SYNTHESIS OF COST-OPTIMAL AND CONTROLLABLE HEAT-EXCHANGER NETWORKS

A systematic framework is developed for the synthesis of cost optimal heat exchanger networks that satisfy a set of controllability criteria . Based on a hyperstructure network representation, dynamics are explo red via the introduction of an analytical model for dynamic gains and time delays in a heat exchanger network. Input-output pairing criteria are explicitly included within a mixed integer nonlinear programming (MINLP) formulation for the synthesis of HEN. Network configurations c an be obtained featuring minimum total annualized cost controllability characteristics which may form the basis for a successful control sch eme.