CN220958974U - Cold-heat exchange system - Google Patents

Abstract

The application provides a cold and heat exchange system, wherein one end of a heat transmission device in the cold and heat exchange system is connected with an SOFC module in an SOFC power supply circuit, and the other end of the heat transmission device is connected with a cold and heat exchange unit; the SOFC module comprises one or more SOFC; the heat transmission device is configured to transmit heat energy in the SOFC module to the cold-heat exchange unit; the cold-heat exchange unit is configured to exchange heat with the cold-heat exchange medium of the target area; the water source heat pump unit is configured to exchange heat with the heat exchange medium of the target area and transmit heat energy after the heat exchange to external equipment. According to the application, the heat energy generated by the power supply of the SOFC drives the cold-heat exchange unit to exchange heat with the target area, the heat energy is not needed to be provided for the cold-heat exchange unit by fuel combustion, the energy consumption is reduced, and the SOFC only generates water and carbon dioxide in the power generation process, so that the carbon emission can be reduced, and the pollution to the environment is reduced.

Description

Cold-heat exchange system

Technical Field

The application relates to the field of power supply and distribution, in particular to a cold-hot exchange system.

Background

Electrical energy for domestic and commercial use is derived mainly from power plants. At present, although power plants are classified into hydroelectric power generation, wind power generation, nuclear power generation and thermal power generation, the sources of domestic electricity and commercial electricity in China are mainly thermal power generation in consideration of stability of output power, controllability and usability of a power generation process.

Thermal power generation is a mode of generating electric energy by combusting fuels such as coal, and the thermal power generation not only needs a large amount of coal resources, but also generates a large amount of carbon dioxide when the coal is combusted, so that the environment is polluted very.

In addition, a large consumer with high energy consumption and high heat dissipation capacity, such as a data center, needs to further solve the energy efficiency problem.

Disclosure of utility model

Accordingly, an object of the embodiments of the present application is to provide a cold-heat exchange system, which can reduce carbon emission, reduce pollution of power supply to the environment, and solve the energy efficiency problem.

In a first aspect, an embodiment of the present application provides a heat exchange system, including: the system comprises an SOFC power supply circuit, a heat transmission device, a cold-heat exchange unit and a water source heat pump unit; one end of the heat transmission device is connected with the SOFC module in the SOFC power supply circuit, and the other end of the heat transmission device is connected with the cold-heat exchange unit; the SOFC module comprises one or more SOFC; the heat transfer device is configured to transfer thermal energy in the SOFC module to the cold-heat exchanger unit; the cold-heat exchange unit is configured to exchange heat with a cold-heat exchange medium in a target area; the water source heat pump unit is configured to exchange heat with the heat exchange medium of the target area and transmit heat energy after the heat exchange to external equipment.

In the implementation process, by arranging the SOFC to generate power, only water is generated in the power generation process of the SOFC, and carbon dioxide is not generated, so that carbon emission generated by power generation can be greatly reduced, and pollution to the environment in the power generation and power utilization processes is reduced. In addition, because a large amount of heat energy can be generated in the power generation process of the SOFC, the heat energy generated by the SOFC can be transmitted to the cold-heat exchange unit by the heat transmission device arranged between the SOFC module and the cold-heat exchange unit, so that the cold-heat exchange unit uses the heat energy generated by the SOFC module as a power source to drive the cold-heat exchange unit to perform cold-heat exchange with the target area. Because the cell heat energy is the heat energy generated by the SOFC in the SOFC power supply circuit for supplying power to the load, the heat energy is not needed to be provided for the cold-heat exchange unit through fuel combustion, so that the energy consumption can be reduced, and the heat energy generated by the SOFC for supplying power to the load is transmitted to the cold-heat exchange unit, so that the temperature of the area where the SOFC is positioned can be reduced, the loss of equipment in the SOFC power supply circuit caused by overhigh temperature is prevented, and the safety of the equipment is improved. In addition, since the SOFC has high heat release temperature, the temperature generated by SOFC is used as a power source to drive the heat exchange unit to exchange heat with the target area, so that the energy efficiency ratio of the heat exchange unit can be improved.

In one embodiment, the SOFC power circuit further comprises: a transformer and an outlet cabinet; the power outlet of the SOFC power supply circuit is connected with the power inlet of the transformer; the power outlet of the transformer is connected with the power inlet of the outlet cabinet; the power outlet of the outlet cabinet is connected with the load of the target area; wherein the SOFC power supply circuit is configured to supply power to the load through the transformer and the outlet cabinet.

