CN114583207A - Three-stage circulation power generation system based on solid oxide fuel cell - Google Patents
Three-stage circulation power generation system based on solid oxide fuel cell Download PDFInfo
- Publication number
- CN114583207A CN114583207A CN202210289542.XA CN202210289542A CN114583207A CN 114583207 A CN114583207 A CN 114583207A CN 202210289542 A CN202210289542 A CN 202210289542A CN 114583207 A CN114583207 A CN 114583207A
- Authority
- CN
- China
- Prior art keywords
- subsystem
- fuel cell
- solid oxide
- oxide fuel
- power generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 85
- 238000010248 power generation Methods 0.000 title claims abstract description 66
- 239000007787 solid Substances 0.000 title claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 79
- 239000004065 semiconductor Substances 0.000 claims abstract description 64
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 46
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 45
- 239000002918 waste heat Substances 0.000 claims abstract description 29
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 20
- 239000007784 solid electrolyte Substances 0.000 claims description 16
- 238000002485 combustion reaction Methods 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 238000006057 reforming reaction Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical group [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 2
- 239000011734 sodium Substances 0.000 description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 11
- 229910052708 sodium Inorganic materials 0.000 description 10
- 229910001415 sodium ion Inorganic materials 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 125000004436 sodium atom Chemical group 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000003487 electrochemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
- H01M8/04022—Heating by combustion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a three-stage circulation power generation system based on a solid oxide fuel cell, which comprises a solid oxide fuel cell subsystem, a circulating system and a circulating system, wherein the solid oxide fuel cell subsystem is used for directly converting chemical energy into electric energy; the solid oxide fuel cell subsystem is connected with the alkali metal thermoelectric conversion subsystem, the alkali metal thermoelectric conversion subsystem is driven by waste heat, and heat energy is converted into electric energy through the alkali metal thermoelectric conversion subsystem to perform static power generation; the alkali metal thermoelectric conversion subsystem is connected with the semiconductor thermoelectric generation device subsystem through the heat exchanger, and the waste heat of a condenser in the alkali metal thermoelectric conversion subsystem is used as a heat source of the semiconductor thermoelectric generation device subsystem to drive the semiconductor thermoelectric generation device subsystemAnd the temperature difference power generation device subsystem generates power statically. The invention effectively improves the thermal performance, the thermal efficiency and the like of the system
Efficiency.
Description
Technical Field
The invention belongs to the technical field of medium-high temperature waste heat recovery and power engineering, and particularly relates to a three-stage circulating power generation system based on a solid oxide fuel cell.
Background
The fuel cell can generate a large amount of waste heat during operation, and particularly the high-temperature fuel cell such as a solid oxide fuel cell provides a huge opportunity for the application of the cogeneration system. At present, the solid oxide fuel cell bottoming cycle has been proposed mainly including an organic rankine cycle, a gas turbine, a steam turbine, and the like.
The electric energy is the most ideal secondary energy, can replace most energy requirements, and is the most important terminal energy in the future. The production process of electrical energy can be divided into dynamic generation and static generation. At present, the electric energy production is mainly dynamic power generation, namely, heat energy is firstly converted into mechanical energy and then converted into electric energy, and heat engines such as an organic Rankine cycle, a gas turbine, a steam turbine and the like output the mechanical energy and then are converted into electric energy by a generator. Generally speaking, in the energy flow of the whole ecological environment, as the conversion links are increased and the conversion chains are lengthened, the energy loss is increased in a geometric grade, and the operation cost and the instability of the whole system are greatly increased. In addition, since the dynamic power generation belt has moving parts, problems such as abrasion, noise, maintenance, and the like follow. Moreover, in order to obtain better economic benefit, the traditional dynamic power generation has large installed capacity, so the investment cost is high, and the traditional dynamic power generation is not suitable for being used as ground distributed energy. Under such circumstances, researchers have proposed static electricity generation using a thermoelectric direct converter which has no moving parts, is silent, and requires no maintenance. Static electricity generation, which is the direct conversion of thermal energy into electrical energy, may provide better economics and stability than dynamic electricity generation.
As a high-temperature waste heat recovery static power generation technology, the alkali metal thermoelectric conversion device has the inherent advantages of high conversion efficiency, no moving parts, no noise, high reliability, low production cost and the like, so the alkali metal thermoelectric conversion device not only has huge application prospects in the fields of space, aerospace and military, but also can be used for a cogeneration system. The alkali metal thermoelectric conversion device needs to input heat at medium and high temperatures rather than specific wavelengths, and can be easily adapted to various heat sources including radioisotopes, nuclear reactors, thermionic energy conversion, concentrated solar energy, and the like. The alkali metal thermoelectric conversion device has small power generation power, generally 5-50 kW, so the alkali metal thermoelectric conversion device is flexible to use, can be used as a distributed system to independently generate power in a dispersed manner, and can also form a larger-scale power generation device by means of module combination. In addition, because the waste heat discharge temperature of the condenser of the alkali metal thermoelectric conversion device is higher (between 400 and 700K), if the rest heat can be utilized, on one hand, the heat efficiency of the whole energy conversion process can be improved, and the high-efficiency conversion and utilization of heat energy are realized; on the other hand, the heat pollution to the environment caused by the waste heat of the condenser can be avoided or reduced, and the environment protection is facilitated.
