CN115469233A - High-temperature reversible SOC electrochemical conversion battery test system - Google Patents
High-temperature reversible SOC electrochemical conversion battery test system Download PDFInfo
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- CN115469233A CN115469233A CN202211077712.4A CN202211077712A CN115469233A CN 115469233 A CN115469233 A CN 115469233A CN 202211077712 A CN202211077712 A CN 202211077712A CN 115469233 A CN115469233 A CN 115469233A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention relates to a high-temperature reversible SOC electrochemical conversion battery test system, which comprises a gas supply subsystem, a first gas preheating subsystem, a second gas preheating subsystem, a galvanic pile, a heat-insulating layer and a power supply subsystem, wherein the first gas preheating subsystem is connected with the second gas preheating subsystem through a pipeline; the gas supply subsystem is connected with the first gas preheating subsystem and the second gas preheating subsystem to the electric pile and provides reaction gas for the electric pile; the first gas preheating subsystem and the second gas preheating subsystem are connected with the galvanic pile and used for heating gas from the gas supply subsystem to a temperature suitable for the running of the galvanic pile. The test system provided by the invention can provide the same operating conditions and galvanic pile thermal management as the system during operation, realizes flexible switching between a test board mode and a system test mode, and has universal applicability; and at the same time have detailed monitoring and diagnostics not provided by existing test systems.
Description
Technical Field
The invention relates to the research field of test systems, in particular to a high-temperature reversible SOC electrochemical conversion battery test system.
Background
Solid oxide cell technology is an excellent solution to reduce the dependence on fossil fuels and to reduce global carbon emissions. The technique is fully reversible, meaning that it can be operated in a fuel cell mode, converting fuel to electricity, and in an electrolysis mode, converting electricity to electricityIs a reversible process of fuel. This reversible reaction takes place in one device and is more efficient than all similar techniques. Furthermore, it is very flexible in terms of fuel and process. Not only can a single plant perform steam electrolysis and hydrogen-fueled power generation, but the same plant can also perform CO 2 Electrolysis and co-electrolysis for electricity to fuel applications and conversion of a variety of fuels, such as coal gas, biogas, various hydrocarbons or ammonia gas, to power. Such devices and techniques with versatility may expand energy structures for the future.
The current bottlenecks that limit this technology are cost and durability. Although SOC technology uses common, abundant, and large quantities of raw materials, the cost of a single stack is high due to the very low throughput. The short life time of the stack is also a major cause of low throughput. In the large-scale subsidy demonstration projects performed in japan (the ene-Farm project) and europe (the ene-field project), the service life of the stack is low (less than 10000 hours), and there is still little improvement in this respect. In contrast, the durability test (test over 100000 hours) and stability test (thousands of power cycles and hundreds of thermal cycles) of the stack by the laboratory test bench were successfully verified. The present invention provides a solution to make up for the gap between laboratory testing and actual operation of the system.
The test results of the laboratory test and the product field test of the current SOC technology are very many. Many laboratory experiments and mass production experiments are performed simultaneously to improve the service life of the product, thereby achieving a cost that can be mass-produced on a large scale. Patents CN203339356U and CN105449250a describe a cell stack testing apparatus for a laboratory. These devices are highly flexible and reliable, and can be used for testing and diagnosing the stack and evaluating the operating characteristics over a wide range of operating conditions. These test systems also have a high degree of accuracy and repeatability, which enables researchers to determine the ideal conditions of stack operation, including fuel composition, temperature, flow rate, and power. These are all positive results obtained in the laboratory. The experimental results of these stack testing devices cannot be reproduced under laboratory or pilot-produced fuel cell system operating conditions.
The disadvantage of the current test device is that the galvanic pile needs to be tested in a heating furnace, and the patent CN105449250a describes in detail the methods of gas supply, gas heating power generation and power consumption. The gas is heated together with the stack by the coiled pipe, which results in the stack and gas heating process being performed by the same device. The stack and gas are heated in a furnace so that problems with the stack and gas are coupled. However, in a system that is actually operating, the two temperatures are completely separated. Therefore, the existing testing station provides measurement data that is different from the actual system operation data.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and provide a high-temperature reversible SOC electrochemical conversion battery test system.
