列管式换热器-煤油换热器-工程原理课设.doc

列管式换热器-煤油换热器-工程原理课设————————————————————————————————作者:————————————————————————————————日期: 南京工业大学《材料工程原理B》课程设计设计题目:列管式换热器设计—煤油处理能190000吨/年专业:无机非金属材料工程班级:卓越工程师班学号:1101130317姓名:刘业奇日期:2016年11月25日~2016年12月9日指导教师:钱海燕设计成绩:日期:目录一、设计任务书····························································二、设计方案简介····································································································································································三、主要物性参数··························································四、计算传热面积···········································································································································································································································五、换热器工艺结构尺寸·····················································1..初选换热器规格··············································································································六、换热器核算············································································································································································································································七、设计结果概要···························································八、设计的评述·····························································九、主要参考资料···························································十、换热器总装配图·························································一、设计任务书在某生产过程中,用循环冷却水将煤油油由102℃冷却至40℃。已知换热器的年处理量为19×104吨/年;水的进口温度和出口温度分别为20℃和28℃。假设每年按330天计,每天24小时连续运行,试设计一台列管式换热器,完成该生产任务。1、处理能力列管换热器设计—煤油处理能力19×104吨/年2、设备型式列管式换热器3、操作条件(1)釜残液:煤油,入口温度102℃,出口温度40℃(2)冷却介质:井水(3)换热器的管程和壳程压强降:不大于50kPa(4)煤油平均温度下的物性参数:名称(kg/m3)Cp(kJ/㎏.℃)()(W/m.℃)×10-、设计方案简介在本次设计任务中,两流体的温度变化情况为:热流体(煤油)进口温度102℃,出口温度40℃;冷流体(井水)进口温度为20℃,出口温度28℃。由于冷、热流体间温差不大于50℃,故选用固定板式列管换热器,换热器两端管板和壳体连接成一体。这类换热器结构简单,价格低廉,但管外清洗困难,宜处理两流体温差小于50℃且壳方流体较清洁