A hydrogen fuel cell stationary power plant waste heat recovery cooling system

Abstract

The application discloses a hydrogen fuel cell fixed power station waste heat recovery cooling system, which comprises a primary side heat dissipation module, a secondary side heat dissipation module and a waste heat recovery module. The cooler of the hydrogen fuel cell fixed power station absorbs the waste heat of the electric pile to convert the cold medium into the hot medium. The hot medium is sequentially subjected to heat exchange through the secondary side heat dissipation module, the waste heat recovery module and the primary side heat dissipation module, and the obtained cold medium is returned to the cooler to be subjected to the next heat exchange, so that the stable power generation of the power station is ensured. The application effectively manages the hydrogen fuel cell power generation system, improves the power generation efficiency of the power generation system and the service life of the fuel cell, and reduces the energy consumption of the overall heat dissipation system through the waste heat recovery mode. The recovered heat is used for heating and domestic water.

Description

Technical Field

[0001] This invention belongs to the field of fuel cell technology, specifically relating to a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station. Background Technology

[0002] Hydrogen fuel cells, a renewable energy technology, are receiving increasing commercial interest, fueled by growing pressure on companies to improve their green credentials and the global goal of achieving net-zero emissions by 2050. However, traditional renewable energy technologies, such as solar and wind power, require additional technologies to provide on-demand and continuous electricity due to their intermittent nature, leading to increasing focus on hydrogen fuel cells for stationary power generation. Market intelligence firm IDTechEx provides comprehensive coverage of the stationary fuel cell market, including key application areas, fuel cell (FC) power generation mode segmentation, and assessments of key trends expected in each industry. This analysis is accompanied by in-depth evaluations of different fuel cell technologies and benchmarking of their key specifications. Co-author of the report, Maia Benstead, a technology analyst at IDTechEx, suggests that through this detailed market analysis, IDTechEx predicts the stationary fuel cell market will exceed $8 billion by 2035.

[0003] With increasing energy demand and global demand for green electricity, hydrogen fuel cell power generation will be applied to more industries in the future. However, larger hydrogen fuel cell power generation devices will generate a lot of heat. This heat can be recovered through waste heat recovery technology and used in industry or daily life for heating equipment and domestic water supply. The remaining heat is discharged into the air through a cooling system. Summary of the Invention

[0004] Technical problem solved: To address the above-mentioned technical problems, this invention provides a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station, which effectively manages the hydrogen fuel cell power generation system, improves the power generation efficiency of the power generation system and the lifespan of the fuel cell; and reduces the energy consumption of the overall heat dissipation system through waste heat recovery, using the recovered heat for heating and domestic water use.

[0005] Technical solution: A waste heat recovery and cooling system for a stationary hydrogen fuel cell power station includes a primary-side heat dissipation module, a secondary-side heat dissipation module, and a waste heat recovery module. In the stationary hydrogen fuel cell power station, the cooler of the fuel cell stack absorbs the waste heat of the stack and converts the cold medium into a hot medium. The hot medium undergoes heat exchange sequentially through the secondary-side heat dissipation module, the waste heat recovery module, and the primary-side heat dissipation module. The resulting cold medium flows back to the cooler for the next heat exchange, ensuring stable power generation of the power station.

[0006] Preferably, the secondary-side heat dissipation module includes a plurality of secondary-side heat dissipation units, each of which includes a water-cooled plate heat exchanger. The heat medium inlet of the water-cooled plate heat exchanger is connected to the heat medium outlet of the cooler. The heat medium after heat exchange enters the waste heat recovery module through the heat medium outlet of the water-cooled plate heat exchanger. The cold medium outlet of the primary-side heat dissipation module is connected to the cold medium inlet of the water-cooled plate heat exchanger. The cold medium after heat exchange enters the cooler through the cold medium outlet of the water-cooled plate heat exchanger.

[0007] Furthermore, a temperature sensor and a flow meter are installed on the heat medium inlet pipe of the water-cooled plate heat exchanger, a proportional valve and a flow meter are installed on the cold medium inlet pipe of the water-cooled plate heat exchanger, and a temperature sensor is installed on the cold medium outlet pipe of the water-cooled plate heat exchanger.