The semiconductor temperature difference power generation device is also static power generation equipment and can directly convert medium-low temperature waste heat into electric energy. Compared with the traditional energy conversion equipment, the semiconductor temperature difference power generation device has the advantages of environmental friendliness, no moving parts, compactness, high reliability, no noise and the like, and is widely applied to the fields of solar energy, geothermal energy, fuel cells and the like.
Energy Reports (Energy Reports, 2020, vol.16, 10-16) have proposed and found that alkali metal thermoelectric conversion devices and semiconductor thermoelectric generation devices are advantageous as the bottom circulation of molten carbonate fuel cells, respectively. Therefore, it is presumed that the alkali metal thermoelectric conversion device may be more suitable for recovering the residual heat of the solid oxide fuel cell than the semiconductor thermoelectric power generation device. Further, (Energy Conversion and Management, 2017, vol.154, 118-.
The research proves that the residual heat of the solid oxide fuel cell can be used for driving the alkali metal thermoelectric conversion device, and the residual heat discharged by the alkali metal thermoelectric conversion device can be further used for driving the semiconductor thermoelectric generation device.
Disclosure of Invention
The invention aims to solve the technical problem of providing a three-stage circulation power generation system based on a solid oxide fuel cell, aiming at the defects in the prior art, an alkali metal thermoelectric conversion device driven by the waste heat of the solid oxide fuel cell drives a semiconductor thermoelectric power generation device to perform static power generation, the total power generation amount of the system is the sum of three cycles, the problem of high-efficiency utilization of the waste heat generated in the power generation process of the solid oxide fuel cell and the alkali metal thermoelectric conversion device is solved, and the comprehensive cascade utilization of various energies is realized.
The invention adopts the following technical scheme:
a three-stage circulation power generation system based on a solid oxide fuel cell comprises a solid oxide fuel cell subsystem, a circulating system and a circulating system, wherein the solid oxide fuel cell subsystem is used for directly converting chemical energy into electric energy; the solid oxide fuel cell subsystem is connected with the alkali metal thermoelectric conversion subsystem, the alkali metal thermoelectric conversion subsystem is driven by waste heat, and heat energy is converted into electric energy through the alkali metal thermoelectric conversion subsystem to perform static power generation; the alkali metal thermoelectric conversion subsystem is connected with the semiconductor thermoelectric generation device subsystem through the heat exchanger, and the waste heat of a condenser in the alkali metal thermoelectric conversion subsystem is used as a heat source of the semiconductor thermoelectric generation device subsystem to drive the semiconductor thermoelectric generation device subsystem to generate power statically.
Specifically, the solid oxide fuel cell subsystem comprises an air compressor and a gas compressor, the air compressor is connected with the cathode of the SOFC fuel cell reactor through an air preheater, the gas compressor is connected with the anode of the SOFC fuel cell reactor through a reformer and a fuel preheater, a load a is connected between the cathode and the anode in parallel, and the cathode and the anode are respectively connected with a post-combustion chamber and are connected with the alkali metal thermoelectric conversion subsystem through the post-combustion chamber.
Further, the anode is connected to the reformer RF for supplying heat for the reforming reaction and the water vapor displacement reaction.
Further, the heat exchanger sequentially passes through the air preheater, the fuel preheater, the post combustion chamber and the evaporator of the alkali metal thermoelectric conversion subsystem and then returns to the heat exchanger for preheating the air and the hydrogen-rich gas of the solid oxide fuel cell subsystem.
Specifically, the alkali metal thermoelectric conversion subsystem comprises an evaporator, the input end of the evaporator is connected with a post combustion chamber CC of the solid oxide fuel cell subsystem, the high-temperature output end of the evaporator is connected with the input end of a condenser through an AMTEC reaction device, the output end of the condenser is connected with the low-temperature input end of the evaporator through a pump, and the output end of the other side of the condenser is connected with the semiconductor temperature difference power generation device subsystem through a heat exchanger.
Further, the AMTEC reaction device comprises a beta ' alumina solid electrolyte, one side of the beta ' alumina solid electrolyte is provided with an anode, the other side of the beta ' alumina solid electrolyte is correspondingly provided with a cathode, the anode is connected with an evaporator, the cathode is connected with a condenser, and a load b is connected between the anode and the cathode.
Further, the beta double prime alumina solid electrolyte is an ion permselective membrane.
