CN115602895A - Gas-electricity conversion and energy storage integrated system based on solid oxide fuel cell - Google Patents
Gas-electricity conversion and energy storage integrated system based on solid oxide fuel cell Download PDFInfo
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
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- H—ELECTRICITY
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- 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
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- H—ELECTRICITY
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04708—Temperature of fuel cell reactants
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- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
- H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/14—Fuel cells with fused electrolytes
- H01M8/144—Fuel cells with fused electrolytes characterised by the electrolyte material
- H01M8/145—Fuel cells with fused electrolytes characterised by the electrolyte material comprising carbonates
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
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- 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
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Abstract
The invention discloses a gas-electricity conversion and energy storage integrated system based on a solid oxide fuel cell, which comprises a reformer, a solid oxide fuel cell stack, a carbonate fuel cell stack, a gas valve assembly, a catalytic combustion chamber and an oxygen source, wherein the reformer is arranged in the solid oxide fuel cell stack; the input end of the reformer is connected to a natural gas pipe through a first preheating device and is also connected to a water pipe through a second preheating device; the output end of the first air inlet is connected to the first air inlet of the air valve component; and the air supply outlet of the oxygen source is connected to the input port of the cathode unit of the carbonate fuel cell through a second heat exchange device and is also connected to the input port of the cathode unit of the solid oxide fuel cell through a third preheating device. The invention fully and effectively recycles the exhaust gas of the solid oxide fuel cell stack and the carbonate fuel cell stack, effectively reduces and reduces the pollution of the tail gas emission of the power generation system to the environment, and achieves the effects of energy conservation and emission reduction.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a gas-electricity conversion and energy storage integrated system based on a solid oxide fuel cell.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. Solid Oxide Fuel Cells (SOFC) belong to the third generation of Fuel cells, and are all-Solid-state chemical power generation devices that directly convert chemical energy stored in Fuel and oxidant into electrical energy at medium and high temperatures with high efficiency and environmental friendliness. Is widely considered to be a fuel cell which will be widely popularized and applied in the future as proton exchange membrane fuel cells.
The solid oxide fuel cell power generation system is a clean and efficient energy conversion system, and can convert chemical energy in fuel into electric energy by taking gaseous hydrocarbons such as natural gas or hydrogen, carbon monoxide and the like as raw materials. By means of a natural gas pipe network which is widely distributed, the SOFC power generation system can be integrated into a distributed power station which takes natural gas as a raw material in a large scale, so that the power demand of buildings, plants, communities and the like is met, and the commercial prospect is good.
In the prior art, a solid oxide fuel cell power generation system is difficult to accurately control the shunt of the solid oxide fuel cell power generation system, the stable operation of the system is influenced, and gas exhausted through reaction is wasted, so that the effects of energy conservation and emission reduction cannot be achieved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a gas-electricity conversion and energy storage integrated system based on a solid oxide fuel cell, which can fully and effectively recycle the exhaust gas of a solid oxide fuel cell stack and a carbonate fuel cell stack, so as to effectively reduce and reduce the pollution of the tail gas emission of a power generation system to the environment and achieve the effects of energy conservation and emission reduction.
Therefore, the technical scheme adopted by the invention is as follows: the integrated gas-electricity conversion and energy storage system based on the solid oxide fuel cell comprises a reformer, a solid oxide fuel cell stack, a carbonate fuel cell stack, a gas valve assembly, a catalytic combustion chamber and an oxygen source;
the solid oxide fuel cell stack is a main power supply stack and comprises a plurality of solid oxide fuel cells, anodes of the solid oxide fuel cells form an anode unit of the solid oxide fuel cell, cathodes of the solid oxide fuel cells form a cathode unit of the solid oxide fuel cell, and an electrolyte unit of the solid oxide fuel cell is arranged between the anode unit of the solid oxide fuel cell and the cathode unit of the solid oxide fuel cell;
the carbonate fuel battery pack is an auxiliary power supply battery pack and comprises a plurality of carbonate fuel batteries, anodes of the carbonate fuel batteries form an anode unit of the carbonate fuel battery, cathodes of the carbonate fuel batteries form a cathode unit of the carbonate fuel battery, and a carbonate fuel battery electrolyte unit is arranged between the anode unit of the carbonate fuel battery and the cathode unit of the carbonate fuel battery;
the input end of the reformer is connected to a natural gas pipe through a first preheating device and used for receiving natural gas, and is also connected to a water pipe through a second preheating device and used for receiving water; the output end of the first air inlet is connected to the air valve component;
the gas valve assembly comprises a first gas inlet, a first gas outlet and a second gas outlet;
the first exhaust port of the gas valve assembly is connected to the input port of the anode unit of the carbonate fuel cell through a first heat exchange device;
the air supply outlet of the oxygen source is connected to the input port of the cathode unit of the carbonate fuel cell through a second heat exchange device, and is also connected to the input port of the cathode unit of the solid oxide fuel cell through a third preheating device;
the output port of the carbonate fuel cell anode unit and the output port of the carbonate fuel cell cathode unit are connected to the input port of the carbonate fuel cell cathode unit together through the catalytic combustion chamber and the second heat exchange device;
the second exhaust port of the gas valve assembly is connected to the input port of the anode unit of the solid oxide fuel cell through a fourth preheating device.
