CN114646085A - Geothermal source-air source comprehensive heat energy utilization system - Google Patents
Geothermal source-air source comprehensive heat energy utilization system Download PDFInfo
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- CN114646085A CN114646085A CN202210242182.8A CN202210242182A CN114646085A CN 114646085 A CN114646085 A CN 114646085A CN 202210242182 A CN202210242182 A CN 202210242182A CN 114646085 A CN114646085 A CN 114646085A
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- 239000012530 fluid Substances 0.000 claims abstract description 55
- 238000004891 communication Methods 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims description 47
- 238000004378 air conditioning Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
- F24D3/082—Hot water storage tanks specially adapted therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
- F24D3/1066—Distributors for heating liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
- F24T10/15—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/11—Geothermal energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/32—Heat sources or energy sources involving multiple heat sources in combination or as alternative heat sources
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Development (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to a geothermal source-air source comprehensive heat energy utilization system, which comprises: at least one geothermal well; the air source is provided with an air source cold supply valve and an air source cold return valve; the first water source unit comprises a first evaporator and a first condenser, wherein a first water inlet valve and a first water return valve are arranged at the first evaporator; a third water inlet valve and a third water return valve are arranged at the first condenser; the second water source unit comprises a second evaporator and a second condenser, and a second water inlet valve and a second water return valve are arranged at the second evaporator; a sixth water inlet valve and a sixth water return valve are arranged at the second condenser, and the sixth water inlet valve, the second condenser and the sixth water return valve are sequentially in fluid communication to form a loop for circulating domestic water; the heat exchanger is provided with a fifth water inlet valve, a fifth water return valve, a seventh water inlet valve and a seventh water return valve, and the at least one geothermal well, the fifth water inlet valve, the heat exchanger and the fifth water return valve are sequentially communicated in a fluid mode.
Description
Technical Field
The invention relates to the technical field of heat energy utilization, in particular to a geothermal source-air source comprehensive heat energy utilization system.
Background
At present, the energy problem has become the key point of national development, the use of fossil energy in large quantity can cause serious environmental pollution, and the geothermal energy is increasingly concerned as a clean new energy. The intermediate-deep geothermal energy has the characteristics of stable thermal energy, quick recovery and the like, and is particularly suitable for a heat source of a thermal energy utilization system.
Disclosure of Invention
In view of the above-mentioned drawbacks associated with the heavy use of fossil energy, it is an object of the present invention to provide a geothermal source-air source integrated heat energy utilization system, which can utilize geothermal source and air source to supply heat and cold to the air conditioning side of the user and to heat the domestic water.
In order to achieve the above purpose, the invention provides the following technical scheme: a geothermal source-air source integrated heat energy utilization system, which can supply heat, cool and heat domestic water for a user air-conditioning side, comprises: at least one geothermal well; the air source, the air source cooling supply valve, the user air conditioning side and the air source cooling return valve are sequentially in fluid communication and form a loop for circulating water; the system comprises a first water source unit, a second water source unit and a control unit, wherein the first water source unit comprises a first evaporator and a first condenser, a first water inlet valve and a first water return valve are arranged at the first evaporator, and the at least one geothermal well, the first water inlet valve, the first evaporator and the first water return valve are sequentially in fluid communication and form a loop for circulating water; the air source, the first water inlet valve, the first evaporator and the first water return valve are sequentially in fluid communication and form a loop for circulating water; a third water inlet valve and a third water return valve are arranged at the first condenser, and the user air conditioner side, the third water inlet valve, the first condenser and the third water return valve are sequentially in fluid communication and form a loop for circulating water; the second water source unit comprises a second evaporator and a second condenser, a second water inlet valve and a second water return valve are arranged at the second evaporator, and the at least one geothermal well, the second water inlet valve, the second evaporator and the second water return valve are sequentially in fluid communication and form a loop for circulating and flowing water; the air source, the second water inlet valve, the second evaporator and the second water return valve are sequentially in fluid communication and form a loop for circulating water; a sixth water inlet valve and a sixth water return valve are arranged at the second condenser, and the sixth water inlet valve, the second condenser and the sixth water return valve are sequentially in fluid communication and can be used for domestic water to flow; the heat exchanger is provided with a fifth water inlet valve, a fifth water return valve, a seventh water inlet valve and a seventh water return valve, and the at least one geothermal well, the fifth water inlet valve, the heat exchanger and the fifth water return valve are sequentially in fluid communication and form a loop for circulating and flowing water; the seventh water inlet valve, the heat exchanger and the seventh water return valve are sequentially in fluid communication and can be used for domestic water to flow.
