Multi-energy complementary cold and heat combined supply system

Abstract

The utility model provides a multi-energy complementary combined cooling and heating system, which relates to the technical field of clean low-carbon comprehensive energy utilization and comprises a water collector, a water distributor, a geothermal energy heating system, an electric boiler heating system and a waste heat heating system. A water outlet of the water collector and a water inlet of the water segregator are respectively connected with a user side; the geothermal energy heating system is respectively communicated with a water inlet of the water collector and a water outlet of the water segregator; the electric boiler heat supply system is respectively communicated with a water inlet of the water collector and a water outlet of the water segregator; the waste heat heating system comprises a first heat exchanger and a hydrogen fuel cell, the hot side of the first heat exchanger is connected with the hydrogen fuel cell to absorb waste heat of the hydrogen fuel cell, a cold side outlet of the first heat exchanger is communicated with a water inlet of the water collector, and a cold side inlet of the first heat exchanger is communicated with a water outlet of the water segregator. According to the utility model, the energy utilization efficiency and reliability can be improved, and the pollution to the environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of clean and low-carbon integrated energy utilization technology, and more specifically, to a multi-energy complementary combined cooling and heating system. Background Technology

[0002] With the increasing severity of global climate change and the continuous increase in energy consumption, finding more efficient, environmentally friendly and sustainable heating solutions has become an urgent need.

[0003] In related technologies, heating systems that use a single energy source, such as coal-fired boilers or gas-fired wall-hung boilers, often suffer from low energy efficiency. Utility Model Content

[0004] The problem this invention addresses is: how to improve the energy efficiency of heating systems.

[0005] To address the aforementioned problems, this utility model provides a multi-energy complementary combined cooling and heating system.

[0006] This utility model provides a multi-energy complementary combined cooling and heating system, including a water collector, a water distributor, a geothermal heating system, an electric boiler heating system, and a waste heat heating system. The outlet of the water collector and the inlet of the water distributor are respectively used to connect to the user side. The geothermal heating system is connected to the inlet of the water collector and the outlet of the water distributor. The electric boiler heating system is connected to the inlet of the water collector and the outlet of the water distributor. The waste heat heating system includes a first heat exchanger and a hydrogen fuel cell. The hot side of the first heat exchanger is connected to the hydrogen fuel cell to absorb the waste heat of the hydrogen fuel cell. The cold side outlet of the first heat exchanger is connected to the inlet of the water collector, and the cold side inlet of the first heat exchanger is connected to the outlet of the water distributor.

[0007] Optionally, the casing of the hydrogen fuel cell is provided with a cooling water channel, the outlet of the cooling water channel is connected to the hot side inlet of the first heat exchanger, and the inlet of the cooling water channel is connected to the hot side outlet of the first heat exchanger.

[0008] Optionally, the electric boiler heating system includes an electric boiler and a second heat exchanger. The outlet of the electric boiler is connected to the hot side inlet of the second heat exchanger through a first pipe. The return outlet of the electric boiler is connected to the hot side outlet of the second heat exchanger through a second pipe. The cold side outlet of the second heat exchanger is connected to the inlet of the water collector. The cold side inlet of the second heat exchanger is connected to the outlet of the water distributor.

[0009] Optionally, the electric boiler heating system further includes a heat storage tank. The hot-side inlet of the heat storage tank is connected to the outlet of the electric boiler via a third pipe. The hot-side outlet of the heat storage tank is connected to the return outlet of the electric boiler via a fourth pipe. The cold-side outlet of the heat storage tank is connected to the hot-side inlet of the second heat exchanger via a fifth pipe. The cold-side inlet of the heat storage tank is connected to the hot-side outlet of the second heat exchanger via a sixth pipe.

[0010] Optionally, the second pipe is provided with a first valve, the third pipe is provided with a second valve, the fourth pipe is provided with a third valve, the hot side inlet of the second heat exchanger is provided with a fourth valve, and the sixth pipe is provided with a fifth valve.

