纸张脉动燃烧尾气冲击流干燥过程的实验研究  

Analysis of The Drying Process of Pulse Combustion Impingement

作　　者：景婷婷[1] 刘相东[1] 杨柳[1] 吴中华[2] 

机构地区：[1]中国农业大学工学院,北京100083 [2]天津科技大学机械工程学院,天津300222

出　　处：《干燥技术与设备》2013年第5期41-46,共6页

基　　金：国家自然基金项目资助项目(51076163)

摘　　要：脉动燃烧因其传热效率高、结构紧凑、环境污染小等优点而广泛应用于生产生活中,冲击干燥同样也能形成强烈的热质交换,本文将上述两种干燥技术结合应用。为了探讨脉动燃烧尾气冲击流干燥的性能,研制了小型Helmholtz脉动燃烧器,并对脉动燃烧尾气冲击流干燥技术应用于纸张的干燥过程进行了实验研究。分析了气流辐射半径和燃料流量两个参数对干燥过程的影响,可以看出随着气流辐射半径的增加,干燥速度降低。此外还对不同干燥条件下的纸张干燥时间进行了估计,为实际生产提供参考。Because of the high heat transfer efficiency, compact structure and little pollution, pulse combustion is widely used. The impingement drying can also get intensive heat and mass transfer, these two technology were combined in this paper. The experiment was carried out on the self-developed experimental equipment, a small-scale Helmholtz pulse combustor, and and fuel flow rate were observed and we can obtain that the drying rate radiation radius of the flow. In addition, the drying time under different provides a reference for practical production. the influences of radiation decreases with the increase radius of conditions were estimated, and this

关 键 词：脉动燃烧 冲击流 干燥过程 

分 类 号：TK124[动力工程及工程热物理—工程热物理]