The evaporation of drops of pure liquids at elevated temperatures: Rates of evaporation and wet‐bulb temperatures

The rates of evaporation and the wet‐bulb temperatures have been correlated for drops of pure liquids evaporating in streams of high‐temperature air. The four liquids studied were acetone, benzene, n‐hexane, and water. The drops were of a millimeter in diameter and were suspended in a free jet of dry, vapor‐free air that ranged in temperature from 27° to 340°C. Reynolds numbers ranged from 24 to 325. Corrections to the Nusselt number to account for the heat lost the outwardly diffusing vapor ranged up to about 35%.