Published 8 issues per year
ISSN Print: 1065-5131
ISSN Online: 1563-5074
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Experimental Investigation of Flat Miniature Heat Pipes with Three Kinds of Micro Grooves
ABSTRACT
The flat miniature heat pipes (FMHPs) with three kinds of micro grooves, including two kinds of deep rectangular grooves and one kind of zigzag groove, are fabricated employing the electric-discharging machining wire cutting method. In order to study systematically the influence of gravitation on the performance of the heat pipes, axial grooves are distributed on only one side of the interior perimeter of the FMHPs. The heat pipes with different charging ratios and working fluids are tested under different tilt angles, so as to study the influence of factors such as the gravitation, charging ratio, groove structure, etc., on the performance of the FMHPs. Experimental results concluded that the influence of the gravitation on the performance of the FMHPs is obvious in the axial direction, while in the radial direction the influence is obvious only if the charging ratio is larger. The optimal charging ratio of the FMHPs with deep grooves is 2.3, and the FMHPs with deep grooves have excellent heat transfer performance.
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Li Ping, Luo Yaoyuan, Zhang Di, Xie Yonghui, Flow and heat transfer characteristics and optimization study on the water-cooled microchannel heat sinks with dimple and pin-fin, International Journal of Heat and Mass Transfer, 119, 2018. Crossref
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Pan Zhiliang, Li Ping, Li Jinxing, Li Yanping, Effects of Endwall Fillet and Bulb on the Temperature Uniformity of Pin-Fined Microchannel, Entropy, 19, 11, 2017. Crossref