Double-storage and double-supply system based on surface temperature and solar energy

Abstract

The invention provides a double-storage and double-supply system based on surface temperature and solar energy, and belongs to the technical field of energy storage and supply. According to the double-storage and double-supply system based on the earth surface temperature and the solar energy, an input port of a soil heat accumulator is connected with an output port of an earth surface sand temperature collector and an output port pipeline of a solar energy storage tank; and an output port of the soil heat accumulator is respectively connected with an input port of the earth surface sand temperature collector and an input port pipeline of the solar energy storage tank. An output port of the solar heat collection field is connected with an input port pipeline of the solar energy storage tank, and an input port of the solar heat collection field is connected with an output port pipeline of the solar energy storage tank. An output port of the solar energy storage tank is used for being connected with an input port pipeline of the heating and cooling tail end, and an input port of the solar energy storage tank is used for being connected with an output port pipeline of the heating and cooling tail end. The problems that in the heating and cooling technology, application of solar energy is easily limited by sites and weather, and the investment cost is high can be solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of energy storage and supply, and in particular to a dual storage and dual supply system based on ground surface temperature and solar energy. Background Art

[0002] With the development of industry and urbanization, heating and cooling have become an indispensable part of people's production and life. In terms of cooling, air conditioning systems are often used for regional cooling and refrigeration. Since air conditioning uses electricity and refrigerants to work, this will cause a large amount of electricity consumption, and the use of refrigerants will pollute the environment; in terms of heating, centralized heating is mostly used, and the heat source comes from high-energy-consuming equipment such as gas boilers, coal-fired boilers and electric boilers; in recent years, various places have actively taken measures to reduce the consumption of coal, oil and other energy sources as much as possible; currently, solar energy is gradually being developed and utilized as a green energy, but there are problems such as solar energy being restricted by site and weather, and high investment costs. Summary of the invention

[0003] The disclosed embodiment provides a dual storage and dual supply system based on ground surface temperature and solar energy to solve the problem that the application of solar energy in heating and cooling technology is easily restricted by site and weather and has high investment costs.

[0004] The embodiment of the present disclosure provides a dual storage and dual supply system based on ground surface temperature and solar energy, including: Solar energy storage tanks, surface sand temperature collectors, soil thermal storage bodies and solar thermal collection fields.

[0005] The input port of the soil heat storage body is respectively connected to the output port of the surface sand temperature collector and the output port pipeline of the solar energy storage tank, and the output port of the soil heat storage body is respectively connected to the input port of the surface sand temperature collector and the input port pipeline of the solar energy storage tank.

[0006] The output port of the solar energy collecting field is connected to the input port pipeline of the solar energy storage tank, and the input port of the solar energy collecting field is connected to the output port pipeline of the solar energy storage tank.

[0007] The output port of the solar energy storage tank is used to connect with the input port pipeline of the heating and cooling terminal, and the input port of the solar energy storage tank is used to connect with the output port pipeline of the heating and cooling terminal.

[0008] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: an energy storage buffer tank and an energy release buffer tank.

[0009] The output port of the energy storage buffer tank is respectively connected to the input port of the surface sand temperature collector, the input port of the soil heat storage body and the input port pipeline of the energy release buffer tank, and the input port of the energy storage buffer tank is respectively connected to the output port of the surface sand temperature collector, the output port of the soil heat storage body and the output port pipeline of the energy release buffer tank.

[0010] The output port of the energy release buffer tank is used to connect with the input port pipeline of the heating and cooling terminal, and the input port of the energy release buffer tank is used to connect with the output port pipeline of the heating and cooling terminal.

[0011] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a medium circulation pump, an energy storage circulation pump, an energy release circulation pump, a solar energy circulation pump and a heating and cooling circulation pump.

[0012] A medium circulation pump is arranged on the pipeline between the input port of the surface sand temperature collector and the output port of the energy storage buffer tank.

[0013] An energy storage circulation pump is arranged on the pipeline between the output port of the energy storage buffer tank and the input port of the soil heat storage body.

[0014] An energy release circulation pump is arranged on the pipeline between the input port of the soil heat storage body and the output port of the energy release buffer tank.

[0015] A solar circulation pump is arranged on the pipeline between the input port of the solar thermal collection field and the output port of the solar energy storage tank.

[0016] A heating and cooling circulation pump is arranged on the pipeline between the output port of the solar energy storage tank and the entrance of the heating and cooling area.

[0017] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a water source heat pump unit.

[0018] The first side output port of the water source heat pump unit is connected to the input port pipeline of the solar energy storage tank, and the first side input port of the water source heat pump unit is connected to the output port pipeline of the solar energy storage tank.

[0019] The second side output port of the water source heat pump unit is connected to the input port pipeline of the energy release buffer tank, and the second side input port of the water source heat pump unit is connected to the output port pipeline of the energy release buffer tank.

[0020] The water source heat pump unit is used for dual supply of cooling and heating.

[0021] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a first side circulation pump of a water source heat pump and a second side circulation pump of a water source heat pump.

[0022] A water source heat pump second side circulation pump is arranged on the pipeline between the second side input port of the water source heat pump unit and the output port of the energy release buffer tank.

[0023] A first-side circulating pump of the water source heat pump is arranged on the pipeline between the first-side input port of the water source heat pump unit and the output port of the solar energy storage tank.

[0024] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a control module, a meteorological monitoring module and a soil monitoring module.

[0025] The control module is connected with the meteorological monitoring module and the soil monitoring module respectively.

[0026] The meteorological monitoring module is configured to collect meteorological data, and the soil monitoring module is configured to collect soil information.