Furthermore, the evaporator and the AMTEC reaction device, and the pump and the evaporator are respectively connected through a low-pressure annular pipeline, the AMTEC reaction device and the condenser, and the condenser and the pump are respectively connected through a high-pressure annular pipeline, and the working medium filled in the low-pressure annular pipeline and the high-pressure annular pipeline is sodium metal.
Specifically, the semiconductor thermoelectric power generation device subsystem comprises N-type semiconductor thermoelectric materials and P-type semiconductor thermoelectric materials, the N-type semiconductor thermoelectric materials and the P-type semiconductor thermoelectric materials are sequentially and alternately arranged between a cold end and a hot end in parallel, the adjacent N-type semiconductor thermoelectric materials and the adjacent P-type semiconductor thermoelectric materials are sequentially connected end to end, and the cold end side of the first N-type semiconductor thermoelectric material and the cold end side of the last P-type semiconductor thermoelectric material are connected through a load c.
Furthermore, the N-type semiconductor thermoelectric material and the P-type semiconductor thermoelectric material are respectively connected with the hot end and the cold end through flow deflectors.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention relates to a three-stage circulation power generation system based on a solid oxide fuel cell.A metal thermoelectric conversion device is driven by waste heat generated by the reaction of the solid oxide fuel cell to perform static power generation, meanwhile, the waste heat of a condenser of the three-stage circulation power generation system is used as a heat source of a semiconductor temperature difference power generation device to drive the semiconductor temperature difference power generation device to further perform static power generation, and the total power generation amount of the system is the sum of three cycles; solves the problems of the waste heat cascade utilization of the solid oxide fuel cell and the waste heat utilization of the condenser in the alkali metal thermoelectric conversion device, and aims to further improve the thermal performance of the system, the power and the electric efficiency of the system and
efficiency, etc. and a number of key thermodynamic parameters.
Furthermore, the SOFC subsystem consists of an air compressor, an air preheater, a gas compressor, a fuel preheater, a reformer, a post-combustion chamber, an SOFC fuel cell reactor and a load a. After being pressurized by a gas compressor, the fuel and part of exhaust gas injected from anode exhaust gas enter a reformer through an anode injector, and the fuel in the reformer is converted into hydrogen-rich gas through a reforming reaction and then enters an anode; air is pressurized by an air compressor, enters an air preheater for preheating and then enters a cathode; in the fuel cell reactor, hydrogen and oxygen in the air generate electricity through electrochemical reaction, and power output is realized through a load a. The anode exhaust and the cathode exhaust of the SOFC respectively enter a combustion chamber to be combusted, residual heat is released, and the residual heat is used for driving an evaporator of the AMTEC subsystem together with the residual heat generated by the electrochemical reaction of the SOFC.
Furthermore, part of heat generated by the anode reaction is transferred into the reformer to provide heat for the reforming reaction and the water vapor displacement reaction, and hydrogen-rich gas generated by the reaction enters the anode of the solid oxide fuel cell.
Furthermore, in order to preheat the reaction gas of the fuel cell to the working temperature, the output end of the heat exchanger sequentially passes through the air preheater and the fuel preheater, the residual heat cooperates with the heat of combustion of the rear combustion chamber and the heat generated by the reaction to drive the evaporator of the alkali metal thermoelectric conversion subsystem, and finally the heat returns to the input end of the heat exchanger, so that the heat is recycled.
Furthermore, the AMTEC subsystem consists of an evaporator, a pump, a condenser, an AMTEC reaction device, a high-pressure annular pipeline, a low-pressure annular pipeline and a load b, wherein the working medium is metallic sodium and is filled in the annular pipeline, and the beta' aluminum oxide solid electrolyte is an ion selective permeable membrane. The high-temperature gaseous sodium evaporated and gasified by the evaporator reaches the interface between the porous film anode and the solid electrolyte through the high-pressure annular pipeline and is ionized; subsequently, Na + is driven by chemical potential gradient to pass through the solid electrolyte and migrate to the porous membrane cathode interface; when the external circuit is connected, electrons reach the cathode interface through the load b and are compounded with sodium ions into neutral sodium atoms. The sodium atoms absorb the heat of vaporization and evaporate, and the evaporated sodium atoms reach the condenser through the low-pressure sodium annular pipeline to release the heat of condensation. The condensed liquid sodium enters the evaporator for recycling due to the action of the pump.
Furthermore, in the AMTEC reaction device, beta' alumina solid electrolyte is selected as an ion selective permeable membrane, and porous membranes are adopted for an anode and a cathode, so that the reaction rate is accelerated, and the activation overvoltage is reduced.
Furthermore, the beta' alumina solid electrolyte is an excellent sodium ion conductor, has extremely low electronic conductivity and is a good ion selective permeable membrane. When sodium working medium is ionized at the interface of the anode and the electrolyte at high temperature and high pressure, sodium ions are formed, and then the sodium ions are driven to pass through the electrolyte to reach the surface of the cathode by the pressure difference between the two ends of the electrolyte.
