高效蓄热室阻力及传热特性  

Resistance and Heat Transfer Characteristics of Highly Efficient Regenerator

作　　者：温良英[1] 韩明荣[2] 董凌燕[1] 陈登福[1] 张正荣[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400030 [2]重庆科技学院冶金与材料工程系,重庆400050

出　　处：《燃烧科学与技术》2005年第6期506-510,共5页Journal of Combustion Science and Technology

基　　金：重庆市科学技术委员会应用基础研究资助项目(8026)重庆大学骨干教师计划资助项目(7134110011).

摘　　要：根据蓄热室结构特性,建立了高效蓄热室阻力特性和传热特性的数学模型．通过实验分析了单位球层上的无因次阻力(单位阻力系数)与流体速度、温度的依变关系;分析了蓄热体、换向时间等对烟气的排放温度和空气的预热温度的影响,得出了高效蓄热室温度效率和热效率．采用刚玉质小球的适宜换向时间为60 s,高效蓄热室的温度效率为83．6％,热效率为72．8％．On the base of regenerator configuration character, the mathematics models describing its resistance and heat transfer characteristic are set up. The relationships between the non-unit resistance unit layer packed with balls （ unit resistance coefficient） and the flow medium＇s velocity, temperature are revealed by tests. The influences of regenerator and exchange time on exhaust gas temperature and air preheat temperature ai＇e analyzed. The temperature efficiency and thermal efficiency of regenerator are obtained. On the case of experiment, the suitable exchange time is about 60 s for corundum globule. The temperature efficiency is 83.6%0 and the thermal efficiency is 72.8% for the highly efficient regeneratior.

关 键 词：蓄热室 单位阻力系数 换向时间 温度效率 热效率 

分 类 号：TF538.6[冶金工程—钢铁冶金]