HYBRID GENETIC ALGORITHM TO THE SYNTHESIS OF OPTIMAL HEAT EXCHANGER NETWORKS

Abstract

In this paper a new systematic is proposed, interfacing Pinch Analysis and Genetic
Algorithms (GA). Initially the optimal ∆Tmin is found by using a genetic algorithm. In a
second step, with the optimal ∆Tmin, the pinch point is obtained, and the problem is divided
in two regions, below and above it. The optimal HEN is obtained for each side of the
pinch and the final HEN is achieved. An example from the literature was solved using the
proposed systematic. Results show the applicability of the proposed methodology, obtaining
a cost value lower than those presented in the literature.