[0027] The control module is configured to control the working status of the water source heat pump unit, the medium circulation pump, the energy storage circulation pump, the energy release circulation pump, the solar circulation pump, the heating and cooling circulation pump, the water source heat pump second side circulation pump and the water source heat pump first side circulation pump according to meteorological data and soil information.

[0028] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a control valve module and an energy demand monitoring module.

[0029] The control module is connected with the energy demand monitoring module and the control valve module respectively.

[0030] The energy demand monitoring module is arranged at the heating and cooling terminal and is configured to monitor the energy demand data of the heating and cooling terminal. The control valve module is arranged on a plurality of pipelines.

[0031] The control module is also configured to control the opening degree of the control valve module according to the energy demand data of the heating and cooling terminals.

[0032] In an exemplary embodiment of the present disclosure, the weather monitoring module includes: Temperature and humidity sensors, rain sensors, and light intensity sensors.

[0033] The temperature and humidity sensor, the rain sensor and the light intensity sensor are all connected to the control module.

[0034] In an exemplary embodiment of the present disclosure, the soil monitoring module includes: Soil temperature sensor and soil moisture sensor.

[0035] The soil temperature sensor and the soil moisture sensor are both connected to the control module.

[0036] In an exemplary embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a soil cold storage body.

[0037] The input port of the soil cold storage body is respectively connected to the output port of the energy storage buffer tank and the output port pipeline of the energy release buffer tank, and the output port of the soil cold storage body is respectively connected to the input port of the energy storage buffer tank and the input port pipeline of the energy release buffer tank.

[0038] The beneficial effects of the dual storage and dual supply system based on ground surface temperature and solar energy provided by the embodiments of the present disclosure are: On the one hand, the embodiments of the present disclosure make full use of the surface sand temperature and solar energy, reduce dependence on traditional high-energy-consuming equipment such as gas boilers, coal-fired boilers and electric boilers, reduce electricity consumption, and meet the requirements of sustainable development.

[0039] On the other hand, the disclosed embodiments solve the problem of solar energy being restricted by weather. By combining the surface sand temperature collector with the solar thermal field, and the hot and cold dual energy storage design of the soil heat storage body and the soil cold storage body, heat can be fully stored in the summer and cold can be fully stored in the winter, and heating in the winter and cooling in the summer can be used to achieve continuity of heating and cooling. The construction and operation costs of solar energy are reduced, and there is no need for large-scale infrastructure investment, which greatly saves site costs and also reduces the operating costs of auxiliary energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 is a structural schematic diagram of a dual storage and dual supply system based on ground surface temperature and solar energy provided by an embodiment of the present disclosure; Figure 2 It is a schematic diagram of the structure of a control system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0043] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0044] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings: Figure 1 This is a schematic diagram of a dual storage and dual supply system based on ground surface temperature and solar energy provided by an embodiment of the present disclosure. Figure 1 The dual storage and dual supply system based on ground surface temperature and solar energy includes: a solar energy storage tank 3, a ground surface sand temperature collector 4, a soil heat storage body 5 and a solar thermal collection field 7.

[0045] The input port of the soil heat storage body 5 is respectively connected to the output port of the surface sand temperature collector 4 and the output port pipeline of the solar energy storage tank 3, and the output port of the soil heat storage body 5 is respectively connected to the input port of the surface sand temperature collector 4 and the input port pipeline of the solar energy storage tank 3.

[0046] The output port of the solar thermal collecting field 7 is connected to the input port pipeline of the solar energy storage tank 3 , and the input port of the solar thermal collecting field 7 is connected to the output port pipeline of the solar energy storage tank 3 .

[0047] The output port of the solar energy storage tank 3 is used to connect to the input port pipeline of the heating and cooling terminal, and the input port of the solar energy storage tank 3 is used to connect to the output port pipeline of the heating and cooling terminal.

[0048] In this embodiment, the coils arranged in the solar energy storage tank 3 can use different media under different temperature requirements, and the tank body has the function of heat preservation and cold preservation. The surface sand temperature collector 4 adopts thermoplastic pipes with good flexibility and low brittle fracture temperature, preferably Polyethylene of Raised Temperature Resistance (PERT) pipes, which are laid on the surface into multiple U-shaped or ring-shaped loops, and finally gathered into a collector with an outlet and an inlet, and then covered with soft sandy soil. The heating and cooling end is the heating and cooling area, and the heating and cooling area can be equipped with fan coils, radiators, floor heating and other forms according to the situation to achieve the purpose of heating and cooling.

[0049] Exemplarily, the surface sand temperature collector 4 is arranged on the surface, making full use of the characteristics of small specific heat capacity of sand, rapid temperature rise under solar radiation, rapid cooling and low temperature when there is no sun, to fully collect solar energy and low-temperature environment cold energy, and store them across seasons. It is particularly suitable for heating and cooling systems in open and sandy surface environments such as deserts and Gobi, such as Gobi facility agriculture heating and cooling application scenarios.

[0050] In this embodiment, the solar energy collecting field 7 collects solar energy and converts it into heat energy, which is then input into the solar energy storage tank 3 for storage. The surface sand temperature collector 4 collects the heat of the surface sand and outputs it to the soil heat storage body 5 for storage. When heating is required, the soil heat storage body 5 can transfer the heat to the solar energy storage tank 3. The solar energy storage tank 3 provides energy for the heating and cooling terminals and receives the energy returned by the terminals.

