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3. Two-phase thermosiphons
Two-phase thermosyphons are heat pipes in which the driving force for liquid return is not capillary action, but gravity. This is only possible when the condenser is above the evaporator.
When a thermosiphon includes a capillary structure, such as a groove, its only role is to improve local performance (exchange coefficient, homogenization of the condensate film, stabilization of the liquid-vapor interface, etc.). In fact, smooth-walled thermosiphons are widely used in the industrial sector to keep costs to a minimum.
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Two-phase thermosiphons
Operating limits
Bibliography
Events
International Heat Pipe Conference (IHPC). Frequency 2 to 3 years:
14th edition: Florianopolis, Brazil, April 22-27, 2007
15th edition: Clemson (SC), USA, April 25-30, 2010
16th edition: Lyon, France, spring 2012
17th edition: Kanpur, India, autumn 2014
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Advanced Cooling Technologies (ACT), USA http://www.1-act.com/fact.html
ATHERM, France http://www.atherm.com
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