Airflow & Psychrometrics ✓ ISO/ASHRAE Thermodynamic Math • Calibrated for 42°C Tropical Ambient

Duct Air Velocity (FPM & m/s)

Calculate airflow velocity inside round and rectangular ducts. Classify acoustic noise and static friction penalties.

⚡ Live Interactive Computation Engine ✓ Real-Time Field Calibrated

Airflow (CFM):

Duct Width (Inches):

Duct Height (Inches):

Duct Velocity

1,029 FPM

5.23 m/s Air Speed

OPTIMAL FOR COMMERCIAL OFFICES (700 - 1,200 FPM)

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Technical Engineering Guide & Field Diagnostic Practices

Air velocity directly governs sound levels, static pressure drops, and diffuser throw distance. Keeping air velocities below 800 FPM in residential living quarters prevents unwanted fan and grill rumble.

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