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Foster Kwame Kholi,Albert Mucci,Mimbo Shim(심민보),J. K. Min(민준기),M. Y Ha(하만영) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11
Heat pipes, HP, are phase change devices with high conductivities compared to existing technologies of the same dimensions. However, for HP with multi-layer wicks, the layers and location of the dense wicks significantly affect the thermo-fluidics of the device. The influence of these factors on the overall performance of HP is presented for a standard mesh-screen wick HP with different layers - uniform and non-uniform wick layers. An in-house code assisted in predicting the limit of HP, which show increased heat transfer limit as the number of layers increase, especially for a mixture of layers of uniform and non-uniform wicks. The heat transfer improves in different inclinations when the dense wicks located in the core of the HP, in contact with the vapour flow. This arrangement restricts the entrainment of liquid from the wick surface. The results have shown that the performance of HP can easily be improved through proper wick arrangement.