Abstract
This report presents results of an experimental investigation on the heat transfer characteristics of a Flat-plate thermosyphon. In this study, it is intended to achieve further performance advance of the thermosyphon, several tests were performed to assess the effects of the filling ratios and the inner structure at a vertical orientation. As the result, it was found that inner structure was effective for increase of heat transfer characteristics of the evaporation section. It was also shown that the heat transfer characteristics decreased when the accumulated of the working fluid in condensation section.
