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Module: Centrifugal Fan & Blower SizingVersion: v1.0.0Method: Fan Sizing

Centrifugal Fan & Blower Sizing Calculator

Fan air power, brake horsepower, operating density correction, motor selection, and affinity law speed scaling per AMCA 210 and ASHRAE 51.

Air power, brake power and motor size from flow, pressure and air density · AMCA 210 / ASHRAE 51

1

Duty Point & Air Conditions

m³/h
Pa
Unit:
mm

v = 14.1 m/s · Pv = 120 Pa

%
°C
m

ρ = 1.204 kg/m³ (100 % of standard air)

%

Fan, Duct & Drive

AMCA 210MQ 10,000 m³/hPs 1000 PaD 500 mm

AMCA 210 · Pt = Ps + Pv at the fan outlet

2

Results

Ready to calculate

Enter values and press Calculate to see results.

4

Reference Codes & Standards

AMCA 210 / ASHRAE 51Governing Code

Laboratory Methods of Testing Fans for Aerodynamic Performance Rating

Scope:Air power, static & total pressure measurement, and density correction.
ISO 5801:2017Governing Code

Fans — Performance testing using standardized airways

Scope:International fan rating standards.
IEC 60034-30 / NEMA MG-1Governing Code

Standard Ratings for Electric Motors

Scope:Commercial motor frame selection and sizing margins.
Literature & Further Reading
  • [1]AMCA 210 / ASHRAE 51 — Laboratory Methods of Testing Fans.
  • [2]Buffalo Forge — Fan Engineering Handbook.
  • [3]ASHRAE Handbook — Fundamentals (Duct Design & Airflow).