[0008] Preferably, the waste heat recovery module includes a heating heat exchanger, the heat medium inlet of which is connected to the heat medium outlet of a water-cooled plate heat exchanger. After heat exchange, the heat medium enters the domestic water heat exchanger through the heat medium outlet of the heating heat exchanger for another heat exchange before entering the primary side heat dissipation module. The heating return water is heat exchanged through the heating heat exchanger to obtain heating water supply, and the tap water replenishment is heat exchanged through the domestic water heat exchanger to obtain domestic water supply.

[0009] Furthermore, a domestic water tank is installed on the domestic water supply pipeline. Water is replenished into the domestic water tank by tap water. The side wall opening of the domestic water tank is connected to the drainage pool through a drain pipe. The drain pipe is equipped with an electromagnetic switch valve and a manual ball valve. The side wall opening of the drain pipe between the electromagnetic switch valve and the manual ball valve is connected to the bottom opening of the domestic water tank through a branch pipe. The branch pipe is equipped with a manual ball valve.

[0010] Furthermore, the heating medium inlet pipe of the heating heat exchanger is equipped with a manual ball valve, a filter, a pressure sensor, and a temperature sensor; the heating water supply pipe of the heating heat exchanger is equipped with a temperature sensor, a flow meter, and a manual ball valve; the heating return water pipe of the heating heat exchanger is equipped with a temperature sensor, a variable frequency water pump, a filter, and a manual ball valve, and a constant pressure water supply device is installed on the pipe between the variable frequency water pump and the filter. The constant pressure water supply device includes a water supply tank and an expansion tank. The water supply tank is connected to the heating water supply pipe through a water supply pipe, and the water supply pipe is equipped with a variable frequency water pump and a manual ball valve. The side wall inlet of the expansion tank is connected to the side wall of the tap water supply pipe through an expansion tank inlet pipe, and the expansion tank inlet pipe is equipped with... The system includes a manual ball valve and a solenoid valve; temperature and pressure sensors are installed at both ends of the heating medium outlet pipe of the heating heat exchanger and the domestic water heat exchanger; a first temperature sensor, a pressure sensor, a flow meter, a second temperature sensor, and a manual ball valve are sequentially installed on the heating medium outlet pipe of the domestic water heat exchanger; a temperature sensor, a variable frequency water pump, a solenoid valve, a first manual ball valve, a filter, and a second manual ball valve are installed on the tap water supply pipe of the domestic water heat exchanger; a temperature sensor and a flow meter are installed on the domestic water supply pipe between the domestic water heat exchanger and the domestic water tank; and a variable frequency water pump and a manual ball valve are installed on the pipe from the domestic water tank to the domestic water supply.

[0011] Preferably, the primary-side heat dissipation module includes several primary-side heat dissipation units, each including a dry cooler. The heat medium inlet of the dry cooler is connected to the heat medium outlet of the domestic water heat exchanger in the waste heat recovery module. The cold medium outlet of the dry cooler is connected to the cold medium inlet of the water-cooled plate heat exchanger via a first pipe. The first pipe is equipped with a manual ball valve, a variable frequency water pump, a pressure sensor, and a filter. The side wall of the first pipe is connected to the water supply tank via a second pipe. The second pipe is equipped with a check valve, a solenoid valve, a manual ball valve, and a pressure sensor.

[0012] Preferably, it also includes an auxiliary heat dissipation module, which includes several auxiliary heat dissipation units. Each auxiliary heat dissipation unit includes a radiator assembly. The heat medium inlet of the radiator assembly is connected to the heat medium outlet of the intercooler, the air compressor, and the DC / DC converter. The cold medium obtained after heat exchange flows back to the intercooler, the air compressor, and the DC / DC converter.

[0013] Furthermore, a branch pipe is provided on the cold medium inlet pipe that returns the cold medium to the intercooler, air compressor and DC / DC converter, and the branch pipe is connected to the water supply tank.

[0014] Furthermore, the heat medium inlet pipe of the radiator assembly is equipped with a pressure sensor, a temperature sensor, an expansion tank, and a variable frequency water pump; the heat medium outlet pipe of the radiator assembly is equipped with a pressure sensor, a manual ball valve, a solenoid valve, and a check valve; and the cold medium inlet pipes of the intercooler, air compressor, and DC / DC converter are equipped with filters, temperature sensors, and pressure sensors.

