Fan Law Calculator 1.2

The Fan Law Calculator App serves as a practical tool for professionals seeking to quickly estimate the performance impacts associated with variations in airflow and RPM within existing HVAC systems. Utilizing standard fan law equations, this app provides a methodical approach to assessing changes in system performance.

Users can input current operational values, including airflow, RPM, pressure, and power, into the designated fields. The interface facilitates real-time updates to calculations as data is entered.

Revisions to values can be executed in two distinct manners: users may either input new data directly into the relevant text fields or adjust the airflow parameter using a draggable interface on the graph view. As modifications are made, calculations promptly reflect these adjustments.

Calculations are based on established fan law equations:

• cfm2 = cfm1 * (rpm2/rpm1)
• sp2 = sp1 * (cfm2/cfm1)²
• power2 = power1 * (cfm2/cfm1)³

Please note: This application is intended for use by qualified HVAC engineers and designers during the design of air handling systems and is not a replacement for professional design services. Users are encouraged to seek expert advice if any uncertainties arise during the design process.