Air is delivered to a room at 58 F and the same amount of air is removed from the room at 76 F in order to provide sensible Cooling. The room requires 0.5 tons Of cooling to remain at a steady 76 F. What must the airflow rate be in cfm? Assume an air density of 13.5 cubic feet per pound mass and a cp = 0.24 Btu/(Ibm - F).