[0011] Optionally, the geothermal heating system includes a geothermal well and a heat pump unit. The heat pump unit includes an evaporator and a condenser. The outlet of the geothermal well is connected to the inlet of the evaporator through a seventh pipe. The return outlet of the geothermal well is connected to the outlet of the evaporator through an eighth pipe. The outlet of the condenser is connected to the inlet of the water collector through a ninth pipe. The inlet of the condenser is connected to the outlet of the water distributor through a tenth pipe.

[0012] Optionally, the tenth pipe is equipped with a sixth valve, and the portion of the tenth pipe between the sixth valve and the water distributor is connected to the inlet of the evaporator via an eleventh pipe, which is equipped with a seventh valve and an eighth valve; the ninth pipe is equipped with a ninth valve, and the portion of the ninth pipe between the ninth valve and the water collector is connected to the outlet of the evaporator via a twelfth pipe, which is equipped with a tenth valve, and the eighth pipe is equipped with an eleventh valve; the geothermal heating system further includes a cooling tower, the outlet of which is connected to the inlet of the condenser, and the return outlet of which is connected to the outlet of the condenser.

[0013] Optionally, a thirteenth pipe is connected between the portion of the seventh pipe between the eighth valve and the geothermal well and the outlet of the cooling tower. A twelfth valve is provided on the thirteenth pipe. A fourteenth pipe is connected between the portion of the seventh pipe between the thirteenth pipe and the eighth valve and the inlet of the condenser. A thirteenth valve is provided on the fourteenth pipe. The outlet of the cooling tower is connected to the inlet of the condenser in sequence through the thirteenth pipe, the seventh pipe, and the fourteenth pipe.

[0014] Optionally, a fifteenth pipe is connected between the portion of the eighth pipe between the eleventh valve and the geothermal well and the return water inlet of the cooling tower. A fourteenth valve is provided on the fifteenth pipe. A sixteenth pipe is connected between the portion of the eighth pipe between the fifteenth pipe and the eleventh valve and the outlet of the condenser. A fifteenth valve is provided on the sixteenth pipe. The return water inlet of the cooling tower is connected to the outlet of the condenser in sequence through the fifteenth pipe, the eighth pipe, and the sixteenth pipe.

[0015] Optionally, multiple geothermal wells are provided, and the multiple geothermal wells are connected in parallel between the seventh pipe and the eighth pipe.

[0016] The beneficial effects of this multi-energy complementary combined cooling and heating system are as follows: The hot side of the first heat exchanger is connected to the hydrogen fuel cell, thereby absorbing the waste heat generated by the hydrogen fuel cell and transferring it to the user side via the water collector and distributor to supply heat to the user side. This utilizes the waste heat generated by the hydrogen fuel cell, avoiding waste and thus improving the energy efficiency of the multi-energy complementary combined cooling and heating system. Simultaneously, the geothermal heating system is connected to the inlet of the water collector and the outlet of the distributor, enabling geothermal heating to the user side. The electric boiler heating system is connected to the inlet of the water collector and the outlet of the distributor, enabling electric heating to the user side. Combined with the waste heat heating system, this forms a multi-energy complementary heating system for the user side, thereby improving the system's reliability. Furthermore, the geothermal energy used in the geothermal heating system, the electricity used in the electric boiler heating system, and the waste heat used in the waste heat heating system are all clean and low-carbon energy sources, reducing environmental pollution and contributing to environmental protection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a multi-energy complementary combined cooling and heating system according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of an electric boiler heating system according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a geothermal heating system according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Water collector; 2. Water distributor; 3. Geothermal heating system; 31. Geothermal well; 32. Heat pump unit; 324. Evaporator; 325. Condenser; 33. Seventh pipe; 34. Eighth pipe; 35. Ninth pipe; 36. Tenth pipe; 361. Fourth water pump; 37. Sixth valve; 38. Eleventh pipe; 39. Seventh valve; 310. Eighth valve; 311. Ninth valve; 312. Twelfth pipe; 313. Tenth valve; 314. Eleventh valve; 315. Cooling tower; 316. Thirteenth pipe; 317. Twelfth valve; 318. Fourteenth pipe; 319. Thirteenth valve; 320. 15. Pipeline; 321. Fourteenth Valve; 322. Sixteenth Pipeline; 323. Fifteenth Valve; 4. Electric Boiler Heating System; 41. Electric Boiler; 42. Second Heat Exchanger; 43. First Pipeline; 44. Second Pipeline; 45. Second Water Pump; 46. Third Water Pump; 47. Heat Storage Tank; 48. Third Pipeline; 49. Fourth Pipeline; 410. Fifth Pipeline; 411. Sixth Pipeline; 412. First Valve; 413. Second Valve; 414. Third Valve; 415. Fourth Valve; 416. Fifth Valve; 5. Waste Heat Heating System; 51. First Heat Exchanger; 52. Hydrogen Fuel Cell; 53. First Water Pump; 6. User Side. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0023] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0024] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0025] This invention provides a multi-energy complementary combined cooling and heating system, which can improve energy utilization efficiency. The following detailed description is provided with reference to specific embodiments.