[0015] Beneficial effects: The present invention discloses a waste heat recovery and cooling system for a hydrogen fuel cell stationary power station. It adopts an overall heat management scheme. For megawatt-level power stations, each stack exchanges heat through a secondary heat dissipation module and is cooled by two sets of cooling power systems (primary heat dissipation units) of the primary heat dissipation module, which can more accurately control the heat dissipation effect. In the waste heat recovery and cooling system of a stationary hydrogen fuel cell power station of the present invention, the coolant and the stack coolant do not come into direct contact. At the same time, stainless steel water-cooled plate heat exchangers are used for heat exchange, which ensures that the coolant entering the stack is not contaminated by the outside world, and the conductivity is not easy to increase, which greatly increases the life of the fuel cell. In the waste heat recovery and cooling system of a hydrogen fuel cell stationary power station, all power modules of the primary side heat dissipation module and the secondary side heat dissipation module can be frequency-controlled. Through software calculation, the water pump flow and fan speed are intelligently controlled, thereby precisely controlling the cooling water temperature. This invention discloses a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station. The waste heat recovery module controls whether waste heat recovery is needed based on the actual heat generation and actual demand through a three-way valve. The heating system uses a variable frequency water pump and a detachable heat exchanger to control heat recovery and ensure the required heating temperature. The domestic water system utilizes the remaining heat after the heating system is recovered. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to the present invention. Figure 2 This is a schematic diagram of the waste heat recovery and cooling system of a hydrogen fuel cell stationary power station according to the present invention; Figure 3 This is an enlarged view of the secondary heat dissipation module in a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to the present invention. Figure 4 This is an enlarged structural view of the waste heat recovery module in a waste heat recovery and cooling system for a hydrogen fuel cell stationary power station according to the present invention. Figure 5 This is an enlarged view of the primary-side heat dissipation module in a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to the present invention. Figure 6This is an enlarged structural view of the auxiliary heat dissipation module in a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to the present invention. The following items are listed in the diagram: 100, Secondary heat dissipation module; 101, Water-cooled plate heat exchanger; 200, Waste heat recovery module; 201, Heating heat exchanger; 202, Domestic water heat exchanger; 203, Domestic water tank; 300, Primary heat dissipation module; 301, Dry cooler; 400, Auxiliary heat dissipation module; 401, Radiator assembly; 402, Intercooler; 403, Air compressor; 404, DC / DC converter; 1, Solenoid three-way valve; 2, Temperature sensor; 3, Flow meter; 4, Proportional valve; 5, Drainage tank; 6, Solenoid switch valve; 7, Manual ball valve; 8, Filter; 9, Pressure sensor; 10, Variable frequency water pump; 11, Makeup water tank; 12, Expansion tank; 13, Check valve; 14, Solenoid valve; 15, Expansion tank. Detailed Implementation

[0017] The present invention will be described in detail below with reference to specific embodiments: Example 1

[0018] like Figure 1 As shown, a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station includes a primary-side heat dissipation module 300, a secondary-side heat dissipation module 100, and a waste heat recovery module 200. In the stationary hydrogen fuel cell power station, the cooler of the fuel cell stack absorbs the waste heat of the stack and converts the cold medium into a hot medium. The hot medium undergoes heat exchange sequentially through the secondary-side heat dissipation module 100, the waste heat recovery module 200, and the primary-side heat dissipation module 300. The resulting cold medium flows back to the cooler for the next heat exchange, ensuring stable power generation of the power station.

[0019] Specifically, such as Figure 2 As shown, the secondary-side heat dissipation module 100 includes four secondary-side heat dissipation units. Each secondary-side heat dissipation unit includes a water-cooled heat exchanger 101. The heat medium inlet of the water-cooled heat exchanger 101 is connected to the heat medium outlet of the cooler. The heat medium after heat exchange enters the waste heat recovery module 200 through the heat medium outlet of the water-cooled heat exchanger 101 and the main pipeline. An electromagnetic three-way valve 1 is provided on the main pipeline. The cold medium outlet of the primary-side heat dissipation module 300 is connected to the cold medium inlet of the water-cooled heat exchanger 101. The cold medium after heat exchange enters the cooler through the cold medium outlet of the water-cooled heat exchanger 101.

[0020] The heat medium inlet pipe of the water-cooled plate heat exchanger 101 is equipped with a temperature sensor 2 and a flow meter 3, the cold medium inlet pipe of the water-cooled plate heat exchanger 101 is equipped with a proportional valve 4 and a flow meter 3, and the cold medium outlet pipe of the water-cooled plate heat exchanger 101 is equipped with a temperature sensor 2.

