Air with relative humidity of 50 percent at 20°C is compressed to 8 atm, cooled to 30°C to condense some of the water, and dried in a silica-gel dryer. What fraction of the water in the air is removed in the condenser? Calculate the equilibrium capacity of the silica gel if the adsorption is carried out at 30°C and if the average bed temperature rises to 50°C.