Enhanced thermal conductivity by the magnetic field in heat transfer nanofluids containing carbon nanotube

Hong, Haiping; Wright, Brian; Wensel, Jesse; Jin, Sung‐Ho; Ye, Xiang Rong; Roy, Walter

doi:10.1016/j.synthmet.2007.05.009

Cited by 101 publications

(31 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The yield results are also similar to that of polymer suspensions [38]. Unlike the heattransfer nanofluids containing SWNT and Fe 2 O 3 particles, which show significant enhancement of TC initially [12][13][14][15], it is clearly seen that the four curves are all straight within the experimental error, indicating that TC values are independent of time.…”

Section: Yield Stress Testsupporting

confidence: 70%

“…The results suggest that, given appreciable concentrations, CNT could be used exclusively as a thickening agent to create carbon nanotube grease, or CNT grease. It has been reported that incorporating magnetically sensitive metal oxide nanoparticles or magnetically sensitive metal-coated carbon nanotubes into heat-transfer nanofluids results in an enhancement of the thermal conductivities of the nanofluids [12][13][14][15]. This enhancement is due to the magnetic particles forming connected networks, which tend to get partially oriented in the direction of the magnetic field, resulting in more physical contacts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanocomposites of Polymers Made Conductive by Nanofillers

Hong

Thomas

Horton

et al. 2010

Nanostructured Conductive Polymers

Self Cite

View full text Add to dashboard Cite

Section: Yield Stress Testsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Nanocomposites of Polymers Made Conductive by Nanofillers

Hong

Thomas

Horton

et al. 2010

Nanostructured Conductive Polymers

Self Cite

View full text Add to dashboard Cite

“…They observed greater thermal conductivity enhancement when the magnetic field was applied, which suggests that the nanotubes aligned to form conductive paths within the fluid. Hong et al 58 and Wensel et al 59 observed similar behavior in dilute nanofluids containing both iron oxide and SWCNTs. However, the thermal conductivity decreased after some time in the magnetic field due to agglomeration and settling of particles.…”

Section: Effect Of Particle Arrangement In Suspensionmentioning

confidence: 74%

Heat transfer in nanoparticle suspensions: Modeling the thermal conductivity of nanofluids

et al. 2010

View full text Add to dashboard Cite

This work reviews experimental data and models for the thermal conductivity of nanoparticle suspensions and examines the effect of the properties of the two phases on the effective thermal conductivity of the heterogeneous system. A model is presented for the effective thermal conductivity of nanofluids that takes into account the temperature dependence of the thermal conductivities of the individual phases, as well as the size dependence of the thermal conductivity of the dispersed phase. We demonstrate that this model can be used to calculate the thermal conductivity of nanofluids over a wide range of particle sizes, particle volume fractions, and temperatures. The model can also be used to validate experimental thermal conductivity data for nanofluids containing semiconductor or insulator particles and confirm the size dependence of the thermal conductivity of nanoparticles. V V C 2010 American Institute of Chemical Engineers AIChE J, 56: [3243][3244][3245][3246][3247][3248][3249][3250][3251][3252][3253][3254][3255][3256] 2010

show abstract

“…They found *160 % enhancement in the convective heat transfer coefficient for the nanofluid containing 0.45 vol% MWCNT and the negligible enhancement in the friction factor at higher velocity and higher temperature for the nanofluids with 0.15 vol% MWCNT. Hong et al (2007) reported that the thermal conductivity of the heat transfer nanofluids could be enhanced by the external magnetic field. These nanofluids contain CNTs and magneticfield-sensitive nanoparticles of Fe 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Fluid flow and heat transfer of carbon nanotubes along a flat plate with Navier slip boundary

2013

View full text Add to dashboard Cite

Homogeneous flow model is used to study the flow and heat transfer of carbon nanotubes (CNTs) along a flat plate subjected to Navier slip and uniform heat flux boundary conditions. This is the first paper on the flow and heat transfer of CNTs along a flat plate. Two types of CNTs, namely, single-and multi-wall CNTs are used with water, kerosene or engine oil as base fluids. The empirical correlations are used for the thermophysical properties of CNTs in terms of the solid volume fraction of CNTs. For the effective thermal conductivity of CNTs, Xue (Phys B Condens Matter 368:302-307, 2005) model has been used and the results are compared with the existing theoretical models. The governing partial differential equations and boundary conditions are converted into a set of nonlinear ordinary differential equations using suitable similarity transformations. These equations are solved numerically using a very efficient finite difference method with shooting scheme. The effects of the governing parameters on the dimensionless velocity, temperature, skin friction, and Nusselt numbers are investigated and presented in graphical and tabular forms. The numerical results of skin friction and Nusselt numbers are compared with the available data for special cases and are found in good agreement.

show abstract

Enhanced thermal conductivity by the magnetic field in heat transfer nanofluids containing carbon nanotube

Cited by 101 publications

References 9 publications

Nanocomposites of Polymers Made Conductive by Nanofillers

Nanocomposites of Polymers Made Conductive by Nanofillers

Heat transfer in nanoparticle suspensions: Modeling the thermal conductivity of nanofluids

Fluid flow and heat transfer of carbon nanotubes along a flat plate with Navier slip boundary

Contact Info

Product

Resources

About