سال انتشار: ۱۳۸۶
محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: ۱۰
Ebrahim Rezaei – Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
Sirous Shafiei – Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
Synthesis of heat exchanger networks (HENs) is inherently a mixed integer and non linear programming (MINLP) problem. Solving such problems leads to difficulties in optimization of continuous and binary variables. This paper presents a new efficient and robust method in which structural parameters are optimized by G.A. and continuous variables are handled due to a modified objective function for maximum energy recovery. Node representation is used for addressing the exchangers and networks considered as a sequence of genes. Each gene consists of nodes for generating different structures within a network. Results show that this method may find new or near optimal solutions with less than 2% increase in HENs annual cost.