A ground-source type cold and hot water combined heat and power system

Abstract

The application provides a ground source type cold and hot water combined heat and power system, which comprises a ground source heat pump module, a heat storage module, an absorption refrigeration module, a condensation water collection module, a turbine power generation module and a user end. The ground source heat pump is used as an efficient heating and refrigeration technology, and when it is combined with the combined heat and power system, multiple advantages can be brought, such as high energy efficiency, environmental friendliness, space saving, stability and reliability, long service life, low operation cost and multifunctionality. The ground source heat pump is embedded in the combined heat and power system, and has significant advantages in improving energy utilization efficiency, reducing environmental impact, ensuring energy supply stability and economy.

Description

Technical Field

[0001] This invention relates to the field of heating and cooling technology, specifically to a ground-source combined cooling and heating system. Background Technology

[0002] A ground source heat pump system uses ground energy (soil, groundwater, surface water, low-temperature geothermal water, and tailwater), typically soil, as the cooling source for summer cooling and the low-temperature heat source for winter heating. It is a system that provides heating, cooling, and domestic hot water. With the continuous development of modern society, human demand for energy has increased dramatically. At the same time, the depletion of traditional energy sources and environmental pollution problems are becoming increasingly serious. To address the intermittency and instability of renewable energy sources such as solar energy, storing excess energy for use at specific times—a common and effective way to utilize energy—is a common practice. Geothermal energy is a clean and renewable energy source with advantages such as environmental friendliness, stability, and sustainability. Phase change energy storage can store excess energy during off-peak periods and release it during peak periods, achieving time-based energy supply and demand matching. This time-based matching mode not only improves energy efficiency but also reduces dependence on high-energy-consuming resources such as traditional coal combustion, lowers energy costs and environmental pollution, and can achieve long-term or even seasonal thermal energy storage goals. Geothermal energy can be utilized through geothermal power generation, heating, cooling, and air-to-water extraction, which is of great significance for reducing dependence on fossil fuels, protecting the environment, and promoting sustainable development. In geothermal energy systems, phase change materials can serve as energy storage devices, improving system efficiency and stability by absorbing and releasing heat.

[0003] However, there is currently no theoretical research or engineering application of a geothermal energy storage system that combines multiple functions such as power generation, heating, cooling, and air extraction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a ground-source combined heat and water power system that realizes efficient utilization of ground-source energy and provides heating, cooling, water intake and power generation.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A ground-source combined cooling, heating, and power system includes: Ground source heat pump modules are used to provide energy from the ground, including condensers and refrigeration heat exchangers; A thermal energy storage module is used to store thermal energy and release it for use as needed; it includes a hot water storage tank and a power generation heat exchanger for generating electricity. An absorption refrigeration module is used to prepare a low-temperature cold source, including an absorption refrigeration primary heat exchanger and a primary evaporator. The condensate collection module is used to collect moisture from the air and includes a water collection heat exchanger and an alternating heat exchanger. Turbine power generation module, used to convert the kinetic energy of fluid into mechanical energy, and then further into electrical energy, includes a low-boiling-point working fluid channel and a cooling tower; The user terminal is used to utilize energy on demand, including underfloor heating coils; The underfloor heating coil is connected to the condenser pipe. The refrigeration heat exchanger is connected to the heat storage module pipe and is used to transfer the heat of the compressed high-temperature refrigerant to the absorption refrigeration module. The absorption refrigeration primary heat exchanger is located in the hot water storage tank and is used to transfer the heat in the hot water storage tank to the absorption refrigeration module. The power generation heat exchanger is connected to the low-boiling-point working fluid channel. The primary evaporator is used to evaporate the refrigerant under low pressure and absorb the heat of the surrounding air or water to achieve a cooling effect. The water collection heat exchanger is located in the primary evaporator and is used to transfer the cold energy in the primary evaporator to the condensate collection module. The AC heat exchanger is connected to the cooling tower through a closed pipe.

[0006] Furthermore, in this invention, the ground source heat pump module also includes a geothermal coil serving as a water circulation carrier for absorbing geothermal energy, a water collector for connecting the water supply pipes of each heating pipe, a water channel solenoid valve for controlling the opening and closing of the water circulation channel, a water circulation pump for transporting the water medium by increasing the kinetic energy of the fluid, an evaporator for geothermal heat exchange, a water distributor for connecting the return water pipes of each heating pipe, a refrigerant pipe for containing the refrigerant medium, an expansion valve for throttling and pressure reduction, a four-way valve for changing the direction of refrigerant gas flow, and a compressor for compressing the low-temperature, low-pressure refrigerant vapor to increase the temperature and pressure of the refrigerant. The geothermal coil is connected to the water collector and water distributor pipes. The water collector, evaporator, and water distributor pipes are connected in series. The water channel solenoid valve and water circulation pump are installed on the connecting pipe between the water collector and the evaporator. The evaporator, four-way reversing valve, and condenser pipes are connected in series. The refrigerant pipe is the connecting pipe between the evaporator and the condenser. The expansion valve is installed on the expansion valve. The four-way reversing valve, compressor, and refrigeration heat exchanger pipes are connected in series.

[0007] Furthermore, in this invention, the heat storage module also includes a heat storage solenoid valve for opening and closing the heat storage pipeline, a heat storage circulation pump for circulating the heat storage fluid medium, a two-position two-way solenoid valve for controlling power generation, a two-position two-way solenoid valve for controlling heat storage, a heat storage heat exchanger for transferring heat to the hot water storage tank, a phase change energy storage tank storing the phase change energy storage medium, a primary heat exchanger for transferring heat from the hot water storage tank to the phase change energy storage tank, a heat transfer circulation pump for circulating the heat transfer fluid medium, a heat transfer solenoid valve for opening and closing the heat transfer fluid medium channel, a secondary heat exchanger for transferring heat from the hot water storage tank to the phase change energy storage tank, a hot water solenoid valve for providing hot water to the outside, a full-process water processor for treating external collected water, and an external collected water solenoid valve for controlling the flow of external collected water into the hot water storage tank. The secondary heat exchanger is connected to the primary heat exchanger via piping, and the secondary heat exchanger is located inside the phase change energy storage tank. The primary heat exchanger is located inside the hot water storage tank. The heat transfer circulation pump and the heat transfer solenoid valve are located on the connecting pipe between the secondary heat exchanger and the primary heat exchanger. The hot water solenoid valve is located on the pipe supplying hot water from the hot water storage tank to the outside. The whole-process water processor and the external water collection solenoid valve are located on the pipe connecting the hot water storage tank to the external water collection tank. The thermal storage heat exchanger is located inside the hot water storage tank. The thermal storage heat exchanger is connected to the power generation heat exchanger via piping. The two-way solenoid valve and the thermal storage two-position two-way solenoid valve are located on the connecting pipe between the thermal storage heat exchanger and the power generation heat exchanger. The refrigeration heat exchanger, the thermal storage solenoid valve, the thermal storage circulation pump, and the thermal storage heat exchanger and the power generation heat exchanger are connected in parallel via piping.

[0008] Furthermore, in this invention, the absorption refrigeration module also includes an absorption refrigeration heat exchange medium circulation pump for circulating the absorption refrigeration heat exchange medium, an absorption refrigeration heat exchange solenoid valve for opening and closing the absorption refrigeration heat exchange medium channel, an absorption refrigeration secondary heat exchanger for transferring heat from the hot water storage tank to the absorption refrigeration module, a generator for heating the working fluid of the solution to separate the refrigerant and absorbent, a conversion condenser for releasing the heat of the refrigerant vapor to the outside to achieve a phase change between the gaseous and liquid states, a throttling valve for controlling the refrigerant flow from the conversion condenser to the primary evaporator and reducing the refrigerant pressure in the process, and a valve for the absorbent to absorb low-temperature refrigerant heat exchange medium. The system includes: an absorber for pressurizing refrigerant vapor; a circulating working fluid pump for pumping the low-concentration working fluid from the absorber back to the generator; a preheating heat exchanger for transferring heat from the lean fluid to the cold, rich fluid about to enter the generator, thereby improving the system's thermal efficiency; a solenoid valve for controlling the flow of rich fluid from the generator into the absorber; a first circulating spray pump for sufficient heat absorption and spraying; a second circulating spray pump for sufficient refrigerant absorption and spraying; a cooling tower for cooling; a circulating cooling water pump; a cooling water solenoid valve for controlling the cooling water passages; a cooling heat exchanger for cooling the conversion condenser; and a working fluid cooling heat exchanger for cooling the absorber.

