Q3 A packed countercurrent water-cooling tower using air to cool the water from 43.3 "C to 26.7 C. The air enters at 23.9 C has a wet bulb temperature of 21.1 C. Heat capacity of the liquid is assumed constant at 4.187 x 10J/kg.K. The value of Ha for the flow conditions is 0.50 m. The heat-transfer resistance in the liquid phase will be neglected; i.e. It is very large. Determine the tower height if two times the minimum air rate is used. Using the Table 10.5-1 enthalpies of saturated-air water vapor mixtures (oC base temperature) in Appendix for equilibrium line plot. (20 marks)