Improving the thermo-hydraulic performance of shell-and-tube heat exchangers is of interest to researchers due to their broad applications in the industry. Thermo-hydraulic behavior and entropy generation of hybrid nanofluid in a shell-and-tube heat exchanger with two different types of cross-sectional baffles are numerically examined using the two-phase Eulerian-Eulerian Model (EEM). The volume fraction of nanoparticles (phi) changes from 0 to 2% and the Reynolds number (ReNumber) varies from 25000 to 45000. EEM, Realizable k-epsilon turbulence model, finite volume method (FVM), and SIMPLE algorithm are used for modeling. According to the numerical results obtained in terms of pressure drop, total entropy generation, and performance evaluation criteria (PEC), baffle 1 is more appropriate. In terms of heat transfer rate and average Nusselt number values, baffle 2 is more suitable. The PEC maximum change was 5.13% at Re = 45000 and phi = 0% by changing the type of baffle from the second type to the first type. The maximum rise in the total entropy generation was 73.68% for phi = 0% for the first type of baffles.

Performance evaluation criteria and entropy generation of hybrid nanofluid in a shell-and-tube heat exchanger with two different types of cross-sectional baffles / Tavakoli, M.; Soufivand, M. R.. - In: ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS. - ISSN 0955-7997. - 150:(2023), pp. 272-284. [10.1016/j.enganabound.2023.01.024]

Performance evaluation criteria and entropy generation of hybrid nanofluid in a shell-and-tube heat exchanger with two different types of cross-sectional baffles

Soufivand M. R.
Secondo
Membro del Collaboration Group
2023

Abstract

Improving the thermo-hydraulic performance of shell-and-tube heat exchangers is of interest to researchers due to their broad applications in the industry. Thermo-hydraulic behavior and entropy generation of hybrid nanofluid in a shell-and-tube heat exchanger with two different types of cross-sectional baffles are numerically examined using the two-phase Eulerian-Eulerian Model (EEM). The volume fraction of nanoparticles (phi) changes from 0 to 2% and the Reynolds number (ReNumber) varies from 25000 to 45000. EEM, Realizable k-epsilon turbulence model, finite volume method (FVM), and SIMPLE algorithm are used for modeling. According to the numerical results obtained in terms of pressure drop, total entropy generation, and performance evaluation criteria (PEC), baffle 1 is more appropriate. In terms of heat transfer rate and average Nusselt number values, baffle 2 is more suitable. The PEC maximum change was 5.13% at Re = 45000 and phi = 0% by changing the type of baffle from the second type to the first type. The maximum rise in the total entropy generation was 73.68% for phi = 0% for the first type of baffles.
2023
two-phase EEM; entropy generation; hybrid nanofluid; cross-sectional baffle; k-ε turbulence model
01 Pubblicazione su rivista::01a Articolo in rivista
Performance evaluation criteria and entropy generation of hybrid nanofluid in a shell-and-tube heat exchanger with two different types of cross-sectional baffles / Tavakoli, M.; Soufivand, M. R.. - In: ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS. - ISSN 0955-7997. - 150:(2023), pp. 272-284. [10.1016/j.enganabound.2023.01.024]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1683032
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