Consider a brick house that is maintained at 20°C and 60 perccnt relative humidity at a location where the atmospheric pressure is 85 kPa. The walls of the house are made of 20-cin-thick brick whose permeance is 23 × 10–12 kg/s-m2’Pa. Taking the vapor pressure at the outer side of the wallboard to be zero, determine the maximum amount of water vapor that will diffuse through a 3-m × 5-rn section of a wall during a 24 h period.
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