In the implementation process, the load is powered by adopting an SOFC (i.e. a solid oxide fuel cell) to replace or partially replace the mode of mains supply, diesel power generation and the like. At present, commercial power supply mainly depends on thermal power generation, the thermal power generation mainly depends on a power generation mode of power generation by burning coal and the like, and diesel power generation is a power generation mode of power generation by burning diesel. Whether mains supply or diesel power generation, more carbon emissions can be generated in the power generation process. And the SOFC generates electricity, and only water is generated in the electricity generation process, so that carbon dioxide is not generated, carbon emission generated by electricity generation can be greatly reduced, and pollution to the environment in the electricity generation and electricity utilization processes is reduced.

In one embodiment, the SOFC power circuit further comprises: a standby power supply and an incoming line cabinet; the standby power supply is connected with the power inlet of the incoming line cabinet; the power outlet of the wire inlet cabinet is connected with the power inlet of the transformer; the backup power supply is configured to power the load when the SOFC power circuit is shut down.

In the implementation process, the standby power supply is arranged on the SOFC power supply circuit, so that when the SOFC is stopped due to faults or performance decay, the standby power supply can be connected into the transformer in time, and the standby power supply is used for continuously supplying power to a load, so that the power failure time caused by stopping is reduced, and the power supply stability of the SOFC power supply circuit is improved.

In one embodiment, the SOFC power circuit further comprises: a switching device; the first end of the switching device is connected with the power outlet of the SOFC, and the second end of the switching device is connected with the power outlet of the incoming line cabinet; the third end of the switching device is connected with the power inlet of the transformer; the switching device is configured to switch the SOFC power supply circuit or the backup power supply to supply power to the load.

In the implementation process, the switching device is arranged, so that flexible switching between the standby power supply and the SOFC can be realized, and further, corresponding power supplies can be flexibly switched to supply power for loads according to actual conditions, and the power supply stability of the SOFC power supply circuit is improved.

In one embodiment, the heat and cold exchange unit includes: a generator, a cold-heat exchange device and an absorber; the cold-heat exchange device comprises a condenser and an evaporator; the generator is internally provided with a lithium bromide dilute solution, and the lithium bromide dilute solution is configured to generate water vapor under the action of heat energy of the battery; wherein, the source of the cell heat energy comprises heat energy generated by the SOFC power supply circuit for supplying power to a load.

In the implementation process, the heat energy of the battery is used as a power source in the cold-heat exchange unit, and the cold-heat exchange unit is driven to exchange heat with the target area. Because the cell heat energy is the heat energy generated by the SOFC in the SOFC power supply circuit for supplying power to the load, the heat energy is not needed to be provided for the cold-heat exchange unit through fuel combustion, so that the energy consumption can be reduced, and the heat energy generated by the SOFC for supplying power to the load is transmitted to the cold-heat exchange unit, so that the temperature of the area where the SOFC is positioned can be reduced, the loss of equipment in the SOFC power supply circuit caused by overhigh temperature is prevented, and the safety of the equipment is improved. In addition, since the SOFC has high heat release temperature, the temperature generated by SOFC is used as a power source to drive the heat exchange unit to exchange heat with the target area, so that the energy efficiency ratio of the heat exchange unit can be improved.

In one embodiment, the heat exchange device further comprises: a throttle valve; the throttle valve is arranged between the condenser and the evaporator, and two ends of the throttle valve are respectively connected with the condenser and the evaporator.

In the implementation process, the throttle valve is arranged between the condenser and the evaporator, so that the quantity of the refrigerant flowing into the evaporator can be controlled, the waste of the refrigerant is reduced, and resources are saved.

In one embodiment, the heat transfer device is a heat transfer pipe or a heat and cold exchange device.

In one embodiment, the cold heat exchange medium of the target area is chilled water in a target area warm water system.

In the implementation process, the cooling and temperature reduction of the chilled water in the target area heating and water-supplying system is realized through the cold-heat exchange unit and the water source heat pump unit so as to realize the refrigeration of the target area.

In one embodiment, one side of the water source heat pump unit is connected to the target area, and the other side of the water source heat pump unit is connected to the external device.

In one embodiment, the water source heat pump unit includes: a chilled water pump; the chilled water pump is arranged on a chilled water circulation pipeline between the water source heat pump unit and the target area.

In the implementation process, the water source heat pump unit is used for realizing heat exchange between the target area and the external equipment, so that the target area can be cooled, the cooling load of the target area is reduced, and the heat energy after cold and heat exchange can be transmitted to the external equipment through the water source heat pump unit, so that the area where the external equipment is located does not need to be burnt into heat supply or heating liquid through fuel in addition, and the energy consumption can be reduced.

