GLOBAL OPTIMIZATION FOR FLEXIBLE HEAT EXCHANGER NETWORK SYNTHESIS WITH ISOTHERMAL MIXING ASSUMPTION.

BRACCIA, LAUTARO; BASUALDO, MARTA

Buenos Aires

Congreso; 24º Congreso Argentino de Control Automatico; 2014

In this work a new systematic methodology of global optimization to perform synthesis of a flexible heat exchanger network (HEN) with isothermal mixing assumption is presented. This new methodology is based on a previous work, named SynFlex, which uses a promising superstructure to obtain flexible HEN. The main objective of SynFlex is to optimize both,the total annual cost (TAC) involving the utility consumption and the investment simultaneously. By introducing a new global optimization procedure, which relies on turning as convex specific non convex terms SynFlex is enhanced. To illustrate how the model SynFlex without global optimization procedure can exclude optimal configurations and how a flexible synthesis affects the total annual cost, three examples are given in this work.