管壳式换热器壳侧流动分析  

Stream analysis for shell-side in shell-and-tube heat exchanger

作　　者：孙启鹏[1] 

机构地区：[1]洛阳理工学院,471003

出　　处：《中国科技信息》2008年第1期59-61,共3页China Science and Technology Information

摘　　要：针对工业中广泛应用的管壳式换热器,比较了几种壳侧流动的分析方法,并在此基础上提出了适宜于单相和气液两相流路分析法的壳侧单元流动模型。以主流、旁路流和泄漏流等各分流路的气液流量分布在稳态下应使壳侧流动的能量损耗达到最小的原则为基础,建立了壳侧气液两相流路分析法,给出了各流路的气液流量比例及错流区、窗口区压降的预测步骤,也给出了壳侧总压降计算式。建立的两相流路分析法预测结果与试验结果符合较好。A flow model, which is suitable for single-phasw and two-phase stream analysis, w as proposed for shell- side flow of shell-and-tube heat exchanger that is widely used in industry. According to the principle that the gas and liquid flow-rates distribute in different streams, such as main stream, bypass steam and leakage streams, should result in a minimum energy loss in steady state, a ga s-liquid two-phase stream analysis method was developed, The gas and liquid percentages of every flow stream and the predicting procedures of pressure drop m cross zone and window zone were provided. The calculating correlations of total pressure drop in shell-side were presented. The results are in good agreement with the experimental results.

关 键 词：管壳式换热器 两相流动特性 两相流路分析法 流路 

分 类 号：TB657.5[一般工业技术—制冷工程]