[0009] Furthermore, in this invention, the primary absorption refrigeration heat exchanger and the secondary absorption refrigeration heat exchanger are connected in series, and the secondary absorption refrigeration heat exchanger is located inside the generator. The absorption refrigeration heat exchange medium circulation pump and the absorption refrigeration heat exchange solenoid valve are located on the pipeline between the primary and secondary absorption refrigeration heat exchangers. The generator and the conversion condenser are connected in series. The cooling heat exchanger is located inside the conversion condenser, and the solution working fluid cooling heat exchanger is located inside the absorber. The cooling heat exchanger, the cooling tower, and the cooling heat exchanger pipeline are connected in series. The circulating cooling water pump and cooling water solenoid valve are located on the connecting pipe between the cooling tower and the cooling heat exchanger. The throttling valve is located on the connecting pipe between the conversion condenser and the primary evaporator. The first circulating spray pump is located on the circulating pipe of the primary evaporator. The second circulating spray pump is located on the circulating pipe of the absorber. The generator and the absorber are connected in series through two pipes. The preheating heat exchanger is connected to the two pipes connecting the generator and the absorber. The circulating solution working fluid pump and the solution working fluid solenoid valve are respectively located on the two pipes connecting the generator and the absorber.

[0010] Furthermore, in this invention, the condensate collection module further includes a collection circulation pipe containing a collection circulation medium, a collection circulation solenoid valve for opening and closing the collection circulation pipe, a collection circulation pump for circulating the collection circulation medium, a compensation tank for compensating the collection circulation medium, an opening and closing solenoid valve for opening and closing the compensation tank, a condensate collector, a collection tank, a water processor for the entire collection process, a collection tank solenoid valve, a collection tank pump, a collection tank, and an external water collection solenoid valve; multiple condensate collector pipes are connected in series, the water heat exchanger is connected to the condensate collector pipes, and the condensate collector... A compensation tank is connected in parallel via pipelines. The solenoid valve is located on the pipeline between the compensation tank and the condensate collector. The water circulation solenoid valve and the water circulation pump are located on the pipeline between the water heat exchanger and the condensate collector. Multiple water collection tanks are connected in series via pipelines. The pipeline connecting the water heat exchanger and the AC heat exchanger is connected in parallel with the water collection tank pipeline. The water collection tank is connected in parallel with the water collection bucket pipeline via pipelines. The external water supply solenoid valve is located on the external water supply pipeline of the water collection tank. The water collection full-process water processor, the water collection tank solenoid valve, and the water collection tank pump are located on the pipeline connecting the water collection tank and the water collection bucket pipelines.

[0011] Furthermore, in this invention, the turbine power generation module also includes a low-boiling-point working fluid circulation pump, a turbine, a generator, a working fluid condenser, a cooling circulation pump, and a recirculation pump; the generator is connected to the turbine, the low-boiling-point working fluid channel is a series connection pipeline of the turbine, the power generation heat exchanger, and the working fluid condenser, the low-boiling-point working fluid circulation pump is located on the low-boiling-point working fluid channel, the cooling circulation pump is located on the closed pipeline connecting the cooling tower and the working fluid condenser, and the recirculation pump is located on the closed pipeline connecting the cooling tower and the AC heat exchanger.

[0012] Furthermore, in this invention, the user terminal also includes an air conditioning unit, a first solenoid valve, a circulating solution pump, a second solenoid valve, a third solenoid valve, and a compensation solution tank; the air conditioning unit is connected in parallel with the underfloor heating coil; the first solenoid valve and the circulating solution pump are located on the connection pipeline between the underfloor heating coil and the condenser; the second solenoid valve is located on the connection pipeline between the underfloor heating coil and the air conditioning unit; the compensation solution tank is connected to the connection pipeline between the underfloor heating coil and the condenser; and the third solenoid valve is located on the connection pipeline between the compensation solution tank and the connection pipeline between the underfloor heating coil and the condenser.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention relies on geothermal energy and integrates a thermal storage module, an absorption refrigeration module, a condensate collection module, a turbine power generation module, and a user terminal to achieve heating, cooling, hot water supply, and power generation using underground geothermal energy. When the underfloor heating coils are directly connected to the condenser pipes, the energy transmission path is simpler and clearer, reducing energy loss during transmission. The refrigeration heat exchanger is connected to the thermal storage module pipes, and the primary absorption refrigeration heat exchanger is located inside the hot water storage tank. This connection method also enables effective heat storage and transfer. The presence of the thermal storage module allows for temporary heat storage, which is then transferred to the absorption refrigeration module when needed. This heat storage and scheduling makes the entire refrigeration system more flexible and efficient, as it can flexibly release or transfer heat as needed, thus better adapting to actual energy utilization demands. The power generation heat exchanger is connected to a low-boiling-point working fluid channel. This connection method allows the power generation heat exchanger to effectively utilize the heat energy transferred by the low-boiling-point working fluid channel, achieving high-efficiency energy utilization. This design enables the system to generate electricity while utilizing energy more effectively. By placing the water-collecting heat exchanger inside the evaporator, the cooling capacity in the primary evaporator can be maximized, ensuring efficient transfer and utilization of cooling capacity. This compact design reduces energy loss during transmission. Secondly, the water-collecting heat exchanger transfers the cooling capacity from the evaporator to the condensate collection module. The system can more fully utilize the evaporation and condensation processes of the refrigerant, directly transferring heat from one area to another, achieving efficient energy conversion and utilization. The waste heat exchanger is connected to the cooling tower via a closed pipe, allowing it to fully utilize the cooling capacity transferred by the cooling tower, achieving high-efficiency energy utilization. This four-generation system can fully utilize underground geothermal resources, achieving efficient and comprehensive energy utilization, and diversified energy use, which is of great significance in energy conservation, emission reduction, and sustainable energy utilization. By using the stable underground temperature for heat exchange, it can provide stable and reliable cooling and heating effects, unaffected by changes in external temperature, while reducing dependence on traditional energy sources, energy consumption, and environmental pollution. The condensation and water collection module utilizes condensation technology to collect water vapor in the air, condensing it into liquid water for use. The refrigerant in absorption refrigeration can condense water vapor in the air into liquid water without requiring an additional water source. Therefore, this invention can provide drinking water in arid regions or areas without running water. The absorption refrigeration module utilizes absorption refrigeration technology, extracting underground heat energy to the surface through an underground heat exchanger, and then inputting the heat energy into the absorption chiller. The cooling effect is achieved through the absorption and release process of the absorbent and condenser. Geothermal energy is stable and sustainable, providing a consistent energy supply, making the refrigeration system more efficient, and significantly reducing energy consumption and saving energy costs.

[0014] 2. This invention utilizes phase change energy storage technology, using underground thermal energy to heat the energy storage medium in the phase change energy storage system, causing it to undergo a phase change and release latent heat. The released heat energy is then used for heating or other purposes. This utilizes the stable and continuous characteristics of geothermal heat, combined with the high energy density and high efficiency of phase change energy storage, to achieve efficient energy utilization and storage.

