带有预热通道的微平行板燃烧器的数值模拟  

Numerical simulation of plane cell micro-combustor with preheating channels

作　　者：唐爱坤[1] 潘剑锋[1,2] 薛宏 李晓春[1] 段炼[1] 李德桃[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]江苏省流体机械工程技术研究中心,江苏镇江212013 [3]美国加州州立工业大学,加州洛杉矶ca91768

出　　处：《江苏大学学报（自然科学版）》2011年第1期65-69,共5页Journal of Jiangsu University：Natural Science Edition

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

摘　　要：为进一步提高平行板微热光电系统的整体转化效率和工作性能,设计了一种带有预热通道的新型微平行板燃烧器,采用数值模拟的研究方法,对比了入口氢气、氧气当量比为1.00,总流量为900 mL/min时有无预热通道的2种燃烧室内部、辐射壁面以及出口截面的温度分布.计算结果表明:氢气、氧气在2种燃烧器中混合充分,均能实现稳定的燃烧,而预热通道的设置则可通过提高燃料和氧化剂的进气焓值,从而改善了燃烧的效果,最终使辐射外表面平均温度增加了105 K,有利于提高微热光电系统的功率输出和光电转换效率.In order to improve the total transition efficiency and workability of plane cell micro-thermophotovoltaic system,a new plane cell micro-combustor with preheating channels is designed.Numerical simulation is used to predict the temperature distribution of inner combustor,emitter wall and outlet section with and without preheating channels while the inlet equivalence ratio of hydrogen and oxygen is 1.00 and volume flux is 1 500 mL/min.The results show that hydrogen and oxygen can fully mix in the two combustors and realize stable combustion.The use of preheating channels can improve combustion effect by increasing the enthalpy of fuel and oxidant,and finally increase the average temperature of the emitter wall by 105 K which is highly favourable to the increase of power output and photoelectric transition efficiency.

关 键 词：平行板燃烧器 微热光电系统 预热通道 辐射壁面 数值模拟 

分 类 号：TK5[动力工程及工程热物理—热能工程]