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Synthesis, characterization, and thermal property measurement of nano-Al(95)Zn(05) dispersed nanofluid prepared by a two-step process

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata

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Title Synthesis, characterization, and thermal property measurement of nano-Al(95)Zn(05) dispersed nanofluid prepared by a two-step process
 
Creator Paul, Gayatri
Philip, John
Raj, Baldev
Das, Prasanta Kumar
Manna, Indranil
 
Subject Microstructure and Characterization
 
Description Nanofluids are stable suspension of nanometer sized particles and exhibit extremely attractive thermal properties that make them a potential candidate for application in heat transfer devices ranging from microelectronic gadgets to thermal power plants. In the present study, we have synthesized Al-5wt%Zn nanoparticles by mechanical alloying, characterized these nanoparticles using X-ray diffraction and scanning and transmission electron microscopy. Subsequently, these nanoparticles are dispersed to the tune of 0.01-0.10 vol% in ethylene glycol (base fluid) following a careful mixing protocol. Thermal conductivity of the nanofluids and base fluid has been measured using the transient hot-wire method. It is observed that thermal conductivity of the nanofluids strongly depend on the concentration, particle size, fluid temperature and stability of dispersed nanoparticles in the base fluid. A maximum of 16% enhancement in thermal conductivity has been recorded at a nanoparticle loading of 0.10 vol%. Unlike data reported in some articles, thermal conductivity ratio of Al-5wt%Zn dispersed ethylene glycol based nanofluids is observed to decrease with the increase in crystallite/grain size of the particles. (C) 2011 Elsevier Ltd. All rights reserved.
 
Publisher Elsevier
 
Date 2011-07
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://cgcri.csircentral.net/306/1/IJHMT.pdf
Paul, Gayatri and Philip, John and Raj, Baldev and Das, Prasanta Kumar and Manna, Indranil (2011) Synthesis, characterization, and thermal property measurement of nano-Al(95)Zn(05) dispersed nanofluid prepared by a two-step process. International Journal of Heat and Mass Transfer, 54 (15-16). pp. 3783-3788. ISSN 0017-9310
 
Relation http://cgcri.csircentral.net/306/