[0026] like Figure 1 As shown in the figure, this utility model provides a multi-energy complementary combined cooling and heating system, including a water collector 1, a water distributor 2, a geothermal energy heating system 3, an electric boiler heating system 4, and a waste heat heating system 5; the outlet of the water collector 1 and the inlet of the water distributor 2 are respectively used to connect to the user side 6; the geothermal energy heating system 3 is connected to the inlet of the water collector 1 and the outlet of the water distributor 2 respectively; the electric boiler heating system 4 is connected to the inlet of the water collector 1 and the outlet of the water distributor 2 respectively; the waste heat heating system 5 includes a first heat exchanger 51 and a hydrogen fuel cell 52, the hot side of the first heat exchanger 51 is connected to the hydrogen fuel cell 52 to absorb the waste heat of the hydrogen fuel cell 52, the cold side outlet of the first heat exchanger 51 is connected to the inlet of the water collector 1, and the cold side inlet of the first heat exchanger 51 is connected to the outlet of the water distributor 2.

[0027] It should be noted that the hot side of the first heat exchanger 51 is the side of the first heat exchanger 51 connected to the heat source, and the cold side of the first heat exchanger 51 is the side of the first heat exchanger 51 connected to the user side 6.

[0028] In this embodiment, the hot side of the first heat exchanger 51 is connected to the hydrogen fuel cell 52. Thus, the first heat exchanger 51 can absorb the waste heat generated by the hydrogen fuel cell 52 and transfer it to the user side 6 via the water collector 1 and the water distributor 2 to supply heat to the user side 6. This utilizes the waste heat generated by the hydrogen fuel cell 52, avoiding waste and improving the energy efficiency of the multi-energy complementary combined cooling and heating system. Simultaneously, the geothermal heating system 3 is connected to the inlet of the water collector 1 and the outlet of the water distributor 2, respectively, enabling heat supply to the user side. The geothermal energy heating system 6 and the electric boiler heating system 4 are connected to the inlet of the water collector 1 and the outlet of the water distributor 2, respectively, which can realize the electric energy heating of the user side 6. Combined with the waste heat heating system 5, a multi-energy complementary heating system is formed for the user side 6, thereby improving the reliability of the system. In addition, the geothermal energy used by the geothermal energy heating system 3, the electric energy used by the electric boiler heating system 4, and the waste heat used by the waste heat heating system 5 are all clean and low-carbon energy sources, which can reduce environmental pollution and help protect the environment.

[0029] Optionally, such as Figure 1 As shown, the hydrogen fuel cell 52 has a cooling water channel in its housing. The outlet of the cooling water channel is connected to the hot side inlet of the first heat exchanger 51, and the inlet of the cooling water channel is connected to the hot side outlet of the first heat exchanger 51.

