An Explicit Solution for Thermal Calculation and Synthesis of Super-structure Heat Exchanger Networks  

作　　者：陈德珍 杨杉杉 罗行 温卿云 马虎根 

机构地区：[1]Institute of Thermal and Environmental Engineering, Tongji University [2]Institute of Thermal Engineering, University of Shanghai for Science and Technology

出　　处：《Chinese Journal of Chemical Engineering》2007年第2期296-301,共6页中国化学工程学报（英文版）

基　　金：Supported by Shanghai Leading Academic Discipline Project (No.T0503);Shanghai Pujiang Program (No.05PJ14078);Ji-angsu Cuilong Copper Industry Co.,Ltd.

摘　　要：For the optimal design of a heat exchanger network,the inlet and outlet stream temperatures of each heat exchanger in the network should be known.An explicit analytical solution of stream temperatures of an arbi-trary connected heat exchanger network was introduced,which is suitable for the thermal calculation of heat ex-changer networks.For the heat exchanger network synthesis,this solution was further developed and coupled with the stage-wise superstructure heat exchanger networks.The new calculation procedure reduced the computer mem-ory requirement dramatically.On the basis of this solution,a mathematical model for synthesis of heat exchanger networks with genetic algorithm was formulated,which is always feasible and no iteration is needed.Two examples were calculated with the proposed approach and better results were obtained.For the optimal design of a heat exchanger network, the inlet and outlet stream temperatures of each heat exchanger in the network should be known. An explicit analytical solution of stream temperatures of an arbitrary connected heat exchanger network was introduced, which is suitable for the thermal calculation of heat exchanger networks. For the heat exchanger network synthesis, this solution was further developed and coupled with the stage-wise superstructure heat exchanger networks. The new calculation procedure reduced the computer memory requirement dramatically. On the basis of this solution, a mathematical model for synthesis of heat exchanger networks with genetic algorithm was formulated, which is always feasible and no iteration is needed. Two examples were calculated with the proposed approach and better results were obtained.

关 键 词：heat recovery system stage-wise superstructure heat exchanger network synthesis genetic algorithm OPTIMIZATION 

分 类 号：TQ015.2[化学工程]