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SYNTHESIS OF MULTIPERIOD HEAT EXCHANGER NETWORKS WITH A HYBRID META-HEURISTIC APPROACH: SIMULATED ANNEALING AND ROCKET FIREWORKS OPTIMIZATION

DOI: 10.1615/ICHMT.2017.CHT-7.1540
pages 1451-1465

Leandro Vitor Pavão
State University of Maringá, UEM, Maringá, Brazil

Camila de Brito Miranda
State University of Maringá, UEM, Maringá, Brazil

Caliane Bastos Borba Costa
State University of Maringá, UEM, Maringá, Brazil

Mauro Antonio da Silva Sá Ravagnani
State University of Maringá, UEM, Maringá, Brazil

Abstract

Optimal Heat Exchanger Network (HEN) designs can lead an industrial plant to significant reduction in operating and capital costs, as well as pollutant emissions and these optimal HENs can be designed with the aid of mathematical programming. An important aspect that can be taken into consideration in the design is the HEN ability of operating under different conditions, and the HEN that meet this feature is known as multiperiod. The synthesis of such HEN, however, requires the solution of a more complex problem. In optimal designs, not only single pieces of equipment must be able to operate under different temperature and flow rates, but also the HEN must perform such task with total annual costs (TAC) as low as possible. In this work, a meta-heuristic approach able to efficiently handle the multiperiod HEN synthesis problem is presented and applied to two case studies. The method could find solutions with better heat loads and stream fraction distributions among the heat exchangers, which led to efficient use of the available heat exchanging area in all periods. The HEN configurations achieved present lower TAC than the solutions reported in the literature, demonstrating the efficiency of the presented meta-heuristic strategy.

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