Investigation of evaporation and boiling of liquids

It is shown experimentally that a minimum in the evaporation curve of water drops, a 5% aqueous solution of ethanol, and a 5% aqueous solution of n-butanol, i.e., the maximal evaporation rate of these liquids, is observed at a critical thermal load under boiling. Based on this finding, a method to determine the temperature of onset of the boiling crisis is suggested. It is found that the evaporation stages of drops of a liquid correlate with boiling regimes for this liquid.