Condensation heat and mass transfer to a liquid drop moving in a mixture of saturated vapor and a noncondensable have been evaluated. The Reynolds number of the drop motion is 0(100). The quasi-steady, coupled, boundary layer equations for the flow field and the transport in the gaseous phase are simultaneously solved. The heat transport inside the drop is treated as a transient process. Results are presented for the heat and mass transport rates to the drop, the surface shear stress, the velocity profiles across the boundary layer, and the temperature-time history of the drop. The comparisons of results with experimental data, where available, show excellent agreement. Tables summarizing results appropriate to a wide range of condensation rates have been included. Local heat and mass transfer rates have also been presented. These features will make the paper useful to the designer of direct contact heat transfer equipment.

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