The purpose of the invention is realized by the following technical scheme:
a high-temperature reversible SOC electrochemical conversion battery test system comprises a gas supply subsystem, a first gas preheating subsystem, a second gas preheating subsystem, a galvanic pile, a heat insulation layer and a power supply subsystem; the gas supply subsystem is connected with the first gas preheating subsystem and the second gas preheating subsystem to the galvanic pile and provides reaction gas for the galvanic pile; the first gas preheating subsystem and the second gas preheating subsystem are connected with the galvanic pile and used for heating the gas from the gas supply subsystem to a temperature suitable for the running of the galvanic pile; the galvanic pile is arranged in the heat insulation layer and is used for realizing mutual conversion of chemical energy and electric energy through electrochemical reaction; the power supply subsystem is connected with the galvanic pile and is used for controlling the electric power generated by the galvanic pile or providing the electric power for the galvanic pile; the temperature control of the electric pile is realized only by the first gas preheating subsystem and the second gas preheating subsystem.
Further, a stack heater is included; the galvanic pile heater is arranged around the galvanic pile, and the galvanic pile heater and the galvanic pile are surrounded by the heat insulation layer; wherein the temperature control of the electric pile is realized only by the first gas preheating subsystem, the second gas preheating subsystem or only by the electric pile heater.
Further comprises a control subsystem, an exhaust gas treatment subsystem, an advanced diagnosis subsystem and a data acquisition and real-time diagnosis subsystem.
Furthermore, the control subsystem is respectively connected with the gas supply subsystem, the first gas preheating subsystem, the second gas preheating subsystem, the electric pile heater, the power supply subsystem, the tail gas treatment subsystem, the advanced diagnosis subsystem and the data acquisition and real-time diagnosis subsystem; the control subsystem is a device with programming function and is used for providing process control and safety monitoring.
Further, the tail gas treatment subsystem is connected with the galvanic pile; the tail gas treatment subsystem comprises a combustor, a cooling system and a gas collecting device; the combustor is used for removing combustible gas in tail gas, the cooling system is used for cooling the tail gas, and the gas collecting device is used for collecting the tail gas from the galvanic pile for online or offline analysis.
Further, one end of the advanced diagnosis subsystem is connected to the control subsystem, and the other end of the advanced diagnosis subsystem is connected to the electric pile; the advanced diagnostics subsystem enables advanced diagnostics by adjusting power delivered to or removed from the stack.
Further, the data acquisition and real-time diagnosis subsystem comprises a data acquisition unit and a real-time diagnosis unit; the data acquisition unit is used for acquiring and storing test data; and the real-time diagnosis unit is used for carrying out real-time analysis and diagnosis on the acquired test data.
Further, the stack is a solid oxide cell or a molten carbonate fuel cell or a proton conducting ceramic fuel cell in a fuel cell mode or in an electrolysis mode or in a co-electrolysis mode; the solid oxide cell is electrolyte-supported or anode-supported or metal-supported; the solid oxide cell is tubular or flat plate-shaped or flat tubular.
Further, the gas supply subsystem comprises a gas source module, a gas supply valve and a gas supply pipeline; the air supply module is connected with the air supply valve, and the air supply valve is connected to an air supply pipeline; the air source module is an air cylinder or an air feeding element.
Further, the first gas preheating subsystem and the second gas preheating subsystem comprise preheating elements and temperature controllers, and the preheating elements comprise a raw material side preheating element and an air side preheating element.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the high-temperature reversible SOC electrochemical conversion battery test system provided by the invention, the temperature control of the galvanic pile can be realized only by the galvanic pile heater, namely, the test conditions identical to those of all other test tables can be provided; therefore, the test system provided by the invention can perform benchmark test on the high-temperature reversible SOC electrochemical conversion battery and compare the result with the result obtained by other test systems.
2. According to the high-temperature reversible SOC electrochemical conversion battery test system provided by the invention, the temperature control of the galvanic pile can be realized only by the first gas preheating subsystem and the second gas preheating subsystem, namely, the galvanic pile can still be kept in a heat preservation state to run when the galvanic pile heater is closed, and the heat of the galvanic pile only comes from gas preheated by the preheating subsystem; this mode of operation is exactly the same as the actual operation of the system as a product.
3. The high-temperature reversible SOC electrochemical conversion battery test system provided by the invention can realize the temperature control of the galvanic pile only through the galvanic pile heater so as to provide the same test conditions (test bench mode) as all other test benches, and can also realize the temperature control of the galvanic pile only through the first gas preheating subsystem and the second gas preheating subsystem so as to provide the same running conditions and galvanic pile thermal management (system test mode) as the system runs, thereby realizing the flexible switching between the test bench mode and the system test mode and having universal applicability; in addition, compared with the existing test system, the test system provided by the invention can compare the test results of the galvanic pile under the test table condition and the system condition, such as the power output, the dynamic response, the service life and the like of the galvanic pile, so that the difference between two operation modes of the galvanic pile can be analyzed, and data support can be provided to reduce the gap between the performance realized by a laboratory and the performance realized by a field test.
