Journal
PHYSICS LETTERS A
Volume 373, Issue 21, Pages 1861-1864Publisher
ELSEVIER
DOI: 10.1016/j.physleta.2009.03.037
Keywords
Nanofluid; Carbon nanotube; Thermal conductivity
Categories
Funding
- National Science Foundation of China [50876058]
- Shanghai Educational Development Foundation
- Shanghai Municipal Education Commission [07SG56]
- Innovation Program of Shanghai Municipal Education Commission [08ZZ99]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning.
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Homogeneous and stable nanofluids have been produced by suspending well dispersible multi-walled carbon nanotubes (CNTs) into ethylene glycol base fluid. CNT nanofluids have enhanced thermal conductivity and the enhancement ratios increase with the nanotube loading and the temperature. Thermal conductivity enhancement was adjusted by ball milling and cutting the treated CNTs suspended in the nanofluids to relatively straight CNTs with an appropriate length distribution. Our findings indicate that the straightness ratio, aspect ratio, and aggregation have collective influence on the thermal conductivity of CNT nanofluids. (C) 2009 Elsevier B.V. All rights reserved.
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