the operation process of the air conditioning device 5 is as follows: Set the temperature parameters of the high-temperature energy storage tank temperature and pressure sensor, the temperature parameters of the cold source box temperature sensor, and the temperature parameters of the air conditioning pipe temperature sensor respectively.

[0049] From May to October each year, open the air conditioning water supply valve 5.6 to fill the air conditioning pipe 5.4 and the cold water delivery pipe 4.3 with tap water, then close the air conditioning water supply valve 5.6. Open the air conditioning water supply tee 5.1 to the refrigeration circulation channel mode to connect the low-temperature cold source pipe 4.4 with the air conditioning water supply pipe 5.2. Open the air conditioning water return tee 5.7 to the refrigeration circulation channel mode to connect the air conditioning water return pipe 5.5 with the refrigeration return pipe 4.5. Place ice cubes from the ice-making energy storage chamber 4.1 into the cold source tank 4.2, and form an ice-water mixture in a certain proportion based on the temperature parameters of the cold source tank temperature sensor. Turn on the air conditioning water supply pump 5.3, and the tap water in the cold water delivery pipe 4.3 exchanges water with the ice-water mixture in the cold source tank 4.2 during its flow. The cooled tap water in cold water delivery pipe 4.3 flows sequentially through low-temperature cooling source pipe 4.4, air conditioning water supply tee 5.1, air conditioning water supply pipe 5.2, air conditioning water supply pump 5.3, air conditioning pipe 5.4, air conditioning return pipe 5.5, air conditioning return tee 5.7, cooling return pipe 4.5, and cold water delivery pipe 4.3, forming a refrigeration cycle that cools the room. Based on the temperature setting parameters of the air conditioning pipe temperature sensor, PID control system 6 controls the opening of air conditioning water supply tee 5.1 and the flow rate of air conditioning water supply pump 5.3, completing the summer cooling process.

[0050] From October to May of each year, turn the air conditioner water supply tee 5.1 to heating circulation mode, connecting high-temperature heat source pipe 2.3 with air conditioner water supply pipe 5.2. Turn the air conditioner water return tee 5.7 to heating circulation mode, connecting air conditioner water return pipe 5.5 with heating return pipe 2.4. Turn on the air conditioner water supply pump 5.3, and the tap water in hot water delivery pipe 2.2 exchanges heat with the high-temperature liquid medium (molten salt) in high-temperature energy storage tank 2.1. The heated tap water in hot water delivery pipe 2.2 then flows through high-temperature heat source pipe 2.3, air conditioner water supply tee 5.1, air conditioner water supply pipe 5.2, air conditioner water supply pump 5.3, air conditioner pipe 5.4, air conditioner water return pipe 5.5, air conditioner water return tee 5.7, heating return pipe 2.4, and high-temperature heat source pipe 2.3, forming a heating cycle that heats the interior of the house. According to the temperature setting parameters of the air conditioning pipe temperature sensor, the PID control system 6 controls the opening size of the air conditioning water supply tee 5.1 and the flow rate of the air conditioning water supply pump 5.3 to complete the house heating process in winter.

[0051] like Figure 4 and Figure 5As shown, based on temperature data and monthly average daylight hours from January 2023 to April 2025 in a certain city provided by the Weather Spark website, to achieve a comfortable human body temperature (18°C ≈ 64.4°F), the proposed inter-seasonal solar energy storage air conditioning system uses solar energy to heat a high-specific heat capacity liquid medium in winter and spring (October to May of each year) to generate high-temperature, high-pressure steam to generate electricity and ice. This is then adiabatically stored at low temperatures (-30°C) to provide a cold source for cooling homes in the summer. In summer and autumn (May to October each year), solar energy heats a high-specific heat capacity liquid medium for high-temperature adiabatically stored energy to provide a heat source for heating homes in the winter. As the figure shows, the proposed inter-seasonal solar energy storage air conditioning system effectively addresses the seasonal and intermittent constraints on solar energy utilization, enabling inter-seasonal extraction and storage. This improves energy efficiency, reduces traditional energy consumption, lowers energy costs, and reduces greenhouse gas emissions. This system offers excellent energy-saving and environmental benefits, meeting the requirements of sustainable development.

[0052] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0053] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0055] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0056] It is easy for those skilled in the art to understand that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A cross-seasonal storage solar air conditioning system, characterized in that: The invention comprises a solar heating device (1), a high-temperature energy storage device (2), a steam power generation device (3), a refrigeration device (4), an air conditioning device (5) and a PID control unit (6), wherein: The solar heating device (1) comprises a solar heating tank (1.1), a high-temperature energy storage heating pipe (1.3) and a high-temperature energy storage return pipe (1.5); a liquid medium is provided inside the solar heating tank (1.1); the solar heating tank (1.1) is used to receive solar energy to heat the liquid medium; The high-temperature energy storage device (2) comprises a high-temperature energy storage tank (2.1) disposed below the ground for storing a high-temperature liquid medium, wherein the high-temperature energy storage tank (2.1) is connected to the solar heating tank (1.1) via a high-temperature energy storage heating pipe (1.3) and a high-temperature energy storage return pipe (1.5) to form a circulation system; The steam power generation device (3) is connected to the solar heating tank (1.1) and is capable of generating high-temperature and high-pressure steam for generating electricity to power the system; The refrigeration device (4) is used to produce and store frozen ice cubes to provide a cold source for the air conditioning device (5); The air conditioning device (5) is connected to the high-temperature energy storage device (2) and the refrigeration device (4) to receive heat energy and cold source to achieve indoor temperature regulation; The PID control unit (6) is respectively connected to the solar heating device (1), the high-temperature energy storage device (2), the steam power generation device (3), the refrigeration device (4) and the air conditioning device (5) to control the operation of each device.

