Hydrogen energy-based electricity, cold, and heat combined supply comprehensive utilization system and method

Abstract

The application belongs to the technical field of hydrogen energy comprehensive utilization, and particularly discloses an electricity, cold and heat multi-combined supply comprehensive utilization system and method based on hydrogen energy, which comprises a hydrogen fuel cell system, a heat exchanger, a hydrogen internal combustion engine, a flue gas hot water type lithium bromide unit and a ground source heat pump system. Cooling water of the hydrogen fuel cell system cooling pipe network exchanges heat with first circulating medium of the heat system in the heat exchanger, high-temperature flue gas of the hydrogen internal combustion engine flue gas pipe network and cylinder jacket water of the cylinder jacket water pipe network exchange heat with the first circulating medium in the flue gas hot water type lithium bromide unit, and the second circulating medium of the cold system is cooled in the flue gas hot water type lithium bromide unit. The ground source heat pump system comprises a ground source heat pump unit, and is used for exchanging heat between low-temperature circulating water of the ground source heat pump rock-soil side and the first circulating medium. The application fully utilizes hydrogen energy, uses waste heat generated by hydrogen fuel cell and hydrogen internal combustion engine to generate electricity, heating and cooling, and realizes hydrogen energy cascade utilization.

Description

Technical Field

[0001] This invention belongs to the field of hydrogen energy comprehensive utilization technology, and specifically relates to a hydrogen energy-based combined power, cooling and heating system and method. Background Technology

[0002] Currently, hydrogen energy is gradually becoming a new component of the energy system, and as a clean and efficient energy alternative, it is attracting increasing attention. At the same time, the vigorous development of renewable energy and the cascade utilization of energy are becoming effective driving forces for "carbon peaking and carbon neutrality."

[0003] In civil engineering applications, hydrogen energy is primarily used for power generation through fuel cells or hydrogen internal combustion engines. A hydrogen fuel cell system generates electricity through an electrochemical reaction between hydrogen and oxygen. The reaction environment is high-temperature and requires cooling; the resulting high-temperature cooling water can be used for combined heat and power (CHP). A hydrogen internal combustion engine system generates electricity by converting the heat energy produced during hydrogen combustion into mechanical energy. During power generation, high-temperature flue gas and high-temperature cylinder liner water are produced, which can be converted into CHP for efficient energy utilization.

[0004] To ensure the reliability and sustainability of hydrogen-based heating and cooling, shallow geothermal heat pump technology—ground source heat pump systems—can supplement insufficient heating or cooling. Ground source heat pump systems utilize the heat storage capacity of the soil as the low-grade energy of the heat pump to generate high-grade energy for heating and cooling. In practical applications, the heat extraction for heating in northern winters generally far exceeds the heat release for cooling. In this scenario, long-term heat extraction from underground will gradually lower the temperature of the underground soil and rock, affecting the efficiency of the heat pump unit until it ceases to operate. Furthermore, fuel cell systems and hydrogen internal combustion engine systems, in transitional season power generation modes, have a power generation efficiency of only 40%-50%, with over 40% of the energy wasted as heat through heat dissipation. Therefore, ground source heat pump heating and cooling technology suffers from an imbalance between heat extraction and release from underground soil and rock in winter and summer. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a combined power generation, cooling, and heating system and method based on hydrogen energy.

[0006] The technical solution of this invention is: a hydrogen-based combined heat and power (CHP) system for supplying heat or cooling to the load side. The load side includes a heating system and a cooling system. The heating system uses a first circulating medium as the working fluid, and the cooling system uses a second circulating medium as the working fluid. The system includes:

[0007] Hydrogen fuel cell systems are used to generate electricity;

[0008] The heat exchanger has its heat medium inlet and heat medium outlet connected to the cooling pipe network of the hydrogen fuel cell system, and its cold medium inlet and cold medium outlet connected to the medium circulation pipe network of the heat system. The cooling water in the cooling pipe network exchanges heat with the first circulating medium in the heat exchanger.