Furthermore, due to the arrangement of the high-pressure annular pipeline and the low-pressure annular pipeline, sodium vapor difference exists between two sides of the electrolyte, a chemical potential gradient is formed, and power is provided for sodium ions to penetrate through the electrolyte.
Furthermore, the TEG subsystem is composed of a heat exchanger, a plurality of N-type semiconductor thermoelectric materials, a plurality of P-type semiconductor thermoelectric materials, a plurality of flow deflectors, a load c, a hot end and a cold end. The N-type semiconductor materials and the P-type semiconductor materials are electrically and alternately arranged and connected in series, and under the action of temperature difference of a cold end and a hot end, current carriers are formed from high temperature to low temperature to drive a load c.
Furthermore, when the coupling system works, the heat conducting fins connected with one end of the heat exchanger in the subsystem of the semiconductor thermoelectric power generation device are heated, and the heat conducting fins at the other end maintain a lower temperature close to the environment due to the action of the radiating fins, so that temperature difference is formed at two ends of the thermoelectric material.
In summary, the invention provides a three-stage cycle power generation system based on a solid oxide fuel cell, wherein the alkali metal thermoelectric conversion device driven by the waste heat of the solid oxide fuel cell drives the semiconductor thermoelectric generation device to perform static power generation, the total power generation amount of the system is the sum of three cycles, the problem of efficient utilization of the waste heat generated in the power generation process of the solid oxide fuel cell and the alkali metal thermoelectric conversion device is solved, and the power, the electric efficiency and the waste heat utilization rate of the system are improved
Efficiency, etc. as a number of key thermodynamic parameters.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic diagram of a three-stage cycle power generation system of a Solid Oxide Fuel Cell (SOFC) -alkali metal thermoelectric conversion device (AMTEC) -semiconductor thermoelectric power generation device (TEG);
fig. 2 is a comparison graph of a single SOFC system and a three-cycle coupled system at different current densities in the examples, where (a) is the power density and (b) is the electrical efficiency.
Wherein: 1. a high pressure annular conduit; 2. a low pressure annular duct; SOFC fuel cell reactor; 4. an evaporator; 5, AMTEC reaction device; 6. a condenser; 7. a pump; 8. a flow deflector; 9. a hot end; 10. and (4) cold ends.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
Various structural schematics according to the disclosed embodiments of the invention are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and some details may be omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
The invention provides a three-stage cycle power generation system based on a solid oxide fuel cell, which comprises a solid oxide fuel cell Subsystem (SOFC) for directly converting chemical energy into electric energy, an alkali metal thermoelectric conversion subsystem (AMTEC) for directly converting thermal energy into electric energy and a semiconductor thermoelectric generation device subsystem (TEG). The alkali metal thermoelectric conversion subsystem (AMTEC) is driven by waste heat generated by the reaction of the solid oxide fuel cell Subsystem (SOFC) to perform static power generation, meanwhile, the waste heat of a condenser in the alkali metal thermoelectric conversion subsystem (AMTEC) is used as a heat source of the semiconductor temperature difference power generation device subsystem (TEG), the semiconductor temperature difference power generation device subsystem (TEG) is driven to further perform static power generation, and the total power generation amount of the system is the sum of three cycles of the solid oxide fuel cell Subsystem (SOFC), the alkali metal thermoelectric conversion subsystem (AMTEC) and the semiconductor temperature difference power generation device subsystem (TEG). The invention solves the problems of gradient utilization of the waste heat of the solid oxide fuel cell and the waste heat of the condenser in the alkali metal thermoelectric conversion device, and aims to further improve the thermal performance of the system, the thermal efficiency of the system and the like 
Efficiency, etcA number of key thermodynamic parameters.
Referring to fig. 1, the three-stage cycle power generation system based on a solid oxide fuel cell of the present invention includes an SOFC subsystem, an AMTEC subsystem, and a TEG subsystem; the SOFC subsystem is used for directly converting chemical energy into electric energy, the evaporator of the AMTEC subsystem is driven by residual heat, the AMTEC subsystem is used for absorbing high-temperature gaseous sodium and releasing condensation heat, the TEG subsystem is driven by the residual heat, the residual heat of a heat exchanger HE4 in the TEG subsystem is connected with the SOFC subsystem and used for preheating air and hydrogen-rich gas of the SOFC subsystem, the circulation of the whole system is completed, and the total power generation amount of the system is the sum of the power generation amounts of the SOFC, the AMTEC and the TEG.
The SOFC subsystems include an air compressor (CP1), an air preheater (HE1), a gas compressor (CP2), a fuel preheater (HE2), a Reformer (RF), a post combustor (CC), a SOFC fuel cell reactor 3, a load a.
