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Application Notes

Application Notes

Welcome to AMETEK Rotron’s Application Notes Library. We recognize that fans tend to be one of the few dynamic components in an electronics sub-system and therefore require a great degree of attention for a system design perspective. For this reason, we have compiled a set of application notes and articles which address specific conditions and considerations related to fans. The viewer is encouraged to use our library as a resource.
Basic Airflow
Describes different modes of heat transfer
Life & MTBF
Describes the operational life of fans and blowers and the mean time between failures
Power Options
Outlines the available motor drives to enable fan or blower operation
Cooling Flow Calculator
Formulas to approximate the amount of air flow required
Fan Laws
Shows the basic proportional relationships between fan speed, flow, pressure, and power
System Impedance
Outlines system impedance, shows how to calculate flow through a nozzle and compares pressure versus suction
System Resistance
Describes how the resistance to airflow in your system changes
Series and Parallel Operation
Compares the airflow for air movers in series and in parallel
EMI/EMC
Describes electromagnetic interference
Altitude Operation
Outlines how altitude effects the air flow
Acoustic Noise
Describes acoustic noise, structure borne noise, and compares sound pressure versus sound power
Cooling Device Efficiency
Shows the factors that influence the operating efficiency of air movers
Specific Speed
Describes specific speed, which is the speed where an air mover will deliver one unit of volume against one unit of pressure rise
Storage Procedures
Explains storage procedures for units.