Fans and blowers provide an efficient and cost-effective means for generating continuous or intermittent airflow, and they’re used for everything from cooling, ventilation, and aeration to drying and conveying materials. But to specify the right type and size unit, engineers need to know about blower application basics.

This white paper explains how to use flow-pressure curves for sizing a blower, how speed changes affect power consumption and performance, and how to use Fan Laws to account for changes in air density. It also discusses environmental and operating factors that affect blower life, and addresses safety concerns of interest to any engineer.