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ASTM Selected Technical Papers
Nanofluids
By
K. Narayan Prabhu
K. Narayan Prabhu
JAI Guest Editor
1
National Institute of Technology Karnataka
, Surathkal, Mangalore,
IN
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ISBN:
978-0-8031-7555-6
No. of Pages:
196
Publisher:
ASTM International
Publication date:
2012
eBook Chapter
Thermal Conductivity and Rheological Behaviour of Al-alloy Dispersed Ethylene Glycol Based Nanofluids
By
Gayatri Paul
,
Gayatri Paul
1
Dept. of Mechanical Engineering, Indian Institute of Technology
, Kharagpur, West Bengal, 721302,
IN
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John Philip
,
John Philip
2
Metallurgy & Materials Group, Indira Gandhi Centre for Atomic Research
, Kalpakkam, Tamilnadu, 603102,
IN
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Baldev Raj
,
Baldev Raj
2
Metallurgy & Materials Group, Indira Gandhi Centre for Atomic Research
, Kalpakkam, Tamilnadu, 603102,
IN
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Prasanta Kumar Das
,
Prasanta Kumar Das
1
Dept. of Mechanical Engineering, Indian Institute of Technology
, Kharagpur, West Bengal, 721302,
IN
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Indranil Manna
Indranil Manna
3
Dept. of Metallurgical and Materials Engineering, Indian Institute of Technology
, Kharagpur, West Bengal, 721302,
IN
4
CSIR-Central Glass Ceramic Research Institute
, Kolkata, West Bengal, 700032,
IN
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Page Count:
18
-
Published:2012
Citation
Paul, G, Philip, J, Raj, B, Das, PK, & Manna, I. "Thermal Conductivity and Rheological Behaviour of Al-alloy Dispersed Ethylene Glycol Based Nanofluids." Nanofluids. Ed. Prabhu, KN. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 2012.
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Al-alloy (Al-5 wt. %Zn and Al-5 wt. %Si) nanoparticle dispersed (0.01–2.00 vol. %) ethylene glycol based nanofluids are prepared by a two-step process. Prior to dispersing in ethylene glycol by magnetic stirring and ultrasonication the Al-alloy nanoparticles synthesized by mechanical alloying are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area diffraction (SAD), and energy dispersive spectroscopy (EDS) to analyze the identity, size, shape, and purity of the powder. A maximum thermal conductivity enhancement of 16 % for Al-5 wt. %Zn and 13 % for Al-5 wt. %Si dispersed nanofluids are observed at 0.1 vol. % of nanoparticle concentrations. Rheological studies of nanofluids show interesting findings as the viscosity of both types of nanofluids are observed to exhibit values lower than that of base fluid at lower concentrations and higher at higher concentrations. Maximum enhancement of viscosity up to 180 % for Al-5 wt. %Si and 120 % for Al-5 wt. %Zn dispersed nanofluids are observed at 2.0 vol. % concentration.
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