三维内肋管在细颗粒流化床中的传热试验研究  

Experimental Study on Heat Transfer Characteristics of Three-dimensional Internally Finned Tube in a Fluidized Bed of Fine Particles

作　　者：宋杨凡 卢啸风[1] 王泉海[1] 宗琛[1] 郭强[1] 徐杰[1] 杨宇[1] 陈晔[1] 严谨[1] 孙思聪 

机构地区：[1]低品位能源利用技术及系统教育部重点试验室(重庆大学),重庆市沙坪坝区400044

出　　处：《中国电机工程学报》2017年第2期614-620,共7页Proceedings of the CSEE

基　　金：四川省科委2012年重大科技成果转化项目(2012GC0046);重庆市基础与前沿研究计划项目(cstc2014jcyj A20018)~~

摘　　要：以道达尔Seriola 3120导热油为工质,搭建了一个循环流化床导热油换热特性试验台,对光管和三维内肋管在细颗粒流化床中的换热特性进行了试验研究。试验的Re为150~2200,Pr为10~120。试验结果表明:在本试验范围内,三维内肋管管内对流换热系数是光管管内流换热系数的2.2~2.7倍,三维内肋管内壁温能控制在导热油安全运行温度范围之内。Experimental study on convective heat transfer in three-dimensional internally finned tube（3IFT） was performed in a self-built circulating fluidized bed test apparatus of fine particles to investigate the characteristics of heat transfer. The working fluid was Total Seriola 3120 thermal oil. The ranges of experimental variables were 150 〈 Re 〈 2200 and 10 〈 Pr〈120. The experimental results show the convective heat transfer coefficient in 3IFT can be increased by 2.2~2.7 times compared with smooth tube, the inner tube temperature can be kept in a safe range.

关 键 词：导热油 流化床 细颗粒 换热特性 三维内肋管 

分 类 号：TK121[动力工程及工程热物理—工程热物理]