Transient nucleate boiling on a horizontal heated cylinder in liquid D-mannitol

Various incipient boiling heat fluxes and transient heat transfer coefficients of nucleate boiling on a horizontal heated cylinder in liquid D-mannitol were measured. A platinum cylinder was used as a heater in the experiment. The diameter and effective length of the platinum cylinder were 1.0 and 25.9 mm, respectively. The cylinder was heated by a DC power supply until the nucleate boiling regime in liquid D-mannitol was reached. The temperature of the liquid D-mannitol ranged from 455 to 502 K. The e-folding time of the heat generation rate ranged from 0.35 to 19 s. The incipient boiling heat flux was dependent on the e-folding time of the heat generation rate, whereas the transient nucleate boiling heat transfer was not affected by the e-folding time of the heat generation rate. From the experimental data, the correlations of the incipient heat flux and the transient heat transfer coefficient were obtained.