多孔介质燃烧-换热器的二维数值研究  

Two-dimensional numerical study of porous media combustion-heater

作　　者：史俊瑞[1] 解茂昭[2] 韩春福[1] 李军[3] 李刚[3] 

机构地区：[1]沈阳工程学院沈阳市循环流化床燃烧技术重点试验室,辽宁沈阳110136 [2]大连理工大学能源与动力学院,辽宁大连116024 [3]大连大学建筑工程学院,辽宁大连116622

出　　处：《化工学报》2009年第5期1116-1120,共5页CIESC Journal

基　　金：辽宁省教育厅科学研究计划项目(2008491);辽宁省博士启动基金项目(20081073);国家自然科学基金项目(50476073)~~

摘　　要：通过二维数值模型研究了多孔介质燃烧-换热器。在宽广的工况范围内,研究多孔介质燃烧-换热器内的温度、速度分布和压力损失,研究主要工作参数过量空气系数和功率对换热管总的热效率的影响。结果表明,过量空气系数和功率对总的热效率有显著的影响,随二者的增大,总的热效率降低。实验验证了数值计算结果的有效性。The two-dimensional numerical investigations on the porous media combustion-heater were presented. Temperature distribution, velocity profiles, and pressure loss were investigated in a wide range of operation parameters. Attention was focused on the influence of the dominating parameters, i. e. , the excess air ratio and firing rate, on the thermal efficiency. The results showed that the excess air ratio and firing rate had significant influence on thermal efficiency, and the overall thermal efficiency decreased with increasing excess air ratio or firing rate. Numerical results were validated against experiment data.

关 键 词：数值研究 多孔介质 燃烧-换热器 

分 类 号：TK411.1[动力工程及工程热物理—动力机械及工程]