Belt & Pulley Calculator vs Fan Law Calculator Kullanım & İstatistikleri

Helpful in setting up a connecting belt and two pulley system. With just a few inputs (pulley diameters, driver rpm, power, centers distance, belt size), the App shows how they effect belt velocity, tension, torques, wrap angle, and the RPM of the driven pulley. Inputs can be in imperial or metric units of measure. Results can be shared by text or email.

Apple App Store
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Fan Law Calculator

The Fan Law Calculator App has been designed to allow quick estimation of the performance impact of variation in airflow and/or rpm on an existing system. The standard fan law equations are used to estimate the system performance changes. Input the current values for airflow, rpm, pressure and current (or power) into the appropriate text field. 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