In the present work, a multi-objective optimization of heat exchanger thermal design in the framework of the entropy generation minimization is presented. The objectives are to minimize the dimensionless entropy generation rates related to the heat conduction under finite temperature difference and fluid friction under finite pressure drop. Constraints are specified by the admissible pressure drop and design standards. The genetic algorithm is employed to search the Pareto optimal set of the multi-objective optimization problem. It is found that the solutions in the Pareto optimal set are trade-off between the pumping power and heat exchanger effectiveness. In some sense, the optimal solution in the Pareto optimal set achieves the largest exchanger effectiveness by consuming the least pumping power under the design requirements and standards. In comparison with the single-objective optimization design, the multi-objective optimization design leads to the significant decrease in the pumping power for achieving the same heat exchanger effectiveness and presents more flexibility in the design process.
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Multi-Objective Optimization of Heat Exchanger Design by Entropy Generation Minimization
Jiangfeng Guo,
Jiangfeng Guo
Institute of Thermal Science and Technology,
Shandong University
, Jinan 250061, P. R. China
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Lin Cheng,
Lin Cheng
Institute of Thermal Science and Technology,
Shandong University
, Jinan 250061, P. R. China
Search for other works by this author on:
Mingtian Xu
Mingtian Xu
Institute of Thermal Science and Technology,
mingtian@sdu.edu.cn
Shandong University
, Jinan 250061, P. R. China
Search for other works by this author on:
Jiangfeng Guo
Institute of Thermal Science and Technology,
Shandong University
, Jinan 250061, P. R. China
Lin Cheng
Institute of Thermal Science and Technology,
Shandong University
, Jinan 250061, P. R. China
Mingtian Xu
Institute of Thermal Science and Technology,
Shandong University
, Jinan 250061, P. R. Chinamingtian@sdu.edu.cn
J. Heat Transfer. Aug 2010, 132(8): 081801 (8 pages)
Published Online: June 2, 2010
Article history
Received:
November 6, 2009
Revised:
February 2, 2010
Online:
June 2, 2010
Published:
June 2, 2010
Citation
Guo, J., Cheng, L., and Xu, M. (June 2, 2010). "Multi-Objective Optimization of Heat Exchanger Design by Entropy Generation Minimization." ASME. J. Heat Transfer. August 2010; 132(8): 081801. https://doi.org/10.1115/1.4001317
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