微热光电系统燃烧室内突扩台加工位置的选择  

Selection of Sudden Step Position on Combustor in a Micro-thermophotovoltaic System

作　　者：徐斌[1] 吴军[1] 吴健[1] 薛宏 

机构地区：[1]河南科技大学车辆与动力工程学院,河南洛阳471003 [2]加利福尼亚州立工业大学动力机械学院,加利福尼亚州洛杉矶ca91768

出　　处：《河南科技大学学报（自然科学版）》2011年第6期19-23,5,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(50976028)

摘　　要：通过实验找出微热光电系统燃烧室在最优影响因素下的各测温点的温度值,用灰色系统理论对其建立灰色预测模型,预测最高温度值所处位置。由普朗克定律可知:温度值的高位变动对辐射力产生的影响要比低位变动大。突扩台加工位置从壁面温度的最高点处开始,既增加了微热光电系统燃烧室外壁面最大温度值,又减缓了壁面温度的最大值到出口处的温度分布,对提高微型热光电系统的热电转化效率有显著作用。The temperature at measuring points of micro-thermophotovoltaic combustor with the best influence factors was identified in the test,and the grey prediction model was used to forecast the position of the highest temperature,which was established with the gray system theory.From the Planck＇s law of radiation,high variation of temperature will have a greater influence on the radiation force than low variation.Sudden expansion structure is selected at the peak position of wall temperature,to further increase the maximum temperature and give a gentle temperature distribution from the maximum wall temperature to the outlet temperature.The conversion efficiency of the whole micro-thermophotovoltaic system is improved obviously.

关 键 词：微燃烧室 微热光电系统 截面突变 壁面温度 

分 类 号：TK5[动力工程及工程热物理—热能工程]