摘要
采用正三角形排列,壳体直径为 325 mm,换热管规格为φ25 mm×2.5 mm、长度为2 000 mm、数目为 52 根,折流挡板间距 220 mm布置,建立换热器的模型.通过计算冷流体(循环水)和热流体(氯苯)在换热器中的传热,得到热负荷、传热平均温差、传热面积、循环水用量.通过仿真分析E型、F型、J型壳体换热器的温度场、速度场、壁抬升距离,结果表明E型壳体换热器的温差、流速、换热最符合预设换热需求.同时为换热器结构设计提供了参考.
Abstract
The heat exchanger model is established by arranging regular triangles,among which the shell diameter is 325 mm,the heat exchange tube specifications are φ25 mm×2.5 mm,The length is 2 000 mm,the number is 52,and the baffle spacing is 220 mm.The heat load,the average temperature difference of heat transfer,the heat transfer area,and the amount of circulating water are obtained by calculating the heat transfer of the cold fluid(circulating water)and the hot fluid(chlorobenzene)in the heat exchanger.The temperature field,velocity field and wall lifting distance of E-type,F-type and J-type shell heat exchangers are analyzed through simulation analysis,and the results show that the temperature difference,flow rate and heat exchange of E-type shell heat exchangers are optimal.This paper provides a reference for the structural design of the heat exchanger.
基金项目
福州职业技术学院校级青年基金(FZYKJJJQN202201)
福建省中青年教师教育项目(JAT210814)
维普
万方数据