Journal of Thermal Analysis and Calorimetry, ( ISI ), Volume (143), No (6), Year (2020-2) , Pages (4009-4024)

Title : ( Thermo-hydraulic analysis and optimization of CuO/water nanofluid inside helically dimpled heat exchangers )

Authors: Mahdi Deymi Dashtebayaz , Mahla Akhoundi , Amir Ebrahimi Moghadam , Ahmad Arabkoohsar , Ali Jabari Moghadam , Mahmood Farzaneh-Gord ,

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Abstract

The use of dimple technology and the use of nanofluids in different heat exchanging systems are known as powerful tools for improving heat transfer and fluid flow conditions. This work aims to prepare a comprehensive thermo-hydraulic parametric study and optimization of CuO/water nanofluid flow inside dimpled heat exchangers. The modeling procedure is based on the combination of the heat and mass transfer, fluid flow characteristics as well as the second law of thermodynamics. The parametric study is done for evaluating three thermo-hydraulic criteria (i.e., entropy generation number, Bejan number and irreversibility distribution ratio) with changing some of the most important fluid conditions (namely Reynolds number, average flow temperature and nanofluid concentration) as well as pitch ratio of the heat exchanger. Finally, the optimization is done through the combination of entropy generation minimization approach and genetic algorithm method. The results indicate that among the decision parameters, the average flow temperature and the pitch ratio have the lowest and highest effect on the entropy generation, respectively. From the optimization process, the optimum values of Reynolds number, dimensionless average flow temperature, nanofluid concentration and pitch ratio are 4610.428, 1.077, 0.000216 and 0.00326, respectively.

Keywords

Dimpled heat exchanger; CuO/water nanofluid; Entropy generation minimization; Genetic algorithm
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@article{paperid:1078699,
author = {مهدی دیمی دشت بیاض and مهلا آخوندی and امیر ابراهیمی مقدم and Ahmad Arabkoohsar and علی جباری مقدم and Farzaneh-Gord, Mahmood},
title = {Thermo-hydraulic analysis and optimization of CuO/water nanofluid inside helically dimpled heat exchangers},
journal = {Journal of Thermal Analysis and Calorimetry},
year = {2020},
volume = {143},
number = {6},
month = {February},
issn = {1388-6150},
pages = {4009--4024},
numpages = {15},
keywords = {Dimpled heat exchanger; CuO/water nanofluid; Entropy generation minimization; Genetic algorithm},
}

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%0 Journal Article
%T Thermo-hydraulic analysis and optimization of CuO/water nanofluid inside helically dimpled heat exchangers
%A مهدی دیمی دشت بیاض
%A مهلا آخوندی
%A امیر ابراهیمی مقدم
%A Ahmad Arabkoohsar
%A علی جباری مقدم
%A Farzaneh-Gord, Mahmood
%J Journal of Thermal Analysis and Calorimetry
%@ 1388-6150
%D 2020

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