[0030] Specifically, the outlet of the cooling water channel can be connected to the hot-side inlet of the first heat exchanger 51 via a pipe, and the inlet of the cooling water channel can also be connected to the hot-side outlet of the first heat exchanger 51 via a pipe; there are no restrictions here. The cold-side outlet of the first heat exchanger 51 can be connected to the inlet of the water collector 1 via a pipe, and the cold-side inlet of the first heat exchanger 51 can also be connected to the outlet of the water distributor 2 via a pipe. Furthermore, a first water pump 53 can be installed on the pipe between the cold-side inlet of the first heat exchanger 51 and the outlet of the water distributor 2. In addition, the multi-energy complementary combined cooling and heating system can also include a power supply system, and the hydrogen fuel cell 52 can be electrically connected to the power supply system to provide power to the multi-energy complementary combined cooling and heating system.

[0031] In this optional embodiment, the cooling water channel is connected to the hot side inlet and hot side outlet of the first heat exchanger 51 to form a circulation loop. When the circulating water flows along the circulation loop, it can absorb the heat of the hydrogen fuel cell 52 and conduct it to the cold side of the first heat exchanger 51, thereby supplying heat to the user side 6. This effectively avoids the waste of waste heat of the hydrogen fuel cell 52, resulting in higher energy utilization efficiency and better economy.

[0032] Optionally, such as Figure 1 and Figure 2 As shown, the electric boiler heating system 4 includes an electric boiler 41 and a second heat exchanger 42. The outlet of the electric boiler 41 is connected to the hot side inlet of the second heat exchanger 42 through a first pipe 43. The return outlet of the electric boiler 41 is connected to the hot side outlet of the second heat exchanger 42 through a second pipe 44. The cold side outlet of the second heat exchanger 42 is connected to the inlet of the water collector 1. The cold side inlet of the second heat exchanger 42 is connected to the outlet of the water distributor 2.

[0033] Specifically, the cold side outlet of the second heat exchanger 42 can be connected to the inlet of the water collector 1 through a pipeline, and the cold side inlet of the second heat exchanger 42 can also be connected to the outlet of the water distributor 2 through a pipeline. Furthermore, a second water pump 45 can be installed on the pipeline between the cold side inlet of the second heat exchanger 42 and the outlet of the water distributor 2, and a third water pump 46 can be installed on the second pipeline 44.

[0034] In this optional embodiment, the outlet of the electric boiler 41 is connected to the hot-side inlet of the second heat exchanger 42 via the first pipe 43, and the return outlet of the electric boiler 41 is connected to the hot-side outlet of the second heat exchanger 42 via the second pipe 44. Thus, the electric boiler 41, the first pipe 43, the hot side of the second heat exchanger 42, and the second pipe 44 can be connected in series to form a circulation loop (the circulation direction can be referred to...). Figure 2 As shown by the solid arrow, when the circulating water flows along the circulation loop, it can absorb the heat of the electric boiler 41 and conduct it to the cold side of the second heat exchanger 42, thereby providing the heat of the electric boiler 41 to the user side 6.

[0035] Optionally, such as Figure 1 and Figure 2 As shown, the electric boiler heating system 4 also includes a heat storage tank 47. The hot side inlet of the heat storage tank 47 is connected to the outlet of the electric boiler 41 through a third pipe 48. The hot side outlet of the heat storage tank 47 is connected to the return water port of the electric boiler 41 through a fourth pipe 49. The cold side outlet of the heat storage tank 47 is connected to the hot side inlet of the second heat exchanger 42 through a fifth pipe 410. The cold side inlet of the heat storage tank 47 is connected to the hot side outlet of the second heat exchanger 42 through a sixth pipe 411.

[0036] It is understandable that, since the hot-side inlet of the heat storage tank 47 is connected to the outlet of the electric boiler 41 through the third pipe 48, and the hot-side outlet of the heat storage tank 47 is connected to the return outlet of the electric boiler 41 through the fourth pipe 49, the electric boiler 41, the third pipe 48, the hot side of the heat storage tank 47, and the fourth pipe 49 can be connected in series to form a circulation loop (the circulation direction can be referred to...). Figure 2 (Hollow arrow shown) In this circulation loop, the circulating water can transfer the heat from the electric boiler 41 to the heat storage tank 47 for storage. Simultaneously, since the cold-side outlet of the heat storage tank 47 is connected to the hot-side inlet of the second heat exchanger 42 via the fifth pipe 410, and the cold-side inlet of the heat storage tank 47 is connected to the hot-side outlet of the second heat exchanger 42 via the sixth pipe 411, the cold side of the heat storage tank 47, the fifth pipe 410, the hot side of the second heat exchanger 42, and the sixth pipe 411 can be connected in series to form a circulation loop (the circulation direction can be referenced). Figure 2 (Solid arrow shown) In this circulation loop, the circulating water can transfer the heat from the heat storage tank 47 to the cold side of the second heat exchanger 42 to supply heat to the user side 6.