[0021] The aforementioned waste heat recovery module 200 has a container structure and recovers heat for heating and domestic water use. It includes a heating heat exchanger 201, whose heat medium inlet is connected to the heat medium outlet of a water-cooled plate heat exchanger 101. After heat exchange, the heat medium enters the domestic water heat exchanger 202 through the heat medium outlet of the heating heat exchanger 201 for another heat exchange before entering the primary side heat dissipation module 300. The heating return water is heat exchanged through the heating heat exchanger 201 to obtain heating water supply, and the tap water replenishment is heat exchanged through the domestic water heat exchanger 202 to obtain domestic water supply.

[0022] A domestic water tank 203 is installed on the domestic water supply pipeline. The domestic water tank 203 is an insulated tank. Tap water enters the domestic water tank 203 through a water supply pipe. After heat exchange with the hot water flowing into the domestic water heat exchanger 202, the water in the domestic water tank 203 is kept at a constant temperature of 47°C. When in use, tap water is continuously replenished into the domestic water tank 203 through a water supply device (water pump). The side wall opening of the domestic water tank 203 is connected to the drainage pool 5 through a drain pipe. The drain pipe is equipped with an electromagnetic switch valve 6 and a manual ball valve 7. The side wall opening of the drain pipe between the electromagnetic switch valve 6 and the manual ball valve 7 is connected to the bottom opening of the domestic water tank 203 through a branch pipe. The branch pipe is equipped with a manual ball valve 7 for manual drainage. When the electromagnetic switch valve 6 malfunctions, or when the domestic water tank 203 is not used for a long time, or when the domestic water tank 203 is scaled or under maintenance, drainage can be carried out through the branch pipe.

[0023] The heating medium inlet pipe of the aforementioned heating heat exchanger 201 is equipped with a manual ball valve 7, a filter 8, a pressure sensor, and a temperature sensor; the heating water supply pipe of the heating heat exchanger 201 is equipped with a temperature sensor 2, a flow meter 3, and a manual ball valve 7; the heating return water pipe of the heating heat exchanger 201 is equipped with a temperature sensor 2, a variable frequency water pump 10, a filter 8, and a manual ball valve 7, and a constant pressure water supply device is provided on the pipe between the variable frequency water pump 10 and the filter 8. The constant pressure water supply device includes a water supply tank 11 and an expansion tank 12. The water supply tank 11 is connected to the heating water supply pipe through a water supply pipe, and the water supply pipe is equipped with a variable frequency water pump 10 and a manual ball valve 7. The side wall inlet of the expansion tank 12 is connected to the side wall of the tap water supply pipe through an expansion tank inlet pipe, and the expansion tank inlet pipe is equipped with a manual ball valve 7 and a... The heating medium outlet pipe of the heating heat exchanger 201 is equipped with a temperature sensor 2 and a pressure sensor 9 at one end near the heating heat exchanger 201 and the other end near the domestic water heat exchanger 202. The heating medium outlet pipe of the domestic water heat exchanger 202 is equipped with a first temperature sensor, a pressure sensor 9, a flow meter 3, a second temperature sensor, and a manual ball valve 7 in sequence. The tap water supply pipe of the domestic water heat exchanger 202 is equipped with a temperature sensor 2, a variable frequency water pump 10, a solenoid switch valve 6, a first manual ball valve, a filter 8, and a second manual ball valve. The domestic water supply pipe between the domestic water heat exchanger 202 and the domestic water tank 203 is equipped with a temperature sensor 2 and a flow meter 3. The pipe from the domestic water tank 203 to the domestic water supply is equipped with a variable frequency water pump 10 and a manual ball valve 7.

[0024] The primary-side heat dissipation module 300 includes two primary-side heat dissipation units, which are connected to two secondary-side heat dissipation units. The primary-side heat dissipation unit includes a dry cooler 301. The heat medium inlet of the dry cooler 301 is connected to the heat medium outlet of the domestic water heat exchanger 202 in the waste heat recovery module 200. The cold medium outlet of the dry cooler 301 is connected to the cold medium inlet of the water-cooled plate heat exchanger 101 through a first pipe. The first pipe is equipped with a manual ball valve 7, a variable frequency water pump 10, a pressure sensor 9, and a filter 8 with a pore size of 200μm. The side wall of the first pipe is connected to the water supply tank 11 through a second pipe. The second pipe is equipped with a one-way valve 13, a solenoid valve 14, a manual ball valve 7, and a pressure sensor 9. Example 2

