Study on boiling promotion by minute unevenness

- Boiling accelerated effect by the superheat of the dimple texture -

Abstract

For heat transfer performance improvement at boiling zone, minute unevenness with the various shapes to the generating surface is proposed in pool boiling. Growth of an air bubble influences big by the minute difference in the shapes. So it's the current state to predict correct heat transfer characteristics by an experiment. The purposes of this study are the specification of the minute unevenness which reduces one nuclear boiling arrival and consideration of the mass production method. And this report was estimated experimentally about the periodicity of the minute unevenness and the influence the looseness exerts on heat transfer characteristics.