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Date of Publication:2016-01-01

Journal:工程热物理学报

Volume:37

Issue:12

Page Number:2680-2683

ISSN No.:0253-231X

Abstract:This paper attempted to investigate the effects of addition of ionic
   liquids on the startup and operation performance of a closed loop copper
   pulsating heat pipe (PHP, four turns). The pulsation characteristics of
   the liquid slug was also experimentally examined utilizing high-speed
   camera. The experimental results showed that when ionic liquid with high
   fractions, PHP would have a lower starting power and starting
   temperature which are in favor of not only the prompt startup of PHP but
   also effectively avoiding a "dry-out" problem. When the mass fraction of
   ionic liquid was 0.67%, the ionic liquid based PHP substantially had the
   same amplitude and the relative velocity as water-based PHP. When the
   addition of ionic liquid was respectively 19.1% and 44.4% (mass
   fraction), the pulsating liquid slug displayed a high frequency and
   small amplitude.

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