[0025] A waste heat recovery and cooling system for a hydrogen fuel cell stationary power station, based on Embodiment 1, further includes an auxiliary heat dissipation module 400. The auxiliary heat dissipation module 400 includes two auxiliary heat dissipation units, one of which is connected to a secondary side heat dissipation unit. The auxiliary heat dissipation unit includes a radiator assembly 401 with a fan. The heat medium inlet of the radiator assembly 401 is connected to the heat medium outlet of the intercooler 402, the air compressor 403, and the DC / DC converter 404. The cold medium obtained after heat exchange flows back to the intercooler 402, the air compressor 403, and the DC / DC converter 404. A branch pipe is provided on the cold medium inlet pipe that flows back to the intercooler 402, the air compressor 403, and the DC / DC converter 404. The branch pipe is connected to the water supply tank 11. The heat medium inlet pipe of the radiator assembly 401 is equipped with a pressure sensor 9, a temperature sensor 2, an expansion tank 15, and a variable frequency water pump 10. The heat medium outlet pipe of the radiator assembly 401 is equipped with a pressure sensor 9, a manual ball valve 7, a solenoid valve 14, and a check valve 13. The cold medium inlet pipes of the intercooler 402, the air compressor 403, and the DC / DC converter 404 are equipped with a filter 8 with a pore size of 50μm, a temperature sensor 2, and a pressure sensor 9.

[0026] This invention discloses a waste heat recovery and cooling system for a stationary hydrogen fuel cell power station. It employs an integrated heat management scheme for megawatt-level power stations. Each fuel cell stack exchanges heat through a secondary-side heat dissipation module, while the primary-side heat dissipation module utilizes two cooling power systems and primary-side heat dissipation units for cooling, allowing for more precise control of heat dissipation. The system ensures that the coolant does not directly contact the fuel cell stack coolant, and uses stainless steel water-cooled heat exchangers for heat exchange, preventing external contamination of the coolant entering the stack and minimizing conductivity increases, thus significantly extending fuel cell lifespan. All power modules in both the primary and secondary heat dissipation modules are frequency-controlled, intelligently controlling water pump flow rate and fan speed through software calculations to precisely control cooling water temperature. The waste heat recovery module controls whether waste heat recovery is needed based on actual heat generation and demand via a three-way valve. The heating system uses a frequency-controlled water pump and a detachable heat exchanger for heat recovery control, ensuring the required heating temperature. The domestic water system utilizes the remaining heat after the heating system's heat recovery.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste heat recovery and cooling system for a stationary hydrogen fuel cell power station, characterized in that: Includes a primary side heat dissipation module (300), a secondary side heat dissipation module (100), and a waste heat recovery module (200). In a hydrogen fuel cell stationary power station, the stack cooler absorbs the waste heat of the stack and converts the cold medium into a hot medium. The hot medium undergoes heat exchange sequentially through the secondary side heat dissipation module (100), the waste heat recovery module (200), and the primary side heat dissipation module (300). The resulting cold medium flows back to the cooler for the next heat exchange, ensuring stable power generation of the power station. The secondary heat dissipation module (100) includes several secondary heat dissipation units, each including a water-cooled heat exchanger (101). The heat medium inlet of the water-cooled heat exchanger (101) is connected to the heat medium outlet of the cooler. The heat medium after heat exchange enters the waste heat recovery module (200) through the heat medium outlet of the water-cooled heat exchanger (101). The cold medium outlet of the primary heat dissipation module (300) is connected to the cold medium inlet of the water-cooled heat exchanger (101). The cold medium after heat exchange enters the cooler through the cold medium outlet of the water-cooled heat exchanger (101). The waste heat recovery module (200) includes a heating heat exchanger (201). The heat medium inlet of the heating heat exchanger (201) is connected to the heat medium outlet of the water-cooled plate heat exchanger (101). After heat exchange, the heat medium enters the domestic water heat exchanger (202) through the heat medium outlet of the heating heat exchanger (201) for another heat exchange and then enters the primary side heat dissipation module (300). The heating return water is heat exchanged through the heating heat exchanger (201) to obtain heating water supply. The tap water replenishment is heat exchanged through the domestic water heat exchanger (202) to obtain domestic water supply. The heating medium inlet pipe of the heating heat exchanger (201) is equipped with a manual ball valve, a filter, a pressure sensor and a temperature sensor; the heating water supply pipe of the heating heat exchanger (201) is equipped with a temperature sensor, a flow meter and a manual ball valve.

