Abstract
Pool boiling heat transfer experiments were performed for deionized water at 0.101 MPa to examine the elemental process of pool nucleate boiling. The heat transfer surface was made from a copper printed circuit board. Direct current was supplied to the heat transfer surface to heat it up. The Bakelite plate of the backside of the copper layer was taken off at the center portion of the heat transfer surface. The instantaneous variation of the backside temperature of the heat transfer surface was measured with an infrared radiation camera. Bubble behavior was recorded with a high speed video camera. The variations of the surface temperature and the surface heat flux with time were obtained two-dimensionally for the isolated boiling region. The bound of the area affected by the boiling bubble was approximately 1.8 mm from a cavity.
