Abstract
The purpose of the present study is to clarify the effect of centrifugal force on the performance characteristics of a revolving heat pipe whose axis is parallel to the axis of rotation. Various kinds of heat pipes up to 3 m in maximum length have been tested within the range of 20 g. The experiment indicates that maximum heat transport capability increases with the increase in the number of revolutions, and that the apparent internal heat transfer coefficient, on the contrary, decreases with it. It is found that the internal structure of the heat pipe remarkably affects the performance characteristics of revolving heat pipes. Therefore, adequate internal structure makes it possible to take advantage of increasing maximum heat transport capability by revolution without decrease of the apparent internal heat transfer coefficient. This study has been conducted as one of the primary tests for a rotary heat pipe heat exchanger which has been developed for heat recovery from exhaust gas. The outline and some advantageous features of this rotary heat pipe exchanger are also described.
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