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        Experimental investigation on transient characteristics of a dual compensation chamber loop heat pipe subjected to acceleration forces

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        Author
        Xie, Yongqi
        Zhou, Yang
        Wen, Dongsheng
        Wu, Hongwei
        Haritos, George
        Zhang, Hongxing
        Attention
        2299/19866
        Abstract
        In this article, an experimental study has been conducted to provide better understanding of the transient characteristics of a dual compensation chamber loop heat pipe (DCCLHP) subjected to the acceleration force. A new acceleration test rig was set up to provide the acceleration up to 11 g with three different directions. The heat load on the evaporator ranging from 25 W to 300 W was applied with the acceleration force simultaneously. Experimental results indicated that the DCCLHP could start up at a small heat load of 25 W and the startup behavior was different under acceleration direction conditions because of the vapor-liquid distribution change in the evaporator and compensation chambers (CCs). Under the current operating conditions, the effect of acceleration force was significant to the operating performance at small heat loads whereas was weak at large heat loads. Experimental results also clearly showed that both acceleration magnitude and direction can alter the operating mode. What’s more, it was found that temperature oscillation, reverse flow and evaporation in the evaporator core phenomena occurred under acceleration conditions.
        Publication date
        2018-02-05
        Published in
        Applied Thermal Engineering
        Published version
        https://doi.org/10.1016/j.applthermaleng.2017.11.014
        Other links
        http://hdl.handle.net/2299/19866
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