Air Heaters

E Shop : Process Air Heating : Air Heating Calculator!

Selecting an Air Heater

The energy (kW) requirement is calculated from the following formula:

KW = SCFM x (Texit – Tinlet)
 2500

SCFM = Air flow in Standard* Cubic Feet per Minute
Tinlet = Inlet Air Temperature (°F) (typically 70°F)
Texit = Desired Exit Air Temperature (°F)

SCFM
Tinlet
Texit
KW Required
Total KW

Example: Heating 10 SCFM from ambient temperature (70°F) to 800°F:

KW =  10 SCFM x (800°F – 70°F)  = 2.9 kW
 2500 

Conversion Formulas:
(Liters per Minute)/28.3 = Cubic Feet per Minute
°C = 5/9 (°F – 32)
°F = 9/5°C + 32

*Please refer to "Using an Air Heater" for an explanation of Standard flowrate

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