The air compressor CP1 is connected with the cathode of the SOFC fuel cell reactor 3 through an air preheater HE1, the fuel gas compressor CP2 is connected with the anode of the SOFC fuel cell reactor 3 after sequentially passing through a reformer RF and a fuel preheater HE2, the cathode and the anode are connected with a load a in parallel, the cathode and the anode are respectively connected with a post-combustion chamber CC and are connected with an AMTEC subsystem through the post-combustion chamber CC.
The SOFC subsystem works as follows:
after being pressurized by a fuel gas compressor CP2, the fuel and part of exhaust gas injected from the anode exhaust gas enter a reformer RF through an anode injector, and the fuel in the reformer RF is converted into hydrogen-rich gas through reforming reaction and then enters the anode;
after being pressurized by an air compressor CP1, the air enters an air preheater HE1 for preheating and then enters a cathode;
in an SOFC fuel cell reactor 3, hydrogen and oxygen in the air generate electricity through electrochemical reaction, and power output is realized through a load a;
the anode exhaust and the cathode exhaust of the SOFC subsystem enter the post combustor CC to be combusted respectively, so that residual heat is released, and the residual heat is used for driving the evaporator of the AMTEC subsystem together with the residual heat generated by the SOFC electrochemical reaction.
The AMTEC subsystem comprises an evaporator 4, a pump 7, a condenser 6, an AMTEC reaction device 5 (a cathode, an anode and beta' alumina solid electrolyte), a high-pressure annular pipeline 1, a low-pressure annular pipeline 2 and a load b,
wherein, the working medium is metallic sodium, which is filled in the high-pressure annular pipeline 1 and the low-pressure annular pipeline 2, and the beta' alumina solid electrolyte is an ion selective permeable membrane.
The input end of the evaporator 4 is connected with a post combustion chamber CC of the SOFC subsystem, the output end of the evaporator 4 is connected with the input end of the condenser 6 through the AMTEC reaction device 5, the output end of the condenser 6 is divided into two paths, one path is connected with the evaporator 4 through the pump 7, and the other path is connected with a heat exchanger HE4 of the TEG subsystem.
The AMTEC subsystem works as follows:
the high-temperature gaseous sodium evaporated and gasified by the evaporator reaches the interface between the porous membrane anode and the solid electrolyte through the high-pressure annular pipeline 1 and is ionized: na → e + Na+；
Then, Na + penetrates through the solid electrolyte under the driving of the chemical potential gradient and migrates to the cathode interface of the porous film;
when the external circuit is connected, electrons reach the cathode interface through the load b and are compounded with sodium ions into neutral sodium atoms: na (Na)++e→Na；
The sodium atoms absorb the heat of vaporization and evaporate, and the heat of condensation is released from the low-pressure sodium ring pipe 2 to the condenser. The condensed liquid sodium enters the evaporator 4 for recycling by pumping.
Because the waste heat temperature of the condenser 6 in the AMTEC subsystem is 400-700K, the TEG subsystem is driven by the waste heat in order to realize the efficient conversion of heat energy.
The TEG subsystem includes a heat exchanger (HE4), a plurality of N-type semiconductor thermoelectric materials, a plurality of P-type semiconductor thermoelectric materials and a plurality of flow deflectors 8, a load c, a hot side 9 and a cold side 10.
The N-type semiconductor thermoelectric materials and the P-type semiconductor thermoelectric materials are alternately arranged in parallel, one end of each adjacent N-type semiconductor thermoelectric material and one end of each adjacent P-type semiconductor thermoelectric material are connected with a hot end 10 through a flow deflector 8, the other end of each adjacent N-type semiconductor thermoelectric material and the other end of each adjacent P-type semiconductor thermoelectric material are connected with a cold end 9 through another flow deflector, and a load c is connected between the flow deflectors 8 on the front cold end side and the flow deflectors on the back cold end side in parallel.
The working process of the TEG subsystem is as follows:
the N-type semiconductor thermoelectric material and the P-type semiconductor thermoelectric material are alternately arranged and connected in series, and under the action of the temperature difference between the cold end 9 and the hot end 10, current carriers (holes and electrons) are formed from high temperature to low temperature to drive a load c.
The output end of the heat exchanger HE4 passes through the preheater HE1 and the fuel preheater HE2 in sequence to be used for preheating the air and hydrogen-rich gas of the SOFC subsystem, and then returns to the input end of the heat exchanger HE4 through the post combustion chamber CC and the evaporator 4, so that the cyclic utilization of heat is realized.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention 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 present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a graph comparing power density (a) and electrical efficiency (b) of a single SOFC system and a three-cycle coupled system at different current densities in an example. As can be seen, the maximum power density of a single SOFC system is 6462.5 W.m-2At this time, the electric efficiency is 36.9%; the maximum power density of the three-cycle power generation system is 9583.9W m-2The corresponding electrical efficiency is now 47.1%, the maximum power density of the three cycle power generation system is increased compared to a single SOFC system48.3 percent, and simultaneously the corresponding electrical efficiency is improved by 27.6 percent, and the analysis result shows the superiority of the three-cycle power generation system.
