一体式再生燃料电池运行模式切换非稳态过程电化学反应耦合热质传递

项目名称： 一体式再生燃料电池运行模式切换非稳态过程电化学反应耦合热质传递

项目编号： No.51476003

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 能源与动力工程

项目作者： 郭航

作者单位： 北京工业大学

项目金额： 83万元

中文摘要： 以采用质子交换膜为电解质的一体式再生燃料电池为研究对象，针对其在燃料电池模式和电解池模式之间切换运行时的非稳态过程中与电化学反应耦合的传热传质基础问题，采用瞬态温度/热流分布实测技术、电池微细通道内气液两相流现场可视化观测技术、再生燃料电池热流体数值模拟技术及电性能动态响应测试技术等研究手段，探索一体式再生燃料电池内部气液两相体系，分析再生燃料电池动态特性，确定其非稳态传热传质优化方案。项目预期将揭示一体式再生燃料电池内部气液两相体系的非稳态演化规律，实现再生燃料电池内局部温度、局部热流密度瞬态分布的实测，建立一体式再生燃料电池热流体数学模型。项目研究成果对阐明与交替变化的电化学反应相耦合的非稳态热质传递机理，揭示运行模式切换时一体式再生燃料电池的动态响应的内在规律具有重要意义，为一体式再生燃料电池的热流体精细化管理提供基础数据。

中文关键词： 再生燃料电池；氢能；传热；传质；两相流

英文摘要： Focusing on unitized regenerative fuel cells with solid polymer electrolyte, transient heat transfer coupled with electrochemical reactions alternations, gas and liquid transport and mass transfer enhancement in unsteady process caused by operation mode switch, flow pattern and characteristics of gas-liquid two-phase system under boundary conditions of different electrochemical reactions, dynamic response characteristics of unitized regenerative fuel cells will be studied in this project. Thin film transient heat flux gages, micro thermocouples, in-situ observation technology for gas-liquid two-phase flow in micro/small channels, computational fluid dynamics numerical simulation, measuring and testing technique for dynamic response of fuel cells etc. will be adopted to investigate evolution of gas-liquid two-phase system and transient heat and mass transfer and its influence factors. The optimal design for heat and mass transfer in unitized regenerative fuel cells will be proposed. This project will provide fundamental data for the fine dynamic thermal and fluid management of unitized regenerative fuel cells.

英文关键词： Regenerative fuel cells;Hydrogen energy;Heat transfer;Mass transfer;Two-phase flow