Drawings
FIG. 1 is a block diagram of the high temperature reversible test system of the present invention;
FIG. 2 is a P & ID diagram of the high temperature reversible test system of the present invention;
FIG. 3 is a structural diagram of a galvanic pile and an insulating layer in the high temperature reversible test system according to the present invention;
in the figure, 1 is a gas supply subsystem, 2 is a first gas preheating subsystem, 3 is a second gas preheating subsystem, 4 is a galvanic pile, 5 is a galvanic pile heater, 6 is a heat-insulating layer, 7 is a tail gas treatment subsystem, 8 is a power supply subsystem, 9 is a high-level diagnosis subsystem, 10 is a control subsystem, and 11 is a data acquisition and real-time diagnosis subsystem.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
The embodiment is as follows:
a high-temperature reversible SOC electrochemical conversion battery test system is shown in figures 1 and 2 and comprises a gas supply subsystem 1, a first gas preheating subsystem 2, a second gas preheating subsystem 3, a galvanic pile 4, a heat insulation layer 6, a tail gas treatment subsystem 7, a power supply subsystem 8, an advanced diagnosis subsystem 9, a control subsystem 10 and a data acquisition and real-time diagnosis subsystem 11; the control subsystem 10 is respectively connected with the gas supply subsystem 1, the first gas preheating subsystem 2, the second gas preheating subsystem 3, the electric pile heater 5, the tail gas treatment subsystem 7, the power supply subsystem 8, the advanced diagnosis subsystem 9 and the data acquisition and real-time diagnosis subsystem 10; the gas supply subsystem 1 is connected with the first gas preheating subsystem 2 and the second gas preheating subsystem 3 to the electric pile 4 and provides reaction gas for the electric pile 4; the first gas preheating subsystem 2 and the second gas preheating subsystem 3 are connected with the galvanic pile 4 and are used for heating the gas from the gas supply subsystem 1 to a temperature suitable for the running of the galvanic pile; the power supply subsystem 8 is connected with the galvanic pile 4 and is used for controlling the power generated by the galvanic pile 4 or providing power for the galvanic pile; one end of the advanced diagnosis subsystem 9 is connected to the control subsystem 10, and the other end of the advanced diagnosis subsystem is connected to the electric pile 4; the galvanic pile 4 is arranged in the heat preservation layer 6 and is used for realizing mutual conversion of chemical energy and electric energy through electrochemical reaction; and the tail gas treatment subsystem 9 is connected with the galvanic pile 4 and is used for treating the tail gas after reaction. The temperature control of the electric pile 4 is realized by the first gas preheating subsystem 2 and the second gas preheating subsystem 3.
The high-temperature reversible SOC electrochemical conversion battery test system further comprises a stack heater 5; the electric pile heater 5 is arranged around the electric pile 4, and the electric pile heater 5 and the electric pile 4 are surrounded by the heat insulation layer 6; wherein, the temperature control of the electric pile 4 is realized by the first gas preheating subsystem 2, the second gas preheating subsystem 3 or the electric pile heater 5.
The gas supply subsystem 1 comprises a gas source module, a gas supply valve and a gas supply pipeline; the air supply module is connected with the air supply valve, and the air supply valve is connected to an air supply pipeline; the air source module is an air cylinder or an air supply element; the method specifically comprises the following steps: the gas supply subsystem 1 includes gas flow control and can mix and feed various types of gases into the stack 4. In the fuel cell mode, H 2 、CH 4 、CO、NH 3 And other hydrocarbons are common fuels on the feed side. In the electrolysis mode, the reactants are typically water vapor and/or CO 2 . In addition, the gas supply subsystem 1 also includes special gases used during start-up and shut-down or in the presence of contaminants. The gas used on the other side, except the feed side, is typically air. In the electrolysis mode, this side can also be operated without air, since the oxygen generated by the reaction on this side can leave the test system after passing through the exhaust gas treatment subsystem 7.
The first gas preheating subsystem 2 and the second gas preheating subsystem 3 comprise preheating elements and temperature controllers, and the preheating elements comprise a raw material side preheating element and an air side preheating element. The method comprises the following specific steps: the first gas preheating subsystem 2 and the second gas preheating subsystem 3 heat the gas from the gas supply subsystem 1 to a temperature suitable for the operation of the electric pile 4. The raw material and the air have respective preheating systems, and the temperature can be set independently. The preheating system is provided with a temperature controller, and the heating power can be adjusted according to the flow and the temperature set value.
