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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Experimental Investigation of Ultrasonic Effect on a Nanofluid Oscillating Heat Pipe

Get access (open in a dialog) DOI: 10.1615/IHTC15.hpp.009476
pages 3843-3850

Resumo

The ultrasonic effect on the oscillating motion and heat transfer in an oscillating heat pipe (OHP) containing nanofluid was investigated experimentally. The nanofluid consists of distilled water and dysprosium (III) oxide nanoparticles with an average size of 98 nm. The ultrasonic sound was applied to the evaporator of a nanofluid OHP by using the electrically-controlled piezoelectric ceramics. The ultrasonic sound is used to generate and maintain the oscillating motion whereby heat transfer is enhanced. The heat pipe was tested with and without the ultrasonic effect. In addition, the effects of orientation, operating temperature, and input power from 15 W to 250 W were investigated. The experimental results demonstrated that the application of ultrasound with a total power of 0.1 W on a nanofluid OHP can significantly reduce its thermal resistance and enhance its heat transfer performance. The investigation will provide a new way to enhance the heat transfer performance of the OHP.