[0015] 3. This invention utilizes fractals to optimize the structure of phase change energy storage. Fractal structures have complex geometric shapes and spatial distribution patterns, which can improve the surface area and volume ratio of the energy storage system and optimize heat transfer performance, thereby increasing energy storage density and transmission efficiency.

[0016] 4. This invention uses geothermal energy to heat a low-boiling-point working fluid, causing it to evaporate into high-temperature and high-pressure steam. The steam is then sent into a turbine unit to drive the turbine unit to generate electricity. This technology is environmentally friendly and renewable, and is a promising clean energy power generation method.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the ground source heat pump module structure of the present invention; Figure 3 This is a flowchart illustrating the operation of the ground source heat pump module of the present invention. Figure 4 This is a schematic diagram of the heat storage module structure of the present invention; Figure 5 This is a flowchart illustrating the various operating modes of the heat storage module of the present invention; Figure 6 This is a cross-sectional schematic diagram of the phase change energy storage tank of the present invention; Figure 7 A schematic diagram of the cross-sectional Hilbert fractal curve of the variable energy storage tank of the present invention; Figure 8 This is a schematic diagram of the absorption refrigeration module structure of the present invention; Figure 9 This is a schematic diagram of the condensate collection module structure of the present invention; Figure 10 This is a schematic diagram of the turbine power generation module structure of the present invention; Figure 11 This is a schematic diagram of the user terminal structure of the present invention.

[0019] In the diagram: 1. Ground source heat pump module; 11. Geothermal coil; 12. Water collector; 13. Water channel solenoid valve; 14. Water circulation pump; 15. Evaporator; 16. Water distributor; 17. Refrigerant pipe; 18. Expansion valve; 19. Condenser; 110. Condenser; 111. Compressor; 112. Refrigeration heat exchanger; 2. Thermal storage module; 21. Thermal storage solenoid valve; 22. Thermal storage circulation pump; 23. Two-way solenoid valve; 24. Electricity generation heat exchanger; 25. Two-way solenoid valve; 26. Thermal storage heat exchanger; 27. Hot water storage tank; 28. Primary heat exchanger; 29. ​​Heat transfer circulation pump; 210. Heat transfer solenoid valve; 211. Secondary heat exchanger; 212. Phase change energy storage tank; 213. Hot water solenoid valve; 214. Full-process water processor; 215. External water collection solenoid valve; 3. Absorption refrigeration module; 31. Primary heat exchanger for absorption refrigeration; 32. Circulating pump for absorption refrigeration heat exchange medium; 33. Solenoid valve for absorption refrigeration heat exchange; 34. Secondary heat exchanger for absorption refrigeration; 35. Generator; 36. Conversion condenser; 37. Throttling valve; 38. Primary evaporator; 39. Absorber; 310. Circulating working fluid pump; 311. Preheating heat exchanger; 312. Solenoid valve for working fluid; 313. First circulating spray pump; 314. Second circulating spray pump; 315. Cooling tower; 316. Circulating cooling water pump; 317. Cooling water solenoid valve; 318. Cooling heat exchanger; 319. Working fluid cooling heat exchanger; 4. Condensate collection module; 41. Water collection heat exchanger; 42. Water collection circulation pipe; 43. Water collection circulation solenoid valve; 44. Water collection circulation pump; 45. Compensation tank; 46. On / off solenoid valve; 47. Condensate collector; 48. Water collection tank; 49. Water collection system; 410. Water collection system; 411. Water collection tank pump; 412. Water collection tank; 413. External water supply solenoid valve; 414. Waste heat exchanger; 5. Turbine power generation module; 51. Low-boiling-point working fluid channel; 52. Low-boiling-point working fluid circulation pump; 53. Turbine; 54. Generator; 55. Working fluid condenser; 56. Cooling circulation pump; 57. Cooling tower; 58. Recirculation circulation pump; 6. User terminal; 61. Underfloor heating coil; 62. Air conditioning unit; 63. First solenoid valve; 65. Second solenoid valve; 66. Third solenoid valve; 67. Compensation solution tank. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] For an example, please refer to the appendix. Figure 1-11 A ground-source combined cooling, heating, and power system, comprising: Ground source heat pump module 1, which provides a ground source of energy, includes a condenser 19 and a refrigeration heat exchanger 112; The thermal energy storage module 2 is used to store thermal energy and release it as needed; it includes a hot water storage tank 27 and a power generation heat exchanger 24 for generating electricity. Absorption refrigeration module 3, used to prepare low-temperature cold source, includes absorption refrigeration primary heat exchanger 31 and primary evaporator 38; The condensate collection module 4 is used to collect moisture from the air, and includes a water collection heat exchanger 41 and a waste heat exchanger 414. Turbine power generation module 5 is used to convert the kinetic energy of the fluid into mechanical energy, and then further into electrical energy. It includes a low-boiling-point working fluid channel 51 and a cooling tower 57. User terminal 6 is used for on-demand energy use, including underfloor heating coils 61; The underfloor heating coil 61 is connected to the condenser 19 pipe. The refrigeration heat exchanger 112 is connected to the heat storage module 2 pipe and is used to exchange the heat of the compressed high-temperature refrigerant into the absorption refrigeration module 3. The absorption refrigeration primary heat exchanger 31 is located in the hot water storage tank 27 and is used to transfer the heat in the hot water storage tank 27 to the absorption refrigeration module 3. The power generation heat exchanger 24 is connected to the low-boiling-point working fluid channel 51. The primary evaporator 38 is used to evaporate the refrigerant under low pressure and absorb the heat of the surrounding air or water to achieve a cooling effect. The water collection heat exchanger 41 is located in the primary evaporator 38 and is used to transfer the cold energy in the primary evaporator 38 to the condensate collection module 4. The exhaust heat exchanger 414 is connected to the cooling tower 57 through a closed pipe.

[0024] The ground source heat pump module 1 also includes a geothermal coil 11, which serves as a water circulation carrier for absorbing geothermal energy; a water collector 12, which connects the water supply pipes of each heating pipe; a water channel solenoid valve 13, which controls the opening and closing of the water circulation channel; a water circulation pump 14, which transports the water medium by increasing the kinetic energy of the fluid; an evaporator 15, which realizes heat exchange of the geothermal source; a water distributor 16, which connects the return water pipes of each heating pipe; a refrigerant pipe 17, which contains the refrigerant; an expansion valve 18, which throttles and reduces pressure; a four-way reversing valve 110, which changes the direction of refrigerant gas flow; and a compressor 111, which compresses the low-temperature, low-pressure refrigerant vapor to increase the temperature and pressure of the refrigerant.

[0025] The geothermal coil 11 is connected to the water collector 12 and the water distributor 16. The water collector 12, the evaporator 15, and the water distributor 16 are connected in series. The water channel solenoid valve 13 and the water circulation pump 14 are installed on the connecting pipe between the water collector 12 and the evaporator 15. The evaporator 15, the four-way reversing valve 110, and the condenser 19 are connected in series. The refrigerant pipe 17 is the connecting pipe between the evaporator 15 and the condenser 19. The expansion valve 18 is installed on the expansion valve 18. The four-way reversing valve 110, the compressor 111, and the refrigeration heat exchanger 112 are connected in series. It should be noted that, in this embodiment, the material of the geothermal coil 11 includes, but is not limited to, high-density polyethylene pipe and polybutene pipe, and the water medium in the geothermal coil 11 includes, but is not limited to, water or antifreeze; the refrigerant includes, but is not limited to, R12, R22, R502, R134a, PFC-14, PFC-116 and PFC-218. like Figure 3 As shown in (a), during heating operation: the compressor 111 continuously extracts refrigerant vapor from the evaporator 15. After being compressed by the compressor 111, the refrigerant changes from low-temperature, low-pressure vapor to high-temperature, high-pressure vapor. The high-temperature, high-pressure refrigerant vapor condenses in the condenser 110, releasing a large amount of heat which is absorbed by the medium water, thereby achieving the purpose of heating. The high-pressure liquid refrigerant condensed by the condenser 110 is throttled and depressurized by the thermostatic expansion valve 18, transforming into low-pressure refrigerant liquid. The low-pressure refrigerant evaporates in the evaporator 15, absorbing a large amount of heat from the groundwater, thereby lowering the temperature of the groundwater. The low-pressure refrigerant vapor is extracted by the compressor 111, thus forming a heating cycle.

