Flare Tip Radiation & Flame Calculator

API 521 flare system thermal design: Calculate flame length (\(L\)), flame tilt under crosswind, ground-level radiation intensity (\(K\)), and minimum stack height.

Flare Gas Relief & Environmental Conditions

Relief Gas Rate (kg/h):

Gas Lower Heating Value (MJ/kg):

Tip Inside Dia (mm):

Crosswind Speed (m/s): API design: 9.0 m/s (20 mph)

Radiation Emissivity F: Methane 0.20, HCs 0.25-0.35

Current Stack Height (m):

Radial Distance from Base (m):

Thermal Radiation & Flame Geometry

Ground Thermal Radiation (K)

API 521 Exposure Limit

Flame Length (L)

Flame Tilt Angle

Heat Release Q

Safety Exclusion Zone Assessment

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Flare Tip Radiation & Flame Calculator

Flare Gas Relief & Environmental Conditions

Thermal Radiation & Flame Geometry

Frequently Asked Questions