Further, the gas valve assembly further comprises a second gas inlet, and the output of the solid oxide fuel cell anode unit is connected to the second gas inlet of the gas valve assembly.
Further, the input of the cathode unit of the carbonate fuel cell is also connected to the initial CO via the second heat exchange means 2 A supply container; the initial CO 2 Supply vessel for supplying CO 2 。
Further, the reformer reforms the natural gas at a preset temperature of 690-710 ℃;
the preset reaction temperature of the solid oxide fuel cell stack is 790-810 ℃;
the preset reaction temperature of the carbonate fuel cell stack is 650-700 ℃.
Further, the chemical reaction formula in the reformer is:
CH 4 +H 2 O→3H 2 +CO；CO+H 2 O→H 2 +CO 2 。
further, the chemical reaction formula of the solid oxide fuel cell anode unit is as follows:
H 2 +O 2- →H 2 O+2e；
the chemical reaction formula of the cathode unit of the solid oxide fuel cell is as follows:
O 2 +4e→2O 2- ；
the total reaction formula of the solid oxide fuel cell stack is as follows:
2H 2 +O 2 →2H 2 O。
further, the chemical reaction formula of the anode unit of the carbonate fuel cell is as follows:
H 2 +CO 3 2- →2H 2 O+CO 2 +2e；
the chemical reaction formula of the cathode unit of the carbonate fuel cell is as follows:
O 2 +2CO 2 →4e+2CO 3 2-
the overall reaction formula of the carbonate fuel cell stack is as follows:
2H 2 +O 2 +2CO 2 →2H 2 O+2CO 2 。
further, the outlet of the cathode unit of the solid oxide fuel cell is connected to an exhaust gas discharge pipe.
Further, the solid oxide fuel cell stack and the carbonate fuel cell stack are electrically connected with a power input end of an external electric device, and are used for supplying power to the external electric device.
Further, the oxygen source is a blower for pressing external air into the second heat exchange device and the input port of the solid oxide fuel cell cathode unit;
or the oxygen source is a fan and an ejector, the fan is used for blowing external air into the ejector, and the ejector is used for pressing air into the second heat exchange device and the input port of the solid oxide fuel cell cathode unit.
The invention has the following beneficial effects: the invention fully and effectively recycles the exhaust gas of the solid oxide fuel cell stack and the carbonate fuel cell stack, effectively reduces and reduces the pollution of the tail gas emission of the power generation system to the environment, achieves the effects of energy conservation and emission reduction, adapts to the development trend of the solid oxide fuel cell power generation system, and has wide application prospect.
Drawings
FIG. 1 is a schematic structural diagram of an integrated gas-electricity conversion and energy storage system according to the present invention;
reference numerals are as follows: 10-solid oxide fuel cell stack, 11-solid oxide fuel cell anode unit, 12-solid oxide fuel cell cathode unit, 13-solid oxide fuel cell electrolyte unit, 20-carbonate fuel cell stack, 21-carbonate fuel cell anode unit, 22-carbonate fuel cell cathode unit, 23-carbonate fuel cell electrolyte unit, 30-reformer, 40-gas valve assembly, 50-oxygen source, 60-catalytic combustor, 71-first heat exchange means, 72-second heat exchange means, 1-first preheating means, 2-second preheating means, 3-third preheating means, 4-fourth preheating means.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments have been given like element numbers associated therewith. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present invention have not been shown or described in this specification in order not to obscure the core of the present invention with unnecessary detail, and it is not necessary for those skilled in the art to describe in detail these related operations, so that they can be fully understood from the description in the specification and the general knowledge of those skilled in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the description of the methods may be transposed or transposed in order, as will be apparent to a person skilled in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.