In the above technical solution, preferably, a fourth water inlet valve and a fourth water return valve are further disposed at the first evaporator, and the user air conditioning side, the fourth water inlet valve, the first evaporator and the fourth water return valve are sequentially in fluid communication and form a loop through which water circularly flows. Still further preferably, the cooling tower further comprises a cooling tower, a cooling tower water inlet valve and a cooling tower water return valve are arranged at the cooling tower, and the second condenser, the cooling tower water inlet valve, the cooling tower and the cooling tower water return valve are sequentially in fluid communication and form a loop for circulating and flowing water.
In the above technical solution, preferably, the system further includes a water replenishing system, and the water replenishing system includes a well side water replenishing pump in fluid communication with the at least one geothermal well and a user side water replenishing pump in fluid communication with the user air conditioner side.
In the above technical solution, preferably, the domestic water supply device further comprises a water tank for storing domestic water, and the water tank is simultaneously in fluid communication with the sixth water inlet valve, the sixth water return valve, the seventh water inlet valve and the seventh water return valve.
In the above technical solution, preferably, a water collector is disposed between the at least one geothermal well and the first water inlet valve, and the water collector is in fluid communication with the air source and the second water inlet valve.
In the above preferred embodiment, it is further preferred that a first mixing pump for providing fluid flow power is disposed between the water collector and the first water inlet valve, and a second mixing pump for providing fluid flow power is disposed between the water collector and the second water inlet valve.
In the above preferred embodiment, it is further preferred that an air source water inlet valve is disposed between the water collector and the air source.
In the above technical solution, preferably, a water separator is disposed between the at least one geothermal well and the first water return valve, and the water separator is in fluid communication with the air source and the second water return valve.
In the above preferred embodiment, it is further preferred that the water separator (at least one geothermal well is provided with a geothermal circulating pump therebetween, and an air source circulating pump is provided between the water separator and the air source.
Compared with the prior art, the heat energy utilization system provided by the invention can utilize a geothermal source as a main heat source and is assisted by an air source, so that the heating of the air conditioner side of a user in winter is realized, the cooling and the domestic water heating of the air conditioner side of the user in summer are realized, and the multi-season and multi-function operation of the system is realized, thereby reducing the application of fossil fuels and protecting the environment.
Drawings
FIG. 1 is a schematic diagram of a geothermal source-air source integrated thermal energy utilization system provided by the invention.
The labels in the figure are:
100. a geothermal source-air source comprehensive heat energy utilization system;
1. a geothermal well; 11. a water collector; 12. a first mixing pump; 13. a first water inlet valve; 14. a first water return valve; 15. a second mixing pump; 16. a second water inlet valve; 17. a second water return valve; 18. a water separator; 19. a geothermal circulating pump;
2. an air source; 21. an air source circulation pump; 22. an air source cold supply valve; 23. a cooling main valve; 24. a main return cold valve; 25. an air source recooling valve; 26. an air source water inlet valve; 27. an air source water return valve;
3. a first water source unit; 31. a first evaporator; 32. a first condenser; 33. a third water inlet valve; 34. a third water return valve; 35. an air-conditioning side circulation pump; 36. a fourth water inlet valve; 37. a fourth water return valve;
4. a cooling tower; 41. a cooling tower water inlet valve; 42. a cooling tower return valve; 43. a cooling tower circulation pump;
5. a second water source unit; 51. a second evaporator; 52. a second condenser; 53. a sixth inlet valve; 54. a sixth water return valve;
6. a heat exchanger; 61. a fifth water inlet valve; 62. a fifth water return valve; 63. a seventh water inlet valve; 64. a seventh water return valve;
7. a water tank; 71. a water side circulation pump;
81. a well side water replenishing pump; 82. a user side water replenishing pump.
