IBT Modular Indirect Fired Bent Tube Heater Formulas

Heating Requirements

Input BTU/Hr =   Blower SCFM * Temp Rise * Density Factor .80

Temp Rise =   Input BTU/Hr * .80 CFM * Density Factor

Density Factor =   1.08 +  (70-Blower Temp) * .024 10

Output BTU/Hr

Output BTU/Hr =   Input BTU/Hr * .80