The electric pile 4 is a solid oxide cell or a molten carbonate fuel cell or a proton conduction ceramic fuel cell; the method specifically comprises the following steps: the stack 4 may be a Solid Oxide Cell (SOC), a Molten Carbonate Fuel Cell (MCFC), or a Proton Conducting Ceramic Fuel Cell (PCCFC). For SOC, the stack may be an electrolyte-supported, anode-supported, or metal-supported stack. The stack can generate electricity in a fuel cell mode, store energy and produce fuel in an electrolysis mode, and switch between the two modes.
Further, the solid oxide cell is electrolyte-supported or anode-supported or metal-supported.
Further, the solid oxide cell is tubular or flat plate-shaped or flat tubular.
Further, the stack 4 can generate power in both the fuel cell mode and the electrolysis mode, store energy and produce fuel, and switch between the two modes.
The stack heater 5 includes at least one heating element disposed at the periphery of the thermal insulation layer 6 for reducing heat loss during stack operation to maintain the operating temperature of the stack. The method specifically comprises the following steps: the stack 4 is surrounded by a stack heater 5 and an insulating layer 6, as shown in fig. 3. During test stand mode operation, the stack heater 5 has the same function as the heater in the existing test stand. This heater should be turned off when operating in the system test mode. Therefore, the electric pile does not receive heat from the outside, the heat balance is only maintained by the gas provided by the gas supply subsystem 1, and the temperature of the gas provided by the gas supply subsystem 1 is realized by the first gas preheating subsystem 2 and the second gas preheating subsystem 3. The outside of the galvanic pile 4 is insulated by an insulating layer 6. The insulation material selection and design of the insulation layer 6 is similar to the insulation material and design used in actual systems.
The tail gas treatment subsystem 7 comprises a combustor, a cooling system and a gas collecting device; the combustor is used for removing combustible gas in tail gas, the cooling system is used for cooling the tail gas, and the gas collecting device is used for collecting the tail gas from the galvanic pile 4 for online or offline analysis. The method specifically comprises the following steps: the gas from the stack 4 is treated by an off-gas treatment subsystem 7 and discharged to the environment. The tail gas treatment subsystem 7 collects tail gas from the stack and may include a burner to remove combustible gases from the tail gas or a cooling system to cool the tail gas. It is also possible here to include a gas collection device to collect off-gas from the stack (mixed or separated) for on-line or off-line analysis.
The power supply subsystem 8 is used to control the power generated by the stack 4 when operating in the fuel cell mode or to provide power to the stack 4 when operating in the electrolysis mode.
The advanced diagnostics subsystem 9 enables advanced diagnostics by regulating the power delivered to or removed from the stack 4. The method specifically comprises the following steps: the test system comprises an integrated/removable advanced diagnostic system 9. The system provides a tool for advanced diagnostics by regulating the power delivered to or removed from the stack. These waveforms may be single or repeating in steps, sinusoids, triangles or any other form. In the case of the repetitive form, it may be ultra high frequency (several hundred MHz) to micro hertz. It may include a Frequency Response Analyzer (FRA), a Fast Fourier Transform (FFT) analyzer, harmonics or any other analyzer. Such advanced diagnostics are optional and may be built into the power subsystem 8.
The control subsystem 10 is a device with programming functions that provides process control and safety monitoring for the test system. The method specifically comprises the following steps: the control subsystem 10 provides process control and safety monitoring. This may be a PC computer, PLC, FPGA, microcontroller or any other type of programmable function device. It provides overall control and coordination among all other subsystems.
The data acquisition and real-time diagnosis subsystem 11 comprises a data acquisition unit and a real-time diagnosis unit; the data acquisition unit is used for acquiring and storing test data; the real-time diagnosis unit is used for carrying out real-time analysis and diagnosis on the acquired test data; the method specifically comprises the following steps: the data acquisition unit may include real-time diagnostics. All relevant test data is collected by the data acquisition unit and stored for subsequent processing. It may include real-time diagnostics such as single cell or battery pack monitoring, ohmic resistance measurement, and single or multiple frequency response analysis. The data acquisition unit may be integrated with the control subsystem 10.
Further, the disclosed test system design is fully flexible and can be switched between test bench mode and system test mode as needed during testing. The system has advanced diagnostic functions, and is capable of performing on-line measurements and analyses, such as Electrochemical Impedance Spectroscopy (EIS), relaxation time Distribution (DRT), and Total Harmonic Distortion (THD). Since such a test system can perform both tests under the conditions of the test bench or test bench described in the prior art and tests under the conditions of system operation, such a test bench can provide data for analyzing the differences of the stack under different test conditions and contribute to the durability and robustness of the battery pack. The type and number of advanced diagnostics in a system is scalable, and the system design allows testing to be performed in a controlled and repeatable environment. In addition, other off-line tests, such as gas sampling, composition and contamination analysis, may also be performed, all applicable to both test bench and system operating conditions.