[0051] For example, in Gobi facility agriculture, the solar energy collector field 7 and the surface sand temperature collector 4 work in summer, and the collected energy is stored in the solar energy storage tank 3 and the soil heat storage body 5 respectively. When heating is needed in winter, the solar energy storage tank 3 transmits heat to the greenhouse heating terminal, and the soil heat storage body 5 can also replenish energy as needed to maintain a suitable temperature in the greenhouse, promote the growth of crops, and achieve stable production of Gobi agriculture.

[0052] It can be concluded that, on the one hand, this embodiment makes full use of the surface sand temperature and solar energy, reduces dependence on traditional high-energy-consuming equipment such as gas boilers, coal-fired boilers and electric boilers, reduces electricity consumption, and meets the requirements of sustainable development.

[0053] On the other hand, this embodiment solves the problem of solar energy being restricted by weather. By combining the surface sand temperature collector 4 with the solar thermal field 7, and the cold and hot dual energy storage design of the soil thermal storage body 5 and the soil thermal storage body 6, heat can be fully stored in summer and cold can be fully stored in winter, and heating in winter and cooling in summer can be used to achieve continuity of heating and cooling. The construction and operation costs of solar energy are reduced, large-scale infrastructure investment is not required, site costs are greatly saved, and the operation costs of auxiliary energy are also reduced.

[0054] In one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: an energy storage buffer tank 1 and an energy release buffer tank 2 .

[0055] The output port of the energy storage buffer tank 1 is respectively connected to the input port of the surface sand temperature collector 4, the input port of the soil heat storage body 5 and the input port pipeline of the energy release buffer tank 2, and the input port of the energy storage buffer tank 1 is respectively connected to the output port of the surface sand temperature collector 4, the output port of the soil heat storage body 5 and the output port pipeline of the energy release buffer tank 2.

[0056] The output port of the energy release buffer tank 2 is used to connect to the input port pipeline of the heating and cooling terminal, and the input port of the energy release buffer tank 2 is used to connect to the output port pipeline of the heating and cooling terminal.

[0057] In this embodiment, coils are provided in the energy storage buffer tank 1 and the energy release buffer tank 2, and different media can be used under different temperature requirements, and the tank body has the function of heat preservation and cold preservation. When storing energy, energy enters the energy storage buffer tank 1 through the pipeline, and is then distributed to the soil heat storage body 5 or the soil cold storage body 6 for storage. When releasing energy, the energy of the soil heat storage body 5 or the soil cold storage body 6 is output to the heating and cooling terminal through the energy release buffer tank 2, and at the same time, each part of the energy can also flow back to the buffer tank for adjustment. The coils in the buffer tank increase the energy exchange area, and the heat preservation and cold preservation functions reduce energy loss. The energy storage buffer tank 1 and the energy release buffer tank 2 can be set in a central position close to the energy source and the heating and cooling terminal to facilitate pipeline connection and energy distribution.

[0058] For example, in the heating of a factory in the desert, when there is sufficient solar energy during the day, the energy collected by the solar collector field 7 is stored in the solar energy storage tank 3 for energy supply. If the heating demand continues to increase and the energy in the solar energy storage tank 3 is insufficient, the energy in the soil heat storage body 5 can be transferred to the energy release buffer tank 2, and the energy can be delivered to the heating end through the energy release buffer tank 2. At the same time, the energy output of the solar energy storage tank 3 can be stopped to ensure stable heating. The heat preservation and cold preservation function of the buffer tank ensures that energy loss is reduced during storage and transmission, improves energy utilization efficiency, and reduces operating costs.

[0059] The energy storage buffer tank 1 and the energy release buffer tank 2 provided in this embodiment can store heat and supply cold in summer, and store cold and supply heat simultaneously in winter, thereby improving the utilization rate of the equipment throughout the year, ensuring stable heating and cooling, reducing energy loss, improving energy utilization efficiency, and reducing operating costs. The energy storage buffer tank 1 and the energy release buffer tank 2 are particularly suitable for heating and cooling in factories and other places in special environments such as deserts, and have good practicality and economy.

[0060] In one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a soil cold storage body 6 .

[0061] The input port of the soil cold storage body 6 is respectively connected to the output port of the energy storage buffer tank 1 and the output port pipeline of the energy release buffer tank 2, and the output port of the soil cold storage body 6 is respectively connected to the input port of the energy storage buffer tank 1 and the input port pipeline of the energy release buffer tank 2.

[0062] In this embodiment, the soil heat storage body 5 and the soil cold storage body 6 are arranged in groups and regions, and pipes with high heat exchange efficiency, such as metal pipes, PE pipes, PERT pipes, etc., are laid in the body. They can be arranged horizontally or vertically in the soil in a U-shaped or sleeve form. The laid pipes are all below the permafrost layer. The medium in the heat exchange pipes in the soil has no contact with the groundwater, and only energy exchange is carried out.

[0063] In this embodiment, when the ambient temperature is low and cold is stored, the energy in the energy storage buffer tank 1 is transmitted to the soil cold storage body 6 through the pipeline, so that the soil cold storage body 6 stores cold energy. When the cold energy needs to be released, the cold energy in the soil cold storage body 6 flows to the energy release buffer tank 2 through the pipeline, and then is transported to the area where cold energy needs to be supplied. The soil heat storage body 5 and the soil cold storage body 6 are arranged in groups and regions, and can be switched according to different seasons and needs. The high-efficiency heat exchange pipeline laid in the body can improve the heat exchange efficiency with the soil and ensure the rapid storage and release of energy.

