Transient boiling heat transfer from two different heat sources: Small diameter wire and thin film flat surface on a quartz substrate

Abstract

Transient boiling heat transfer data are reported for two different heater surface geometries submerged in liquid nitrogen. During the early part of the transient heat pulse, the heat transfer coefficient for both geometries generally agrees with values predicted from classical transient pure conduction equations. The agreement persists until the time for onset of convection which varies approximately as 1 q 2 where q is the heat flux to the fluid.