Compared with the existing test system, the test system disclosed by the invention provides a complete test environment, and the test result under the test table condition and the system condition is compared, such as the power output, the dynamic response, the service life and the like of the galvanic pile. Thus, the present test system can analyze the difference between the two modes of operation of the stack and can provide data support to narrow the gap between laboratory-implemented performance and field-test-implemented performance.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A high-temperature reversible SOC electrochemical conversion battery test system is characterized by comprising a gas supply subsystem, a first gas preheating subsystem, a second gas preheating subsystem, a galvanic pile, a heat insulation layer and a power supply subsystem; the gas supply subsystem is connected with the first gas preheating subsystem and the second gas preheating subsystem to the electric pile and provides reaction gas for the electric pile; the first gas preheating subsystem and the second gas preheating subsystem are connected with the galvanic pile and used for heating the gas from the gas supply subsystem to a temperature suitable for the running of the galvanic pile; the galvanic pile is arranged in the heat insulation layer and is used for realizing the mutual conversion of chemical energy and electric energy through electrochemical reaction; the power supply subsystem is connected with the galvanic pile and is used for controlling the electric power generated by the galvanic pile or providing the electric power for the galvanic pile; the temperature control of the electric pile is realized only by the first gas preheating subsystem and the second gas preheating subsystem.
2. The test system of claim 1, comprising a stack heater; the electric pile heater is arranged around the electric pile, and the electric pile heater and the electric pile are surrounded by the heat insulation layer; wherein the temperature control of the electric pile is realized only by the first gas preheating subsystem, the second gas preheating subsystem or only by the electric pile heater.
3. The test system of claim 2, comprising a control subsystem, an exhaust gas treatment subsystem, an advanced diagnostics subsystem, a data acquisition and real-time diagnostics subsystem.
4. The test system of claim 3, wherein the control subsystem is connected to the gas supply subsystem, the first gas preheating subsystem, the second gas preheating subsystem, the stack heater, the power supply subsystem, the tail gas treatment subsystem, the advanced diagnosis subsystem, and the data acquisition and real-time diagnosis subsystem, respectively; the control subsystem is a device with programming function and is used for providing process control and safety monitoring.
5. The test system of claim 3, wherein the tail gas treatment subsystem is coupled to a stack; the tail gas treatment subsystem comprises a combustor, a cooling system and a gas collecting device; the combustor is used for removing combustible gas in tail gas, the cooling system is used for cooling the tail gas, and the gas collecting device is used for collecting the tail gas from the galvanic pile for online or offline analysis.
6. The test system of claim 3, wherein the advanced diagnostics subsystem is connected to the control subsystem at one end and to the stack at the other end; the advanced diagnostics subsystem enables advanced diagnostics by adjusting power delivered to or removed from the stack.
7. The test system of claim 3, wherein the data acquisition and real-time diagnostic subsystem comprises a data acquisition unit and a real-time diagnostic unit; the data acquisition unit is used for acquiring and storing test data; and the real-time diagnosis unit is used for carrying out real-time analysis and diagnosis on the acquired test data.
8. A test system according to claim 1 or 2 or 3, wherein the stack is a solid oxide cell or a molten carbonate fuel cell or a proton conducting ceramic fuel cell in fuel cell mode or in electrolysis mode or in co-electrolysis mode; the solid oxide cell is electrolyte-supported or anode-supported or metal-supported; the solid oxide cell is tubular or flat plate-shaped or flat tubular.
9. The test system of claim 1, 2 or 3, wherein the gas supply subsystem comprises a gas supply module, a gas supply valve, a gas supply conduit; the air supply module is connected with the air supply valve, and the air supply valve is connected to an air supply pipeline; the air source module is an air cylinder or an air feeding element.
10. The test system of claim 1, 2 or 3, wherein the first and second gas preheating subsystems comprise preheating elements including a feedstock side preheating element and an air side preheating element, and a temperature controller.
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| CN116317175A (en) * | 2023-02-21 | 2023-06-23 | 华北电力大学 | Solar-driven RSOC distributed poly-generation system and co-generation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116317175A (en) * | 2023-02-21 | 2023-06-23 | 华北电力大学 | Solar-driven RSOC distributed poly-generation system and co-generation method thereof |
| CN116317175B (en) * | 2023-02-21 | 2024-01-23 | 华北电力大学 | Solar-driven RSOC distributed poly-generation system and co-generation method thereof |
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