[0064] The soil heat storage body 6 in this embodiment works together with the energy storage buffer tank 1 and the energy release buffer tank 2 to achieve effective storage and release of cold, meet cooling needs, and improve the flexibility of energy utilization. The soil heat storage body 5 and the soil heat storage body 6 are arranged in groups and regions, and can be switched according to the season and demand to adapt to different working conditions and improve stability. The high-efficiency pipes laid in the body improve the heat exchange efficiency, speed up the energy storage and release speed, and reduce energy loss. It reduces energy consumption as a whole, provides reliable protection for heating and cooling, and is especially suitable for various application scenarios in special environments such as deserts.

[0065] In one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a medium circulation pump 11, an energy storage circulation pump 12, an energy release circulation pump 13, a solar energy circulation pump 14 and a heating and cooling circulation pump 15.

[0066] A medium circulation pump 11 is provided on the pipeline between the input port of the surface sand temperature collector 4 and the output port of the energy storage buffer tank 1 .

[0067] An energy storage circulation pump 12 is provided on the pipeline between the output port of the energy storage buffer tank 1 and the input port of the soil thermal storage body 5 .

[0068] An energy release circulation pump 13 is provided on the pipeline between the input port of the soil thermal storage body 5 and the output port of the energy release buffer tank 2 .

[0069] A solar circulation pump 14 is provided on the pipeline between the input port of the solar thermal collecting field 7 and the output port of the solar energy storage tank 3 .

[0070] A heating and cooling circulation pump 15 is provided on the pipeline between the output port of the solar energy storage tank 3 and the entrance of the heating and cooling area.

[0071] In this embodiment, the medium circulation pump 11 pushes the medium to flow between the energy storage buffer tank 1 and the surface sand temperature collector 4, so that the energy of the surface sand can be transmitted to the buffer tank or flow from the buffer tank to the collector for allocation. The energy storage circulation pump 12 transfers the energy in the energy storage buffer tank 1 to the soil heat storage body 5 for storage. The energy release circulation pump 13 transfers the energy of the soil heat storage body 5 to the energy release buffer tank 2 for release when needed. The solar energy circulation pump 14 drives solar energy to circulate between the solar collector field 7 and the solar energy storage tank 3 to realize the collection and storage allocation of solar energy. The heating and cooling circulation pump 15 is responsible for transmitting the energy of the solar energy storage tank 3 to the heating and cooling areas to meet the needs, and bringing the excess energy at the end back to the energy storage tank.

[0072] Exemplarily, the pump body is driven by a motor, and the speed is adjusted to control the medium flow. An automated control system is used to accurately control the start and stop and operating parameters of each circulating pump based on sensor data such as temperature and pressure. In the cooling and heating of the scientific research base in the desert, the solar circulation pump 14 runs during the day to store the solar energy collected by the solar collector field 7 into the solar energy storage tank 3. The medium circulation pump 11 transmits surface energy to the energy storage buffer tank 1 when appropriate. The energy storage circulation pump 12 stores the buffer tank energy into the soil heat storage body 5. When cooling or heating is needed, the heating and cooling circulation pump 15 is started to deliver energy to various areas of the scientific research base. If there is a change in energy demand, the energy release circulation pump 13 can allocate the energy of the soil heat storage body 5 and the energy release buffer tank 2 as needed to ensure the stability and efficiency of cooling and heating.

[0073] The provision of each circulating pump in this embodiment helps to accurately control the flow of energy, achieve efficient collection, storage and distribution, ensure stable and reliable heating and cooling, adapt to changes in energy demand, and improve energy utilization efficiency.

[0074] In one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a water source heat pump unit 8.

[0075] The first side output port of the water source heat pump unit 8 is connected to the input port pipeline of the solar energy storage tank 3 , and the first side input port of the water source heat pump unit 8 is connected to the output port pipeline of the solar energy storage tank 3 .

[0076] The second side output port of the water source heat pump unit 8 is connected to the input port pipeline of the energy release buffer tank 2 , and the second side input port of the water source heat pump unit 8 is connected to the output port pipeline of the energy release buffer tank 2 .

[0077] The water source heat pump unit 8 is used for both cold and hot supply.

[0078] In this embodiment, when heating is required, the water source heat pump unit 8 can extract the heat energy of the energy release buffer tank 2 from the second side, and output the heat energy from the first side to the solar energy storage tank 3 for energy supply. When cooling is required, the coldness of the soil heat storage body 6 is preferentially used, and the coldness is transported to the cooling terminal through the energy release buffer tank 2 for cooling. When the coldness is insufficient, the water source heat pump unit 8 can extract the heat energy of the energy release buffer tank 2 to the solar energy storage tank 3, cool the medium in the energy release buffer tank 2, and then transport it to the cooling terminal for cooling, and at the same time release the extracted heat to the soil heat storage body 5 through the solar energy storage tank 3.

[0079] The water source heat pump unit 8 of this embodiment uses heat pump technology to achieve efficient energy transfer and realizes the dual supply of heat and cold. By connecting with the pipeline of the solar energy storage tank 3 and the energy release buffer tank 2, it can meet different energy needs, and can effectively cope with both winter heating and summer cooling. In addition, the water source heat pump unit 8 of this embodiment can store cold energy in the soil cold storage body 6 while providing heat, and store heat in the soil heat storage body 5 while providing cooling, which greatly improves the energy utilization rate as well as flexibility and adaptability, and can adjust the working mode in time according to the actual heating or cooling demand, so that energy can be efficiently transmitted and utilized in the system. This design can also effectively integrate the energy related to solar energy and surface temperature, optimize the operating efficiency of the entire dual storage and dual supply system, and reduce energy waste.

