Fan Curves - A Deep Dive

Video Description

Let’s build a fan curve! We’ll start by collecting data on a real fan, and then use the fan laws to extrapolate all the require data. Then we’ll use the curves to size up fans and motors, and along the way we’ll look into efficiencys, safety margins, density, and even system effect. We condensed a wealth of knowledge into 1 video that connects all the dots. To receive PDH certification for this video, please visit CaptiveAire.com/library and click Request Access under the Professional Development section. Fill out the form on the pop up that appears and click Send. CaptiveAire will then add you to a professional development portal where you can access a certificate to confirm your training. Watch Part 1 HERE https://youtu.be/vF72pOHc1zY AC Motors Video Referenced: https://youtu.be/RG3eljmqyq4 00:00 What are Fan Curves? 00:57 Part 1 - Making The Curve 01:53 Making a Master RPM Curve 07:48 K Factor / System Constant 10:13 Plotting RPM Lines 11:11 Horsepower 12:36 Brake Horsepower 13:11 Plotting Horsepower Lines 14:21 Part 2 - Using The Curves 18:52 Motor Basics 24:49 Motor Efficiency 29:53 Fan Energy Index (FEI) 34:31 Density Calculations 40:32 Part 3 - System Effect 41:30 Visualizing System Effect 46:29 Our Approach