Process Heaters for Air and Gases 
Process Heaters for
Air and Gases

SYLVANIA Heaters are now branded OSRAM Heaters. Same high quality products and service.

Download the OSRAM Air Heaters Catalog

Selecting an Air Heater


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


KW = SCFM x (Texit – Tinlet)


SCFM = Air flow in Standard* Cubic Feet per Minute
Tinlet = Inlet Air Temperature (°F) (typically 70°F)
Texit = Desired Exit Air Temperature (°F)
Example: Heating 10 SCFM from ambient temperature (70°F) to 800°F:
KW = 10 SCFM x (800°F – 70°F) = 2.9 kW


Conversion Formulas:

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