Numerical study of the enhancement of heat transfer for hybrid CuO-Cu nanofluids flowing in a circular pipe

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux on the wall was built to study the effect of the Reynolds number on convective heat transfer and pressure loss. The investigation was performed for hybrid nanofluids consisting of CuO-Cu nanoparticles and compared with CuO and Cu in which the nanoparticles have a spherical shape with size 50, 50, 50nm respectively. The nanofluids were prepared, following which the thermal conductivity and dynamic viscosity were measured for a range of temperatures (10 -60°C). The numerical results obtained were compared with the existing well-established correlation. The prediction of the Nusselt number for nanofluids agrees well with the Shah correlation. The comparison of heat transfer coefficients for CuO, Cu and CuO-Cu presented an increase in thermal conductivity of the nanofluid as the convective heat transfer coefficient increased. It was found that the pressure loss increases with an increase in the Reynolds number, nanoparticle density and particle volume fraction. However, the flow demonstrates enhancement in heat transfer which becomes greater with an increase in the Reynolds number for the nanofluid flow.

Original languageEnglish
Pages (from-to)533-539
Number of pages7
JournalJournal of Oleo Science
Volume62
Issue number7
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Reynolds number
Pipe
Nanoparticles
Heat transfer
Heat transfer coefficients
Thermal conductivity
Nusselt number
Laminar flow
Heat flux
Volume fraction
Viscosity
Computer simulation
Temperature

Keywords

  • Heat transfer coefficient
  • Heat transfer enhancement
  • Hybrid nanofluid
  • Nanofluid
  • Oxide nanoparticles
  • Pressure loss

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

@article{9a59b781fb6d48ceb840537f0f0c7c53,
title = "Numerical study of the enhancement of heat transfer for hybrid CuO-Cu nanofluids flowing in a circular pipe",
abstract = "A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux on the wall was built to study the effect of the Reynolds number on convective heat transfer and pressure loss. The investigation was performed for hybrid nanofluids consisting of CuO-Cu nanoparticles and compared with CuO and Cu in which the nanoparticles have a spherical shape with size 50, 50, 50nm respectively. The nanofluids were prepared, following which the thermal conductivity and dynamic viscosity were measured for a range of temperatures (10 -60°C). The numerical results obtained were compared with the existing well-established correlation. The prediction of the Nusselt number for nanofluids agrees well with the Shah correlation. The comparison of heat transfer coefficients for CuO, Cu and CuO-Cu presented an increase in thermal conductivity of the nanofluid as the convective heat transfer coefficient increased. It was found that the pressure loss increases with an increase in the Reynolds number, nanoparticle density and particle volume fraction. However, the flow demonstrates enhancement in heat transfer which becomes greater with an increase in the Reynolds number for the nanofluid flow.",
keywords = "Heat transfer coefficient, Heat transfer enhancement, Hybrid nanofluid, Nanofluid, Oxide nanoparticles, Pressure loss",
author = "Balla, {Hyder H.} and Shahrir Abdullah and {Wan Mahmood}, {Wan Mohd Faizal} and Rozli Zulkifli and Kamaruzzaman Sopian",
year = "2013",
doi = "10.5650/jos.62.533",
language = "English",
volume = "62",
pages = "533--539",
journal = "Journal of Oleo Science",
issn = "1345-8957",
publisher = "Japan Oil Chemists Society",
number = "7",

}

TY - JOUR

T1 - Numerical study of the enhancement of heat transfer for hybrid CuO-Cu nanofluids flowing in a circular pipe

AU - Balla, Hyder H.

AU - Abdullah, Shahrir

AU - Wan Mahmood, Wan Mohd Faizal

AU - Zulkifli, Rozli

AU - Sopian, Kamaruzzaman

PY - 2013

Y1 - 2013

N2 - A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux on the wall was built to study the effect of the Reynolds number on convective heat transfer and pressure loss. The investigation was performed for hybrid nanofluids consisting of CuO-Cu nanoparticles and compared with CuO and Cu in which the nanoparticles have a spherical shape with size 50, 50, 50nm respectively. The nanofluids were prepared, following which the thermal conductivity and dynamic viscosity were measured for a range of temperatures (10 -60°C). The numerical results obtained were compared with the existing well-established correlation. The prediction of the Nusselt number for nanofluids agrees well with the Shah correlation. The comparison of heat transfer coefficients for CuO, Cu and CuO-Cu presented an increase in thermal conductivity of the nanofluid as the convective heat transfer coefficient increased. It was found that the pressure loss increases with an increase in the Reynolds number, nanoparticle density and particle volume fraction. However, the flow demonstrates enhancement in heat transfer which becomes greater with an increase in the Reynolds number for the nanofluid flow.

AB - A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux on the wall was built to study the effect of the Reynolds number on convective heat transfer and pressure loss. The investigation was performed for hybrid nanofluids consisting of CuO-Cu nanoparticles and compared with CuO and Cu in which the nanoparticles have a spherical shape with size 50, 50, 50nm respectively. The nanofluids were prepared, following which the thermal conductivity and dynamic viscosity were measured for a range of temperatures (10 -60°C). The numerical results obtained were compared with the existing well-established correlation. The prediction of the Nusselt number for nanofluids agrees well with the Shah correlation. The comparison of heat transfer coefficients for CuO, Cu and CuO-Cu presented an increase in thermal conductivity of the nanofluid as the convective heat transfer coefficient increased. It was found that the pressure loss increases with an increase in the Reynolds number, nanoparticle density and particle volume fraction. However, the flow demonstrates enhancement in heat transfer which becomes greater with an increase in the Reynolds number for the nanofluid flow.

KW - Heat transfer coefficient

KW - Heat transfer enhancement

KW - Hybrid nanofluid

KW - Nanofluid

KW - Oxide nanoparticles

KW - Pressure loss

UR - http://www.scopus.com/inward/record.url?scp=84879734108&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879734108&partnerID=8YFLogxK

U2 - 10.5650/jos.62.533

DO - 10.5650/jos.62.533

M3 - Article

VL - 62

SP - 533

EP - 539

JO - Journal of Oleo Science

JF - Journal of Oleo Science

SN - 1345-8957

IS - 7

ER -