Q.2 Outside air with flow rate of 30,000 cfm at 96 °F db and 78 °F wb is mixed with re circulated air from an office building at 76 °F

and o = 50% before sending to an air-conditioner. The air is supplied to the space at 58 °F as shown below. If the total cooling load of the space is 1,200, 000 Btu/hr with SHR of 0.7,Determine (a) the volume flow rate (cfm) and humidity ratio of the supply air and (b) Capacity of the air-conditioner qac in tons (c ) the amount of water vapor dehumidified in air-conditioner (A/C) in (lbm/min)