Fig. 1 shows an integrated system for gas-electricity conversion and energy storage based on solid oxide fuel cell, which is composed of a reformer 30, a solid oxide fuel cell stack 10, a carbonate fuel cell stack 20, a gas valve assembly 40, a catalytic combustor 60 and an oxygen source 50.
The solid oxide fuel cell stack 10 and the carbonate fuel cell stack 20 are electrically connected to a power input terminal of an external electrical device, and are used for supplying power to the external electrical device. The solid oxide fuel cell stack 10 is a main power supply stack and comprises a plurality of solid oxide fuel cells, anodes of the plurality of solid oxide fuel cells constitute a solid oxide fuel cell anode unit 11, cathodes of the plurality of solid oxide fuel cells constitute a solid oxide fuel cell cathode unit 12, and a solid oxide fuel cell electrolyte unit 13 is arranged between the solid oxide fuel cell anode unit 11 and the solid oxide fuel cell cathode unit 12.
The carbonate fuel cell stack 20 is an auxiliary power supply stack, and includes a plurality of carbonate fuel cells, anodes of which constitute an anode unit 21 of the carbonate fuel cell, cathodes of which constitute a cathode unit 22 of the carbonate fuel cell, and an electrolyte unit 23 of the carbonate fuel cell between the anode unit 21 of the carbonate fuel cell and the cathode unit 22 of the carbonate fuel cell.
The gas valve assembly 40 is comprised of a first gas inlet, a second gas inlet, a first gas outlet, and a second gas outlet.
The input end of the reformer 30 is connected to a natural gas pipe through a first preheating device 1 and is also connected to a water pipe through a second preheating device 2, and the natural gas pipe and the water pipe are respectively used for receiving natural gas and water; the output end of which is connected to the first inlet of the gas valve assembly 40.
The first exhaust port of the gas valve assembly 40 is connected to the input port of the anode unit 21 of the carbonate fuel cell through the first heat exchanging device 71, and the second exhaust port thereof is connected to the input port of the anode unit 11 of the solid oxide fuel cell through the fourth preheating device 4. The outlet of the anode sofc unit 11 is connected to the second inlet of the gas valve assembly 40, and the outlet of the cathode sofc unit 12 is connected to the exhaust gas drain.
The air supply outlet of the oxygen source 50 is connected to the input port of the cathode unit 22 of the carbonate fuel cell through the second heat exchanging device 72, and is also connected to the input port of the cathode unit 12 of the solid oxide fuel cell through the third preheating device 3.
The output of the carbonate fuel cell anode unit 21 is connected to the input of the carbonate fuel cell cathode unit 22 through the catalytic combustor 60 and the second heat exchange device 72 together with the output of the carbonate fuel cell cathode unit 22.
In this embodiment, the oxygen source 50 may be a blower for forcing outside air into the second heat exchange device 72 and the input of the sofc cathode unit 12. In other embodiments of the invention, the oxygen source 50 is a fan for blowing external air into the injector and an injector for forcing air into the second heat exchange means 72 and the inlet of the SOFC cathode unit 12.
The input of the carbonate fuel cell cathode unit 22 is also connected to the primary CO via a second heat exchange means 72 2 A supply container.
The working principle of the gas-electricity conversion and energy storage integrated system of the embodiment is as follows:
the reformer 30 receives natural gas and water and reforms the natural gas at a preset temperature of 700 ℃, and the chemical reaction formula in the reformer 30 is:
CH 4 +H 2 O→3H 2 +CO；CO+H 2 O→H 2 +CO 2 。
the reformer 30 outputs the resulting gas mixture after reforming to the gas valve assembly 40.
The solid oxide fuel cell stack 10 is the main power supply stack, and the second exhaust port of the gas valve assembly 40 discharges H 2 The solid oxide fuel cell anode unit 11 is input through the fourth preheating device 4.
