Synthesis of cost optimal and controllable heat exchanger networks
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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 is explored 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 can be obtained featuring minimum total annualized cost and controllability characteristics which may form the basis for a successful control scheme.