In summary, the three-stage cycle power generation system based on the solid oxide fuel cell of the present invention has the following features:
(1) the fuel cell system comprises a solid oxide fuel cell for directly converting chemical energy into electric energy, an alkali metal thermoelectric conversion device for directly converting heat energy into electric energy and a semiconductor thermoelectric generation device, has a chemical energy-heat energy-electric energy conversion process, realizes integration of different energy utilization systems and comprehensive cascade utilization of various energies, and improves the utilization efficiency of fuels.
(2) The semiconductor temperature difference power generation device reasonably utilizes the waste heat of the condenser in the alkali metal thermoelectric conversion subsystem, so that on one hand, the heat utilization rate of the whole system can be improved, and better thermal performance is achieved; on the other hand, the heat pollution to the environment caused by the waste heat of the condenser is avoided or reduced, and the environment protection is facilitated.
(3) The alkali metal thermoelectric conversion device and the semiconductor thermoelectric generation device are adopted to replace the traditional thermal power generation device, and the thermoelectric conversion device has the advantages of high thermoelectric conversion efficiency, high power density, no moving parts, silence, no maintenance, high reliability, high efficiency, cleanness, modularization combination and the like.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A three-stage circulation power generation system based on a solid oxide fuel cell is characterized by comprising a solid oxide fuel cell subsystem, a fuel cell subsystem and a power generation subsystem, wherein the solid oxide fuel cell subsystem is used for directly converting chemical energy into electric energy; the solid oxide fuel cell subsystem is connected with the alkali metal thermoelectric conversion subsystem, the alkali metal thermoelectric conversion subsystem is driven by waste heat, and heat energy is converted into electric energy through the alkali metal thermoelectric conversion subsystem to perform static power generation; the alkali metal thermoelectric conversion subsystem is connected with the semiconductor thermoelectric generation device subsystem through the heat exchanger, and the waste heat of a condenser in the alkali metal thermoelectric conversion subsystem is used as a heat source of the semiconductor thermoelectric generation device subsystem to drive the semiconductor thermoelectric generation device subsystem to generate power statically.
2. The three-stage solid oxide fuel cell based cycle power generation system of claim 1, wherein the solid oxide fuel cell subsystem comprises an air compressor and a gas compressor, the air compressor is connected with the cathode of the SOFC fuel cell reactor through an air preheater, the gas compressor is connected with the anode of the SOFC fuel cell reactor through a reformer and a fuel preheater, a load a is connected in parallel between the cathode and the anode, and the cathode and the anode are respectively connected with the afterburner and connected with the alkali metal thermoelectric conversion subsystem through the afterburner.
3. The three-stage solid oxide fuel cell based cycle power generating system as claimed in claim 2, wherein the anode is connected to the reformer RF for supplying heat for the reforming reaction and the water vapor displacement reaction.
4. The three-stage cycle power generating system based on solid oxide fuel cells as claimed in claim 2, wherein the heat exchanger is returned to the heat exchanger after passing through the air preheater, the fuel preheater, the post-combustion chamber and the evaporator of the alkali metal thermoelectric conversion subsystem in sequence, for preheating the air and the hydrogen rich gas of the solid oxide fuel cell subsystem.
5. The three-stage cycle power generation system based on solid oxide fuel cells as claimed in claim 1, wherein the alkali metal thermoelectric conversion subsystem comprises an evaporator, an input terminal of the evaporator is connected with the post combustion chamber CC of the solid oxide fuel cell subsystem, a high temperature output terminal of the evaporator is connected with an input terminal of a condenser through the AMTEC reaction apparatus, an output terminal of the condenser is connected with a low temperature input terminal of the evaporator through a pump, and an output terminal of the other side of the condenser is connected with the semiconductor thermoelectric generation device subsystem through a heat exchanger.
6. The three-stage cycle power generating system based on solid oxide fuel cells as claimed in claim 5, wherein the AMTEC reaction device comprises a beta "alumina solid electrolyte, one side of the beta" alumina solid electrolyte is provided with an anode, the other side is correspondingly provided with a cathode, the anode is connected with the evaporator, the cathode is connected with the condenser, and a load b is connected between the anode and the cathode.
7. The three-stage cycle power generation system based on a solid oxide fuel cell of claim 6, wherein the β "alumina solid electrolyte is an ion-permselective membrane.
8. The three-stage cycle power generation system based on the solid oxide fuel cell of claim 5, wherein the evaporator and the AMTEC reaction device, the pump and the evaporator are connected through a low pressure annular pipeline, the AMTEC reaction device and the condenser, and the condenser and the pump are connected through a high pressure annular pipeline, respectively, and the working medium filled in the low pressure annular pipeline and the high pressure annular pipeline is sodium metal.
