熔融碳酸盐燃料电池单体数值模拟及性能分析

介绍了熔融碳酸盐燃料电池的原理.认为燃料电池内部的温度、电流密度和反应气体浓度等分布参数对燃料电池的安全、高效运行具有重要的影响,准确地预测燃料电池的温度场、电流密度场和反应气体的浓度场具有十分重要的意义.在考虑熔融碳酸盐燃料电池内部电特性和热特性的基础上,建立了熔融碳酸盐燃料电池单体准二维数学模型.利用该模型对逆流形式的熔融碳酸盐燃料电池单体的主要性能参数进行了稳态数值模拟.仿真结果对于熔融碳酸盐燃料电池的设计及运行具有一定的参考价值.

Numerical simulation and performance analysis of molten carbonate fuel cells

The working principle of the molten carbonate fuel cell(MCFC) is a heat and mass transfer process going with electrochemical reactions.Since the temperature,current density,and gas species concentration within the full cell exert great influence on its operation,so it is very important to predict the distribution of the temperature,current density,and gas species concentration within the full cell.Based on the internal electrical and thermal characteristics of MCFC,the quasi two-dimensional mathematic model for MCFC was established,by witch the steady numerical simulation of the main performance parameters for the counterflow MCFC was conducted.