Flare Stack Sizing Calculator

This is a sample of the Flare Stack Sizing Calculator. To access the working calculator, please sign up for free membership trial.

Flare stack sizing calculator to determine the required flare stack height based on radiation at the flare tip.

Hydrocarbon vapor flowrate kg/hr
Vapor molecular weight gm/gmole
Flow temperature 0C
Heat of combustion kJ/kg
Specific heat ratio - Cp/Cv
Wind velocity m/s
Mach Number in stack
Fraction of heat generation radiated
Stack Diameter m
Heat generated kW
Flame length m
Stack Height m

The stack height calculation is based on the allowable radiation at a certain horizontal distance from stack. Here the limit that has been considered is 6.3X106 kW/m2 at a distance of 150 feet (45.7m) from the flare stack.


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