[0026] like Figure 3As shown in (b), during refrigeration operation: the four-way valve reverses the refrigerant flow direction, and the compressor 111 continuously extracts refrigerant vapor from the original condenser 110. After being compressed by the compressor 111, the refrigerant changes from low-temperature, low-pressure vapor to high-temperature, high-pressure vapor. The high-temperature, high-pressure refrigerant vapor condenses in the original evaporator 15, releasing a large amount of heat that is absorbed by the groundwater. The high-pressure liquid refrigerant condensed in the original evaporator 15 is throttled and depressurized by the expansion valve 18, transforming into low-pressure liquid refrigerant. The low-pressure refrigerant evaporates in the original condenser 110, absorbing a large amount of heat from the medium water, thereby lowering the temperature of the medium water and achieving the purpose of refrigeration. The low-pressure refrigerant vapor is extracted by the compressor 111, thus forming a refrigeration cycle.

[0027] A ground source heat pump system extracts heat from the ground in winter using ambient temperature soil or surface water / groundwater, and stores the building's heat back underground in summer, thus solving the problem of heating and air conditioning in both seasons. In summer, the unit transfers heat from the rooms to the ground to cool them and stores heat for winter use. In winter, the heat pump transfers heat from the soil to the rooms to heat them and stores cooling energy for summer use. The earth provides an excellent, free energy storage source, thus achieving seasonal energy conversion.

[0028] After being compressed by compressor 111, the refrigerant changes from low-temperature, low-pressure vapor to high-temperature, high-pressure vapor. Whether in heating or cooling operation, the heat contained in the high-temperature, high-pressure vapor is stored and used as needed.

[0029] Furthermore, in this invention, the heat storage module 2 also includes a heat storage solenoid valve 21 for opening and closing the heat storage pipeline, a heat storage circulation pump 22 for circulating the heat storage fluid medium, a two-position two-way solenoid valve 23 for controlling power generation, a two-position two-way solenoid valve 25 for controlling heat storage, a heat storage heat exchanger 26 for transferring heat to the hot water storage tank 27, a phase change energy storage tank 212 for storing the phase change energy storage medium, a primary heat exchanger 28 for transferring heat from the hot water storage tank 27 to the phase change energy storage tank 212, a heat transfer circulation pump 29 for circulating the heat transfer fluid medium, a heat transfer solenoid valve 210 for opening and closing the heat transfer fluid medium channel, a secondary heat exchanger 211 for transferring heat from the hot water storage tank 27 to the phase change energy storage tank 212, a hot water solenoid valve 213 for providing hot water to the outside, a full-process water processor 214 for processing external collected water, and an external collected water solenoid valve 215 for controlling the flow of external collected water into the hot water storage tank 27.

[0030] Furthermore, in this invention, the secondary heat exchanger 211 is connected to the primary heat exchanger 28 via a pipeline, and the secondary heat exchanger 211 is located inside the phase change energy storage tank 212, while the primary heat exchanger 28 is located inside the hot water storage tank 27. The heat transfer circulation pump 29 and the heat transfer solenoid valve 210 are located on the pipeline connecting the secondary heat exchanger 211 and the primary heat exchanger 28. The hot water solenoid valve 213 is located on the pipeline from the hot water storage tank 27 that supplies hot water to the outside. The entire water treatment unit 214 and the external... The water collecting solenoid valve 215 is located on the pipe connecting the hot water storage tank 27 to the external water collection point. The heat storage heat exchanger 26 is located inside the hot water storage tank 27. The heat storage heat exchanger 26 and the power generation heat exchanger 24 are connected by pipes. The two-way solenoid valve 23 and the heat storage two-position two-way solenoid valve 25 are located on the pipe connecting the heat storage heat exchanger 26 and the power generation heat exchanger 24. The refrigeration heat exchanger 112, the heat storage solenoid valve 21, the heat storage circulation pump 22 and the heat storage heat exchanger 26 and the power generation heat exchanger 24 are connected in parallel by pipes. It should also be noted that, in this embodiment, as Figure 5 As shown in (a), the two-position two-way solenoid valve 23 for generating electricity and the two-position two-way solenoid valve 25 for storing heat are opened at the same time, and the heat in the heat transfer fluid medium can be transferred to the heat exchanger 24 for generating electricity and the heat exchanger 26 for storing heat, respectively.

[0031] like Figure 5 As shown in (b), the two-position two-way solenoid valve 23 for generating electricity is closed and the two-position two-way solenoid valve 25 for storing heat is open. The heat in the heat transfer fluid medium cannot be transferred to the heat exchanger 24 for generating electricity, but can be transferred to the heat exchanger 26 for storing heat.

[0032] like Figure 5 As shown in (c), the two-position two-way solenoid valve 23 for generating electricity is open and the two-position two-way solenoid valve 25 for storing heat is closed. The heat in the heat transfer fluid medium can be transferred to the heat exchanger 24 for generating electricity, but cannot be transferred to the heat exchanger 26 for storing heat.

[0033] like Figure 5 As shown in (d), the two-position two-way solenoid valve 23 for power generation is closed and the two-position two-way solenoid valve 25 for heat storage is closed. The heat in the heat transfer fluid medium can neither be transferred to the heat exchanger 24 for power generation nor to the heat exchanger 26 for heat storage.

[0034] Phase change energy storage media (PCMs) are materials that store and release energy by absorbing and releasing heat during a phase change process. During a phase change, the medium maintains a constant temperature while absorbing or releasing a large amount of latent heat. This characteristic gives PCMs unique advantages in the field of energy storage. The application of PCMs helps reduce energy consumption and carbon emissions because they can store energy during periods of low demand and release it during periods of high demand, thereby balancing energy supply and demand and reducing dependence on peak energy sources.

[0035] When phase change energy storage media are combined with ground source heat pump systems, the following advantages can be achieved: Load balancing: Phase change energy storage media can store heat energy when demand is low and release heat energy when demand is high, thereby helping to balance the load of the heat pump system.

[0036] Improved efficiency: Under suitable conditions, phase change energy storage media can reduce the number of times the heat pump is switched on and off, thereby reducing energy loss and improving the overall energy efficiency of the system.

[0037] Reduce peak demand: During periods of peak electricity demand, phase change energy storage media can provide the necessary cooling or heating, thereby reducing the pressure on the power grid.

[0038] Increased system flexibility: The addition of phase change energy storage media can make ground source heat pump systems more adaptable to different climate conditions and user needs.

[0039] Figure 6 The diagram shows the AA section of the phase change energy storage tank 212, which exhibits a Hilbert fractal pattern.

[0040] Hilbert fractal curves are geometric figures that can be infinitely subdivided into their own patterns, belonging to the field of fractal geometry. In fluid phase transition processes, the concept of Hilbert fractal curves can be used to enhance the mixing efficiency of fluids at the microscale. Due to the self-similarity of fractal structures, they can provide a large interfacial area across multiple scales, which is beneficial for improving the efficiency of heat and mass transfer. In enhancing fluid phase transition processes, such as evaporation, condensation, or boiling, the internal structure of heat exchangers or reactors designed using Hilbert fractal curves can significantly increase the surface area of ​​the fluid as it passes through these microstructures, thereby accelerating the exchange of heat and mass. This design allows the fluid to reach phase transition conditions more quickly, thus improving the overall phase transition efficiency and energy conversion efficiency of the system. Furthermore, fractal structures can reduce fluid flow resistance and lower energy consumption. Therefore, applying fractal geometric concepts such as Hilbert fractal curves in the design of advanced heat exchange equipment and fluid handling systems can significantly improve the performance and efficiency of phase transition processes.

