33. Film Boiling & DNB A-B WATER HEATING B-S SUBCOOLED NUCLEATE BOILING S-C NUCLEATE BOILING C-D ONSET OF FILM BOILING D-E UNSTABLE FILM BOILING E-F STABLE FILM BOILING A B C D E D’ F DNB OR CRITICAL HEAT FLUX S LOG ( TSURFACE - TWTR/STM) LOG (HEAT FLUX)