[0037] In this optional embodiment, the heat storage tank 47 can store part of the heat from the electric boiler 41 through the third pipe 48 and the fourth pipe 49, and transfer it to the second heat exchanger 42 through the fifth pipe 410 and the sixth pipe 411 when needed by the user side 6, thereby supplying heat to the user side 6. This helps to improve the reliability of this multi-energy complementary combined cooling and heating system.

[0038] Optionally, such as Figure 1 and Figure 2 As shown, the second pipe 44 is provided with a first valve 412, the third pipe 48 is provided with a second valve 413, the fourth pipe 49 is provided with a third valve 414, the hot side inlet of the second heat exchanger 42 is provided with a fourth valve 415, and the sixth pipe 411 is provided with a fifth valve 416.

[0039] In this optional embodiment, during off-peak electricity hours, the first valve 412, the second valve 413, the third valve 414, and the fourth valve 415 can be opened, while the fifth valve 416 can be closed. At this time, the electric boiler 41 is started, and the heat generated can be transferred to the heat storage tank 47 for storage through the third pipe 48 and the fourth pipe 49, or directly transferred to the second heat exchanger 42 through the first pipe 43 and the second pipe 44 to provide heat to the user side 6. During peak electricity hours, the first valve 412 and the third valve 414 can be closed, while the fifth valve 416 can be opened. At this time, the fifth valve 416 is closed, and the heat stored in the heat storage tank 47 can be transferred to the second heat exchanger 42 through the fifth pipe 410 and the sixth pipe 411 to provide heat to the user side 6. This can realize a heating method of heat storage and heating during off-peak electricity hours and heating through heat storage during peak electricity hours. This method can not only balance the grid load, but also ensure the storage of heat energy when the electricity cost is low, thereby improving the economy and reliability of this multi-energy complementary combined cooling and heating system.

[0040] Optionally, such as Figure 1 and Figure 3 As shown, the geothermal heating system 3 includes a geothermal well 31 and a heat pump unit 32. The heat pump unit 32 includes an evaporator 324 and a condenser 325. The outlet of the geothermal well 31 is connected to the inlet of the evaporator 324 through a seventh pipe 33. The return outlet of the geothermal well 31 is connected to the outlet of the evaporator 324 through an eighth pipe 34. The outlet of the condenser 325 is connected to the inlet of the water collector 1 through a ninth pipe 35. The inlet of the condenser 325 is connected to the outlet of the water distributor 2 through a tenth pipe 36.

[0041] Specifically, a fourth water pump 361 can be installed on the tenth pipe 36.

[0042] In this optional embodiment, the outlet of the geothermal well 31 is connected to the inlet of the evaporator 324 via the seventh pipe 33, and the return outlet of the geothermal well 31 is connected to the outlet of the evaporator 324 via the eighth pipe 34. Thus, the geothermal well 31, the seventh pipe 33, the evaporator 324, and the eighth pipe 34 can be connected in series to form a circulation loop (the circulation direction can be referenced). Figure 3(Hollow arrow shown); Simultaneously, the outlet of condenser 325 is connected to the inlet of water collector 1 via the ninth pipe 35, and the inlet of condenser 325 is connected to the outlet of water distributor 2 via the tenth pipe 36. Thus, condenser 325, the ninth pipe 35, water collector 1, water distributor 2, and the tenth pipe 36 can be connected in series to form a circulation loop (the circulation direction can be referenced). Figure 3 (Solid arrow shown) Thus, the circulating water circulates between the geothermal well 31 and the evaporator 324, transferring the heat from the geothermal well 31 to the evaporator 324, which in turn transfers it to the condenser 325. The circulating water then circulates along the condenser 325, the water collector 1, and the water distributor 2, transferring the heat from the condenser 325 to the user side 6, thereby providing the heat from the geothermal well 31 to the user side 6.