2. The cross-seasonal storage solar air conditioning system according to claim 1, characterized in that: The solar heating tank (1.1) is a transparent tank body, and convex lenses are fixedly installed on the top and surrounding areas of the tank body.

3. The cross-seasonal storage solar air conditioning system according to claim 1, characterized in that: The solar heating device (1) further comprises a high-temperature energy storage heating valve (1.2), a high-temperature energy storage return pump (1.4) and a first sensing unit (1.6); the high-temperature energy storage heating valve (1.2) is arranged on the high-temperature energy storage heating pipe (1.3); the high-temperature energy storage return pump (1.4) is arranged on the high-temperature energy storage return pipe (1.5); and the first sensing unit (1.6) is arranged inside the solar heating tank (1.1).

4. The cross-seasonal storage solar air conditioning system according to claim 1, characterized in that: The high-temperature energy storage device (2) further comprises a hot water delivery pipe (2.2), a high-temperature heat source pipe (2.3), a heating return pipe (2.4) and a second sensing unit (2.5); The hot water delivery pipe (2.2) is arranged inside the high-temperature energy storage tank (2.1); the high-temperature heat source pipe (2.3) is arranged at the top of the high-temperature energy storage tank (2.1) and is connected to the hot water delivery pipe (2.2) at one end and to the water inlet of the air-conditioning device (5) at the other end; the heating return pipe (2.4) is arranged at the bottom of the high-temperature energy storage tank (2.1) and is connected to the hot water delivery pipe (2.2) at one end and to the water outlet of the air-conditioning device (5) at the other end for receiving return water from the air-conditioning device (5); and the second sensing unit (2.5) is arranged in the high-temperature energy storage tank (2.1).

5. The cross-seasonal storage solar air conditioning system according to claim 1, characterized in that: The steam power generation device (3) is arranged adjacent to the solar heating device (1), and the steam power generation device (3) comprises a high-temperature steam tank (3.1), a generator (3.2), a high-temperature gas supply pipe (3.3), a high-temperature gas supply valve (3.4), and a power supply line (3.7); The high-temperature steam tank (3.1) is connected to the solar heating tank (1.1) via a high-temperature gas supply pipe (3.3); the high-temperature gas supply valve (3.4) is fixedly mounted on the high-temperature gas supply pipe (3.3); the generator (3.2) is connected to the high-temperature steam tank (3.1) to receive steam for power generation; one end of the power supply line (3.7) is connected to the output end of the generator (3.2), and the other end is connected to each device in the system to achieve power transmission.

6. The cross-seasonal storage solar air conditioning system according to claim 5, characterized in that: The steam power generation device (3) further comprises a low-temperature return pipe (3.5) and a low-temperature return valve (3.6); the low-temperature return pipe (3.5) is connected to the high-temperature steam tank (3.1) and the solar heating tank (1.1); and the low-temperature return valve (3.6) is fixedly mounted on the low-temperature return pipe (3.5).

7. The cross-seasonal storage solar air conditioning system according to claim 4, characterized in that: The refrigeration device (4) comprises an ice-making energy storage chamber (4.1) for making and storing frozen ice cubes; the ice-making energy storage chamber (4.1) is arranged underground and adopts a vacuum heat-insulating structure.

8. The cross-seasonal storage solar air conditioning system according to claim 7, characterized in that: The refrigeration device (4) further comprises a cold source box (4.2), a cold water delivery pipe (4.3), a low-temperature cold source pipe (4.4), a refrigeration return pipe (4.5), and a third sensor unit (4.6); The cold source box (4.2) is arranged below the ice-making energy storage chamber (4.1); a cold water delivery pipe (4.3) is arranged inside the cold source box (4.2); the low-temperature cold source pipe (4.4) is arranged at the top of the cold source box (4.2) and is connected to the cold water delivery pipe (4.3) at one end and to the water inlet of the air-conditioning device (5) at the other end; the refrigeration return pipe (4.5) is arranged at the bottom of the cold source box (4.2) and is connected to the cold water delivery pipe (4.3) at one end and to the water outlet of the air-conditioning device (5) at the other end; and the third sensor unit (4.6) is arranged inside the cold source box (4.2).

9. The cross-seasonal storage solar air conditioning system according to claim 8, characterized in that: The air conditioning device (5) comprises an air conditioning water supply tee (5.1), an air conditioning water supply pipe (5.2), an air conditioning water supply pump (5.3), an air conditioning pipe (5.4), an air conditioning return pipe (5.5), an air conditioning water supply valve (5.6), an air conditioning return water tee (5.7), and a fourth sensing unit (5.8); The air conditioning water supply tee (5.1) is respectively connected to the high-temperature heat source pipe (2.3), the low-temperature cold source pipe (4.4) and the air conditioning water supply pipe (5.2); the air conditioning water supply pipe (5.2) is connected to the air conditioning pipe (5.4) via the air conditioning water supply pump (5.3); the air conditioning return water pipe (5.5) is connected to the air conditioning pipe (5.4) to receive return water; the air conditioning water supply valve (5.6) is arranged on the air conditioning return water pipe (5.5) and connected to an external water source; the air conditioning return water tee (5.7) is respectively connected to the air conditioning return water pipe (5.5), the heating return pipe (2.4) and the cooling return pipe (4.5); and the fourth sensor unit (5.8) is arranged inside the air conditioning pipe (5.4).

10. The cross-season storage solar air conditioning system according to claim 1, characterized in that: The refrigeration devices (4) are arranged in one or more groups.

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