[0041] The fractal contour generation process of the fractal unit of the Hilbert fractal curve is as follows: (1) The fractal unit of the first-order Hilbert fractal curve divides the square into four equal smaller squares. Two broken line segments connect the centers of these four smaller squares in the order of lower left, upper left, upper right, and lower right, resulting in a shape resembling the letter "U". The number of line segments in the first-order construction is denoted as... E 1. Yes E 1=3=4 1 - 1; (2) Repeat the process of the first stage for each small square in the first stage, that is, divide each small square into four smaller squares and connect their centers with broken line segments. When connecting, it is necessary to pay attention to maintaining the continuity of the curve and not to let the curves intersect each other. When connecting, the direction of the broken line segments needs to be adjusted accordingly for adjacent small squares to ensure the continuity of the overall curve. The number of line segments in the second stage is denoted as . E 2. Yes E 2 = 3 × 4 + E 1=15=4 2 - 1; For the first n- Each small square in the second order repeats the process of the first order. n For each small square, the integer part is a positive integer less than or equal to 1. This involves dividing each small square into four smaller squares and connecting their centers with line segments. When connecting these segments, care must be taken to maintain the continuity of the curve and prevent the curves from intersecting. For adjacent small squares, the direction of the line segments needs to be adjusted accordingly to ensure the continuity of the overall curve. n- The number of first-order structural segments is denoted as E n-1 ,have E n-1 =3×4 n-1 + E n-2 =4 n-1 - 1; (3) Repeat the first n- The first-order process, the n The number of structural line segments is denoted as E n ,have E =3×4 n + E n-1 =4 n - 1.

[0042] like Figure 7 As shown, the pattern displayed is n =4th order Hilbert fractal curve.

[0043] Furthermore, the absorption refrigeration module 3 also includes an absorption refrigeration heat exchange medium circulation pump 32 for circulating and absorbing the refrigeration heat exchange medium, an absorption refrigeration heat exchange solenoid valve 33 for opening and closing the absorption refrigeration heat exchange medium channel, an absorption refrigeration secondary heat exchanger 34 for transferring heat from the hot water storage tank 27 to the absorption refrigeration module 3, a generator 35 for heating the working fluid of the solution to separate the refrigerant and absorbent, a conversion condenser 36 for releasing the heat of the refrigerant vapor to the outside to achieve a phase change between the gaseous and liquid states, a throttling valve 37 for controlling the refrigerant flow from the conversion condenser 36 to the primary evaporator 38 and reducing the refrigerant pressure in the process, and an absorber 39 for the absorbent to absorb low-pressure refrigerant vapor. A circulating working fluid pump 310 is used to pump the lean working fluid from the absorber 39 back to the generator; a preheating heat exchanger 311 is used to transfer heat from the lean working fluid to the cold rich working fluid that is about to enter the generator, thereby improving the thermal efficiency of the system; a solenoid valve 312 is used to control the flow of rich working fluid from the generator into the absorber 39; a first circulating spray pump 313 is used for sufficient heat absorption and spraying; a second circulating spray pump 314 is used for sufficient refrigerant absorption and spraying; a cooling tower 315 is used for cooling; a circulating cooling water pump 316 is used; a cooling water solenoid valve 317 is used to control the cooling water passage; a cooling heat exchanger 318 is used to cool the conversion condenser 36; and a working fluid cooling heat exchanger 319 is used to cool the absorber 39.

[0044] Furthermore, the primary absorption refrigeration heat exchanger 31 and the secondary absorption refrigeration heat exchanger 34 are connected in series via pipelines, and the secondary absorption refrigeration heat exchanger 34 is located inside the generator 35. The absorption refrigeration heat exchange medium circulation pump 32 and the absorption refrigeration heat exchange solenoid valve 33 are located on the pipeline between the primary absorption refrigeration heat exchanger 31 and the secondary absorption refrigeration heat exchanger 34. The generator 35 and the conversion condenser 36 are connected via pipelines. The cooling heat exchanger 318 is located inside the conversion condenser 36. The solution working fluid cooling heat exchanger 319 is located inside the absorber 39, and the cooling heat exchanger 318, the cooling water tower 315, and the cooling heat exchanger 319 are connected in series via pipelines. The circulating cooling water... Pump 316 and cooling water solenoid valve 317 are located on the connecting pipe between cooling tower 315 and cooling heat exchanger 318. Throttling valve 37 is located on the connecting pipe between conversion condenser 36 and primary evaporator 38. First circulating spray pump 313 is located on the circulating pipe of primary evaporator 38. Second circulating spray pump 314 is located on the circulating pipe of absorber 39. Generator 35 and absorber 39 are connected in series through two pipes. Preheating heat exchanger 311 is connected to the two pipes connecting generator 35 and absorber 39. Circulating solution working fluid pump 310 and solution working fluid solenoid valve 312 are respectively located on the two pipes connecting generator 35 and absorber 39.

[0045] It should be noted that, in this embodiment, absorption refrigeration is a refrigeration technology driven by thermal energy. The following are the basic steps of the absorption refrigeration process: (1) Heating and separation: In the generator 35, the absorption refrigeration secondary heat exchanger 34 heats the weak liquid, causing the refrigerant to evaporate, thereby producing a liquid-rich and gaseous refrigerant. This step is the main link in the energy exchange between the absorption refrigeration module 3 and the outside world.

[0046] (2) Condensation and liquefaction: The evaporated gaseous refrigerant enters the conversion condenser 36, where it releases heat and liquefies. The liquid refrigerant is then stored in a receiver of the conversion condenser 36.

[0047] (3) Evaporation and refrigeration: The liquid refrigerant flows from the receiver to the primary evaporator 38 after passing through the throttling valve 37. In the primary evaporator 38, the refrigerant evaporates under low pressure and absorbs heat from the surrounding air or liquid, thereby producing a refrigeration effect.

[0048] (4) Solution circulation: In absorber 39, refrigerant vapor is released from primary evaporator 38 and absorbed by absorbent such as lithium bromide aqueous solution in absorber 39. This process is exothermic, therefore absorber 39 needs to dissipate heat. The dilute solution after absorption is pumped to generator 35, where it is heated and the refrigerant and absorbent are separated. The refrigerant vapor enters conversion condenser 36 and condenses into liquid, while the concentrated absorbent solution returns to absorber 39 to absorb new refrigerant vapor again.

[0049] (5) Cyclic repetition: The weak liquid in the absorber 39 absorbs the refrigerant gas released from the primary evaporator 38 again, becomes rich liquid, and then the above process is repeated to achieve continuous cooling.

[0050] Some commonly used refrigerant and absorbent combinations: Water-Lithium Bromide (H₂O-LiBr) – Water is used as the refrigerant, and lithium bromide as the absorbent. This is one of the most commonly used combinations, especially in large commercial and industrial refrigeration systems. Water-lithium bromide systems are typically used in absorption chillers for air conditioning and industrial process cooling.

[0051] Ammonia-water (NH3-H2O) – Ammonia is used as the refrigerant, and water as the absorbent. This combination is common in agricultural and industrial refrigeration, especially in applications requiring lower temperatures.

[0052] The advantage of absorption refrigeration is that it can use waste heat or renewable energy as power, making it more economical and environmentally friendly in certain applications, such as industrial waste heat recovery or solar energy utilization.