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an SOFC power supply circuit according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a heat and cold exchange unit according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a heat and cold exchange system according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the operation of a water source heat pump unit according to an embodiment of the present application;

fig. 5 is a schematic diagram of a heat and cold exchange system according to another embodiment of the present application.

Description of the drawings: 100-SOFC power supply circuit, 11-SOFC module, 110-SOFC, 120-transformer, 130-outlet cabinet, 140-switching device, 200-cold and heat exchange unit, 210-generator, 220-cold and heat exchange device, 221-condenser, 222-evaporator, 223-throttle valve, 230-absorber, 300-heat transmission device, 20-target area, 30-external equipment, 31-user, 32-factory area and 400-water source heat pump unit.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships conventionally visited when applying for a product, are merely for convenience in describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

As the environment deteriorates, in order to reduce environmental pollution, a carbon neutralization target is proposed. The hydrogen fuel cell industry is rapidly developing as one of important subdivision areas for achieving the goal of carbon neutralization.

At present, in a power supply and distribution system, the main source of electric energy is a power plant, and the power plant mainly depends on thermal power generation, so that the environment is polluted, and the carbon neutralization is not facilitated.

And long-term researches show that with the development of digital economy, the sizes and the numbers of the monomers of the data center, the machine room and the like are continuously increased. And data centers, machine rooms, etc. are often large consumers of energy and heat. If the heat energy of the data center, the machine room and other areas is not timely reduced, the energy consumption of the equipment of the data center, the machine room and other areas can be further increased under the high-temperature environment, and the equipment is easy to damage. Therefore, how to utilize the energy generated in the data center, the machine room and other areas to reduce the energy consumption of the equipment becomes a great problem.

In view of this, the present application proposes a heat exchange system. The hydrogen fuel cell is used for supplying power to the load of the target area, so that the dependence on the power plant is reduced, the amount of coal burnt by the power plant due to power generation is further reduced, and the pollution to the environment is reduced. In addition, the heat generated by the hydrogen fuel cell when supplying power to the load is input into the cold-heat exchange unit containing the lithium bromide solution, and the heat is used as a power source of the cold-heat exchange unit, so that the utilization rate of the heat generated by the hydrogen fuel cell when supplying power to the load is improved, and the energy consumption can be reduced. Meanwhile, the cold-heat exchange unit can refrigerate the target area. Finally, by arranging the water source heat pump unit and utilizing the heat energy of the target area, external equipment is supplied to use or heat, and the area where the external equipment is located does not need to burn fuel to supply heat or heat liquid, so that the energy consumption can be further reduced.

The target area here may be a data center, a factory building, an office building, or the like. The target area may be determined according to the actual situation.

In order to facilitate understanding of the technical solution of the present application, the SOFC in the embodiments of the present application is explained below:

SOFC: solid oxide fuel cells. And the SOFC is the fuel cell with highest power generation efficiency, and the power generation efficiency is more than 60%. If the heat and power cogeneration is realized, the energy utilization efficiency can reach 80 percent.

The chemical reaction formula of the SOFC in operation is as follows: the anode is: h ₂→2H⁺+2e^-; the cathode is: 2H ⁺+2e^-+1/2O₂→H₂ O.

Obviously, the working principle of the SOFC can be understood as a "reverse" process of water electrolysis, and a loop is formed by high-temperature electrochemical reaction. SOFC fuel cells are all-solid-state chemical power generation devices that directly convert chemical energy stored in fuels and oxidants to electrical energy at moderate to high temperatures with high efficiency and environmental friendliness, without the need for catalysis with precious metal catalysts. Not only can reduce carbon emission, but also can save cost. In addition, the fuel that can be used as the SOFC is of a large variety, such as hydrogen, natural gas, methanol, coal gas, etc., and can be used as the fuel of the SOFC. If hydrogen is used as fuel, the product is only water, that is, no carbon dioxide is discharged in the reaction process, so that the method is environment-friendly.

As shown in fig. 1, an SOFC power supply circuit 100 provided in an embodiment of the present application includes: SOFC110, transformer 120, and outlet cabinet 130.

Wherein, the electric outlet of SOFC110 is connected with the electric inlet of transformer 120; the power outlet of the transformer 120 is connected with the power inlet of the outlet cabinet 130; the outlet of the outlet cabinet 130 is connected to the load of the target area.

