A room is provided with 100% outside air that is kept at 70°F. The room has a specific humidity requirement. Use the following information to calculate the required lbs/hr of humidification.
2500 cfm of outside air, 0°F db, 5.5 gr/lb dry air.
Specific volume of air at 70°F is 13.69 cubic ft/lb. Room humidity is 70 gr/lb dry air; 7000 gr/lb water.