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
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Creator |
Paul, Gayatri
Philip, John Raj, Baldev Das, Prasanta Kumar Manna, Indranil |
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Subject |
Microstructure and Characterization
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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.
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Publisher |
Elsevier
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Date |
2011-07
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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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 |
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Relation |
http://cgcri.csircentral.net/306/
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