In a device to produce potable water, humid air at 90F,29.7 in Hg, and 95% relative humidity is cooled to 40F at constant pressure. What volumetric flow rate of air into the cooler (ft3/min) is required to provide 10.0gal/min of condensed water? Use Raoult's law for equilibrium. Vapor pressure of water in Table B3 in Textbook. Density of water =62.43lbm/ft3. Relative Saturation or Relative Humidity: Sr or hr=pi(T)pi100%