The thermal conductivity of water- and ethylene glycol-based nanofluids containing alumina, zinc-oxide, and titanium-dioxide nanoparticles is measured using the transient hot-wire method. Measurements are performed by varying the particle size and volume fraction, providing a set of consistent experimental data over a wide range of colloidal conditions. Emphasis is placed on the effect of the suspended particle size on the effective thermal conductivity. Also, the effect of laser-pulse irradiation, i.e., the particle size change by laser ablation, is examined for nanofluids. The results show that the thermal-conductivity enhancement ratio relative to the base fluid increases linearly with decreasing the particle size but no existing empirical or theoretical correlation can explain the behavior. It is also demonstrated that high-power laser irradiation can lead to substantial enhancement in the effective thermal conductivity although only a small fraction of the particles are fragmented.
Skip Nav Destination
Article navigation
Research Papers
Thermal Conductivity of Metal-Oxide Nanofluids: Particle Size Dependence and Effect of Laser Irradiation
Sang Hyun Kim,
Sang Hyun Kim
Department of Mechanical Engineering,
POSTECH
, Pohang, 790-784 Korea
Search for other works by this author on:
Sun Rock Choi,
Sun Rock Choi
Department of Mechanical Engineering,
POSTECH
, Pohang, 790-784 Korea
Search for other works by this author on:
Dongsik Kim
Dongsik Kim
Search for other works by this author on:
Sang Hyun Kim
Department of Mechanical Engineering,
POSTECH
, Pohang, 790-784 Korea
Sun Rock Choi
Department of Mechanical Engineering,
POSTECH
, Pohang, 790-784 Korea
Dongsik Kim
J. Heat Transfer. Mar 2007, 129(3): 298-307 (10 pages)
Published Online: May 25, 2006
Article history
Received:
October 10, 2005
Revised:
May 25, 2006
Citation
Kim, S. H., Choi, S. R., and Kim, D. (May 25, 2006). "Thermal Conductivity of Metal-Oxide Nanofluids: Particle Size Dependence and Effect of Laser Irradiation." ASME. J. Heat Transfer. March 2007; 129(3): 298–307. https://doi.org/10.1115/1.2427071
Download citation file:
Get Email Alerts
Cited By
Estimation of thermal emission from mixture of CO2 and H2O gases and fly-ash particles
J. Heat Mass Transfer
Non-Classical Heat Transfer and Recent Progress
J. Heat Mass Transfer
Related Articles
Experimental Study of Heat Conduction in Aqueous Suspensions of Aluminum Oxide Nanoparticles
J. Heat Transfer (September,2008)
Effect of Brownian Motion on Thermal Conductivity of Nanofluids
J. Heat Transfer (April,2008)
Thermal Conductivity Equations Based on Brownian Motion in Suspensions of Nanoparticles (Nanofluids)
J. Heat Transfer (April,2008)
Nanofluid Properties and Their Effects on Convective Heat Transfer in an Electronics Cooling Application
J. Thermal Sci. Eng. Appl (September,2009)
Related Proceedings Papers
Related Chapters
Characterization and evaluation
Biocompatible Nanomaterials for Targeted and Controlled Delivery of Biomacromolecules
An Approach for Optimizing Thermal Conductivity in Nanofluids
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Nuclear Fuel Materials and Basic Properties
Fundamentals of Nuclear Fuel