The air supply outlet of the oxygen source 50 supplies oxygen to the input port of the cathode unit 12 of the solid oxide fuel cell through the third preheating device 3.
The chemical reaction formula of the solid oxide fuel cell anode unit 11 is:
H 2 +O 2- →H 2 O+2e；
the chemical reaction formula of the solid oxide fuel cell cathode unit 12 is:
O 2 +4e→2O 2- ；
the preset reaction temperature of the solid oxide fuel cell stack 10 is 800 ℃, and the total reaction formula is as follows:
2H 2 +O 2 →2H 2 O。
the carbonate fuel cell stack 20 is an auxiliary power supply stack, and the first exhaust port of the gas valve assembly 40 inputs H2 to the input port of the anode unit 21 of the carbonate fuel cell through the first heat exchange device 71.
A supply air outlet of the oxygen source 50 provides oxygen to the input of the cathode unit 22 of the carbonate fuel cell via a second heat exchange means 72.
In the initial stage of the system start-up operation, an initial CO is also required 2 The supply vessel provides an initial stage of CO to the input of the cathode unit 22 of the carbonate fuel cell 2 So that the carbonate fuel cell stack 20 starts a chemical reaction. In the course of the system having been in operation, the initial CO is no longer required 2 Supply vessel for supplying CO 2 。
The chemical reaction formula of the carbonate fuel cell anode unit 21 is:
H 2 +CO 3 2- →2H 2 O+CO 2 +2e；
the chemical reaction formula for the carbonate fuel cell cathode unit 22 is:
O 2 +2CO 2 →4e+2CO 3 2-
the preset reaction temperature of the carbonate fuel cell stack 20 is 650-700 ℃, and the total reaction formula is as follows:
2H 2 +O 2 +2CO 2 →2H 2 O+2CO 2 。
the gas-electricity conversion and energy storage integrated system can discharge H from the output port of the anode unit of the solid oxide fuel cell 2 Gas and H not fully utilized by chemical reaction 2 Gas is fed back to the gas valve assembly so that H 2 The gas is recycled. CO at the input of the cathode unit of a carbonate fuel cell 2 The method has the advantages that the exhaust gas discharged from the output port of the anode unit of the carbonate fuel cell is circulated, the optimal efficiency is achieved through a multiple circulation system, namely in the circulation process, the exhaust gas enters the cathode through catalytic combustion separation after the anode exhaust gas and participates in the reaction of the cathode, and the electrode gas of the carbonate fuel cell group reaches the appropriate reaction proportion through multiple circulation, so that the maximum power generation efficiency of the cell is realized, the fuel is fully utilized, and the utilization rate of the fuel is improved.
The present invention has been described in terms of specific examples, which are provided to aid in understanding the invention and are not intended to be limiting. Numerous simple deductions, modifications or substitutions may also be made by those skilled in the art in light of the present teachings.
Claims (10)
1. The gas-electricity conversion and energy storage integrated system based on the solid oxide fuel cell is characterized by comprising a reformer (30), a solid oxide fuel cell stack (10), a carbonate fuel cell stack (20), a gas valve assembly (40), a catalytic combustor (60) and an oxygen source (50);
the solid oxide fuel cell stack (10) is a main power supply stack and comprises a plurality of solid oxide fuel cells, anodes of the solid oxide fuel cells form a solid oxide fuel cell anode unit (11), cathodes of the solid oxide fuel cells form a solid oxide fuel cell cathode unit (12), and a solid oxide fuel cell electrolyte unit (13) is arranged between the solid oxide fuel cell anode unit (11) and the solid oxide fuel cell cathode unit (12);
the carbonate fuel battery pack (20) is an auxiliary power supply battery pack and comprises a plurality of carbonate fuel batteries, anodes of the carbonate fuel batteries form a carbonate fuel battery anode unit (21), cathodes of the carbonate fuel battery anode unit form a carbonate fuel battery cathode unit (22), and a carbonate fuel battery electrolyte unit (23) is arranged between the carbonate fuel battery anode unit (21) and the carbonate fuel battery cathode unit (22);
the input end of the reformer (30) is connected to a natural gas pipe through a first preheating device (1) and is also connected to a water pipe through a second preheating device (2); the output end of the first air inlet is connected to the first air inlet of the air valve component (40);
the gas valve assembly (40) comprises a first gas inlet, a first gas outlet and a second gas outlet;
the first exhaust port of the gas valve assembly (40) is connected to the input port of the carbonate fuel cell anode unit (21) via a first heat exchange means (71);
the air supply outlet of the oxygen source (50) is connected to the input port of the carbonate fuel cell cathode unit (22) through a second heat exchange device (72), and is also connected to the input port of the solid oxide fuel cell cathode unit (12) through a third preheating device (3);
the output port of the carbonate fuel cell anode unit (21) and the output port of the carbonate fuel cell cathode unit (22) are connected to the input port of the carbonate fuel cell cathode unit (22) through the catalytic combustor (60) and the second heat exchange device (72);
the second exhaust port of the gas valve assembly (40) is connected to the input port of the solid oxide fuel cell anode unit (11) through a fourth preheating device (4).