Detailed Description
To explain technical contents, structural features, achieved objects and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.
In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate.
Fig. 1 shows a geothermal source-air source integrated thermal energy utilization system 100 (hereinafter referred to as a thermal energy utilization system 100) provided by the present invention, wherein the thermal energy utilization system 100 can respectively supply heat and cool to the air-conditioning side of a user in winter and summer and can heat domestic water of the user. The thermal energy utilization system 100 comprises a geothermal well 1 as a geothermal source, an air source 2 as an auxiliary heat source, a first water source unit 3, a cooling tower 4 in fluid communication with the first water source unit 3, a second water source unit 5, a heat exchanger 6, a water tank 7 for storing domestic water, and a water replenishing system capable of replenishing water to the geothermal well 1 and the air source 2. The water charging system includes a well side water charging pump 81 capable of charging water into the geothermal well 1 and a user side water charging pump 82 capable of charging water into the user air conditioner side.
In the embodiment, three geothermal wells 1 are connected in parallel to serve as main heat sources of the heat energy utilization system 100, and the geothermal wells 1 are formed by drilling underground by a large-scale drilling machine. Each geothermal well 1 extends downwards from the ground by more than 2400 m to reach a middle-deep underground rock stratum, and the bottom of each geothermal well 1 can provide a heat source with the temperature of more than 70 ℃. The thermal energy utilization system 100 utilizes geothermal sources using closed water cycles to achieve the effect of extracting heat without extracting water, minimizing environmental impact. In other embodiments, the number of geothermal wells may be determined based on the actual thermal load of the thermal energy utilization system.
The first water source unit 3 includes a first evaporator 31, a first condenser 32, and a heat pump (not shown). The first water source unit 3 transfers the heat absorbed by the first evaporator 31 to the first condenser 32 and discharges the heat to the outside by utilizing the processes of heat absorption of the heat exchange medium in the evaporator 31, heat pump compression, heat release of the condenser 32, diffusion expansion and the like based on the reverse Carnot cycle. The second water source unit 5 includes a second evaporator 51 and a second condenser 52, and the working principle and structure thereof are the same as those of the first water source unit 3, and therefore, redundant description is not repeated here.
A water collector 11, a first mixing pump 12 and a first water inlet valve 13 which are sequentially communicated in a fluid mode are further arranged between the geothermal well 1 and the first evaporator 31. The three geothermal wells 1 and the air source 2 are both in fluid communication with the water collector 11 and provide water for the water collector 11, the first mixing pump 12 is used for conveying water in the water collector 11 into the first evaporator 31 for heat exchange, and the first water inlet valve 13 can be used for switching on and switching off the fluid communication between the first mixing pump 12 and the first evaporator 31. Wherein, an air source water inlet valve 26 is arranged between the air source 2 and the water collector 11, and the air source water inlet valve 26 can connect and cut off the fluid communication between the air source 2 and the water collector 11.
A second mixing pump 15 and a second water inlet valve 16, which are sequentially in fluid communication, are also provided between the sump 11 and the second evaporator 51. The second mixing pump 15 is used for delivering the water in the sump 11 to the second evaporator 51 for heat exchange, and the second water inlet valve 16 can switch on and off the fluid communication between the second mixing pump 15 and the second evaporator 51. The geothermal well 1 mixes the heat transfer with the water of air source 2 in the water collector 11, can reduce the hot water temperature (the temperature of air source 2 department is less than the temperature of geothermal well 1 department) that gets into first evaporimeter 31 and second evaporimeter 51 when guaranteeing sufficient water yield to reduce the heat transfer difference in temperature of first evaporimeter 31 and second evaporimeter 51, improve heat transfer efficiency, realize the multistage effective utilization to geothermal energy.