SOFC110 is here configured to power a load through transformer 120 and outlet cabinet 130. When the SOFC110 is used for supplying power to a load, chemical reaction occurs through chemical energy in fuel and oxidant, and a large amount of heat energy can be generated at the same time of generating electric energy. In addition, when the SOFC110 is subjected to chemical reaction, the carbon content of the product is low, and the SOFC is environment-friendly.

Alternatively, the SOFC110 may be one or more. The number of the corresponding outlet cabinets 130 and the number of the transformers 120 may be one or more.

The transformer 120 is used to convert the voltage provided by the SOFC110 into a voltage that can be borne by a load.

The outlet cabinet 130 may be a power distribution switchgear. The power distribution switch cabinet may include a high voltage switchgear assembly and a low voltage power distribution cabinet. For example, the outlet cabinet 130 may be a GGD ac low voltage power distribution cabinet, a GCK low voltage switchgear, a GCS low voltage draw-out switchgear, a MNS low voltage draw-out switchgear, a KYN series switchgear, an XGN series switchgear, or the like.

In the implementation process, the SOFC110 is adopted to replace the modes of mains supply, diesel engine power generation and the like to supply power to the load. At present, commercial power supply mainly depends on thermal power generation, the thermal power generation mainly depends on a power generation mode of power generation by burning coal and the like, and diesel power generation is a power generation mode of power generation by burning diesel. Whether mains supply or diesel power generation, more carbon emissions can be generated in the power generation process. And the SOFC110 generates electricity, because the SOFC110 only generates water in the electricity generation process, carbon dioxide is not generated, carbon emission generated by electricity generation can be greatly reduced, and the method is environment-friendly.

In one possible implementation, the SOFC power supply circuit 100 further includes: standby power supply and inlet wire cabinet.

The standby power supply is connected with the power inlet of the incoming line cabinet; the outlet of the inlet wire cabinet is connected with the inlet wire of the transformer 120;

The backup power supply is configured to power the load of the target area when SOFC110 is shutdown. The standby power supply can be a commercial power bus, a storage battery, a diesel generator and the like. The backup power source may be one or more. The type and the number of the standby power sources can be adjusted according to actual conditions.

Alternatively, the transformer 120 may include multiple power inlets to connect to one or more power sources.

The inlet wire cabinet can be one or more, and the inlet wire cabinet can be a power distribution switch cabinet. The power distribution switch cabinet may include a high voltage switchgear assembly and a low voltage power distribution cabinet. For example, the incoming line cabinet can be a GGD type alternating current low-voltage power distribution cabinet, a GCK low-voltage switch cabinet, a GCS type low-voltage draw-out switch cabinet, an MNS type low-voltage draw-out complete set switch cabinet, a KYN series switch cabinet, an XGN series switch cabinet and the like. The number and the types of the incoming line cabinets can be adjusted according to actual conditions.

If the standby power supply is a commercial power bus, the commercial power bus is connected with the power inlet of the incoming line cabinet; the outlet of the inlet wire cabinet is connected with the first inlet wire of the transformer 120; the second power inlet of transformer 120 is connected to SOFC 110.

If the standby power supply is a commercial power bus and a diesel generator, the commercial power bus is connected with an electric inlet of the first inlet wire cabinet; the power outlet of the first wire inlet cabinet is connected with the first power inlet of the transformer 120; the diesel generator is connected with an electric inlet of the second inlet wire cabinet; the power outlet of the second inlet wire cabinet is connected with a second power inlet of the transformer 120; the third power inlet of transformer 120 is connected to SOFC 110.

In the above implementation process, by setting the standby power supply in the SOFC power supply circuit 100, when the SOFC110 is shut down due to a failure or performance degradation, the standby power supply can be timely connected to the transformer 120, so as to continue to supply power to the load through the standby power supply, thereby reducing the power failure time caused by the shutdown and improving the power supply stability of the SOFC power supply circuit 100.

In one possible implementation, SOFC power supply circuit 100 further includes: a switching device 140.

Wherein, a first end of the switching device 140 is connected with an electric outlet of the SOFC110, and a second end of the switching device 140 is connected with an electric outlet of the incoming line cabinet; the third terminal of the switching device 140 is connected to the power inlet of the transformer 120.

Switching device 140 is configured to switch SOFC110 or a backup power source to power a load. The switching device 140 may be a change-over switch, a relay, a rotary switch, etc. The switching device 140 may be selected according to the actual situation.