[0080] In one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a water source heat pump second side circulation pump 16 and a water source heat pump first side circulation pump 17 .

[0081] A water source heat pump second side circulation pump 16 is arranged on the pipeline between the second side input port of the water source heat pump unit 8 and the output port of the energy release buffer tank 2 .

[0082] A water source heat pump first side circulation pump 17 is arranged on the pipeline between the first side input port of the water source heat pump unit 8 and the output port of the solar energy storage tank 3 .

[0083] In this embodiment, the water source heat pump first side circulation pump 17 controls the medium to circulate between the solar energy storage tank 3 and the first side of the water source heat pump unit 8. The water source heat pump second side circulation pump 16 controls the medium to circulate between the second side of the water source heat pump unit 8 and the energy release buffer tank 2.

[0084] When high-temperature energy needs to be delivered to the solar energy storage tank 3, the circulating pump 16 on the second side of the water source heat pump works to convert the low-temperature energy in the energy release buffer tank 2 into high-temperature energy, transmit the high-temperature energy to the first side of the water source heat pump unit 8, and store the low-temperature medium in the energy release buffer tank 2. At the same time, the circulating pump 17 on the first side of the water source heat pump transmits the received high-temperature energy to the solar energy storage tank 3, and the solar energy storage tank 3 provides heat. At this time, the low-temperature medium stored in the energy release buffer tank 2 on the other side can provide an energy source for cooling.

[0085] The water source heat pump second side circulation pump 16 in this embodiment helps to efficiently extract the low temperature energy of the energy release buffer tank 2, ensure the energy input of the water source heat pump unit 8, and promote energy conversion. The water source heat pump first side circulation pump 17 realizes the efficient circulation of high temperature energy between the unit and the solar energy storage tank 3, provides stable energy for heating and cooling, and facilitates energy regulation. The two work together to improve the efficiency of energy transfer.

[0086] like Figure 2 As shown, in one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a control module, a meteorological monitoring module and a soil monitoring module.

[0087] The control module is connected with the meteorological monitoring module and the soil monitoring module respectively.

[0088] The meteorological monitoring module is configured to collect meteorological data, and the soil monitoring module is configured to collect soil information.

[0089] The control module is configured to control the working states of the water source heat pump unit 8, the medium circulation pump 11, the energy storage circulation pump 12, the energy release circulation pump 13, the solar energy circulation pump 14, the heating and cooling circulation pump 15, the water source heat pump second side circulation pump 16 and the water source heat pump first side circulation pump 17 according to meteorological data and soil information.

[0090] In this embodiment, the weather monitoring module includes: Temperature and humidity sensors, rain sensors, and light intensity sensors.

[0091] The temperature and humidity sensor, the rain sensor and the light intensity sensor are all connected to the control module.

[0092] In this embodiment, the soil monitoring module includes: Soil temperature sensor and soil moisture sensor.

[0093] The soil temperature sensor and the soil moisture sensor are both connected to the control module.

[0094] In this embodiment, the temperature and humidity sensors, rainfall sensors and light intensity sensors in the meteorological monitoring module collect meteorological data in real time, and the soil temperature sensor and soil moisture sensor in the soil monitoring module collect soil information. These data are transmitted to the control module. The control module analyzes and processes the received meteorological data and soil information, judges the current weather conditions and soil conditions, and then controls the water source heat pump unit 8 and each circulation pump (medium circulation pump 11, energy storage circulation pump 12, energy release circulation pump 13, solar energy circulation pump 14, heating and cooling circulation pump 15, water source heat pump second side circulation pump 16 and water source heat pump first side circulation pump 17).

[0095] For example, on sunny days with sufficient sunlight, the control module can adjust the solar circulation pump 14 to increase the flow rate and store more solar energy into the solar energy storage tank 3. When the soil temperature is high, the relevant circulation pump can be adjusted to better utilize the surface sand temperature collector 4 to supplement the soil heat storage body 5 with energy.

[0096] In this embodiment, the temperature and humidity sensor, the rainfall sensor and the light intensity sensor provide meteorological data for the system, so that the control module can accurately control the water source heat pump unit 8 and each circulation pump to improve energy utilization efficiency. The soil temperature sensor and the soil moisture sensor help the control module to better manage the soil heat storage body, etc., to ensure the stable operation of the system, reduce energy consumption and cost, adapt to special environmental changes, and ensure heating and cooling needs.

[0097] like Figure 2 As shown, in one embodiment of the present disclosure, the dual storage and dual supply system based on ground surface temperature and solar energy further includes: a control valve module and an energy demand monitoring module.

[0098] The control module is connected with the energy demand monitoring module and the control valve module respectively.

[0099] The energy demand monitoring module is arranged at the heating and cooling terminal and is configured to monitor the energy demand data of the heating and cooling terminal. The control valve module is arranged on a plurality of pipelines.

[0100] The control module is also configured to control the opening degree of the control valve module according to the energy demand data of the heating and cooling terminals.

[0101] In this embodiment, the control valve module includes: surface temperature control valve No. 1 21, surface temperature control valve No. 2 22, heat storage switching control valve No. 1 23, heat storage switching control valve No. 2 24, heat storage control valve No. 1 25, heat storage control valve No. 2 26, heat release control valve No. 1 27, heat release control valve No. 2 28, cold storage control valve No. 1 29, cold storage control valve No. 2 30, cold release control valve No. 1 31, cold release control valve No. 2 32, cold supply control valve No. 1 33, cold supply control valve No. 2 34, heating control valve No. 1 35, heating control valve No. 2 36, solar thermal collection control valve No. 1 37 and solar thermal collection control valve No. 2 38.

