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Providing a model for Csf according to pool boiling convection heat transfer of water/ferrous oxide nanofluid using sensitivity analysis

Mohammad Reza Salimpour (Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran)
Mohammad Hossein Karimi Darvanjooghi (Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran)
Ali Abdollahi (Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran)
Arash Karimipour (Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran)
Marjan Goodarzi (Sustainable Management of Natural Resources and Environment Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 13 June 2019

Issue publication date: 22 May 2020

215

Abstract

Purpose

A boiling surface with different initial roughness and under various nanoparticles volume fractions was studied in present work.

Design/methodology/approach

Develop a correlation and sensitivity analysis.

Findings

The results showed that for small (7.3 nm) and much larger (about 2,000 nm) surface roughness, compared to nanoparticle size of around 25 nm, the heat transfer rate of nanofluid diminishes relative to that of base fluid. The results also demonstrated that the boiling heat transfer rate is reduced by increasing the concentration of nanoparticles. For larger boiling surface roughness (480 nm) and nanoparticles volume fractions of less than 0.1 Vol.%, the value of heat transfer increases with the increase of nanoparticles concentration; and for those of more than 0.1 Vol.%, heat transfer rate decreases by adding more nanoparticles, significantly.

Originality/value

Finally, an equation was presented for estimating the wall superheat and the Csf coefficient in terms of mentioned parameters.

Keywords

Citation

Salimpour, M.R., Karimi Darvanjooghi, M.H., Abdollahi, A., Karimipour, A. and Goodarzi, M. (2020), "Providing a model for Csf according to pool boiling convection heat transfer of water/ferrous oxide nanofluid using sensitivity analysis", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 6, pp. 2867-2881. https://doi.org/10.1108/HFF-01-2019-0009

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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