Synthesis of Flexible Heat Exchanger Networks with Stream Splits Based on Rangers of Stream Supply Temperatures and Heat Capacity Flowrates

作     者：李志红 罗行 华贲 W.Roetzel LI Zhihong;Luo Xing;HUA Ben;W.Roetzel

作者机构：Institute of Chemical Engineering South China University of Technology Guangzhou 510641 China Institute of Thermodynamics University of the Federal Armed Forces Hamburg D-22039 Hamburg Germany Department of Thermal Engineering Tongji University Shanghai 200093 China Institute of Thermodynamics University of the Federal Armed Forces Hamburg D-22039 Hamburg Germany 

基　　金：Supported by the State Major Basic Research Department Program of China (No. G20000263) and the Deutsche Forschungs- gemeinschaft(DFG)(No. RO294/9) 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2004年第12卷第2期

页      码：240-246页

摘      要：A new superstructure model of heat exchanger networks (HEN) with stream splits based on rangers of streams supply temperatures and heat capacity flow rates is presented. The simultaneous optimal mathematical model of flexible HEN synthesis is established too. Firstly, the streams with rangers of supply temperatures and/or the streams with the rangers of heat capacity flow rates are pretreated; Secondly, several rules are proposed to establish the superstructure model of HEN with splits and the simultaneous optimal mathematical model of flexible HEN; Thirdly, the improving genetic algorithm is applied to solve the mathematical model established at the second step effectively, and the original optimal structure of HEN based on the maximum operation limiting condition can be obtained easily; Finally, the rules of heat exchange unit merged and the heat load of heat exchanger relaxed are presented, the flexible configuration of HEN satisfied the operation condition between the upper and down bounds of supply temperature and heat capacity flow rates can be obtained based on the original optimal structure of HEN by means of these rules. A case study demonstrates the method presented in this paper is

主 题 词：热交换器 温度 流量 网络分析技术 化学过程 

学科分类：080706[080706] 0817[工学-轻工类] 08[工学] 0807[工学-电子信息类] 

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