微热光电系统中多孔介质燃烧室性能试验  

Experiment on Porous Media Combustor of Micro-thermophotovoltaic System

作　　者：潘剑锋[1] 张会峰[1] 唐爱坤[1] 李德桃[1] 丁建宁[2] 薛宏 

机构地区：[1]江苏大学能源与动力工程学院,镇江212013 [2]江苏大学微米纳米技术研究中心,镇江212013 [3]美国加州州立工业大学机械工程学院

出　　处：《农业机械学报》2010年第5期193-197,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50706016);江苏省基础研究计划资助项目(BK2008245);江苏省高校自然科学基金资助项目(07KJB470015);江苏省"青蓝工程"资助项目;江苏大学"拔尖人才培养工程"资助项目

摘　　要：为优化燃烧室,设计加工了内径2.4 mm、外径3.0 mm的多种不同孔隙率的多孔介质结构微燃烧室,并在燃烧室内实现了氢氧混合气的稳定燃烧。改变氢氧体积混合比和混合气入口流量,对多孔介质微燃烧室进行了相关试验,分析了各种条件下微燃烧室的燃烧情况及外壁面的温度分布。研究结果表明,这些因素对混合气在微燃烧室内的燃烧有重要影响。多孔介质燃烧室在孔隙率为0.50,混合气入口流量为750 cm3/min,氢氧体积混合比为2∶1时燃烧效果较好,外壁面温度高且分布均匀,适合微热光电系统的应用。To improve the efficiency of the micro-thermophotovoltaic system,the radiation energy output of micro-combustor has to be uniform and possibly in the short-wave photon energy range,which requires high and uniform temperature along the micro-combustor＇s external wall.In order to further optimize the micro-combustor,different porous media combustors with the inner and external diameters of 2.4mm and 3.0mm were designed.After stable combustion of hydrogen and oxygen in the porous media combustors,experimental investigation was carried out against micro-combustor with different hydrogen-oxygen volume ratios,mixing gas flux and porosity,the combustion performance and external wall temperature distribution under different conditions were analyzed.The results indicated that the porosity,mixing gas flux and hydrogen-oxygen volume mixing ratio had significant effect on the mixture combustion in micro-combustor.When the porosity,mixing gas flux and hydrogen-oxygen volume mixing ratio were separately 0.50,750cm3/min and 2∶1,the micro-combustor showed a better combustion performance,including high and uniform temperature distribution along the external wall of micro-combustor,which was suitable for application to micro-thermophotovoltaic system.

关 键 词：微热光电系统 微燃烧室 多孔介质 壁面温度 试验 

分 类 号：TK5[动力工程及工程热物理—热能工程]