换热器设计中无相变温度交叉问题的技术措施
Technical Measures on the Temperature Cross Problem in the Design of Heat Exchangers without Phase Change Process
邴柳洁1
作者信息
- 1. 北京石油化工工程有限公司,北京 100107
- 折叠
摘要
在换热器工艺设计过程中,为保证传热过程有足够的推动力,应避免温度交叉问题.然而,为满足工艺要求,换热器经常需要设计为多管程型式.多管程换热器流体的流动形式较为复杂,折流、错流并存,很难达到纯逆流的情形,从而会出现温度交叉问题.通过一个无相变的工程实例,提出了两种解决温度交叉问题的方法,并基于工艺条件,对该换热器进行了较为详细的工程设计.
Abstract
In the process of heat exchanger process design,to ensure sufficient driving force for the heat transfer process,temperature crossing issues should be avoided.However,in order to meet the process requirements,heat exchangers often need to be designed with multiple tube passes.The flow pattern of fluid in multi tube heat exchangers is relatively complex,with both zigzag and cross flow coexisting,making it difficult to achieve pure reverse flow,resulting in temperature crossing problems.This article proposes two methods to solve the temperature crossing problem through an engineering example without phase change,and based on process conditions,a detailed engineering design was carried out for the heat exchanger.
关键词
换热器/温度交叉/流体流动/HTRIKey words
heat exchanger/temperature crossover/fluid flow/HTRI引用本文复制引用
出版年
2024
NETL
NSTL
万方数据