[0009] Hydrogen internal combustion engines are used to generate electricity;

[0010] The flue gas hot water type lithium bromide generator unit has its flue gas inlet and outlet connected to the flue gas pipeline network of a hydrogen internal combustion engine, its hot water inlet and outlet connected to the cylinder liner water pipeline network of the hydrogen internal combustion engine, and its cooling water inlet and outlet connected to the medium circulation pipeline network of the heat system. The high-temperature flue gas in the flue gas pipeline network and the cylinder liner water in the cylinder liner water pipeline network exchange heat with the first circulating medium in the flue gas hot water type lithium bromide generator unit. The chilled water inlet and outlet of the flue gas hot water type lithium bromide generator unit are connected to the medium circulation pipeline network of the cooling system, and the second circulating medium is cooled in the flue gas hot water type lithium bromide generator unit.

[0011] The ground source heat pump system includes a ground source heat pump unit. The evaporator inlet and evaporator outlet of the ground source heat pump unit are connected to the geothermal side of the ground source heat pump through a pipeline network. The condenser inlet and condenser outlet are connected to the medium circulation pipeline network of the heat system. The low-temperature circulating water on the geothermal side of the ground source heat pump exchanges heat with the first circulating medium in the ground source heat pump unit.

[0012] Furthermore, the evaporator inlet and evaporator outlet of the ground source heat pump unit are also connected to the cold medium inlet and cold medium outlet of the heat exchanger. The condenser inlet and condenser outlet of the ground source heat pump unit are respectively connected to the geothermal side of the ground source heat pump through a pipeline network. The low-temperature circulating water on the geothermal side of the ground source heat pump and the cooling water in the cooling pipeline network of the hydrogen fuel cell system exchange heat through the ground source heat pump unit and the heat exchanger.

[0013] Furthermore, the evaporator inlet and outlet of the ground source heat pump unit are also connected to the cooling water inlet and outlet of the flue gas hot water type lithium bromide unit. The low-temperature circulating water on the soil side of the ground source heat pump exchanges heat with the high-temperature flue gas in the flue gas pipeline of the hydrogen internal combustion engine and the cylinder liner water in the cylinder liner water pipeline of the hydrogen internal combustion engine through the ground source heat pump unit and the flue gas hot water type lithium bromide unit.

[0014] Furthermore, the medium circulation network of the cooling system is also connected to the soil side of the ground source heat pump, and the low-temperature circulating water on the soil side of the ground source heat pump is used as the cold source of the cooling system.

[0015] Furthermore, the ground source heat pump system also includes a pump unit, which comprises:

[0016] A ground source heat pump side circulating water pump is installed on the pipeline network connecting the ground source heat pump rock and soil side to the ground source heat pump unit, and is used to extract low-temperature circulating water from the ground source heat pump rock and soil side.

[0017] A heating / cooling circulating water pump is installed at the inlet end of the circulating medium on the load side to pressurize the water source entering the load side.

[0018] Furthermore, it also includes cooling tower assemblies, which include:

[0019] The first cooling tower is connected to the flue gas pipeline and cylinder liner water pipeline of the hydrogen internal combustion engine. It is used to cool the high-temperature flue gas and cylinder liner water. After the cylinder liner water is cooled, it becomes the first supply cooling water. The first cooling tower is also connected to the medium circulation pipeline of the cooling system. The first supply cooling water serves as a cold source to supply cooling to the cooling system.

[0020] The second cooling tower is connected to the cooling pipeline network of the hydrogen fuel cell system and is used to cool the cooling water with low-temperature waste heat. The low-temperature waste heat cooling water is cooled to obtain the second supply cooling water. The second cooling tower is also connected to the medium circulation pipeline network of the cooling system, and the second supply cooling water is used as a cold source to supply cooling to the cooling system.

[0021] A hydrogen-based method for integrated utilization of electricity, cooling, and heating, utilizing a combined electricity, cooling, and heating system for heating or cooling, specifically including:

[0022] During the heating season, the cooling water generated by the hydrogen fuel cell system is used to heat the thermal system through a heat exchanger; the high-temperature flue gas and cylinder liner water generated by the hydrogen internal combustion engine are used to heat the thermal system through a flue gas hot water type lithium bromide unit; when the heating season is in full swing or when the hydrogen fuel cell system and hydrogen internal combustion engine are not running, the ground source heat pump unit uses the low-temperature circulating water in the soil side of the ground source heat pump to heat the thermal system.