It will be appreciated that when SOFC power circuit 100 requires SOFC110 to power, the first end of switching device 140 and the third end of switching device 140 are on. When the SOFC power supply circuit 100 requires a backup power supply, the second terminal of the switching device 140 and the third terminal of the switching device 140 are turned on. The switching device 140 may be controlled manually, by an electrical signal, by a trigger signal, or the like, to switch the power supply connected to the transformer 120.

In the implementation process, by setting the switching device 140, flexible switching between the standby power supply and the SOFC110 can be realized, so that corresponding power supplies can be flexibly switched to supply power to the load according to actual situations, and the power supply stability of the SOFC power supply circuit 100 is improved.

As shown in fig. 2, a cooling and heating exchange unit 200 according to an embodiment of the present application includes: generator 210, heat exchange device 220, and absorber 230, the heat exchange device 220 may include one or more of a condenser 221, an evaporator 222, a compressor, a heat exchanger, and the like. The heat and cold exchange unit 200 may be a lithium bromide unit in which water is used as a refrigerant and lithium bromide is used as an absorbent.

One end of the generator 210 is connected to one end of the condenser 221 through a pipe, the other end of the generator 210 is connected to one end of the absorber 230 through a pipe, and the other end of the absorber 230 is connected to one end of the evaporator 222.

The lithium bromide solution in the generator 210 is a dilute lithium bromide solution, and the absorber 230 is provided with a concentrated lithium bromide solution. In general, the greater the concentration of lithium bromide solution, the greater its ability to absorb moisture under the same temperature conditions.

The heat exchange device 220 further includes: a throttle valve 223.

Wherein the throttle valve 223 is disposed between the condenser 221 and the evaporator 222, and both ends of the throttle valve 223 are connected to the condenser 221 and the evaporator 222, respectively. The throttle valve 223 is configured to be able to control the amount of refrigerant flowing into the evaporator 222.

Alternatively, the on-off of the throttle valve 223 may be controlled by a control signal, the on-off of the throttle valve 223 may be controlled by a human, the on-off of the throttle valve 223 may be controlled by a trigger signal such as pressure, temperature, etc. The control of the opening and closing of the throttle valve 223 can be adjusted according to the actual situation.

In the above implementation, by providing the throttle valve 223 between the condenser 221 and the evaporator 222, the amount of refrigerant flowing into the evaporator 222 can be controlled to reduce the waste of refrigerant and save resources.

The dilute lithium bromide solution in generator 210 generates water vapor under the influence of the heat energy of the battery. The source of the heat energy of the cell includes the heat energy generated by the SOFC110 in the SOFC power supply circuit 100 supplying power to the load of the target area. And the heat-exchange unit 200 is configured to exchange heat with the heat-exchange medium of the target area.

After the dilute lithium bromide solution is heated in the generator 210, water in the solution is continuously vaporized to generate steam; the high-temperature high-pressure water vapor enters the condenser 221, is cooled by the liquid in the cold-heat exchange pipeline in the condenser 221 and is condensed to become high-pressure low-temperature liquid water; when the water in the condenser 221 enters the evaporator 222 through the throttle valve 223, the water rapidly expands and is vaporized, and the heat of the cold and heat exchange medium in the cold and heat exchange pipeline in the evaporator 222 is greatly absorbed in the vaporization process, so that the purposes of cooling and refrigerating are achieved; in this process, the water vapor enters the absorber 230, is absorbed by the lithium bromide concentrated solution in the absorber 230, gradually decreases in concentration, and is returned to the generator 210, thereby completing the entire cycle. The cycle is not stopped, and the cold and heat exchange is continuously carried out.

The heat exchange unit 200 in the embodiment of the application can cool down the target area to adjust the temperature of the target area.

The liquid in the cold-heat exchange pipe in the condenser 221 may be cooling water in the warm water system in the target area, and the cold-heat exchange medium in the cold-heat exchange pipe in the evaporator 222 may be chilled water in the warm water system in the target area. Cooling of the chilled water is achieved by the heat and cold exchange unit 200, thereby achieving cooling of the target area.

It will be appreciated that SOFC110 generates a significant amount of thermal energy when powering loads in the target area. The heat-heat exchanger unit 200 uses the heat energy as a power source to cool not only the temperature of the SOFC110 when supplying power to the load in the target area but also the target area.

