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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Ge Zhang,Di Chen,Yingying Hong.Mass-Spring-Damper Model with Steady State Parameters for Predicting the Movement of Liquid Column and Temperature Oscillation in Loop Heat Pipe[J].Journal of Harbin Institute Of Technology(New Series),2016,23(5):82-89.DOI:10.11916/j.issn.1005-9113.2016.05.012.
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Mass-Spring-Damper Model with Steady State Parameters for Predicting the Movement of Liquid Column and Temperature Oscillation in Loop Heat Pipe
Author NameAffiliation
Ge Zhang School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China 
Di Chen School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China 
Yingying Hong School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China 
Abstract:
In order to investigate the mechanism of the temperature oscillation in loop heat pipes, this paper investigated the movement of the phase interface as the changed input power by a mass-spring-damper model. The model was solved with MATLAB and was used to explain the high-frequency and low-amplitude temperature oscillation. Temperature variation with the input power from 20 W to 75 W was investigated based on a LHP prototype in a literature. The model agreed well with the experimental data in the literature. The simulation results suggested that the movement of the liquid column was caused by the fluctuation of pressure difference applied on the liquid column and the stiffness coefficients of the vapor springs increasing with the input power. According to parameter analyses, the temperature oscillation at the outlet of the condenser can be weakened by increasing the mass of the liquid column and keeping the temperature at the outlet of the condenser steady.
Key words:  loop heat pipe  temperature oscillation  displacement  mass-spring-damper model  steady state parameters
DOI:10.11916/j.issn.1005-9113.2016.05.012
Clc Number:TK124
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