[0023] During the cooling season, cooling is supplied to the cooling system through flue gas hot water type lithium bromide units.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention makes full use of hydrogen energy, utilizing the waste heat generated by hydrogen fuel cells and hydrogen internal combustion engines for heating and cooling, thus realizing the cascade utilization of hydrogen energy. Specifically, the waste heat from the cooling water of the hydrogen fuel cells is used for heating or cooling through a heat exchanger, and the waste heat from the high-temperature flue gas and cylinder liner water of the hydrogen internal combustion engine is used for heating or cooling through a lithium bromide generator.

[0026] By utilizing hydrogen fuel cells, hydrogen internal combustion engines, and ground source heat pump coupling systems, the application scenarios of hydrogen energy in civil construction have been expanded, providing an integrated solution for multi-energy supply of electricity, cooling, and heating based on hydrogen energy.

[0027] Furthermore, compared to conventional ground source heat pump systems that supply heating / cooling separately, this invention can also inject the waste heat generated by the hydrogen fuel cell system and the hydrogen internal combustion engine system into the underground soil and rock after heat exchange during the transition season, ensuring the thermal balance of the underground soil and rock and achieving cross-seasonal energy storage and efficient and sustainable operation of the ground source heat pump. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Among them, 1-hydrogen fuel cell system, 2-heat exchanger, 3-hydrogen internal combustion engine, 4-flue gas hot water type lithium bromide unit, 5-ground source heat pump system, 51-ground source heat pump on the soil side, 52-ground source heat pump unit, 6-pump set, 61-ground source heat pump side circulating water pump, 62-heating / cooling circulating water pump, 7-cooling tower set, 71-first cooling tower, 72-second cooling tower, 801-first valve, 802-second valve, 803-third valve, 804-fourth valve, 805-fifth valve, 8 06-Sixth valve, 807-Seventh valve, 808-Eighth valve, 809-Ninth valve, 810-Tenth valve, 811-Eleventh valve, 812-Twelfth valve, 813-Thirteenth valve, 814-Fourteenth valve, 815-Fifteenth valve, 816-Sixteenth valve, 817-Seventeenth valve, 818-Eighteenth valve, 819-Nineteenth valve, 820-Twentieth valve, 821-Twenty-first valve, 822-Twenty-second valve, 9-Load side. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 The specific embodiments of the present invention will be described in detail below. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] It should be noted that the circuit connections involved in this invention all adopt conventional circuit connection methods and do not involve any innovation.

[0033] Example

[0034] like Figure 1 The system shown is a hydrogen-based combined heat and power system for supplying heat or cooling to the load side 9. The load side 9 includes a thermal system and a cooling system. The thermal system uses a first circulating medium as the working fluid, and the cooling system uses a second circulating medium as the working fluid.

[0035] The integrated power, cooling, and heating system includes a hydrogen fuel cell system 1, a heat exchanger 2, a hydrogen internal combustion engine 3, a flue gas hot water type lithium bromide unit 4, and a ground source heat pump system 5.

[0036] The hydrogen fuel cell system 1 is used for power generation. The heat medium inlet and outlet of the heat exchanger 2 are connected to the cooling pipe network of the hydrogen fuel cell system 1, and the cold medium inlet and outlet are connected to the medium circulation pipe network of the heat system. The cooling water in the cooling pipe network exchanges heat with the first circulating medium in the heat exchanger 2.

[0037] The hydrogen internal combustion engine 3 is used for power generation. The flue gas inlet and outlet of the flue gas hot water type lithium bromide generator 4 are connected to the flue gas pipeline of the hydrogen internal combustion engine 3, the hot water inlet and outlet are connected to the cylinder liner water pipeline of the hydrogen internal combustion engine 3, and the cooling water inlet and outlet are connected to the medium circulation pipeline of the heat system. The high-temperature flue gas in the flue gas pipeline and the cylinder liner water in the cylinder liner water pipeline exchange heat with the first circulating medium in the flue gas hot water type lithium bromide generator 4. The refrigerant water inlet and outlet of the flue gas hot water type lithium bromide generator 4 are connected to the medium circulation pipeline of the cold system, and the second circulating medium is cooled in the flue gas hot water type lithium bromide generator 4.

