
Sizing Considerations for Steam Humidifiers
Humidifier steam supply pressure. The formula for load calculation is: Humidifiion Load = CFM (R2-R1) 60 in lbs/hr 7,000 Where: CFM = air flow of unhumidified air at moisture condition R1 R2 = moisture content of required indoor condition air in gr/ ft3 R1 = When high humidity is needed in a room (70°F-60% RH) and moisture content of air to be humidified (from outdoor …