Enclosure cooling

VFD by HP: HP × 746 × 3% loss (3.5% at 240 V and below).
VFD by amps: volts × amps × 1.732 × 3%.
Line reactor: 1.5 W per amp at 3% impedance, 2.0 W per amp at 5%.
Natural dissipation: 0.28 W per ft² per °F of rise for painted steel, back wall excluded when wall mounted.
Solar: top and front area × 6 W/ft² (light) or 14 W/ft² (dark).
Airflow: CFM = 3.16 × watts ÷ ΔT (°F).

Estimate the heat inside an enclosure and the fan airflow needed to hold it at your maximum internal temperature. Results update as you type.

Enclosure

Ambient maximum °F Internal maximum °F Mounting Environment Height in Width in Depth in