In the above implementation process, the heat energy of the battery is used as a power source in the heat-exchange unit 200, so as to drive the heat-exchange unit 200 to exchange heat with the target area. Since the heat energy of the cell is the heat energy generated by the SOFC110 in the SOFC power supply circuit 100 for supplying power to the load, the heat energy is not needed to be supplied to the cold-heat exchange unit 200 by burning fuel, so that the energy consumption can be reduced, and the heat energy generated by the SOFC110 for supplying power to the load is transmitted to the cold-heat exchange unit 200, so that the temperature of the area where the SOFC110 is located can be reduced, the loss of equipment in the SOFC power supply circuit 100 caused by the excessive temperature is prevented, and the safety of the equipment is improved. Further, since the heat release temperature of SOFC110 is high, the temperature generated by SOFC110 is used as a power source to drive heat exchange unit 200 to exchange heat with the target area, and the energy efficiency ratio of heat exchange unit 200 can be improved. Meanwhile, the heat exchange unit 200 is used as the heat exchange equipment of the target area, so that the dependence on other refrigeration equipment such as an air conditioner can be reduced, and the heat exchange cost of the target area is saved.

As shown in fig. 3, a cold-heat exchange system provided in an embodiment of the present application includes: SOFC power supply circuit 100, heat transfer device 300, and heat exchange unit 200 in the above embodiments.

One end of the heat transfer device 300 is connected to the SOFC module 11 in the SOFC power supply circuit 100, and the other end of the heat transfer device 300 is connected to the heat exchange unit 200.

SOFC module 11 here includes one or more SOFCs 110.SOFC110 is a solid oxide fuel cell. When the SOFC110 is operated, the generated heat energy is generally dispersed around the SOFC110, and is difficult to use. If one or more SOFCs 110 are concentrated in one closed space, heat energy generated by one or more SOFCs 110 during operation may be concentrated in the sealed space, and the heat energy in the sealed space is transferred to the heat and cold exchange unit 200 through the heat transfer device 300. The closed space is a relatively sealed space and is not absolute. That is, the closed space is not a completely sealed space, and may be provided with ventilation holes, doors, windows, etc. to allow ventilation, heat exchange, etc. with the environment outside the space. The SOFC module 11 is one or more SOFCs 110 disposed in the same sealed space.

The heat transfer device 300 is configured to transfer thermal energy in the SOFC module 11 to the heat and cold exchange group 200. The heat transfer device 300 herein may be a heat transfer pipe, a heat exchange apparatus, or the like. The heat transfer device 300 may be adapted according to the actual situation.

When the heat transfer device 300 is a heat transfer pipe, the end of the heat transfer pipe connected to the SOFC module 11 inputs the heat energy in the SOFC module 11 to the heat transfer pipe, and transfers the heat energy to the heat exchanger unit 200 through the heat transfer pipe, so as to provide the heat energy to the heat exchanger unit 200.

In some embodiments, the heat transfer conduit outer surface may be provided with insulation to reduce the consumption of thermal energy in the heat transfer conduit during transfer.

In some embodiments, the heat transfer device 300 may be a heat exchange device, through which the heat energy generated by the SOFC module 11 is transferred to the heat exchange unit 200.

In some embodiments, the heat exchange system may also be provided with a motor heat exchange unit. Such as air conditioning, refrigeration, etc.

In the implementation process, by arranging the SOFC110 to generate power, the SOFC110 only generates water and does not generate carbon dioxide in the power generation process, so that carbon emission generated by power generation can be greatly reduced, and pollution to the environment in the power generation and power utilization processes is reduced. In addition, since a large amount of heat energy is generated during the power generation of the SOFC110, by providing the heat transfer device 300 between the SOFC module 11 and the heat exchange unit 200, the heat transfer device 300 can transfer the heat energy generated by the SOFC module 11 to the heat exchange unit 200, so that the heat exchange unit 200 uses the heat energy generated by the SOFC module 11 as a power source to drive the heat exchange unit 200 to exchange heat with the target area 20. Since the heat energy of the cell is the heat energy generated by the SOFC110 in the SOFC power supply circuit 100 for supplying power to the load, the heat energy is not needed to be supplied to the cold-heat exchange unit 200 by burning fuel, so that the energy consumption can be reduced, and the heat energy generated by the SOFC110 for supplying power to the load is transmitted to the cold-heat exchange unit 200, so that the temperature of the area where the SOFC110 is located can be reduced, the loss of equipment in the SOFC power supply circuit 100 caused by the excessive temperature is prevented, and the safety of the equipment is improved. Further, since the heat release temperature of SOFC110 is high, the temperature generated by SOFC110 is used as a power source to drive heat exchange unit 200 to exchange heat with target area 20, and the energy efficiency ratio of heat exchange unit 200 can be improved.

In one possible implementation, the heat exchange system further includes: a water source heat pump unit 400.

