化工原理设计 原油换热器.doc

实用文档 PAGE 文案大全 化工原理课程设计 题 目:原油加热器 ——固定式换热器 指导教师: 李先生院士 职 称: 国家特级院士 班 级: 高分子材料与工程系 学 号: 学生姓名: 目录 一．绪论·····················································································3 二、设计条件及主要物性参数··························································4 1、设计条件···········································································4 2、定性温度的确定··································································4 三. 确定设计方案··········································································5 选择换热器的类型································································5 2、流程安排···········································································5 估算传热面积·····································································5 1、热流量 ··············································································5 2、平均传热温差 ·····································································5 3、传热面积 ···········································································5 五．工程结构尺寸 ·········································································6 1、管径和管内流速 ··························································6 管程数和传热管数 ··························································6 平均传热温差校正及壳数 ······················································6 传热管的排列和分程方法 · ··············································7 5、折流板 ··············································· 7 6、接管 ···············································7 六、换热器核算 ··············································· 8 1、壳程传热系数 ···············································8 2、管程传热系数 ···············································8 3、污垢热阻和管壁热阻 ···············································9 4、总传热系数K ···············································10 5、传热面积裕