[0038] The ground source heat pump system 5 includes a ground source heat pump unit 52. The evaporator inlet and evaporator outlet of the ground source heat pump unit 52 are respectively connected to the ground source heat pump soil side 51 through a pipeline network. The condenser inlet and condenser outlet are respectively connected to the medium circulation pipeline network of the heat system. The low temperature circulating water of the ground source heat pump soil side 51 exchanges heat with the first circulating medium in the ground source heat pump unit 52.

[0039] Preferably, the evaporator inlet and evaporator outlet of the ground source heat pump unit 52 are also connected to the cold medium inlet and cold medium outlet of the heat exchanger 2. The condenser inlet and condenser outlet of the ground source heat pump unit 52 are respectively connected to the geothermal side 51 of the ground source heat pump through a pipeline network. The low-temperature circulating water of the geothermal side 51 of the ground source heat pump and the cooling water in the cooling pipeline network of the hydrogen fuel cell system 1 exchange heat through the ground source heat pump unit 52 and the heat exchanger 2.

[0040] In this process, the cooling water in the cooling pipe network of the hydrogen fuel cell system 1 first exchanges heat with the circulating medium in the evaporator of the ground source heat pump unit 52 in the heat exchanger 2. The cooling water with residual heat transfers heat to the circulating medium in the evaporator of the ground source heat pump unit 52. Then, the low-temperature circulating water on the geothermal side 51 of the ground source heat pump exchanges heat with the circulating medium in the evaporator after heat exchange in the ground source heat pump unit 52, and then is reintroduced into the geothermal side 51 of the ground source heat pump.

[0041] Preferably, the evaporator inlet and outlet of the ground source heat pump unit 52 are also connected to the cooling water inlet and outlet of the flue gas hot water type lithium bromide unit 4. The low-temperature circulating water of the ground source heat pump geothermal side 51 exchanges heat with the high-temperature flue gas in the flue gas pipeline of the hydrogen internal combustion engine 3 and the cylinder liner water in the cylinder liner water pipeline of the hydrogen internal combustion engine 3 through the ground source heat pump unit 52 and the flue gas hot water type lithium bromide unit 4. Specifically, the high-temperature flue gas in the flue gas pipeline of the hydrogen internal combustion engine 3 and the cylinder liner water in the cylinder liner water pipeline of the hydrogen internal combustion engine 3 first exchange heat with the circulating medium in the evaporator of the ground source heat pump unit 52 in the flue gas hot water type lithium bromide unit 4. The cooling water with residual heat transfers heat to the circulating medium in the evaporator of the ground source heat pump unit 52. Then, the low-temperature circulating water of the ground source heat pump geothermal side 51 exchanges heat again with the circulating medium in the evaporator after heat exchange in the ground source heat pump unit 52, and then is reintroduced into the ground source heat pump geothermal side 51.

[0042] Preferably, the medium circulation network of the cooling system is also connected to the geothermal side 51 of the ground source heat pump, and the low-temperature circulating water of the geothermal side 51 is used as the cold source of the cooling system.

[0043] Preferably, the ground source heat pump system 5 further includes a pump set 6, which includes a ground source heat pump side circulating water pump 61 and a heating / cooling circulating water pump 62.

[0044] A ground source heat pump side circulating water pump 61 is installed on the pipeline connecting the ground source heat pump soil side 51 and the ground source heat pump unit 52, and is used to extract low-temperature circulating water from the ground source heat pump soil side 51. A heating / cooling circulating water pump 62 is installed at the inlet end of the circulating medium on the load side 9, and is used to pressurize the water source entering the load side 9.

[0045] Preferably, the system also includes a cooling tower assembly 7, which comprises a first cooling tower 71 and a second cooling tower 72. The first cooling tower 71 is connected to the flue gas pipeline and cylinder liner water pipeline of the hydrogen internal combustion engine 3, and is used to cool the high-temperature flue gas and cylinder liner water. The cooled cylinder liner water becomes the first supply cooling water. The first cooling tower 71 is also connected to the medium circulation pipeline of the cooling system, and the first supply cooling water serves as a cold source to supply cooling to the cooling system. The second cooling tower 72 is connected to the cooling pipeline of the hydrogen fuel cell system 1, and is used to cool the cooling water with low-temperature waste heat. The cooled low-temperature waste heat cooling water becomes the second supply cooling water. The second cooling tower 72 is also connected to the medium circulation pipeline of the cooling system, and the second supply cooling water serves as a cold source to supply cooling to the cooling system.

