Consider 1000 ft³/min (dry basis) of air at 14.7 psia, 90 F, and 60% relative humidity passing over a cooling coil with a mean surface temperature of 40 F. A water spray on the coil ensures that the exiting air is saturated at the coil temperature. What is the required cooling capacity of the coil in tons? 1 ton of refrigeration = 12,000 Btu/hr.