The thermal energy utilization system 100 is further arranged with a water knockout vessel 18, a geothermal circulation pump 19 between the water knockout vessel 18 and the geothermal well 1 and an air source circulation pump 21 between the water knockout vessel 18 and the air source 2. The first evaporator 31 and the second evaporator 51 are in fluid communication with the water separator 18 through the first water return valve 14 and the second water return valve 17, respectively. Wherein, well side moisturizing pump 81 and water knockout drum 18 fluid intercommunication, still arrange air source return valve 27 between air source 2 and the water knockout drum 18, air source return valve 27 can put through and cut off the fluid intercommunication of air source 2 and water knockout drum 11.
A third water inlet valve 33 and a third water return valve 34 are arranged between the user air-conditioning side and the second condenser 32, and the user air-conditioning side, the third water inlet valve 33, the second condenser 32 and the third water return valve 34 are sequentially in fluid communication and form a loop for circulating water. An air-conditioning side circulation pump 35 that provides fluid flow power is also disposed between the third water inlet valve 33 and the user air-conditioning side. The cooling tower 4 forms a circulation loop with the second condenser 32 through the cooling tower inlet valve 41 and the cooling return valve 42, and a cooling tower circulation pump 43 for providing fluid flow power is arranged between the cooling tower inlet valve 42 and the cooling tower 4.
An air source cold supply valve 22, a cold supply main valve 23, a cold return main valve 24 and an air source cold return valve 25 are arranged between the air source 2 and the user air-conditioning side, and the air source 2, the air source cold supply valve 22, the cold supply main valve 23, the user air-conditioning side, the cold return main valve 24 and the air source cold return valve 25 are sequentially in fluid communication and form a loop for circulating and flowing water. The first evaporator 31 is in fluid communication with the cooling main valve 24 and the cooling main valve 23 through a fourth water inlet valve 36 and a fourth water return valve 37, respectively. Wherein, the air source circulating pump 21 is located between the air source 2 and the air source back cooling valve 25, and the air-conditioning side circulating pump 35 is located between the back cooling main valve 24 and the user air-conditioning side.
The heat exchanger 6 fluidly connects the sump 11 and the water separator 16 through a fifth water inlet valve 61 and a fifth water return valve 62, respectively. A water side circulating pump 71, a sixth water inlet valve 53 and a sixth water return valve 54 are arranged between the water tank 7 and the second condenser 52, and the water tank 7, the water side circulating pump 71, the sixth water inlet valve 53, the second condenser 52 and the sixth water return valve 54 are sequentially in fluid communication and form a loop in which common water circularly flows. A seventh water inlet valve 63 and a seventh water return valve 64 are arranged between the heat exchanger 6 and the water tank 7 to form a circulation loop, and a water side circulation pump 71 is positioned between the seventh water inlet valve 63 and the water tank 7.
The working principle of the thermal energy utilization system is explained as follows: when the user air-conditioning side needs to be heated in winter, the air source cold supply valve 22, the cold supply main valve 23, the cold return main valve 24, the air source cold return valve 25, the fourth water inlet valve 36, the fourth water return valve 37, the cooling tower water inlet valve 41, the cooling tower recovery valve 42, the fifth water inlet valve 61, the fifth water return valve 62, the seventh water inlet valve 63 and the seventh water return valve 64 are sequentially closed, the rest of the valves are opened, and the geothermal circulating pump 19, the air source circulating pump 21, the first mixing pump 12, the second mixing pump 14, the air-conditioning side circulating pump 35 and the water-side circulating pump 71 are started.