[0046] It should be noted that heating and cooling are performed in a single operation; that is, heating is provided only during heating season, and cooling is provided only during cooling season. Therefore, the thermal system and the cooling system share a single medium circulation network, with the first and second circulation media being the same substance. Specifically, each load side 9 has its own medium circulation network containing circulating media, which is considered a thermal system during the heating season and a cooling system during the cooling season.

[0047] In addition, the ground source heat pump unit 52 is mainly composed of key components such as a compressor, evaporator, condenser, and expansion valve. The compressor plays the role of compressing and transporting the circulating working fluid from a low temperature and low pressure area to a high temperature and high pressure area, and is the heart of the ground source heat pump unit 52; the evaporator is the device that outputs cooling capacity, and its function is to evaporate the refrigerant liquid flowing in through the throttling valve to absorb heat from the object being cooled, thereby achieving the purpose of cooling; the condenser is the device that outputs heat, and the heat absorbed from the evaporator, together with the heat converted from the work consumed by the compressor, is carried away by the cooling medium in the condenser, thereby achieving the purpose of heating; the expansion valve or throttling valve plays a role in throttling and reducing the pressure of the circulating working fluid, and regulates the flow rate of the circulating working fluid entering the evaporator.

[0048] A method for integrated utilization of electricity, cooling, and heating based on hydrogen energy, utilizing the integrated utilization system for electricity, cooling, and heating proposed in this embodiment for heating or cooling, specifically includes:

[0049] During the heating season, the cooling water generated by the hydrogen fuel cell system 1 is supplied to the load side 9 through the heat exchanger 2; the high-temperature flue gas and cylinder liner water generated by the hydrogen internal combustion engine 3 are supplied to the load side 9 through the flue gas hot water type lithium bromide unit 4; when the heating peak or when the hydrogen fuel cell system 1 and the hydrogen internal combustion engine 3 are not running, the ground source heat pump unit 52 uses the low-temperature circulating water in the geothermal side 51 of the ground source heat pump to supply heat to the load side 9.

[0050] During the cooling season, the high-temperature flue gas and cylinder liner water generated by the hydrogen internal combustion engine 3 are supplied to the load side 9 via low-temperature chilled water generated by the flue gas hot water type lithium bromide unit 4; the ground source heat pump unit 52 supplies cooling to the load side 9 using the low-temperature circulating water in the geothermal side 51 of the ground source heat pump. Cooling can also be supplied to the load side 9 via the first cooling tower 71 and the second cooling tower 72 respectively.

[0051] During the transition season, the cooling water generated by the hydrogen fuel cell system 1 transfers heat to the ground source heat pump unit 52 through the heat exchanger 2, and the high-temperature flue gas and cylinder liner water generated by the hydrogen internal combustion engine 3 transfer heat to the ground source heat pump unit 52 through the flue gas hot water type lithium bromide unit 4.

[0052] Preferably, during the cooling season, the high-temperature flue gas and cylinder liner water generated by the hydrogen internal combustion engine 3 are used to generate low-temperature chilled water through the flue gas hot water type lithium bromide unit 4 to supply cooling to the load side 9.

[0053] The low-temperature circulating water on the soil side 51 of the ground source heat pump exchanges heat with the circulating water in the pipe network on the load side 9 in the ground source heat pump unit 52. After absorbing heat from the circulating water in the pipe network on the load side 9, it can provide cooling to the load side 9. The low-temperature circulating water in the ground source heat pump unit 52, after absorbing heat, will reinject the heat back to the soil side 51 of the ground source heat pump.

[0054] like Figure 1 As shown, the low-temperature circulating water outlet of the geothermal heat pump geothermal side buried pipe system 51 is connected to the evaporator side of the geothermal heat pump unit 52 through the first valve 801. After heat release in the evaporator, the return water is reinjected to the low-temperature circulating water inlet of the geothermal heat pump geothermal side buried pipe system 51 through the second valve 802 and the geothermal heat pump side circulating water pump 61.

