Oscillating heat pipes
Phase-change systems of thermal control - micro-heat pipes and pulsating heat pipes

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BE9547 V1 Article

Oscillating heat pipes


Phase-change systems of thermal control - micro-heat pipes and pulsating heat pipes

Authors : Jocelyn BONJOUR, Frédéric LEFÈVRE, Valérie SARTRE, Yves BERTIN, Cyril ROMESTANT, Vincent AYEL, Vincent PLATEL

Publication date: January 10, 2011, Review date: December 2, 2016 | Lire en français

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2. Oscillating heat pipes

2.1 Operating principles

An oscillating heat pipe is a passive two-phase transfer system consisting of several interconnected loops originating from a single smooth tube of capillary dimension (figure 16 ).

This tube is partially filled with a heat transfer fluid that naturally takes the form of a succession of vapor bubbles and liquid plugs. This phase separation is mainly the result of surface tension forces. When the oscillating heat pipe is heated at one end and cooled at the other, the resulting temperature differences generate both temporal and spatial pressure fluctuations, themselves associated with the generation...

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