Evaporation from a Water Drop in the Stream of Steam-air Mixtures

Abstract

The evaporation from a single water drop in the stream of super-heated steam and various steam-air mixtures is investigated experimentally. The heat and mass transfer coefficients are calculated from the evaporation rates and the following experimental equations are obtained. Nu=2.0+0.65 Reρ¹/² Pγ¹/³ 9<Reρ<120 0<(ρBm/ρπ) <0.98 Sh(ρBm/ρπ)⁻⁰.²⁰=2.0+0.65 Reρ¹/² Sc¹/³ 0<Reρ<120 0.38<(ρBm/ρπ)<0.98