As shown in fig. 4, one side of the water source heat pump unit 400 is connected to the target area 20, and the other side of the water source heat pump unit 400 is connected to the external device 30. The water source heat pump unit 400 is configured to exchange heat with the heat exchange medium of the target area 20, and to transfer heat energy after the heat exchange to the external device 30.

The water source heat pump unit 400 may be a conventional water source heat pump unit in the art, and it is understood that the conventional water source heat pump unit is an apparatus for preparing cold (hot) air or cold (hot) water by using water circulating in a common pipeline, water extracted from a well, a lake or a river, or water circulating in an underground coil as a cold (hot) source; comprises a using side heat exchange device, a compressor and a heat source side heat exchange device, and has the functions of single refrigeration or refrigeration and heating.

In some embodiments, the heat exchange medium of the target area 20 is a water source of the target area 20, and the water source heat pump unit 400 uses the water source of the target area 20 as a heat source, where the water source heat pump unit 400 is configured to exchange heat with the water source of the target area 20, and transfer the exchanged heat energy to the external device 30.

In some embodiments, the external device 30 may be a domestic water pipe of each user 31, a factory floor 32 water pipe, or the like. The external device 30 can be understood as a pipe connected where hot water is required.

In other embodiments, the external device 30 may be a heating device for each user 31, or a heating device for the factory floor 32. The external device 30 may be understood as a warm-air duct or the like provided in an area where heating or cooling is required.

In the above implementation process, by adopting the water source of the target area 20 as the heat source of the water source heat pump unit 400, not only the target area 20 can be cooled and the cooling load of the target area 20 can be reduced, but also the exchanged heat energy can be transmitted to the external device 30 by the water source heat pump unit 400, so that the area where the user 31, the factory 32 and the like need to be heated or the area where the hot liquid is needed can be used, and therefore, the area where the external device 30 is located does not need to be heated or heated by burning fuel, and further the energy consumption can be reduced.

In one possible implementation, the water source heat pump unit 400 uses the chilled water source of the target area 20 after absorbing heat as a heat source, that is, the cold-heat exchange medium of the target area 20 is the chilled water absorbed in the warm water supply system of the target area 20, and uses the chilled water as a heat source to supply hot air or hot water to the external device 30. The water source heat pump unit 400 further includes: and a chilled water pump.

Wherein the chilled water pump is disposed on the chilled water circulation piping between the water source heat pump unit 400 and the target area 20. The chilled water pump arrangement herein is capable of providing a driving force for chilled water to enter the water source heat pump unit 400 to provide a heat source for the water source heat pump unit 400.

It will be appreciated that if the target area 20 is an area that generates more heat energy, for example, the target area 20 is a data center, it will continuously generate a large amount of heat energy. If the temperature of the target area 20 is always increased without taking measures to lower the temperature of the target area 20, the life span, running power consumption, etc. of the equipment of the target area 20 are affected. In which case it is necessary to cool down the target area 20. By adopting the chilled water source in the target area 20 as the heat source of the water source heat pump unit 400 and transmitting the heat energy thereof to the external device 30 through the water source heat pump unit 400, the chilled water passing through the water source heat pump unit 400 can be cooled, for example, the inlet water temperature of the chilled water in the target area 20 when entering the water source heat pump unit 400 is 20 ℃, after the heat exchange of the chilled water passing through the water source heat pump unit 400, the outlet water temperature of the chilled water can be reduced to 15 ℃, and the cooled chilled water further enters the target area 20, so as to cool the target area 20, so that the temperature of the target area 20 is kept within a certain range, and the influence on the equipment life and energy consumption of the target area 20 is reduced.

In some embodiments, as shown in fig. 5, the cold-heat exchange system includes the SOFC power supply circuit 100, the heat transfer device 300 (not shown), the cold-heat exchange unit 200, and the water source heat pump unit 400, and the heat exchange relationship between the water source heat pump unit 400 and the external device 30 (not shown) is referred to in the foregoing description and fig. 4.

The SOFC power supply circuit 100 can supply power to the load of the target area 20, and simultaneously can supply heat energy to the cold-heat exchange unit 200 through the heat transfer device 300 to drive the cold-heat exchange unit 200 to cool, for example, the inlet water temperature of the chilled water in the target area 20 when the chilled water enters the cold-heat exchange unit 200 is 20 ℃, after the chilled water is cooled by the cold-heat exchange unit 200, the outlet water temperature of the chilled water can be reduced to 15 ℃, and the cooled low-temperature chilled water further enters the target area 20 to cool the target area 20. Meanwhile, the high-temperature chilled water (e.g., chilled water at 20 ℃) in the target area 20 is used as a heat source, and after heat exchange by the water source heat pump unit 400, the chilled water can be cooled, for example, the outlet water temperature of the chilled water can be reduced to 15 ℃, and the cooled low-temperature chilled water can further enter the target area 20 to cool the target area 20. The chilled water circulation pipes between the heat exchanger unit 200 and the target area 20 and the chilled water circulation pipes between the water source heat pump unit 400 and the target area 20 may be independent of each other, or may share a part of common pipes.

