| Abstract: | Forced convection boiling of subcooled water was performed in a horizontal rectangular channel with the heated surface on the bottom. The experiment was conducted for heating surfaces, 10, 20, or 40 mm in length. Microbubble emission boiling (MEB) was observed in subcooled transition boiling and was easy to generate for the shorter heating surfaces. In higher flow velocity of subcooled water, MEB was generated at even lower subcooling. Stormy MEB was observed at both the higher subcooling and the higher flow velocity of water. In the stormy MEB, the heat flux rose rapidly above the critical heat flux with larger acoustic noise and vibration. © 2001 Scripta Technica, Heat Trans Asian Res, 30(5): 426–438, 2001 |