[0102] A ground temperature control valve No. 1 21 is provided on the pipeline between the input port of the energy storage buffer tank 1 and the output port of the soil heat storage body 5 , and a heat storage control valve No. 1 25 is provided on the pipeline between the ground temperature control valve No. 1 21 and the output port of the soil heat storage body 5 .

[0103] A ground temperature control valve No. 2 22 is provided on the pipeline between the output port of the energy storage buffer tank 1 and the energy storage circulation pump 12 , and a heat storage control valve No. 2 26 is provided on the pipeline between the energy storage circulation pump 12 and the input port of the soil heat storage body 5 .

[0104] A first branch pipeline is led out from the pipeline between the ground temperature control valve No. 2 22 and the energy storage circulation pump 12 and connected to the output port of the solar energy storage tank 3 , and a heat storage switching control valve No. 1 23 is arranged on the first branch pipeline.

[0105] A second branch pipeline is led out from the pipeline between the ground temperature control valve No. 1 21 and the heat storage control valve No. 1 25 and connected to the input port of the solar energy storage tank 3 , and a heat storage switching control valve No. 2 24 is arranged on the second branch pipeline.

[0106] A third branch pipeline is led out from the pipeline between the heat storage control valve No. 1 25 and the output port of the soil heat storage body 5 and connected to the input port of the energy release buffer tank 2 . The heat release control valve No. 1 27 is arranged on the third branch pipeline.

[0107] A fourth branch pipeline is led out from the pipeline between the heat storage control valve No. 2 26 and the input port of the soil heat storage body 5 and connected to the output port of the energy release buffer tank 2 , and a heat release control valve No. 2 28 is arranged on the fourth branch pipeline.

[0108] A fifth branch pipeline is led out from the pipeline between the energy storage circulation pump 12 and the heat storage No. 2 control valve 26 and connected to the fourth branch pipeline. A cold storage No. 1 control valve 29 and a cooling release No. 1 control valve 31 are provided on the fifth branch pipeline.

[0109] A sixth branch pipeline is led out from the pipeline between the ground temperature control valve No. 1 21 and the heat storage control valve No. 1 25 and connected to the third branch pipeline. A cold storage control valve No. 2 30 and a cooling release control valve No. 2 32 are provided on the sixth branch pipeline.

[0110] A seventh branch pipeline is led out from the pipeline between the cold storage control valve No. 1 29 and the cooling release control valve No. 1 31 and connected to the input port of the soil cold storage body 6 .

[0111] An eighth branch pipeline is led out from the pipeline between the cold storage control valve No. 2 30 and the cooling release control valve No. 2 32 and connected to the output port of the soil cold storage body 6 .

[0112] A heating No. 1 control valve 35 is provided on the pipeline between the input port of the solar energy storage tank 3 and the output port of the heating and cooling terminal, and a heating No. 2 control valve 36 is provided on the pipeline between the output port of the solar energy storage tank 3 and the input port of the heating and cooling terminal.

[0113] A ninth branch pipeline is led out from the pipeline between the output port of the heating and cooling terminal and the heating No. 1 control valve 35 and connected to the input port of the energy release buffer tank 2, and a cooling No. 1 control valve 33 is arranged on the ninth branch pipeline. A tenth branch pipeline is led out from the pipeline between the input port of the heating and cooling terminal and the heating No. 2 control valve 36 and connected to the output port of the energy release buffer tank 2, and a cooling No. 2 control valve 34 is arranged on the tenth branch pipeline.

[0114] A solar thermal collector No. 1 control valve 37 is arranged on the pipeline between the output port of the solar thermal collector field 7 and the input port of the solar energy storage tank 3 , and a solar thermal collector No. 2 control valve 38 is arranged on the pipeline between the solar circulation pump 14 and the output port of the solar energy storage tank 3 .

[0115] Exemplarily, the energy storage process includes a cold storage mode and a heat storage mode.

[0116] For the cold storage mode: the ground cold absorbed by the ground sand temperature collector 4 is transmitted to the medium in the pipeline, and the medium is circulated in the pipeline by the medium circulation pump 11, and the cold is stored in the energy storage buffer tank 1. According to the temperature of the medium in the energy storage buffer tank 1, the control module can control the start and stop state of the energy storage circulation pump 12, and store the cold in the energy storage buffer tank 1 in the soil cold storage body 6 through medium circulation, completing the cold storage process. In this process, the ground temperature control valve No. 1 21, the ground temperature control valve No. 2 22, the cold storage control valve No. 1 29, and the cold storage control valve No. 2 30 are in the open state, and the heat storage switching control valve No. 1 23, the heat storage switching control valve No. 2 24, the heat storage control valve No. 1 25, the heat storage control valve No. 2 26, the cooling control valve No. 1 31, and the cooling control valve No. 2 32 are in the closed state.