Hot water from the geothermal well 1 is mixed with water from the air source 2 in the water collector 11, and the hot water in the water collector 11 enters the first evaporator 31 and the second evaporator 51 through the first mixing pump 12 and the second mixing pump 15 respectively and gives off heat. The first condenser 32 and the second condenser 52 respectively emit heat to the outside to heat the air conditioning side of the user and heat domestic water.
When cooling of the air-conditioning side of the user is needed in summer, the air source cooling supply valve 22, the cooling supply main valve 23, the cooling return main valve 24, the air source cooling return valve 25, the fourth water inlet valve 36, the fourth water return valve 37, the cooling tower water inlet valve 41, the cooling tower water return valve 42, the fifth water inlet valve 61, the fifth water return valve 62, the seventh water inlet valve 63 and the seventh water return valve 64 are opened in sequence, the rest valves are closed, and the geothermal circulating pump 19, the air source circulating pump 21, the first mixing pump 12, the second mixing pump 14, the air-conditioning side circulating pump 35 and the water-side circulating pump 71 are started.
The air source 2 and the first evaporator 31 serve as cooling on the air conditioning side of the user, and reduce the temperature of water from the air conditioning side of the user. The heat absorbed by the first evaporator 31 is transferred to the cooling tower 4 through the first condenser 32, and is transferred from the cooling tower 4 to the external environment. The geothermal well 1, the water collector 11, the heat exchanger 6 and the water separator 18 are sequentially communicated in a fluid mode to form a water supply circulation loop, and the geothermal well 1 provides heat energy for the heat exchanger 6 and heats domestic water from the water tank 7.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims, the description and the equivalents thereof.
Claims (10)
1. A geothermal source-air source integrated heat energy utilization system capable of supplying heat, cooling and heating domestic water to a user air-conditioning side, the geothermal source-air source integrated heat energy utilization system (100) comprising:
at least one geothermal well (1);
the air source (2), the air source cold supply valve (22) and the air source cold return valve (25) are arranged at the air source (2), and the air source (2), the air source cold supply valve (22), the user air conditioning side and the air source cold return valve (25) are sequentially in fluid communication and form a loop for circulating water;
the first water source unit (3) comprises a first evaporator (31) and a first condenser (32), a first water inlet valve (13) and a first water return valve (14) are arranged at the first evaporator (31), and the at least one geothermal well (1), the first water inlet valve (13), the first evaporator (31) and the first water return valve (14) are sequentially in fluid communication and form a loop for circulating and flowing water; the air source (2), the first water inlet valve (13), the first evaporator (31) and the first water return valve (14) are sequentially in fluid communication and form a loop for circulating water; a third water inlet valve (33) and a third water return valve (34) are arranged at the first condenser (32), and the user air-conditioning side, the third water inlet valve (33), the first condenser (32) and the third water return valve (34) are sequentially in fluid communication and form a loop for circulating water;
the second water source unit (5) comprises a second evaporator (51) and a second condenser (52), a second water inlet valve (16) and a second water return valve (17) are arranged at the second evaporator (51), and the at least one geothermal well (1), the second water inlet valve (16), the second evaporator (51) and the second water return valve (17) are sequentially in fluid communication and form a loop for circulating and flowing water; the air source (2), the second water inlet valve (16), the second evaporator (51) and the second water return valve (17) are sequentially in fluid communication and form a loop for circulating water; a sixth water inlet valve (53) and a sixth water return valve (54) are arranged at the second condenser (52), and the sixth water inlet valve (53), the second condenser (52) and the sixth water return valve (54) are sequentially communicated in a fluid manner and can be used for domestic water to flow; and
the system comprises a heat exchanger (6), wherein a fifth water inlet valve (61), a fifth water return valve (62), a seventh water inlet valve (63) and a seventh water return valve (64) are arranged at the heat exchanger (6), and the at least one geothermal well (1), the fifth water inlet valve (61), the heat exchanger (6) and the fifth water return valve (62) are sequentially in fluid communication and form a loop for circulating and flowing water; the seventh water inlet valve (63), the heat exchanger (6) and the seventh water return valve (64) are sequentially communicated in a fluid manner and can be used for domestic water to flow.