[0055] After absorbing heat on the condenser side of the ground source heat pump unit 52, the heating medium is connected to the load side 9 through the eighth valve 808 and the twenty-second valve 822. After cooling, it returns to the condenser through the circulating water pump 62, the thirteenth valve 813 and the seventh valve 807, or it is reinjected to the low temperature circulating water inlet end of the underground pipe system 51 on the soil side of the ground source heat pump through the fifth valve 805 connected to the circulating water pump 61 on the ground source heat pump side.

[0056] The hot water generated by the hydrogen fuel cell 1 is connected to the heat exchanger 2 via the tenth valve 810, and the return water is returned to the hydrogen fuel cell 1 via the ninth valve 809. The heat exchanged heats the circulating medium and is connected to the load side 9 via the fourteenth valve 814 and the twenty-second valve 822 for heating. The hot water is connected to the second cooling tower 72 for heat dissipation via the twelfth valve 812, and the cooling water is connected to the heat exchanger 2 via the eleventh valve 811 and the ninth valve 809, and the heat exchanger transfers cold energy to the load side 9 for cooling.

[0057] The hydrogen internal combustion engine 3 is connected to the flue gas hot water type lithium bromide generator unit 4 via the sixteenth valve 816, the nineteenth valve 819, and the twentieth valve 820. The high-temperature flue gas and cylinder liner water generated during the power generation process of the hydrogen internal combustion engine 3 are used by the flue gas hot water type lithium bromide generator unit 4 to generate high-temperature hot water, which is then supplied to the load side 9 via a connecting pipe. Alternatively, it is connected to the first cooling tower 71 via the seventeenth valve 817. Cooling water is generated by the flue gas hot water type lithium bromide generator unit 4 to generate low-temperature cold water, which is then supplied to the load side 9 via a connecting pipe. Excess flue gas can be discharged via the fifteenth valve 815 if necessary.

[0058] It should be noted that: valves 801, 802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812, 813, 814, 815, 816, 817, 818, 819, 820, 821, and 822 are all located on the pipeline, and the pipeline connection uses conventional technical methods, therefore, they have not been described in detail.

[0059] The specific models of the above electronic components are not specifically specified; any commercially available ordinary products can be selected, as long as they can meet the usage requirements of this invention.

[0060] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A hydrogen-based combined heat, power, and cooling system for supplying heat or cooling to a load side (9), the load side (9) comprising a thermal system and a cooling system, wherein the thermal system uses a first circulating medium as the working fluid and the cooling system uses a second circulating medium as the working fluid; characterized in that, include: Hydrogen fuel cell system (1) for generating electricity; The heat exchanger (2) has its heat medium inlet and heat medium outlet connected to the cooling pipe network of the hydrogen fuel cell system (1), and its cold medium inlet and cold medium outlet connected to the medium circulation pipe network of the heat system. The cooling water in the cooling pipe network exchanges heat with the first circulating medium in the heat exchanger (2). Hydrogen internal combustion engine (3), used for power generation; The flue gas hot water type lithium bromide generator (4) has its flue gas inlet and flue gas outlet connected to the flue gas pipeline of the hydrogen internal combustion engine (3), its hot water inlet and hot water outlet connected to the cylinder liner water pipeline of the hydrogen internal combustion engine (3), and its cooling water inlet and cooling water outlet connected to the medium circulation pipeline of the heat system. The high-temperature flue gas in the flue gas pipeline and the cylinder liner water in the cylinder liner water pipeline exchange heat with the first circulating medium in the flue gas hot water type lithium bromide generator (4). The cold medium water inlet and cold medium water outlet of the flue gas hot water type lithium bromide generator (4) are connected to the medium circulation pipeline of the cold system, and the second circulating medium is cooled in the flue gas hot water type lithium bromide generator (4). The ground source heat pump system (5) includes a ground source heat pump unit (52). The evaporator inlet and evaporator outlet of the ground source heat pump unit (52) are respectively connected to the geothermal side (51) of the ground source heat pump through a pipeline network. The condenser inlet and condenser outlet are respectively connected to the medium circulation pipeline network of the heat system. The low temperature circulating water of the geothermal side (51) of the ground source heat pump exchanges heat with the first circulating medium in the ground source heat pump unit (52).

