A study on the heat transfer characteristics of a self-oscillating heat pipe |
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| Authors: | Seok Hun Yoon Cheol Oh Jae Hyuk Choi |
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| Affiliation: | (1) Heat-Pipe and Thermal Tools Design Research Laboratory (HTDR), Division of Mechanical Engineering, Faculty of Engineering, Mahasarakham University, Mahasarakham, Thailand;(2) Faculty of Industrial Technology and Management, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand; |
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| Abstract: | In this paper, the heat transfer characteristics of a self-oscillating heat pipe are experimentally investigated for the effect of various working fluid fill charge ratios and heat loads. The characteristics of temperature oscillations of the working fluid are also analysed based on chaotic dynamics. The heat pipe is composed of a heating section, a cooling section and an adiabatic section, and has a 0.002m internal diameter, a 0.34m length in each turn and consists of 19 turns. The heating and the cooling portion of each turn has a length of 70mm. A series of experiments was carried out to measure the temperature distributions and the pressure variations of the heat pipe. Furthermore, heat transfer performance, effective thermal conductivity, boiling heat transfer and condensation heat transfer coefficients are calculated for various operating conditions. Experimental results show the efficacy of this type of heat pipe. |
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