2. The geothermal source-air source integrated thermal energy utilization system according to claim 1, wherein a fourth water inlet valve (36) and a fourth water return valve (37) are further arranged at the first evaporator (31), and the user air conditioning side, the fourth water inlet valve (36), the first evaporator (31) and the fourth water return valve (37) are sequentially in fluid communication and form a loop for circulating water.
3. The geothermal source-air source integrated heat energy utilization system according to claim 2, further comprising a cooling tower (4), wherein a cooling tower water inlet valve (41) and a cooling tower water return valve (42) are arranged at the cooling tower (4), and the second condenser (32), the cooling tower water inlet valve (41), the cooling tower (4) and the cooling tower water return valve (42) are sequentially in fluid communication and form a loop for circulating water.
4. The geothermal source-air source integrated thermal energy utilization system according to claim 1, further comprising a water replenishment system comprising a well side water replenishment pump (81) in fluid communication with the at least one geothermal well (1) and a user side water replenishment pump (82) in fluid communication with the user air conditioning side.
5. The geothermal source-air source integrated thermal energy utilization system according to claim 1, further comprising a water tank (7) for storing domestic water, wherein the water tank (7) is simultaneously in fluid communication with the sixth water inlet valve (53), the sixth water return valve (54), the seventh water inlet valve (63) and the seventh water return valve (64).
6. The geothermal source-air source integrated thermal energy utilization system according to claim 1, wherein a water collector (11) is arranged between the at least one geothermal well (1) and the first water inlet valve (13), and the water collector (11) is in fluid communication with the air source (2) and the second water inlet valve (16).
7. The geothermal source-air source integrated thermal energy utilization system according to claim 6, wherein a first mixing pump (12) for providing fluid flow power is arranged between the water collector (11) and the first water inlet valve (13), and a second mixing pump (15) for providing fluid flow power is arranged between the water collector (11) and the second water inlet valve (16).
8. The geothermal source-air source integrated thermal energy utilization system according to claim 6, wherein an air source water inlet valve (26) is arranged between the water collector (11) and the air source (2).
9. A geothermal source-air source integrated thermal energy utilization system according to claim 1, wherein a water separator (18) is arranged between the at least one geothermal well (1) and the first water return valve (14), and the water separator (18) is in fluid communication with the air source (2) and the second water return valve (17).
10. The geothermal source-air source integrated heat energy utilization system according to claim 9, wherein a geothermal circulating pump (19) is arranged between the water separator (18) and the at least one geothermal well (1), and an air source circulating pump (21) is arranged between the water separator (18) and the air source (2).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112556040A (en) * | 2020-12-05 | 2021-03-26 | 万江新能源集团有限公司 | Shallow geothermal energy and air source coupling system |
| CN213514507U (en) * | 2020-09-18 | 2021-06-22 | 天津大学建筑设计规划研究总院有限公司 | Energy system for comprehensively utilizing various energy sources |
| CN219530973U (en) * | 2023-03-17 | 2023-08-15 | 江苏金通灵光核能源科技有限公司 | Combined heat supply unit of geothermal source and air heat source |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN213514507U (en) * | 2020-09-18 | 2021-06-22 | 天津大学建筑设计规划研究总院有限公司 | Energy system for comprehensively utilizing various energy sources |
| CN112556040A (en) * | 2020-12-05 | 2021-03-26 | 万江新能源集团有限公司 | Shallow geothermal energy and air source coupling system |
| CN219530973U (en) * | 2023-03-17 | 2023-08-15 | 江苏金通灵光核能源科技有限公司 | Combined heat supply unit of geothermal source and air heat source |
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