[0053] Furthermore, the condensate collection module 4 also includes a water collection circulation pipe 42 containing a water collection circulation medium, a water collection circulation solenoid valve 43 for opening and closing the water collection circulation pipe, a water collection circulation pump 44 for circulating the water collection circulation medium, a compensation tank 45 for compensating the water collection circulation medium, an opening and closing solenoid valve 46 for opening and closing the compensation tank 45, a condensate collector 47, a water collection bucket 48, a water collection full-process water processor 49, a water collection tank solenoid valve 410, a water collection tank pump 411, a water collection tank 412, and an external water collection solenoid valve 413. Multiple condensate collectors 47 are connected in series via pipes. The water heat exchanger 41 is connected to the condensate collector 47 via pipes, and the condensate collector 47 via pipes are connected in parallel to a compensation tank 45. The opening and closing solenoid valve 46 is located on the pipes between the compensation tank 45 and the condensate collector 47. The water circulation solenoid valve 43 and the water circulation pump 44 are located on the pipes between the water heat exchanger 41 and the condensate collector 47. Multiple water collection tanks 48 are connected in series via pipes. The pipes connecting the water heat exchanger 41 and the AC heat exchanger 411 are connected in parallel to the pipes of the water collection tanks 48. The water collection tank 412 is connected in parallel to the pipes of the water collection tanks 48 via pipes. The external water supply solenoid valve 413 is located on the external water supply pipe of the water collection tank 412. The water collection full-process water processor 49, the water collection tank solenoid valve 410, and the water collection tank pump 411 are located on the pipes connecting the water collection tank 412 and the water collection tanks 48. It should be noted that, in this embodiment, the condensate collection process includes the following basic steps: (1) Condensation formation: On the cooling surface of the water collector condenser, water vapor in the air condenses into water droplets due to the drop in temperature. This process depends on the surface temperature being lower than the dew point temperature in the air.

[0054] (2) Water droplet growth: Over time, the water droplets formed by condensation will gradually grow until they become large enough due to their own weight that they can no longer be supported by surface tension.

[0055] (3) Gravity: When the water droplet becomes large enough, gravity will begin to play a dominant role, and the water droplet will begin to slide down the condensed surface.

[0056] (4) Water droplet aggregation: As the water droplets slide down, they may meet and merge with other water droplets to form larger water droplets.

[0057] (5) Water droplet shedding: Eventually, these increasingly larger water droplets will detach from the condensed surface under the influence of gravity.

[0058] (6) Water collection and discharge: The detached water droplets will be collected by a collection tank or drainage system and guided to an appropriate discharge point or reuse system.

[0059] Furthermore, in this invention, the turbine power generation module 5 also includes a low-boiling-point working fluid circulation pump 52, a turbine 53, a generator 54, a working fluid condenser 55, a cooling circulation pump 56, and a recirculation circulation pump 58. The generator 54 is connected to the turbine 53. The low-boiling-point working fluid channel 51 is a pipeline connecting the turbine 53, the power generation heat exchanger 24, and the working fluid condenser 55 in series. The low-boiling-point working fluid circulation pump 52 is located on the low-boiling-point working fluid channel 51. The cooling circulation pump 56 is located on the closed pipeline connecting the cooling tower 57 and the working fluid condenser 55. The return cooling circulation pump 58 is located on the closed pipeline connecting the cooling tower 57 and the exhaust heat exchanger 414. It should be noted that in this embodiment, the recirculation pump 58 can recover the waste heat energy after the condensate is cooled, and then use it to cool the cooling tower 57 through the waste heat exchanger 414. The principle of turbine power generation refers to the process of converting the kinetic energy of a fluid into mechanical energy through a turbine 53, and then further converting it into electrical energy.

[0060] Turbine power generation using low-boiling-point working fluids typically refers to a closed-loop system that uses low-boiling-point working fluids such as ammonia, Freon, and butane as the medium to transfer energy. This system is called an organic Rankine cycle power generation system and is particularly suitable for low-temperature heat sources such as geothermal, solar, and waste heat recovery. The basic steps of the organic Rankine cycle are as follows: Heating: The working fluid is heated by external ground source heat in the power generation heat exchanger 24, usually by absorbing heat from the heat source through a heat exchange process.

[0061] Evaporation: The working fluid, after being heated, increases in temperature and begins to evaporate. Because the working fluid is a low-boiling-point medium, it can evaporate into high-temperature, high-pressure steam at a relatively low temperature.

[0062] Expansion: High-temperature and high-pressure steam enters the turbine 53, where it expands and drives the turbine blades to rotate, thereby converting the pressure energy and thermal energy of the steam into mechanical energy.

[0063] Power generation: Turbine 53 is connected to generator 54. The rotation of turbine 53 drives generator 54 to rotate, converting mechanical energy into electrical energy.

[0064] Condensation: The expanded steam enters the working fluid condenser 55, where it is condensed into a liquid state by a cooling medium such as cooling water or air, releasing heat.

[0065] Circulation: The liquid working fluid is pumped back to the electric heat exchanger 24 by the low-boiling-point working fluid circulation pump 52 to restart the heating and evaporation process, completing one cycle; Throughout the process, using a low-boiling-point medium as the working fluid allows the system to operate at a lower heat source temperature, improving its thermal efficiency and enabling it to function within a wider temperature range. This power generation method is environmentally friendly, effectively utilizing renewable energy and waste heat resources.

[0066] Furthermore, in this invention, the user terminal 6 also includes an air conditioning unit 62, a first solenoid valve 63, a circulating solution pump 64, a second solenoid valve 65, a third solenoid valve 66, and a compensation solution tank 67; the air conditioning unit 62 is connected in parallel with the underfloor heating coil 61; the first solenoid valve 63 and the circulating solution pump 64 are located on the connecting pipe between the underfloor heating coil 61 and the condenser 19; the second solenoid valve 65 is located on the connecting pipe between the underfloor heating coil 61 and the air conditioning unit 62; the compensation solution tank 67 is connected to the connecting pipe between the underfloor heating coil 61 and the condenser 19; and the third solenoid valve 66 is located on the connecting pipe between the compensation solution tank 67 and the connecting pipe between the underfloor heating coil 61 and the condenser 19.

[0067] Phase change thermal energy storage (PCE) is a method of energy storage that utilizes the property of materials to absorb and release heat during phase changes. The main advantages of this method are its high energy storage density and its ability to release heat at relatively constant temperatures. PCE materials absorb or release a large amount of latent heat when transitioning from a solid to a liquid state, or vice versa. This makes PCE systems highly effective in temperature control, especially suitable for applications requiring precise temperature control.

[0068] Fractal-enhanced energy storage technology is a method that utilizes fractal theory to optimize energy storage systems. Due to their unique self-similarity and large surface area to volume ratio, fractal structures can create more heat transfer paths within energy storage materials, thereby enhancing the thermal conductivity of these materials. The advantages of this technology include improved thermal response speed and thermal efficiency of energy storage systems, while also potentially reducing the size and weight of the systems to some extent.

[0069] By combining the advantages of phase change thermal storage and fractal enhanced energy storage, we can obtain a high-efficiency, high-density, and fast-response energy storage system. This system can better adapt to the volatility of renewable energy sources, improve energy utilization efficiency, and is of great significance for promoting energy conservation and reducing environmental pollution.

[0070] In modern refrigeration systems, absorption chillers can be designed to collect condensate and use it for other purposes, such as irrigation, cooling tower makeup water, or direct discharge, reducing reliance on tap water resources.

[0071] The advantages of combining condensation and condensation water collection mainly include: Conserving water resources: By collecting condensate, we can reduce our dependence on tap water or other water sources. This practice can significantly reduce water consumption, especially in water-scarce areas.

[0072] Environmental benefits: Reusing condensate helps reduce water waste and also reduces the environmental burden caused by additional water treatment and supply.

[0073] Economic benefits: Reduced demand for tap water saves businesses and households on water bills. Furthermore, the collected condensate can be used as makeup water for air conditioning systems, reducing additional operating costs.

[0074] Improving energy efficiency: In some cases, condensed water can be used as a cooling medium to help improve the energy efficiency of the system because it is usually lower than the ambient temperature and can save energy when used for cooling.

