Copper Coated Carbon Nanotube Wick Wetted with Ultrahigh Temperature Ceramic Nanofluid and Silver Nanofluid in Heat Pipes with Enhanced Stability

Abstract:

. High thermal conductivity of copper and carbon nano tubes are used in variety of thermal management applications to improve cooling performance. Deposition of copper over these nanotubes increases the hydrophilic wicking surface and increased conductivity and stiffness. The CNT coating and micro patterning are able to provide significant performance enhancements by reducing the surface superheat up to 72% . Conductivity can be increased further by wetting the wicks with conductive fluids. The nanofluids are of great use in this area. Ceramic nanofluid has a very good stability and silver nanofluid has a very good thermal conductivity and hence their mixture is of great use in high temperature applications. Adding of ceramics also ensure the stability of nanofluid suspensions and prevent coagulation. This paper suggests wetting the wicks with ceramic and silver nano fluid mixture in the ratio of 1:5 to increase conductivity and stability for high temperature applications further.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 906-911
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.906
• Online since: July 2014
• Authors: C. Smilin John Thas*, S. Mukesh Ram Gautham
• Keywords: Carbon Nanotube (CN), Ceramic Nanofluid, Hydrophilic Wicking, Silver Nanofluid, Sintering

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