2. The waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 1, characterized in that: A temperature sensor and a flow meter are installed on the pipe of the heat medium inlet of the water-cooled plate heat exchanger (101), a proportional valve and a flow meter are installed on the pipe of the cold medium inlet of the water-cooled plate heat exchanger (101), and a temperature sensor is installed on the pipe of the cold medium outlet of the water-cooled plate heat exchanger (101).

3. The waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 1, characterized in that: A domestic water tank (203) is provided on the domestic water supply pipeline. Water is replenished into the domestic water tank (203) by tap water. The side wall opening of the domestic water tank (203) is connected to the drainage pool through a drain pipe. The drain pipe is equipped with an electromagnetic switch valve and a manual ball valve. The side wall opening of the drain pipe between the electromagnetic switch valve and the manual ball valve is connected to the bottom opening of the domestic water tank (203) through a branch pipe. The branch pipe is equipped with a manual ball valve.

4. The waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 1, characterized in that: The heating return water pipe of the heating heat exchanger (201) is equipped with a temperature sensor, a variable frequency water pump, a filter, and a manual ball valve. A constant pressure water supply device is installed on the pipe between the variable frequency water pump and the filter. The constant pressure water supply device includes a water supply tank and an expansion tank. The water supply tank is connected to the heating water supply pipe via a water supply pipe. The water supply pipe is equipped with a variable frequency water pump and a manual ball valve. The side wall inlet of the expansion tank is connected to the side wall of the tap water supply pipe via an expansion tank inlet pipe. The expansion tank inlet pipe is equipped with a manual ball valve and a solenoid valve. The pipe of the heating medium outlet of the heating heat exchanger (201) is located at one end near the heating heat exchanger (201) and at the end near the domestic water outlet. Temperature sensors and pressure sensors are provided at one end of each heat exchanger (202); a first temperature sensor, a pressure sensor, a flow meter, a second temperature sensor, and a manual ball valve are sequentially provided on the heat medium outlet pipe of the domestic water heat exchanger (202); a temperature sensor, a variable frequency water pump, an electromagnetic switch valve, a first manual ball valve, a filter, and a second manual ball valve are provided on the tap water supply pipe of the domestic water heat exchanger (202); a temperature sensor and a flow meter are provided on the domestic water supply pipe between the domestic water heat exchanger (202) and the domestic water tank (203); a variable frequency water pump and a manual ball valve are provided on the pipe from the domestic water tank (203) to the domestic water supply.

5. The waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 1, characterized in that: The primary-side heat dissipation module (300) includes several primary-side heat dissipation units, each including a dry cooler (301). The heat medium inlet of the dry cooler (301) is connected to the heat medium outlet of the domestic water heat exchanger (202) in the waste heat recovery module (200). The cold medium outlet of the dry cooler (301) is connected to the cold medium inlet of the water-cooled plate heat exchanger (101) through a first pipe. The first pipe is equipped with a manual ball valve, a variable frequency water pump, a pressure sensor, and a filter. The side wall of the first pipe is connected to the water supply tank through a second pipe. The second pipe is equipped with a check valve, a solenoid valve, a manual ball valve, and a pressure sensor.

6. The waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 5, characterized in that: It also includes an auxiliary heat dissipation module (400), which includes several auxiliary heat dissipation units. Each auxiliary heat dissipation unit includes a radiator assembly (401). The heat medium inlet of the radiator assembly (401) is connected to the heat medium outlet of the intercooler (402), the air compressor (403), and the DC / DC converter (404). The cold medium obtained after heat exchange flows back to the intercooler (402), the air compressor (403), and the DC / DC converter (404).

7. A waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 6, characterized in that: A branch pipe is provided on the cold medium inlet pipe that returns the cold medium to the intercooler (402), the air compressor (403) and the DC / DC converter (404), and the branch pipe is connected to the water supply tank.

8. A waste heat recovery and cooling system for a stationary hydrogen fuel cell power station according to claim 7, characterized in that: The heat medium inlet pipe of the radiator assembly (401) is equipped with a pressure sensor, a temperature sensor, an expansion tank and a variable frequency water pump. The heat medium outlet pipe of the radiator assembly (401) is equipped with a pressure sensor, a manual ball valve, a solenoid valve and a check valve. The cold medium inlet pipes of the intercooler (402), the air compressor (403) and the DC / DC converter (404) are equipped with filters, temperature sensors and pressure sensors.

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