[0075] This involves using geothermal water to indirectly heat certain "low-boiling-point substances" to drive a steam turbine for power generation. For example, water boils at approximately 100°C under normal pressure, while some substances, such as ethane chloride and Freon, have boiling points of 12.4°C and -29.8°C respectively under normal pressure. These substances are called "low-boiling-point substances." Based on their boiling characteristics at low temperatures, they can be used as intermediate media in geothermal power generation.

[0076] The application of low-boiling-point substances in turbine power generation is typically found in the so-called organic Rankine cycle. The organic Rankine cycle is a thermodynamic cycle that uses a low-boiling-point organic working fluid instead of water / steam to convert thermal energy into mechanical energy at lower temperatures. This cycle is particularly suitable for low-temperature heat sources such as geothermal, solar thermal, and industrial waste heat recovery. In the organic Rankine cycle, the low-boiling-point substance absorbs heat in an evaporator and evaporates into a high-temperature, high-pressure gas. This gas then enters the turbine, driving the impeller to rotate and generating mechanical work. The mechanical work of the turbine is transmitted to the generator via a coupling to produce electrical energy. After releasing heat, the gas condenses into a liquid in a condenser and is then pumped back to the evaporator, completing the cycle. In general, the application of low-boiling-point substances in turbine power generation can improve the thermal efficiency of the system, especially when using low-grade heat energy for power generation.

[0077] This invention utilizes ground source heat pumps as a highly efficient heating and cooling technology, which, when combined with a combined hydropower system, offers multiple advantages: High energy efficiency: Ground source heat pumps utilize the constant temperature of the underground environment, absorbing heat from the ground in winter and releasing heat back to the ground in summer. Their energy efficiency ratio (EER) is typically between 3 and 4, far exceeding that of traditional resistance heating or ordinary air conditioning systems. Combined with a combined hydropower system, it can provide efficient heating and cooling in different seasons, reducing energy consumption.

[0078] Environmentally friendly: Ground source heat pump systems do not burn fuel and do not directly emit carbon dioxide during operation, making them a clean energy utilization method. When combined with combined hydropower systems, especially when the hydropower system uses renewable energy, the carbon footprint of the entire system is greatly reduced.

[0079] Space saving: Traditional heating and cooling equipment often requires a separate machine room and a lot of space to accommodate them, while the underground pipes of the ground source heat pump system can effectively utilize land space and reduce the occupation of land resources.

[0080] Stable and reliable: Because its heat source comes from underground, the ground source heat pump system offers highly stable heating and cooling performance, unaffected by external climate changes. Combined with a combined hydropower system, it can provide an even more stable and reliable energy supply.

[0081] Long lifespan: The underground part of a ground source heat pump system (such as buried pipes) can be used for more than 50 years, and the service life of the indoor unit also far exceeds that of traditional air conditioning systems. This means that the cost of maintenance and replacement is relatively low throughout the entire service life.

[0082] Low operating costs: Although the initial investment in ground source heat pumps is relatively high, their high energy efficiency and low operating costs can save users a significant amount of electricity expenses in the long run. Combined with combined hydropower systems, energy use can be further optimized, reducing overall operating costs.

[0083] Multifunctionality: Ground source heat pumps can not only provide heating and cooling, but also domestic hot water. They are multi-functional and meet the diverse needs of users. Ground source heat pumps are integrated into hydropower systems, which have significant advantages in improving energy efficiency, reducing environmental impact, ensuring energy supply stability and economy.

[0084] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A ground-source combined cooling, heating, and power system, characterized in that, include: The ground source heat pump module (1) is used to provide the energy source from the ground, including a condenser (19) and a refrigeration heat exchanger (112). The thermal energy storage module (2) is used to store thermal energy and release it as needed; it includes a hot water storage tank (27) and a power generation heat exchanger (24) for generating electricity. Absorption refrigeration module (3) is used to prepare a low-temperature cold source, including an absorption refrigeration primary heat exchanger (31) and a primary evaporator (38). The condensate collection module (4) is used to collect moisture in the air and includes a water collection heat exchanger (41) and a waste heat exchanger (414). The turbine power generation module (5) is used to convert the kinetic energy of the fluid into mechanical energy, and then further into electrical energy. It includes a low-boiling-point working fluid channel (51) and a cooling tower (57). The user terminal (6) is used to utilize energy on demand, including underfloor heating coils (61). The underfloor heating coil (61) is connected to the condenser (19) pipe. The refrigeration heat exchanger (112) is connected to the heat storage module (2) pipe and is used to exchange the heat of the compressed high-temperature refrigerant into the absorption refrigeration module (3). The absorption refrigeration primary heat exchanger (31) is located in the hot water storage tank (27) and is used to transfer the heat in the hot water storage tank (27) to the absorption refrigeration module (3). The power generation heat exchanger (24) for generating electricity is connected to the low-boiling-point working fluid channel (51). The primary evaporator (38) is used to evaporate the refrigerant under low pressure and absorb heat from the surrounding air or water to achieve a cooling effect. The water heat exchanger (41) is located inside the primary evaporator (38) and is used to transfer the cooling capacity in the primary evaporator (38) to the condensate collection module (4). The waste heat exchanger (414) is connected to the cooling tower (57) through a closed pipe. The refrigeration heat exchanger (112) is connected to the heat storage heat exchanger (26) and the power generation heat exchanger (24) by pipe.

2. The ground-source combined cooling, heating, and power system according to claim 1, characterized in that, The ground source heat pump module (1) also includes a geothermal coil (11) used as a water circulation carrier for absorbing geothermal energy, a water collector (12) for connecting the water supply pipes of each heating pipe, a water channel solenoid valve (13) for controlling the opening and closing of the water circulation channel, a water circulation pump (14) for transporting the water medium by increasing the kinetic energy of the fluid, an evaporator (15) for geothermal heat exchange, a water distributor (16) for connecting the return pipes of each heating pipe, a refrigerant pipe (17) for containing the refrigerant, an expansion valve (18) for throttling and reducing pressure, a four-way valve (110) for changing the direction of the refrigerant gas flow, and a device for compressing the low-temperature, low-pressure refrigerant vapor to increase the refrigerant temperature and pressure. The compressor (111) is connected to the geothermal coil (11) and the water collector (12) and the water distributor (16) pipes. The water collector (12), the evaporator (15) and the water distributor (16) pipes are connected in series. The water channel solenoid valve (13) and the water circulation pump (14) are installed on the connecting pipe of the water collector (12) and the evaporator (15). The evaporator (15), the four-way reversing valve (110) and the condenser (19) pipes are connected in series. The refrigerant pipe (17) is the connecting pipe of the evaporator (15) and the condenser (19). The expansion valve (18) is installed on the expansion valve (18). The four-way reversing valve (110), the compressor (111) and the refrigeration heat exchanger (112) pipes are connected in series.

