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http://dx.doi.org/10.5407/jksv.2019.17.1.010

A Study on temperature behavior of pulsating heat pipe with different diameter in evaporator  

Kim, Jihoon (Department of Mechanical Engineering, Sogang University)
Park, Chulwoo (Department of Mechanical Engineering, Sogang University)
Shah, Syed Abdullah (Department of Mechanical Engineering, Sogang University)
Kim, Daejoong (Department of Mechanical Engineering, Sogang University)
Publication Information
Journal of the Korean Society of Visualization / v.17, no.1, 2019 , pp. 10-18 More about this Journal
Abstract
In this study, the temperature behavior of Pulsating Heat Pipe (PHP) according to the diameter change were studied by limiting the diameter change to only the evaporator. To investigate operation of PHP in various heat input, heat input power was increased from 10 to 120 W. The results show operation can be divided into 3 regimes by temperature behavior. Thermal resistance was increased before start-up and decreased with increasing heat input. At 110 W heat input, thermal conductivity of 2 mm PHP was 8 .times higher compare to thermal conductivity of copper. Further, to investigate details of temperature behavior in higher heat input, FFT analysis was conducted. Based on the results, when the deviation of peak frequency in each section is lowest, the thermal resistance has lowest value.
Keywords
Diameter; Evaporator; Pulsating heat pipe; Temperature behavior; Thermal resistance;
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