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What are the Fan Affinity Laws and why are they important?
The Fan Affinity Laws describe how airflow, pressure, and power change with the speed of the fan:
What is the difference between static pressure and total pressure?
Static pressure (Ps) is the pressure exerted by the fan that does not involve air movement, it’s the pressure measured in a sealed, stable environment.…
How does FEI compare to previous metrics like FEG and FMEG?
Both metrics fall short because most fans rarely operate at peak lab conditions. FEI, in contrast, is calculated across the entire operating range and at…
When should you use static pressure vs. total pressure in FEI calculations?
he choice between static pressure and total pressure in FEI calculations depends on the fan type and system configuration: The AMCA 208 and 214 standards…
How does WebFAN handle multiple operating points and system configuration?
WebFAN offers multi operating point functionality, allowing users to define different scenarios (e.g., summer vs. winter conditions). It calculates fan speed, power, efficiency, density, and…
How does WebFAN support redundancy configurations like N‑1 or N+1?
WebFAN supports redundant fan array configurations. It can calculate N‑1 setups (one fan off-line yet still maintaining required performance) and N+1 (extra fan for redundancy)…