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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

HEAT TRANSFER PERFORMANCE OF A CLOSED OSCILLATING HEAT PIPE

Get access (open in a dialog) DOI: 10.1615/IHTC13.p22.380
9 pages

Abstract

Closed Loop Oscillating Heat Pipe (CLOHP) has been proven solution for electronic cooling and waste heat recovery. However, the operating mechanism of CLOHP is not well understood and the present state of art cannot predict required design parameter for a given task. In present study, an experimental investigation as well as a simple numerical simulation was executed on a micro scale CLOHP. The tested pipe, consisting of 12 turns, was made of cupper and had an inner diameter of 0.5mm. It had a condenser, adiabatic and evaporator section of unequal length. The effect of cooling section length (Lc) was examined while the uniform heat flux was put into the heating section and fluid charge ratio was 50%, 60% and 70%, respectively. It is found that the CLOHP can operate at both bottom heat mode and top heat mode and it is feasible to make a micro scale CLOHP with a smaller inner diameter.