Multi-dimension analogy method of solid-oxide fuel battery

A technology of solid oxides and fuel cells, applied in electrical digital data processing, instruments, calculations, etc., to achieve the effects of strong adaptability, clear physical meaning, and high accuracy

Inactive Publication Date: 2008-12-17
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to effectively model solid oxide fuel cells based on multiscale simulation is another important issue that has not been well resolved in the field of advanced energy applications

Method used

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  • Multi-dimension analogy method of solid-oxide fuel battery
  • Multi-dimension analogy method of solid-oxide fuel battery
  • Multi-dimension analogy method of solid-oxide fuel battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] Example: For a multi-scale simulation of a certain tubular solid oxide fuel cell, Table 1 shows the geometric dimensions of the SOFC.

[0042] Table 1 Geometric parameters of SOFC

[0043]

[0044] Figure 5 H is calculated for the lattice Boltzmann method (LBM) when the reaction reaches equilibrium at 1000°C in this example 2 Since the initial condition adopts a normal random distribution, the concentration after the reaction balance is still a normal distribution, and the concentration value on each grid node changes slightly. This change is very small. Basically, it can be considered that the concentration after the reaction reaches equilibrium is evenly distributed. Depend on Figure 6 It can be seen that there are two dark strips with speed close to zero at the top and bottom. The innermost two are the air ducts, which have zero velocities due to the no-slip solid boundary condition. The two dark areas slightly outside are the cathode / electrolyte / anode laye...

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Abstract

The invention relates to a multi-scale simulation method for solid oxide fuel cells, and is characterized in that the method conducts multi-scale simulation from the mesoscopic scale to the macro equipment scale for complex physical and chemical phenomenon, such as coupled heat calorie transmission, electrochemical reaction in the solid oxide fuel cells, etc. The invention further relates to an integration and co-simulation method of a multi-scale model. Because a modeling method provided by the invention adopts the modeling method by mechanism from the macro-scale based on the phenomenon, the model has the advantages of clear physical meaning, high accuracy and strong adaptability. A simulation method is adopted between the mesoscopic scale and the macro equipment scale based on molecules or molecular clusters, thereby compensating for a deficiency of traditional single scale simulation. Layered method and the method of different scales are combined to study the complex system, so as to be conducive to disclosing the nature of complex systems, such the solid oxide fuel cells and provide a novel means for studying complex the systems.

Description

technical field [0001] The invention relates to a multi-scale simulation method of an advanced energy system, in particular to a multi-scale simulation method of a solid oxide fuel cell. Background technique [0002] Solid Oxide Fuel Cell (Solid Oxide Fuel Cell, referred to as SOFC) belongs to the third-generation fuel cell, which is an all-solid-state device that directly converts the chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner at medium and high temperatures. Chemical power plant. It has the characteristics of high efficiency, no pollution, all-solid structure and wide adaptability to various fuel gases. [0003] The working principle of SOFC is the same as that of other fuel cells, and it is equivalent to the "reverse" device of water electrolysis in principle. Its single cell is composed of anode, cathode and solid oxide electrolyte. The anode is the place where the fuel is oxidized, and the cath...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 杨晨张雨英马旭徐泽亚苟小龙唐胜利
Owner CHONGQING UNIV
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