Critical Heat Flux in Saturated Forced Connective Boiling with an Impinging Jet : Coexistence of Pool and Forced Connective Boilings

Abstract

Critical heat flux (CHF) in a coexistence of saturated pool boiling with a liquid level below H=8 mm and forced convective boiling on an open heated disk being supplied with a saturated liquid through a small jet impinging at the center of the disk is studied experimentally employing Refrigerant 113 at atmospheric pressure. The characteristics of CHF in the coexisting boiling are categorized into three groups whose boundaries are dealt with depending on the liquid level and the jet velocity The experimental data of CHF for the liquid level of H=1 mm are predicted by the generalized correlation predicting the CHF for forced convective boiling with an impinging jet.