Abstract
This study experimentally investigated the heat transfer characteristics of oscillating heat pipe (OHP). The OHP was made of copper flat plate, and its flow pattern can be visualization. This OHP had 20 parallel channels. In this study the working fluid was ethanol. The installed condition of the experimental apparatus were performed at horizontal and vertical. As a result, the oscillation frequency of the liquid column increased with the heat input increase, and the effective thermal conductivity is increased. The liquid supply to the heating area a vertical condition was sufficient by gravity. Therefore the maximum effective thermal conductivity of the vertical condition and the horizontal condition was about 15 times and 12.5 times that of copper.
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