In the implementation process, the hydrogen fuel cell is used for supplying power to the load, so that the dependence on the power plant is reduced, the amount of coal burnt by the power plant due to power generation is further reduced, and the pollution to the environment is reduced. In addition, the heat generated when the hydrogen fuel cell supplies power to the load is input to the heat-and-heat exchanger unit 200 containing the lithium bromide solution, and the heat-and-heat exchanger unit 200 is used as a power source to improve the utilization rate of the heat generated when the hydrogen fuel cell supplies power to the load, and to reduce the energy consumption. Finally, by arranging the water source heat pump unit 400, the heat energy of the heat-generating households such as the data center and the machine room is utilized to heat the liquid so as to supply the external equipment 30 for use or heating, and the area where the external equipment 30 is located does not need to burn fuel to supply heat or heat the liquid, so that the energy consumption can be further reduced.

The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily appreciate variations or alternatives within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (10)

1. A heat exchange system, comprising: the system comprises an SOFC power supply circuit, a heat transmission device, a cold-heat exchange unit and a water source heat pump unit;

One end of the heat transmission device is connected with the SOFC module in the SOFC power supply circuit, and the other end of the heat transmission device is connected with the cold-heat exchange unit;

the SOFC module comprises one or more SOFC; the heat transfer device is configured to transfer thermal energy in the SOFC module to the cold-heat exchanger unit; the cold-heat exchange unit is configured to exchange heat with a cold-heat exchange medium in a target area;

The water source heat pump unit is configured to exchange heat with the heat exchange medium of the target area and transmit heat energy after the heat exchange to external equipment.

2. The heat exchange system of claim 1, wherein the SOFC power circuit further comprises: a transformer and an outlet cabinet;

The power outlet of the SOFC power supply circuit is connected with the power inlet of the transformer;

The power outlet of the transformer is connected with the power inlet of the outlet cabinet;

The power outlet of the outlet cabinet is connected with the load of the target area;

Wherein the SOFC power supply circuit is configured to supply power to the load through the transformer and the outlet cabinet.

3. The heat exchange system of claim 2, wherein the SOFC power circuit further comprises: a standby power supply and an incoming line cabinet;

the standby power supply is connected with the power inlet of the incoming line cabinet;

the power outlet of the wire inlet cabinet is connected with the power inlet of the transformer;

The backup power supply is configured to power the load when the SOFC power circuit is shut down.

4. The heat exchange system of claim 3 wherein the SOFC power circuit further comprises: a switching device;

The first end of the switching device is connected with the power outlet of the SOFC, and the second end of the switching device is connected with the power outlet of the incoming line cabinet;

the third end of the switching device is connected with the power inlet of the transformer;

The switching device is configured to switch the SOFC power supply circuit or the backup power supply to supply power to the load.

5. The heat exchange system according to claim 2, wherein the heat exchange unit comprises: a generator, a cold-heat exchange device and an absorber; the cold-heat exchange device comprises a condenser and an evaporator;

the generator is internally provided with a lithium bromide dilute solution, and the lithium bromide dilute solution is configured to generate water vapor under the action of heat energy of the battery;

wherein the source of the cell thermal energy comprises thermal energy generated by the SOFC power supply circuit to power the load.

6. The heat exchange system of claim 5, wherein the heat exchange device further comprises: a throttle valve;

The throttle valve is arranged between the condenser and the evaporator, and two ends of the throttle valve are respectively connected with the condenser and the evaporator.

7. The heat and cold exchange system according to claim 1, wherein the heat transfer means is a heat transfer pipe or a heat and cold exchange device.

8. The heat and cold exchange system of claim 1, wherein the heat and cold exchange medium of the target area is chilled water in a target area warm water system.

9. The heat and cold exchange system according to claim 1, wherein one side of the water source heat pump unit is connected to the target area, and the other side of the water source heat pump unit is connected to the external device.

10. The heat exchange system of claim 9, wherein the water source heat pump unit comprises: a chilled water pump;

The chilled water pump is arranged on a chilled water circulation pipeline between the water source heat pump unit and the target area.