2. The integrated solid oxide fuel cell-based gas-to-electricity conversion and energy storage system of claim 1, wherein the gas valve assembly (40) further comprises a second gas inlet, and the output of the solid oxide fuel cell anode unit (11) is connected to the second gas inlet of the gas valve assembly (40).
3. The integrated solid oxide fuel cell-based gas-to-electricity conversion and energy storage system of claim 1, wherein the input of the carbonate fuel cell cathode unit (22) is further connected to the primary CO via the second heat exchange means (72) 2 A supply container;
the initial CO 2 Supply vessel for supplying CO 2 。
4. The integrated solid oxide fuel cell-based gas-to-electricity conversion and energy storage system of claim 1, wherein the reformer (30) reforms natural gas with a preset temperature of 690-710 ℃;
the preset reaction temperature of the solid oxide fuel cell stack (10) is 790-810 ℃;
the preset reaction temperature of the carbonate fuel cell stack (20) is 650-700 ℃.
5. The integrated solid oxide fuel cell based gas-to-electricity conversion and energy storage system of claim 1, wherein the chemical reaction formula in the reformer (30) is:
CH 4 +H 2 O→3H 2 +CO；CO+H 2 O→H 2 +CO 2 。
6. the integrated solid oxide fuel cell-based gas-to-electricity conversion and energy storage system according to claim 1, wherein the chemical reaction formula of the solid oxide fuel cell anode unit (11) is:
H 2 +O 2- →H 2 O+2e；
the chemical reaction formula of the solid oxide fuel cell cathode unit (12) is as follows:
O 2 +4e→2O 2- ；
the overall reaction formula of the solid oxide fuel cell stack (10) is:
2H 2 +O 2 →2H 2 O。
7. the integrated solid oxide fuel cell-based gas-to-electricity conversion and energy storage system of claim 1, wherein the chemical reaction formula of the carbonate fuel cell anode unit (21) is as follows:
H 2 +CO 3 2- →2H 2 O+CO 2 +2e；
the chemical reaction formula of the cathode unit (22) of the carbonate fuel cell is as follows:
O 2 +2CO 2 →4e+2CO 3 2-
the overall reaction formula of the carbonate fuel cell stack (20) is:
2H 2 +O 2 +2CO 2 →2H 2 O+2CO 2 。
8. the integrated solid oxide fuel cell based gas-to-electricity conversion and energy storage system of claim 1, wherein the output of the solid oxide fuel cell cathode unit (12) is connected to an exhaust gas duct.
9. The integrated solid oxide fuel cell-based gas-to-electricity conversion and energy storage system according to any one of claims 1 to 8, wherein the solid oxide fuel cell stack (10) and the carbonate fuel cell stack (20) are electrically connected to a power input terminal of an external electrical device for supplying power to the external electrical device.
10. The integrated solid oxide fuel cell based gas to electricity conversion and energy storage system of any one of claims 1 to 8, wherein the oxygen source (50) is a blower for forcing outside air into the second heat exchange means (72) and the inlet of the cathode unit (12) of the solid oxide fuel cell;
alternatively, the oxygen source (50) is a fan for blowing external air into the ejector and an ejector for forcing air into the second heat exchange means (72) and the inlet of the solid oxide fuel cell cathode unit (12).
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