Towards convective heat transfer enhancement: surface modification, characterization and measurement techniques

T.J. Taha, D.B. Thakur, T.H. van der Meer

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Abstract

In this work, heat transfer surface modification and heat transfer measurement technique is developed. Heat transfer investigation was aimed to study the effect of carbon nano fibers (extremely high thermal conductive material) on the enhancement level in heat transfer. Synthesis of these carbon nano structures is achieved using thermal catalytic chemical vapor deposition process (TCCVD) on a 50 μm pure nickel (Ni270) wire. The micro wire samples covered with CNF layers were subjected to a uniform flow from a nozzle. Heat transfer measurement was achieved by a controlled heat dissipation through the micro wire to attain a constant temperature during the flow. This measurement technique is adopted from hot wire anemometry calibration method. Synthesis of carbon nano structures, heat transfer surface characterization and measurement technique are evaluated. Preliminary results indicate that an average enhancement in Nusselt Number of 17% is achieved.
Original languageEnglish
Article number012113
Number of pages9
JournalJournal of physics: Conference series
Volume395
Issue numberconference 1
DOIs
Publication statusPublished - 2012
Event6th European Thermal Sciences Conference, Eurotherm 2012 - Futuroscope, Poitiers, France
Duration: 4 Sep 20127 Sep 2012
Conference number: 6

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