3. A ground-source combined cooling, heating, and power system according to claim 1, characterized in that, The heat storage module (2) also includes a heat storage solenoid valve (21) for opening and closing the heat storage pipeline, a heat storage circulation pump (22) for circulating the heat storage fluid medium, a two-position two-way solenoid valve (23) for controlling power generation, a two-position two-way solenoid valve (25) for controlling heat storage, a heat storage heat exchanger (26) for transferring heat to the hot water storage tank (27), a phase change energy storage tank (212) for storing the phase change energy storage medium, and a primary heat exchanger (28) for transferring heat from the hot water storage tank (27) to the phase change energy storage tank (212). A heat transfer circulating pump (29) for circulating the heat transfer fluid medium, a heat transfer solenoid valve (210) for opening and closing the heat transfer fluid medium channel, a secondary heat exchanger (211) for transferring heat from the hot water storage tank (27) to the phase change energy storage tank (212), a hot water solenoid valve (213) for providing hot water to the outside, a full-process water processor (214) for treating external water collection, and an external water collection solenoid valve (215) for controlling the flow of external water collection into the hot water storage tank (27); the secondary heat exchanger (211) and the primary heat exchanger (212) are connected. 8) The pipelines are connected, and the secondary heat exchanger (211) is located inside the phase change energy storage tank (212), the primary heat exchanger (28) is located inside the hot water storage tank (27), the heat transfer circulation pump (29) and the heat transfer solenoid valve (210) are located on the connecting pipeline between the secondary heat exchanger (211) and the primary heat exchanger (28), the hot water solenoid valve (213) is located on the pipeline from the hot water storage tank (27) to the outside for supplying hot water, and the whole-process water processor (214) and the external water collection solenoid valve (215) are located in the hot water storage tank (212). 7) On the pipe connecting to the external water collection, the heat storage heat exchanger (26) is located inside the hot water storage tank (27). The heat storage heat exchanger (26) and the power generation heat exchanger (24) are connected by pipes. The two-way solenoid valve (23) and the heat storage two-position two-way solenoid valve (25) are located on the pipe connecting the heat storage heat exchanger (26) and the power generation heat exchanger (24). The refrigeration heat exchanger (112), the heat storage solenoid valve (21), the heat storage circulation pump (22) are connected in parallel with the heat storage heat exchanger (26) and the power generation heat exchanger (24) pipes.

4. A ground-source combined cooling, heating, and power system according to claim 3, characterized in that, The cross-section of the phase change energy storage tank (212) presents an n-order Hilbert fractal pattern, where n is a positive integer greater than or equal to 2.

5. A ground-source combined cooling, heating, and power system according to claim 1, characterized in that, The absorption refrigeration module (3) also includes an absorption refrigeration heat exchange medium circulation pump (32) for circulating the absorption refrigeration heat exchange medium, an absorption refrigeration heat exchange solenoid valve (33) for opening and closing the absorption refrigeration heat exchange medium channel, an absorption refrigeration secondary heat exchanger (34) for transferring heat from the hot water storage tank (27) to the absorption refrigeration module (3), a generator (35) for heating the working medium of the solution to separate the refrigerant and absorbent, a conversion condenser (36) for releasing the heat of the refrigerant vapor to the outside to achieve a phase change between the gaseous and liquid states, a throttling valve (37) for controlling the refrigerant flow from the conversion condenser (36) to the primary evaporator (38) and reducing the refrigerant pressure in the process, and an absorber (39) for the absorbent to absorb low-pressure refrigerant vapor. The system includes a low-concentration working fluid pump (310) that pumps lean liquid back to the generator, a preheating heat exchanger (311) that transfers heat from the lean liquid to the cold rich liquid about to enter the generator to improve the thermal efficiency of the system, a working fluid solenoid valve (312) that controls the entry of the rich liquid into the absorber (39) from the generator, a first circulating spray pump (313) that sprays for sufficient heat absorption, a second circulating spray pump (314) that sprays for sufficient refrigerant absorption, a cooling tower (315) for cooling, a circulating cooling water pump (316), a cooling water solenoid valve (317) for controlling the cooling water passage, a cooling heat exchanger (318) for cooling the conversion condenser (36), and a working fluid cooling heat exchanger (319) for cooling the absorber (39).The primary heat exchanger (31) and the secondary heat exchanger (34) of absorption refrigeration are connected in series, and the secondary heat exchanger (34) is located inside the generator (35). The circulating pump (32) and the solenoid valve (33) of absorption refrigeration are located on the pipeline between the primary heat exchanger (31) and the secondary heat exchanger (34). The generator (35) and the conversion condenser (36) are connected in series. The cooling heat exchanger (318) is located inside the conversion condenser (36). The solution working fluid cooling heat exchanger (319) is located inside the absorber (39). The cooling heat exchanger (318), the cooling tower (315), and the cooling heat exchanger (319) are connected in series. The circulating cooling water pump (316) The cooling water solenoid valve (317) is located on the connecting pipe between the cooling water tower (315) and the cooling heat exchanger (318). The throttle valve (37) is located on the connecting pipe between the conversion condenser (36) and the primary evaporator (38). The first circulating spray pump (313) is located on the circulating pipe of the primary evaporator (38). The second circulating spray pump (314) is located on the circulating pipe of the absorber (39). The generator (35) and the absorber (39) are connected in series through two pipes. The preheating heat exchanger (311) is connected to the two pipes connecting the generator (35) and the absorber (39). The circulating solution working fluid pump (310) and the solution working fluid solenoid valve (312) are located on the two pipes connecting the generator (35) and the absorber (39), respectively.

6. A ground-source combined cooling, heating, and power system according to claim 1, characterized in that, The condensate collection module (4) also includes a collection circulation pipe (42) containing a collection circulation medium, a collection circulation solenoid valve (43) for opening and closing the collection circulation pipe, a collection circulation pump (44) for circulating the collection circulation medium, a compensation tank (45) for compensating the collection circulation medium, an opening and closing solenoid valve (46) for opening and closing the compensation tank (45), a condensate collector (47), a collection tank (48), a water processor (49), a collection tank solenoid valve (410), a collection tank pump (411), a collection tank (412), and an external water collection solenoid valve (413); multiple condensate collectors (47) are connected in series, the water heat exchanger (41) is connected to the condensate collector (47) pipes, and the condensate collector (47) pipes are connected in parallel to the compensation tank (45). The opening and closing solenoid valve (46) is located on the pipeline between the compensation tank (45) and the condensate collector (47). The water collection circulation solenoid valve (43) and the water collection circulation pump (44) are located on the pipeline between the water collection heat exchanger (41) and the condensate collector (47). Multiple water collection tanks (48) are connected in series through pipelines. The water collection heat exchanger (41) and the AC heat exchanger (411) are connected in parallel with the water collection tank (48) pipeline. The water collection tank (412) is connected in parallel with the water collection tank (48) pipeline through a pipeline. The external water collection solenoid valve (413) is located on the external water collection pipeline of the water collection tank (412). The water collection full-process water processor (49), the water collection tank solenoid valve (410), and the water collection tank pump (411) are located on the pipeline connecting the water collection tank (412) and the water collection tank (48).

7. A ground-source combined cooling, heating, and power system according to claim 1, characterized in that, The turbine power generation module (5) also includes a low-boiling-point working fluid circulation pump (52), a turbine (53), a generator (54), a working fluid condenser (55), a cooling circulation pump (56), and a return cooling circulation pump (58). The generator (54) is connected to the turbine (53). The low-boiling-point working fluid channel (51) is a pipeline connecting the turbine (53), the power generation heat exchanger (24), and the working fluid condenser (55) in series. The low-boiling-point working fluid circulation pump (52) is located on the low-boiling-point working fluid channel (51). The cooling circulation pump (56) is located on the closed pipeline connecting the cooling tower (57) and the working fluid condenser (55). The return cooling circulation pump (58) is located on the closed pipeline connecting the cooling tower (57) and the waste heat exchanger (414).

8. A ground-source combined cooling, heating, and power system according to claim 1, characterized in that, The user terminal (6) also includes an air conditioning unit (62), a first solenoid valve (63), a circulating solution pump (64), a second solenoid valve (65), a third solenoid valve (66), and a compensation solution tank (67); the air conditioning unit (62) is connected in parallel with the floor heating coil (61), the first solenoid valve (63) and the circulating solution pump (64) are located on the connecting pipe between the floor heating coil (61) and the condenser (19), the second solenoid valve (65) is located on the connecting pipe between the floor heating coil (61) and the air conditioning unit (62), the compensation solution tank (67) and the connecting pipe between the floor heating coil (61) and the condenser (19) are connected, and the third solenoid valve (66) is located on the connecting pipe between the compensation solution tank (67) and the floor heating coil (61) and the condenser (19).

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