Thermal conductivity studies of metal dispersed multiwalled carbon nanotubes in water and ethylene glycol based nanofluids
- Department of Physics, Alternative Energy and Nanotechnology Laboratory (AENL), Nano Functional Materials Technology Centre (NFMTC), Indian Institute of Technology Madras, Chennai 600036 (India)
High thermal conducting metal nanoparticles have been dispersed on the multiwalled carbon nanotubes (MWNTs) outer surface. Structural and morphological characterizations of metal dispersed MWNTs have been carried out using x-ray diffraction analysis, high resolution transmission electron microscopy, energy dispersive x-ray analysis, and Fourier transform infrared spectroscopy. Nanofluids have been synthesized using metal-MWNTs in de-ionized water (DI water) and ethylene glycol (EG) base fluids. It has been observed that nanofluids maintain the same sequence of thermal conductivity as that of metal nanoparticles Ag-MWNTs>Au-MWNTs>Pd-MWNTs. A maximum enhancement of 37.3% and 11.3% in thermal conductivity has been obtained in Ag-MWNTs nanofluid with DI water and EG as base fluids, respectively, at a volume fraction of 0.03%. Temperature dependence study also shows enhancement of thermal conductivity with temperature.
- OSTI ID:
- 21361891
- Journal Information:
- Journal of Applied Physics, Vol. 106, Issue 8; Other Information: DOI: 10.1063/1.3240307; (c) 2009 American Institute of Physics; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON
CHEMICAL ANALYSIS
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
GLYCOLS
GOLD
INFRARED SPECTRA
NANOTUBES
PALLADIUM
PARTICLES
SILVER
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY
TRANSMISSION ELECTRON MICROSCOPY
WATER
X RADIATION
X-RAY DIFFRACTION
ALCOHOLS
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INTEGRAL TRANSFORMATIONS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
METALS
MICROSCOPY
NANOSTRUCTURES
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM METALS
RADIATIONS
SCATTERING
SPECTRA
SPECTROMETERS
THERMODYNAMIC PROPERTIES
TRANSFORMATIONS
TRANSITION ELEMENTS