Photographic Study of Surface-Boiling Heat Transfer to Water With Forced Convection

Abstract

To investigate the effect of forced convection on the mechanism of heat transfer with surface boiling, a high-speed, high-resolution photographic study was made. The test section was a transparent channel of rectangular cross section 3/16 × 1/2 × 6 in., with an electrically heated metal strip 1/8 in. wide suspended lengthwise to divide the channel into two flow passages. To facilitate photography of boiling on the metal strip near burnout conditions, the burnout limits for this section were determined experimentally. An empirical equation was fitted to the points.