垂直非结构模型应用于换热网络优化  

A Vertical Node-wise Non-structural Superstructure Model for Heat Exchanger Network Optimization

作　　者：李万总 崔国民[1] 孙涛[1] 肖媛[1] LI Wanzong;CUI Guomin;SUN Tao;XIAO Yuan(Institute of New Energy Science and Technology,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学新能源科学与工程研究所,上海200093

出　　处：《计算物理》2020年第4期448-458,共11页Chinese Journal of Computational Physics

基　　金：国家自然科学基金(51176125)资助项目。

摘　　要：节点非结构模型优化换热网络时会出现换热器交叉排列的情况,分析发现在相同传热负荷下交叉结构比垂直结构换热单元总传热面积增大,同时明显降低算法的计算效率.基于此,建立垂直非结构模型.与节点非结构模型相比,垂直非结构模型降低了优化过程中的计算复杂度,并且能够消除交叉结构带来的不利影响,有效提升了优化的效率及求解精度.应用两个算例对基于垂直非结构模型的强制进化随机游走算法(RWCE)进行优化性能分析,取得了优于文献的结果.As node-wise non-structural superstructure model is applied to heat exchanger network optimization,heat exchanger crossover may appear.It is found that crossover structure causes an increase of total heat transfer area for heat exchange unit with same heat loads.At the same time,it reduces obviously computational efficiency of the algorithm.A vertical node-wise non-structural superstructure model is established.Compared with node-wise non-structural superstructure,the vertical node-wise non-structural superstructure model reduces computational complexity in the optimization process and eliminates adverse effects of crossover structure,which improves efficiency and accuracy of optimization.Finally,optimization performance of RWCE algorithm based on vertical non-structural superstructure model is analyzed in two examples.The results are superior to those in literature.

关 键 词：节点非结构模型 交叉结构 换热网络优化 垂直非结构模型 

分 类 号：TK124[动力工程及工程热物理—工程热物理]