9. The three-stage cycle power generation system based on the solid oxide fuel cell as claimed in claim 1, wherein the semiconductor thermoelectric power generation device subsystem comprises N-type semiconductor thermoelectric materials and P-type semiconductor thermoelectric materials, the N-type semiconductor thermoelectric materials and the P-type semiconductor thermoelectric materials are sequentially and alternately arranged between the cold end and the hot end in parallel, the adjacent N-type semiconductor thermoelectric materials and P-type semiconductor thermoelectric materials are sequentially connected end to end, and the cold end side of the first N-type semiconductor thermoelectric material and the cold end side of the last P-type semiconductor thermoelectric material are connected through a load c.
10. The three-stage solid oxide fuel cell based cycle power generation system of claim 9, wherein the N-type and P-type semiconductor thermoelectric materials are connected to the hot side and the cold side by flow deflectors, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289542.XA CN114583207B (en) | 2022-03-23 | 2022-03-23 | Three-stage circulation power generation system based on solid oxide fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289542.XA CN114583207B (en) | 2022-03-23 | 2022-03-23 | Three-stage circulation power generation system based on solid oxide fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114583207A true CN114583207A (en) | 2022-06-03 |
| CN114583207B CN114583207B (en) | 2024-07-23 |
Family
ID=81783794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210289542.XA Active CN114583207B (en) | 2022-03-23 | 2022-03-23 | Three-stage circulation power generation system based on solid oxide fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114583207B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116706124A (en) * | 2023-08-08 | 2023-09-05 | 武汉氢能与燃料电池产业技术研究院有限公司 | Solid oxide fuel cell power generation system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05276773A (en) * | 1992-03-19 | 1993-10-22 | Chubu Electric Power Co Inc | Alkali-metal thermoelectric conversion combined-cycle generating set |
| US20020139409A1 (en) * | 2001-03-30 | 2002-10-03 | Siemens Westinghouse Power Corporation | Hybrid combustion power system |
| JP2007200710A (en) * | 2006-01-26 | 2007-08-09 | Nippon Oil Corp | Solid oxide fuel cell stack |
| CN101645670A (en) * | 2009-09-09 | 2010-02-10 | 哈尔滨工程大学 | Integrated energy conversion and utilization system |
| CN101674031A (en) * | 2009-10-20 | 2010-03-17 | 哈尔滨工程大学 | Combined alkali metal thermoelectric direct conversion type solar system |
| JP2012016101A (en) * | 2010-06-30 | 2012-01-19 | Hitachi Ltd | Power generator including thermoelectric converter with heat pipe |
| KR20120040787A (en) * | 2010-10-20 | 2012-04-30 | 성진지오텍 주식회사 | Hybrid power generation system using waste heat of ship engines |
| CN104092409A (en) * | 2014-07-17 | 2014-10-08 | 北京航空航天大学 | Combined thermoelectric conversion device |
| CN107743571A (en) * | 2015-03-09 | 2018-02-27 | 约翰逊Ip控股有限公司 | Thermoelectrochemistry converter with integrated energy storage |
| US20180141675A1 (en) * | 2016-11-16 | 2018-05-24 | Ge Aviation Systems Limited | Auxiliary power unit with solid oxide fuel cell for an aircraft |
| CN108599350A (en) * | 2018-04-08 | 2018-09-28 | 江苏理工学院 | A kind of solid oxide fuel cell Recov ery of Energy During Automotive Brake |
| CN112038662A (en) * | 2020-08-19 | 2020-12-04 | 哈尔滨工业大学 | Solid oxide fuel cell-semiconductor temperature difference composite power generation system based on heat pipe heat dissipation |
-
2022
- 2022-03-23 CN CN202210289542.XA patent/CN114583207B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05276773A (en) * | 1992-03-19 | 1993-10-22 | Chubu Electric Power Co Inc | Alkali-metal thermoelectric conversion combined-cycle generating set |
| US20020139409A1 (en) * | 2001-03-30 | 2002-10-03 | Siemens Westinghouse Power Corporation | Hybrid combustion power system |
| JP2007200710A (en) * | 2006-01-26 | 2007-08-09 | Nippon Oil Corp | Solid oxide fuel cell stack |
| CN101645670A (en) * | 2009-09-09 | 2010-02-10 | 哈尔滨工程大学 | Integrated energy conversion and utilization system |
| CN101674031A (en) * | 2009-10-20 | 2010-03-17 | 哈尔滨工程大学 | Combined alkali metal thermoelectric direct conversion type solar system |
| JP2012016101A (en) * | 2010-06-30 | 2012-01-19 | Hitachi Ltd | Power generator including thermoelectric converter with heat pipe |
| KR20120040787A (en) * | 2010-10-20 | 2012-04-30 | 성진지오텍 주식회사 | Hybrid power generation system using waste heat of ship engines |
