کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
172632 458553 2013 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-step approach for heat exchanger network retrofitting using integrated differential evolution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
One-step approach for heat exchanger network retrofitting using integrated differential evolution
چکیده انگلیسی

Heat exchanger network (HEN) retrofitting is more important and challenging than HEN synthesis since it involves modifying existing network for improved energy efficiency. Additional factors to be considered include spatial constraints, relocation and re-piping costs, reassignment and effective use of existing heat exchanger areas. The previous studies using stochastic global optimization algorithms are mainly focused on two-level approach: the first level uses a stochastic algorithm for optimizing structure, and the second level uses either a stochastic or a deterministic algorithm for optimizing continuous variables. In this study, we propose and test one-step approach where a stochastic global optimization method, namely, integrated differential evolution (IDE), handles both discrete and continuous variables together. Thus, HEN structure and retrofitting model parameters are simultaneously optimized by IDE, which avoids the algorithm trapping at a local optimum and also improves the computational efficiency. Results on HEN applications show that the proposed approach gives better solutions.


► One-step approach for heat exchanger network retrofitting problems is developed.
► The approach handles both discrete and continuous variables simultaneously.
► The approach employs integrated differential evolution for optimization.
► It is tested for retrofitting several heat exchanger networks.
► Proposed method outperforms recent methods for heat exchanger network retrofitting.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Chemical Engineering - Volume 50, 5 March 2013, Pages 92–104
نویسندگان
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