Problem Set 4 Solutions

Problem Set 4 Solutions Problem 1 specific humidity (humidity ratio): Ratio of mass of water vapor to mass of dry in a air/water vapor mixture. relative humidity: Ratio of the partial pressure of water vapor to the saturation pressure of water at the same temperature. adiabatic saturator: A device (assumed to be insulated) that draws air down a channel while adding water vapor to the air until it is saturated, so that by measuring the exit temperature (adiabatic saturation temperature) the humidity of the incoming air can be determined. dew point temperature: For a fixed composition of water vapor in air and fixed total pressure, the temperature at which the water vapor becomes saturated. wet bulb temperature: The temperature measured by a thermometer with an evaporating wet wick on the bulb, which provides a good estimate of the adiabatic saturation temperature. dry bulb temperature: The temperature as measured by a regular thermometer, giving the actual temperature of the mixtures.