| CN104092409A (en) * | 2014-07-17 | 2014-10-08 | 北京航空航天大学 | Combined thermoelectric conversion device |
| CN107743571A (en) * | 2015-03-09 | 2018-02-27 | 约翰逊Ip控股有限公司 | Thermoelectrochemistry converter with integrated energy storage |
| US20180141675A1 (en) * | 2016-11-16 | 2018-05-24 | Ge Aviation Systems Limited | Auxiliary power unit with solid oxide fuel cell for an aircraft |
| CN108599350A (en) * | 2018-04-08 | 2018-09-28 | 江苏理工学院 | A kind of solid oxide fuel cell Recov ery of Energy During Automotive Brake |
| CN112038662A (en) * | 2020-08-19 | 2020-12-04 | 哈尔滨工业大学 | Solid oxide fuel cell-semiconductor temperature difference composite power generation system based on heat pipe heat dissipation |
Non-Patent Citations (4)
| Title |
|---|
| EMIN AÇIKKALP等: ""Comparative performance analyses of molten carbonate fuel cell-alkali metal thermal to electric converter and molten carbonate fuel cell-thermo-electric generator hybrid systems"", 《ENERGY REPORTS》, vol. 6, pages 10 - 16 * |
| HOUCHENG ZHANG等: ""Two-stage thermoelectric generators for waste heat recovery from solid oxide fuel cells"", 《ENERGY》, vol. 132, pages 280 - 288 * |
| 丁泽民等: "三类微型能量转换系统有限时间热力学性能优化的研究进展", 中国科学:技术科学, vol. 45, no. 09, 20 September 2015 (2015-09-20), pages 889 - 918 * |
| 肖兰等: "基于AMTEC的碟式太阳能热发电系统的可行性研究", 华北电力大学学报(自然科学版), vol. 37, no. 01, 30 January 2010 (2010-01-30), pages 53 - 56 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116706124A (en) * | 2023-08-08 | 2023-09-05 | 武汉氢能与燃料电池产业技术研究院有限公司 | Solid oxide fuel cell power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114583207B (en) | 2024-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7170630B2 (en) | System for high temperature reversible electrolysis of water comprising a hydride tank combined with an electrolyser | |
| CN113540541B (en) | SOFC (solid oxide Fuel cell) using ammonia water as fuel, and cascade power generation system and operation method thereof | |
| Lykas et al. | A comprehensive review of solar-driven multigeneration systems with hydrogen production | |
| CN111933977A (en) | Fuel cell-turbocharged internal combustion engine hybrid power generation system | |
| CN113889648B (en) | MW-level combined heat and power supply fuel cell power station | |
| CN111089001A (en) | Solar-energy-based thermoelectric hydrogen multi-combined supply system | |
| CN114583207B (en) | Three-stage circulation power generation system based on solid oxide fuel cell | |
| CN116544466A (en) | Combined power generation system of thermal ammonia turbine and proton exchange membrane fuel cell | |
| Sun et al. | Efficient waste heat recovery from molten carbonate fuel cells through graphene-collector thermionic generators | |
| CN215209640U (en) | Proton exchange membrane electrolytic hydrogen production device based on photovoltaic cell | |
| CN113948738B (en) | Method and system for producing hydrogen by integrating compressed air thermochemical process and fuel cell energy storage | |
| CN115498225A (en) | Combined power generation system and method of hot ammonia turbine and fuel cell | |
| CN113654254A (en) | Green intelligent energy supply system | |
| US20230207928A1 (en) | Halogen-based thermo-electrochemical converter | |
| CN111908423A (en) | Thermoelectric power generation coupling methanol-water reforming hydrogen production power generation system | |
| CN111943296A (en) | Fresh water-electricity combined supply system with coupling of fuel cell complementary energy and absorption type water generator | |
| CN114738062B (en) | Aluminum fuel energy storage system coupling SOFC and gas turbine and working method | |
| CN220673403U (en) | Multi-energy co-supply system of data center | |
| CN219610494U (en) | SOFC power generation system suitable for underwater environment | |
| WO2024119391A1 (en) | Renewable energy utilization system based on nitrogen-free combustion and carbon dioxide circulation | |
| CN118800935A (en) | Photovoltaic photo-thermal cooperative driving fuel cell composite power system capable of improving efficiency and fixing carbon | |
| Yao et al. | Thermodynamic performances of a power-to-X system based on solar concentrating photovoltaic/thermal hydrogen production | |
| Cheng et al. | Design and energy efficiency analysis of hydrogen-fueled SOFC-‘GT+ ST’combined cycle system | |
| CN115560250A (en) | Electrolytic cell hydrogen production system for natural gas station | |
| CN116517652A (en) | System for combined power generation of synthesis gas turbine and SOFC based on ammonia decomposition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |