齐齐哈尔大学机电工程学院页-NUMPAGES35-化工原理课程设计柴油加热器设计说明书设计者：班级：过控114班组长：何.成员：李..张..崔..杨..日期：2013年8月20日指导教师设计成绩目录一．设计说明································································二．概述·······································································三．设计条件及主要物性的确定··················································1．定性温度的确定·························································2．流体有关物性···························································四.确定设计方案······························································选择换热器的类型······················································五．估算传热面积·····························································传热器的热负荷·······················································平均传热温差·························································传热面积估算·························································六．工程结构尺寸·····························································管径和管内流速························································管程数和传热管数······················································平均传热温差校正和壳程数··············································传热管排列和分程方法··················································壳程内径······························································折流板································································其他附件······························································接管··································································七．换热器核算·································································1.热流量核算·······························································（1）壳程表面传热系数···················································（2）管程表面传热系数···················································（3）污垢热阻和管壁热阻·················································（4）传热系数K·························································（5）传热面积裕度·······················································2.壁温核算·································································3.换热器内流