Enhanced thermal conductivity of nanofluids: a state-of-the-art review

Date

2010-02-01

Author

Özerinç, Sezer
Yazicioglu, Almila Guevenc

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

132
views

0
downloads

Adding small particles into a fluid in cooling and heating processes is one of the methods to increase the rate of heat transfer by convection between the fluid and the surface. In the past decade, a new class Of fluids called nanofluids, in which particles of size 1-100 nm with high thermal conductivity are Suspended in a conventional heat transfer base fluid, have been developed. It has been shown that nanofluids containing a small amount of metallic or nonmetallic particles, Such as Al2O3, CuO, Cu, SiO2, TiO2, have increased thermal conductivity compared with the thermal conductivity of the base fluid. In this work, effective thermal conductivity models of nanofluids are reviewed and comparisons between experimental findings and theoretical predictions are made. The results show that there exist significant discrepancies among the experimental data available and between the experimental findings and the theoretical model predictions.

Subject Keywords

Nanofluids, Nanoparticles, Thermal conductivity, Thermal conductivity model, Heat transfer enhancement

URI

https://hdl.handle.net/11511/48314

Journal

MICROFLUIDICS AND NANOFLUIDICS

DOI

https://doi.org/10.1007/s10404-009-0524-4

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Numerical analysis of laminar forced convection with temperature-dependent thermal conductivity of nanofluids and thermal dispersion Özerinç, Sezer; Kakac, S. (2012-12-01) Nanofluids are promising heat transfer fluids due to their high thermal conductivity. In order to utilize nanofluids in practical applications, accurate prediction of forced convection heat transfer of nanofluids is necessary. In the first part of the present study, we consider the application of some classical correlations of forced convection heat transfer developed for the flow of pure fluids to the case of nanofluids by the use of nanofluid thermophysical properties. The results are compared with experi...
HEAT TRANSFER ENHANCEMENT IN LAMINAR CONVECTIVE HEAT TRANSFER WITH NANOFLUIDS Özerinç, Sezer; YAZICIOGLU, A. G. (2011-06-03) In order to utilize nanofluids in practical applications, accurate prediction of forced convection heat transfer of nanofluids is necessary. In the first part of the present study, we consider the application of some classical correlations of forced convection heat transfer developed for the flow of pure fluids to the case of nanofluids by the use of nanofluid thermophysical properties. The results are compared with experimental data available in the literature, and it is shown that this approach underestim...
Performance analysis of grooved heat pipes using 3-D multi-channel thermal resistance network Sezmen, Ramazan Aykut; Dursunkaya, Zafer; Çetin, Barbaros; Department of Mechanical Engineering (2021-9) Heat pipes are phase change heat transfer devices that transfer high amounts of heat with low temperature differences compared to conventional cooling techniques due to their high thermal conductivity. Since heat pipes do not require any external power supply and not involve any moving parts, they are preferred for high reliability applications and in wide range of industrial applications from thermal management of electronics to space applications. Essentially, heat pipes use the advantage of occurring pha...
Effect of Nanoconvection due to Brownian Motion on Thermal Conductivity of Nanofluids Azizian, M. Reza; AYBAR, HİKMET ŞELLİ; Okutucu Özyurt, Hanife Tuba (2009-08-22) A nanofluid is a new class of heat transfer fluids that contain a base fluid and nanoparticles. The use of additives is a technique applied to enhance the heat transfer performance of base fluids. The thermal conductivity of the ordinary heat transfer fluids is not adequate to meet today's cooling rate requirements. Nanofluids have been shown to increase the thermal conductivity and convective heat transfer performance of the base liquids. One of the possible mechanisms for anomalous increase in the thermal...
NUMERICAL ANALYSIS OF CONVECTIVE HEAT TRANSFER OF NANOFLUIDS FOR LAMINAR FLOW IN A CIRCULAR TUBE Kirez, Oguz; Güvenç Yazıcıoğlu, Almıla; KAKAÇ, SADIK (2012-11-15) In this study, a numerical analysis of heat transfer enhancement of Alumina/water nanofluid in a steady-state, single-phase, laminar flow in a circular duct is presented for the case of constant wall heat flux and constant wall temperature boundary conditions. The analysis is performed with a newly suggested model (Corcione) for effective thermal conductivity and viscosity, which show the effects of temperature and nanoparticle diameter. The results for Nusselt number and heat transfer enhancement are prese...

Citation Formats

S. Özerinç and A. G. Yazicioglu, “Enhanced thermal conductivity of nanofluids: a state-of-the-art review,” MICROFLUIDICS AND NANOFLUIDICS, pp. 145–170, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48314.