[0043] Optionally, such as Figure 1 and Figure 3 As shown, the tenth pipe 36 is equipped with a sixth valve 37. The portion of the tenth pipe 36 between the sixth valve 37 and the water distributor 2 is connected to the inlet of the evaporator 324 via an eleventh pipe 38. The eleventh pipe 38 is equipped with a seventh valve 39. The seventh pipe 33 is equipped with an eighth valve 310. The ninth pipe 35 is equipped with a ninth valve 311. The portion of the ninth pipe 35 between the ninth valve 311 and the water collector 1 is connected to the outlet of the evaporator 324 via a twelfth pipe 312. The twelfth pipe 312 is equipped with a tenth valve 313. The eighth pipe 34 is equipped with an eleventh valve 314. The geothermal heating system 3 also includes a cooling tower 315. The outlet of the cooling tower 315 is connected to the inlet of the condenser 325, and the return outlet of the cooling tower 315 is connected to the outlet of the condenser 325.

[0044] In this optional embodiment, when the sixth valve 37, the ninth valve 311, the eighth valve 310, and the eleventh valve 314 are opened, and the seventh valve 39 and the tenth valve 313 are closed, the evaporator 324, the water collector 1, and the water distributor 2 form a circulation loop, and the condenser 325 and the geothermal well 31 form a circulation loop. At this time, the heat pump unit 32 can transfer the heat from the geothermal well 31 to the user side to achieve the heating function; when the seventh valve 39 and the tenth valve 313 are opened, and the sixth valve 37, the ninth valve 311, the eighth valve 310, and the eleventh valve 314 are closed... In this configuration, the condenser 325, water collector 1, and water distributor 2 form a circulation loop. The outlet and return water of the cooling tower 315 can be connected to the inlet and outlet of the condenser 325, respectively, so that the condenser 325 and the cooling tower 315 form a circulation loop. At this time, the heat pump unit 32 can transfer the cooling capacity of the cooling tower 315 to the user side to achieve the cooling function. In this way, the geothermal energy heating system 3 can achieve both heating and cooling functions, thereby simultaneously meeting the heating needs in winter and the cooling needs in summer. Compared with setting up two systems at the same time and providing heating and cooling separately, the cost is lower.

[0045] Optionally, such as Figure 1 and Figure 3 As shown, the portion of the seventh pipe 33 between the eighth valve 310 and the geothermal well 31 is connected to the outlet of the cooling tower 315 via a thirteenth pipe 316. A twelfth valve 317 is provided on the thirteenth pipe 316. The portion of the seventh pipe 33 between the thirteenth pipe 316 and the eighth valve 310 is connected to the inlet of the condenser 325 via a fourteenth pipe 318. A thirteenth valve 319 is provided on the fourteenth pipe 318. The outlet of the cooling tower 315 is connected to the inlet of the condenser 325 in sequence via the thirteenth pipe 316, the seventh pipe 33, and the fourteenth pipe 318.

[0046] In this optional embodiment, when the twelfth valve 317 and the thirteenth valve 319 are opened and the other valves are closed, the outlet of the cooling tower 315 can be connected to the inlet of the condenser 325 in sequence through the thirteenth pipe 316, the seventh pipe 33 and the fourteenth pipe 318 (the direction of cooling water flow can be referred to...). Figure 3 (As shown by the dashed arrow), this allows the outlet of the cooling tower 315 to be connected to the inlet of the condenser 325. The connecting pipe between the outlet of the cooling tower 315 and the inlet of the condenser 325 borrows part of the pipe between the geothermal well 31 and the evaporator 324, which helps to reduce the amount of pipe used and lower pipe costs.

