The calculations will automatically update as you type. The updated values can be input in one of two ways. The new values can be entered into the appropriate text field. Or, you can drag the airflow value left and right on the graph view to change the values. The calculations will automatically update as you edit the values. Calculations The standard fan law equations are applied: cfm2 = cfm1 * rpm2/rpm1 sp2 = sp1 * (cfm2/cfm1)^2 power2 = power1 * (cfm2/cfm1)^3 Notes: This application (App) is provided for use by qualified HVAC engineers and designers in the design of air handling systems and is not a substitute for appropriate design services. When in doubt, contact a design
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