[0117] For the heat storage mode: the surface heat absorbed by the surface sand temperature collector 4 is transferred to the medium in the pipeline, and the medium is circulated in the pipeline through the medium circulation pump 11, and the heat is stored in the energy storage buffer tank 1. The solar heat absorbed by the solar collector field 7 is circulated in the pipeline through the solar circulation pump 14, and the solar collector control valve No. 1 37 and the solar collector control valve No. 2 38 are opened to store the heat in the solar energy storage tank 3. In the above two heat storage processes based on the surface sand temperature and the solar temperature, the heat storage switching control valve No. 1 23 and the heat storage switching control valve No. 2 24 are in the closed state. The medium temperature in the energy storage buffer tank 1 and the solar energy storage tank 3 is monitored in real time. When the medium in the energy storage buffer tank 1 reaches the storage temperature, the surface temperature control valve No. 1 21, the surface temperature control valve No. 2 22, the heat storage control valve No. 1 25, and the heat storage control valve No. 2 26 are opened, and the energy storage circulation pump 12 works to store the medium temperature in the soil heat storage body 5 through circulation. When the medium in the solar energy storage tank 3 reaches the storage temperature, the ground temperature control valve No. 1 21, the ground temperature control valve No. 2 22, the solar heat collection control valve No. 1 37, and the solar heat collection control valve No. 2 38 are closed, the solar circulation pump 14 stops, the heat storage switching control valve No. 1 23, the heat storage switching control valve No. 2 24, the heat storage control valve No. 1 25, and the heat storage control valve No. 2 26 are opened, and the energy storage circulation pump 12 works to store the medium temperature in the soil heat storage body 5 through circulation. When the energy storage buffer tank 1 and the solar energy storage tank 3 reach the storage temperature at the same time, the temperature of the solar energy storage tank 3 is stored first.

[0118] Exemplarily, the energy supply process includes a cooling mode and a heating mode.

[0119] For the cooling mode: the cooling control valve 1 31 and the cooling control valve 2 32 are opened, the cold storage control valve 1 29 and the cold storage control valve 2 30 are closed, and the energy release circulation pump 13 is working, and the cold stored in the soil cold storage body 6 is transferred to the energy release buffer tank 2 through the medium circulation. When the cooling temperature is reached, the cooling control valve 1 33 and the cooling control valve 2 34 are opened, and the heating and cooling circulation pump 15 is working to send the cold to the area that needs cooling. When the cold capacity of the soil cold storage body 6 is insufficient, the water source heat pump unit 8 cools the energy release buffer tank 2, and the energy release buffer tank 2 continues to provide cooling.

[0120] For the heating mode: when the heating season arrives, the solar collector field 7 works, absorbs the heat from the sun, and transfers the heat to the solar energy storage tank 3 through the solar circulation pump 14 to heat the medium. At the same time, the heat release control valve No. 1 27 and the heat release control valve No. 2 28 are opened, and the energy release circulation pump 13 works to transfer the heat in the soil heat storage body 5 to the energy release buffer tank 2 through the medium circulation. When heating is needed, the solar energy storage tank 3 is used first, the cooling control valve No. 1 33 and the cooling control valve No. 2 34 are closed, the heating control valve No. 1 35 and the heating control valve No. 2 36 are opened, and the heating and cooling circulation pump 15 works to send the heat to the area that needs heating. When the temperature of the solar energy storage tank 3 does not reach the heating temperature, the water source heat pump unit 8, the water source heat pump second side circulation pump 16, and the water source heat pump first side circulation pump 17 start to work, and the higher quality heat source in the energy release buffer tank 2 is lifted through the water source heat pump unit 8 and extracted to the solar energy storage tank 3, so as to always keep the temperature of the solar energy storage tank 3 to meet the heating demand.

[0121] For example, in a factory application scenario in the desert, the energy demand monitoring module monitors the energy demand data of the heating and cooling terminals of the factory in real time, and transmits the data to the control module. For example, in summer, when the temperature in the factory rises, the energy demand monitoring module detects that the cooling demand has increased. After receiving the data, the control module increases the opening of the cooling control valve No. 1 33 and the cooling control valve No. 2 34, and at the same time opens the cooling control valve No. 1 31 and the cooling control valve No. 2 32, closes the cold storage control valve No. 1 29 and the cold storage control valve No. 2 30, and allows the energy release circulation pump 13 to work, and transfers the cold in the soil cold storage body 6 to the energy release buffer tank 2, and then the heating and cooling circulation pump 15 delivers it to the factory cooling area. If the soil cold storage body 6 does not have enough cold, the control module adjusts the water source heat pump unit 8 to cool the energy release buffer tank 2 to continue cooling. In winter, when an increase in heating demand is detected, the control module will prioritize increasing the opening of heating control valve No. 1 35 and heating control valve No. 2 36, and use the solar energy storage tank 3 for heating. If the temperature is insufficient, the water source heat pump unit 8 and other equipment will be started to increase the heat source of the energy release buffer tank 2 to the solar energy storage tank 3.

[0122] In this embodiment, the energy demand data can be comprehensively calculated using the heat / cooling load method, taking into account parameters such as the area of ​​the heating / cooling area, the thermal conductivity of the enclosure structure (walls, roofs, windows, etc.), and the indoor and outdoor temperature difference.

[0123] For example, the energy demand monitoring module monitors the temperature, flow and other parameters of the heating and cooling terminals in real time, and continuously adjusts the calculation of energy demand in combination with changes in the indoor and outdoor environments. For example, when the outdoor temperature suddenly rises or drops, the heat load or cooling load is recalculated based on the real-time monitoring data and the above calculation method, and then the opening of the control valve module and the operating status of each device are adjusted to meet the actual energy demand. At the same time, considering the changes in the use of the building (such as the increase or decrease in the number of people, the opening or closing of equipment, etc.), the calculation of energy demand and the operation strategy of the system are adjusted in a timely manner.

[0124] In this embodiment, the control module is combined with the energy demand monitoring module and multiple control valves to accurately control the operation of the system. The control module can adjust the opening of the control valve according to the energy demand, so that the solar energy storage tank 3, the soil heat storage body 5 and the soil cold storage body 6 can efficiently supply energy. Improve energy utilization efficiency and reduce energy consumption costs. Adapt to changes in indoor and outdoor environments and building usage, and ensure stable and reliable heating and cooling.