2. The integrated power, cooling, and heating system based on hydrogen energy as described in claim 1, characterized in that, The evaporator inlet and evaporator outlet of the ground source heat pump unit (52) are also connected to the cold medium inlet and cold medium outlet of the heat exchanger (2). The condenser inlet and condenser outlet of the ground source heat pump unit (52) are respectively used to connect with the geothermal side (51) of the ground source heat pump through the pipeline network. The low temperature circulating water of the geothermal side (51) of the ground source heat pump and the cooling water in the cooling pipeline network of the hydrogen fuel cell system (1) exchange heat through the ground source heat pump unit (52) and the heat exchanger (2).

3. The integrated power, cooling, and heating system based on hydrogen energy as described in claim 2, characterized in that, The evaporator inlet and evaporator outlet of the ground source heat pump unit (52) are also connected to the cooling water inlet and cooling water outlet of the flue gas hot water type lithium bromide unit (4). The low-temperature circulating water of the ground source heat pump soil side (51) and the high-temperature flue gas in the flue gas pipeline of the hydrogen internal combustion engine (3) and the cylinder liner water in the cylinder liner water pipeline of the hydrogen internal combustion engine (3) exchange heat through the ground source heat pump unit (52) and the flue gas hot water type lithium bromide unit (4).

4. The integrated power, cooling, and heating system based on hydrogen energy as described in claim 1, characterized in that, The medium circulation network of the cooling system is also connected to the geothermal side (51) of the ground source heat pump, and the low-temperature circulating water of the geothermal side (51) is used as the cold source of the cooling system.

5. A hydrogen-based combined heat and power (CHP) system for electricity, cooling, and heating as described in claim 4, characterized in that, The ground source heat pump system (5) also includes a pump set (6), which includes: A ground source heat pump side circulating water pump (61) is installed on the pipeline network connecting the ground source heat pump rock and soil side (51) and the ground source heat pump unit (52) to extract low temperature circulating water from the ground source heat pump rock and soil side (51). A heating / cooling circulating water pump (62) is installed at the inlet end of the circulating medium on the load side (9) to supply pressure to the water source entering the load side (9).

6. A hydrogen-based combined heat and power (CHP) system for electricity, cooling, and heating as described in claim 1, characterized in that, It also includes a cooling tower assembly (7), which includes: The first cooling tower (71) is connected to the flue gas pipeline and cylinder liner water pipeline of the hydrogen internal combustion engine (3) and is used to cool the high temperature flue gas and cylinder liner water. After the cylinder liner water is cooled, the first cooling water is obtained. The first cooling tower (71) is also connected to the medium circulation pipeline of the cooling system. The first cooling water is used as a cold source to supply cooling to the cooling system. The second cooling tower (72) is connected to the cooling pipe network of the hydrogen fuel cell system (1) and is used to cool the cooling water with low temperature waste heat. After the low temperature waste heat cooling water is cooled, it becomes the second supply cooling water. The second cooling tower (72) is also connected to the medium circulation pipe network of the cold system. The second supply cooling water is used as a cold source to supply cooling to the cold system.

7. A method for the integrated utilization of electricity, cooling, and heating based on hydrogen energy, characterized in that, Using the combined electricity, cooling, and heating system as described in any one of claims 1-6 for heating or cooling specifically includes: During the heating season, the cooling water generated by the hydrogen fuel cell system (1) is supplied to the heat system through the heat exchanger (2); the high-temperature flue gas and cylinder liner water generated by the hydrogen internal combustion engine (3) are supplied to the heat system through the flue gas hot water type lithium bromide unit (4); when the heating peak or when the hydrogen fuel cell system (1) and the hydrogen internal combustion engine (3) stop running, the ground source heat pump unit (52) uses the low-temperature circulating water in the soil side (51) of the ground source heat pump to supply heat to the heat system. During the cooling season, cooling is supplied to the cooling system through the flue gas hot water type lithium bromide unit (4).

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