[0047] Optionally, such as Figure 1 and Figure 3As shown, the portion of the eighth pipe 34 between the eleventh valve 314 and the geothermal well 31 is connected to the return water inlet of the cooling tower 315 via a fifteenth pipe 320. A fourteenth valve 321 is provided on the fifteenth pipe 320. The portion of the eighth pipe 34 between the fifteenth pipe 320 and the eleventh valve 314 is connected to the outlet of the condenser 325 via a sixteenth pipe 322. A fifteenth valve 323 is provided on the sixteenth pipe 322. The return water inlet of the cooling tower 315 is connected to the outlet of the condenser 325 in sequence through the fifteenth pipe 320, the eighth pipe 34, and the sixteenth pipe 322.

[0048] In this optional embodiment, when the fourteenth valve 321 and the fifteenth valve 323 are opened and the other valves are closed, the return water inlet of the cooling tower 315 can be connected to the outlet of the condenser 325 in sequence through the fifteenth pipe 320, the eighth pipe 34 and the sixteenth pipe 322 (the cooling water flow direction can be referred to...). Figure 3 (As shown by the dashed arrow), thus connecting the return water inlet of cooling tower 315 with the outlet of condenser 325. The connecting pipe between the return water inlet of cooling tower 315 and the outlet of condenser 325 borrows part of the pipe between geothermal well 31 and evaporator 324, which helps to reduce the amount of pipe used and lower pipe costs.

[0049] Optionally, such as Figure 1 and Figure 3 As shown, there are multiple geothermal wells 31, and the multiple geothermal wells 31 are connected in parallel between the seventh pipe 33 and the eighth pipe 34.

[0050] In this optional embodiment, setting multiple geothermal wells 31 in parallel can prevent the heating from stopping due to the failure of a single geothermal well 31, which helps to improve the reliability of the system heating.

[0051] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A multi-energy complementary combined cooling and heating system, characterized in that, The system includes a water collector (1), a water distributor (2), a geothermal heating system (3), an electric boiler heating system (4), and a waste heat heating system (5); the outlet of the water collector (1) and the inlet of the water distributor (2) are respectively connected to the user side (6); the geothermal heating system (3) is connected to the inlet of the water collector (1) and the outlet of the water distributor (2); the electric boiler heating system (4) is connected to the inlet of the water collector (1) and the outlet of the water distributor (2). The outlet of the water distributor (2) is connected; the waste heat heating system (5) includes a first heat exchanger (51) and a hydrogen fuel cell (52). The hot side of the first heat exchanger (51) is connected to the hydrogen fuel cell (52) to absorb the waste heat of the hydrogen fuel cell (52). The cold side outlet of the first heat exchanger (51) is connected to the inlet of the water collector (1), and the cold side inlet of the first heat exchanger (51) is connected to the outlet of the water distributor (2).

2. The multi-energy complementary combined cooling and heating system according to claim 1, characterized in that, The hydrogen fuel cell (52) has a cooling water channel in its casing. The outlet of the cooling water channel is connected to the hot side inlet of the first heat exchanger (51), and the inlet of the cooling water channel is connected to the hot side outlet of the first heat exchanger (51).

3. The multi-energy complementary combined cooling and heating system according to claim 1, characterized in that, The electric boiler heating system (4) includes an electric boiler (41) and a second heat exchanger (42). The outlet of the electric boiler (41) is connected to the hot side inlet of the second heat exchanger (42) through a first pipe (43). The return outlet of the electric boiler (41) is connected to the hot side outlet of the second heat exchanger (42) through a second pipe (44). The cold side outlet of the second heat exchanger (42) is connected to the inlet of the water collector (1). The cold side inlet of the second heat exchanger (42) is connected to the outlet of the water distributor (2).

4. The multi-energy complementary combined cooling and heating system according to claim 3, characterized in that, The electric boiler heating system (4) also includes a heat storage tank (47). The hot side inlet of the heat storage tank (47) is connected to the outlet of the electric boiler (41) through a third pipe (48). The hot side outlet of the heat storage tank (47) is connected to the return water port of the electric boiler (41) through a fourth pipe (49). The cold side outlet of the heat storage tank (47) is connected to the hot side inlet of the second heat exchanger (42) through a fifth pipe (410). The cold side inlet of the heat storage tank (47) is connected to the hot side outlet of the second heat exchanger (42) through a sixth pipe (411).

