乾湿球湿度計公式の考察

抄録

A functional form of the psychrometric formula has been derived by a model of an infinitely broad flat evaporating surface.
The model of an infinitely long cylindrical evaporating surface introduced in this report has been found to be well adapted for deriving the functional form of the formula.
The conventional theory of the Sprung's psychrometric formula has been developed on the assumption that the air through the wet part of the psychrometer is completely cooled to the wet bulb temperature and completely saturated by water vapor.
The results of experiments with two psychrometers of the graft thermometer type show that the above mentioned assumption are not realized.