Abstract

The effects of liquid subcooling and surface condition on transition boiling heat transfer from a rotating surface were investigated in a series of experiments in which Freon 113 was boiled on a spinning sphere. In addition to the usual thermal measurements, the boiling behavior in the transition regime was studied by visual means. It was found that the shape of the system's boiling curve was very dependent on the parameters in question. Hydrodynamic instabilities created in the film boiling regime by the rotation of the sphere were carried on to the transition and nucleate boiling regimes of the boiling curve. Boiling curves exhibiting more than one peak flux were obtained.

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