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Due to the structure of this page, to preserve the layout it is retained the way it was many years back. The page may look old/ dated. This is intentional, not an error.

This page allows you to perform the following calculations:
  lbs/hr Select Calculation Type
Stack
Damper
lbs/hr Fluegas % of Total
° F
O2% Air Heater
°F Bypass lbs/hr
lbs/hr ° F
% O2 lbs/hr
% O2 ACFM
% Brnr Rls Duty
MM Btu/hr °F
Firing Rate
MM Btu/hr °F °F
lbs/hr
% ExAir
lbs/hr ACFM
System Efficiency, %







Type of fuel

For Gas Fuel, Input Composition, mole %
CH4 = C6H14 = C2H4 =
C2H6 = CO = C3H6 =
C3H8 = H2 = N-C4H8 =
N-C4H10 = N2 = C6H6 =
I-C4H10 = CO2 = H2O =
N-C5H12 = C = O2 =
I-C5H12 = S = H2S =

For Liquid Fuel, Input Weight Percent Units
Sulphur = Hydrogen = Carbon =
Nitrogen = Oxygen = Water =
Lower Heating Value, Btu/lb =
Fuel Temperature, ° F =
Fuel Sp. Ht., Btu/lb-°F =
Atomizing Medium
Air/Steam psig = Injection Rate =







Air Input As

Input Composition, mole %
Nitrogen, N2 = Oxygen, O2 =
Carbon Dioxide, CO2 = Water, H2O =
Argon, Ar = Sulphur Dioxide, SO2 =
Carbon Monoxide, CO =
Elevation, ft =
Relative Humidity, % =
Note: If input as dry, Rel. Humidity used to compute water.
If wet, then Rel. Humidity not used, and water must be input.




























Disclaimer:

The formulas and correlations presented herein are all in the public domain and are to be used only as a learning tool. Note that any product, process, or technology in this document may be the subject of other intellectual property rights reserved by sponsors or contributors to this site. This publication is provided as is, without any warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of fitness for a particular purpose, or non-infringement.

The formulas, correlations, and methods presented herein should not be considered as being recommended by or used by the sponsors of this site. The purpose of this site is educational and the methods may or may not be suitable for actual design of equipment. Only a fired heater design engineer is qualified to decide if a calculation or procedure is correct for an application.