Water to be cooled in the force draft cooling tower at 1 atm from 40C to 29C. The flowrate of the water is 125kg/s. The volume flowrate of the air is 105.625m3/s. The percentage humidity of the air is 30% with value of humidity 0.015kg water vapour/ kg dry air. For the type of packing to be used, the value of kGa=2.21107kgmol/s3m3.Pa and hL=7250 W/m3.K. The ratio of the mass flowrate, L/G=1.0 and the linear velocity of the air at the tower inlet, based on the empty tower is not less than 2.5m/s. Design the humidification column. i) Using humidity chart, determine the dry and wet bulb temperature of the system. ii) Calculate the column diameter iii) Estimate the height, z of the column