Heat Exchanger Network Optimization Using Differential Evolution with Stream Splitting

Abstract:

Reduction in energy consumption is an important task in process industry. The basic idea of heat exchanger network (HEN) is using cold streams to cool hot streams and hot streams to heat cold streams. Hence, synthesis and optimization of HEN is a main tool for improving heat recovery. This article introduces a new strategy for HEN optimization using differential evolution algorithm. The proposed method considers splitting stream at the pinch point, to minimize the total cost of the network. Primarily, the minimum approach temperature value is determined through super-targeting. Then, differential evolution is employed to specify the heat load of heat exchangers and splitting streams. The HEN structure obtained in this work has better economics and illustrates the better performance by this approach.

• Periodical: Applied Mechanics and Materials (Volume 625)
• Pages: 373-377
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.625.373
• Online since: September 2014
• Authors: Ngo Thi Phuong Thuy, Rajashekhar Pendyala*, Narahari Marneni
• Keywords: Differential Evolution, Heat Exchanger Network, Optimization, Splitting Stream

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