[0125] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A dual storage and dual supply system based on ground surface temperature and solar energy, characterized in that: include: A solar energy storage tank (3), a surface sand temperature collector (4), a soil heat storage body (5) and a solar thermal collection field (7); The input port of the soil heat storage body (5) is respectively connected to the output port of the surface sand temperature collector (4) and the output port pipeline of the solar energy storage tank (3), and the output port of the soil heat storage body (5) is respectively connected to the input port of the surface sand temperature collector (4) and the input port pipeline of the solar energy storage tank (3); The output port of the solar thermal collection field (7) is connected to the input port pipeline of the solar energy storage tank (3), and the input port of the solar thermal collection field (7) is connected to the output port pipeline of the solar energy storage tank (3); The output port of the solar energy storage tank (3) is used to connect to the input port pipeline of the heating and cooling terminal, and the input port of the solar energy storage tank (3) is used to connect to the output port pipeline of the heating and cooling terminal.

2. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 1, characterized in that: Also includes: An energy storage buffer tank (1) and an energy release buffer tank (2); The output port of the energy storage buffer tank (1) is respectively connected to the input port of the surface sand temperature collector (4), the input port of the soil heat storage body (5) and the input port pipeline of the energy release buffer tank (2); the input port of the energy storage buffer tank (1) is respectively connected to the output port of the surface sand temperature collector (4), the output port of the soil heat storage body (5) and the output port pipeline of the energy release buffer tank (2); The output port of the energy release buffer tank (2) is used to be connected to the input port pipeline of the heating and cooling terminal, and the input port of the energy release buffer tank (2) is used to be connected to the output port pipeline of the heating and cooling terminal.

3. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 2, characterized in that: Also includes: A medium circulation pump (11), an energy storage circulation pump (12), an energy release circulation pump (13), a solar energy circulation pump (14) and a heating and cooling circulation pump (15); A medium circulation pump (11) is provided on the pipeline between the input port of the surface sand temperature collector (4) and the output port of the energy storage buffer tank (1); An energy storage circulation pump (12) is provided on the pipeline between the output port of the energy storage buffer tank (1) and the input port of the soil heat storage body (5); An energy release circulation pump (13) is provided on the pipeline between the input port of the soil heat storage body (5) and the output port of the energy release buffer tank (2); A solar circulation pump (14) is provided on the pipeline between the input port of the solar thermal collection field (7) and the output port of the solar energy storage tank (3); A heating and cooling circulation pump (15) is provided on the pipeline between the output port of the solar energy storage tank (3) and the entrance of the heating and cooling area.

4. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 2, characterized in that: Also includes: Water source heat pump unit (8); The first side output port of the water source heat pump unit (8) is connected to the input port pipeline of the solar energy storage tank (3), and the first side input port of the water source heat pump unit (8) is connected to the output port pipeline of the solar energy storage tank (3); The second side output port of the water source heat pump unit (8) is connected to the input port pipeline of the energy release buffer tank (2), and the second side input port of the water source heat pump unit (8) is connected to the output port pipeline of the energy release buffer tank (2); The water source heat pump unit (8) is used for dual supply of cooling and heating.

5. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 4, characterized in that: Also includes: A water source heat pump second side circulation pump (16) and a water source heat pump first side circulation pump (17); A water source heat pump second side circulation pump (16) is provided on the pipeline between the second side input port of the water source heat pump unit (8) and the output port of the energy release buffer tank (2); A water source heat pump first side circulation pump (17) is arranged on the pipeline between the first side input port of the water source heat pump unit (8) and the output port of the solar energy storage tank (3).

6. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 5, characterized in that: Also includes: Control module, weather monitoring module and soil monitoring module; The control module is connected to the meteorological monitoring module and the soil monitoring module respectively; The meteorological monitoring module is configured to collect meteorological data, and the soil monitoring module is configured to collect soil information; The control module is configured to control the working states of the water source heat pump unit (8), the medium circulation pump (11), the energy storage circulation pump (12), the energy release circulation pump (13), the solar energy circulation pump (14), the heating and cooling circulation pump (15), the water source heat pump second side circulation pump (16) and the water source heat pump first side circulation pump (17) according to the meteorological data and the soil information.

7. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 6, characterized in that: Also includes: Control valve module and energy demand monitoring module; The control module is connected to the energy demand monitoring module and the control valve module respectively; The energy demand monitoring module is arranged at the heating and cooling terminal, and is configured to monitor the energy demand data of the heating and cooling terminal; the control valve module is arranged on a plurality of pipelines; The control module is also configured to control the opening of the control valve module according to the energy demand data of the heating and cooling terminal.

8. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 6, characterized in that: The meteorological monitoring module comprises: Temperature and humidity sensors, rain sensors, and light intensity sensors; The temperature and humidity sensor, the rainfall sensor and the light intensity sensor are all connected to the control module.

9. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 6, characterized in that: The soil monitoring module comprises: Soil temperature sensor and soil moisture sensor; The soil temperature sensor and the soil moisture sensor are both connected to the control module.

10. The dual storage and dual supply system based on ground surface temperature and solar energy as claimed in claim 2, characterized in that: Also includes: Soil cool storage (6); The input port of the soil cold storage body (6) is respectively connected to the output port of the energy storage buffer tank (1) and the output port pipeline of the energy release buffer tank (2), and the output port of the soil cold storage body (6) is respectively connected to the input port of the energy storage buffer tank (1) and the input port pipeline of the energy release buffer tank (2).

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