5. The multi-energy complementary combined cooling and heating system according to claim 4, characterized in that, The second pipe (44) is provided with a first valve (412), the third pipe (48) is provided with a second valve (413), the fourth pipe (49) is provided with a third valve (414), the hot side inlet of the second heat exchanger (42) is provided with a fourth valve (415), and the sixth pipe (411) is provided with a fifth valve (416).

6. The multi-energy complementary combined cooling and heating system according to claim 1, characterized in that, The geothermal heating system (3) includes a geothermal well (31) and a heat pump unit (32). The heat pump unit (32) includes an evaporator (324) and a condenser (325). The outlet of the geothermal well (31) is connected to the inlet of the evaporator (324) through a seventh pipe (33). The return outlet of the geothermal well (31) is connected to the outlet of the evaporator (324) through an eighth pipe (34). The outlet of the condenser (325) is connected to the inlet of the water collector (1) through a ninth pipe (35). The inlet of the condenser (325) is connected to the outlet of the water distributor (2) through a tenth pipe (36).

7. The multi-energy complementary combined cooling and heating system according to claim 6, characterized in that, The tenth pipe (36) is provided with a sixth valve (37). The portion of the tenth pipe (36) between the sixth valve (37) and the water distributor (2) is connected to the inlet of the evaporator (324) via an eleventh pipe (38). The eleventh pipe (38) is provided with a seventh valve (39). The seventh pipe (33) is provided with an eighth valve (310). The ninth pipe (35) is provided with a ninth valve (311). The portion of the ninth pipe (35) between the sixth valve (37) and the water distributor (2) is connected to the inlet of the evaporator (324) via an eleventh pipe (38). The eleventh pipe (38) is provided with a seventh valve (39). The seventh pipe (33) is provided with an eighth valve (310). The ninth pipe (35) is provided with a ninth valve (311). The portion between the water collector (1) and the outlet of the evaporator (324) is connected by a twelfth pipe (312), the twelfth pipe (312) is provided with a tenth valve (313), and the eighth pipe (34) is provided with an eleventh valve (314); the geothermal heating system (3) also includes a cooling tower (315), the outlet of the cooling tower (315) is connected to the inlet of the condenser (325), and the return outlet of the cooling tower (315) is connected to the outlet of the condenser (325).

8. The multi-energy complementary combined cooling and heating system according to claim 7, characterized in that, The portion of the seventh pipe (33) between the eighth valve (310) and the geothermal well (31) is connected to the outlet of the cooling tower (315) via a thirteenth pipe (316). The thirteenth pipe (316) is equipped with a twelfth valve (317). The portion of the seventh pipe (33) between the thirteenth pipe (316) and the eighth valve (310) is connected to the inlet of the condenser (325) via a fourteenth pipe (318). The fourteenth pipe (318) is equipped with a thirteenth valve (319). The outlet of the cooling tower (315) is connected to the inlet of the condenser (325) in sequence through the thirteenth pipe (316), the seventh pipe (33), and the fourteenth pipe (318).

9. The multi-energy complementary combined cooling and heating system according to claim 7, characterized in that, The portion of the eighth pipe (34) between the eleventh valve (314) and the geothermal well (31) is connected to the return water inlet of the cooling tower (315) via a fifteenth pipe (320). The fifteenth pipe (320) is equipped with a fourteenth valve (321). The portion of the eighth pipe (34) between the fifteenth pipe (320) and the eleventh valve (314) is connected to the outlet of the condenser (325) via a sixteenth pipe (322). The sixteenth pipe (322) is equipped with a fifteenth valve (323). The return water inlet of the cooling tower (315) is connected to the outlet of the condenser (325) in sequence through the fifteenth pipe (320), the eighth pipe (34), and the sixteenth pipe (322).

10. The multi-energy complementary combined cooling and heating system according to claim 6, characterized in that, The geothermal wells (31) are provided in multiples, and the multiple geothermal wells (31) are connected in parallel between the seventh pipe (33) and the eighth pipe (34).

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