A NOVEL GLOBAL OPTIMIZATION USING DOUBLE INTERPOLATION AND EXTRAPOLATION FOR HEAT EXCHANGER NETWORKS
As to the heat exchanger network optimization prob-lem (MINLP) features: non-convex, multi-extremum, double extrapolation interpolation is proposed and ap-plied to heat exchanger network optimization to get the best network structure in this paper. The comprehensive cost is considered as objective function, which is consist of cost of heat exchanger areas, fixed investment and util-ities of heat exchanger networks, heat exchanger areas as the optimization variables. Firstly, the objective function was minimized to get the current optimal network struc-tureⅠ, with local optimization method. Secondly, the structureⅠ was set as the initial structure of application of interpolation and extrapolation method to jump out of the minimum to get better structureⅡ under this stage, and then, with the structureⅡ as the initial point, it was minimized to get the another optimal network structure…, so the process of minimizing and crossing went on a one-way alternating sequence. Finally, the optimal solution could be found. A heat exchanger network for a system of three heat streams and two cold streams was tested for its correctness and rationality, and the result near global so-lution could be obtained. The results showed that the process of optimization with double interpolation and extrapolation can jump out of the local minimum points, find better heat exchanger network structure to make less comprehensive cost.
Global Optimization Heat Exchanger Networks Double Interpolation and Extrapolation
Weimin Tu Guomin Cui Xiangbai Hu
School of Energy and Power Engineering,University of Shanghai for Science and Technology,Yangpu District, Shanghai 200093, China
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
890-893
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）