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sci.flue-gas-analysis-Orsat Calculator
Calculates excess air and combustion efficiency from Orsat flue gas analysis (% CO₂, O₂, CO by volume absorption). Excess air = 100×O₂/(0.264×N₂−O₂) for methane — 10% excess air gives ≈ 0.5% heat loss through sensible heat in flue gas.
Inputs
Co2 Pct
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
O2 Pct
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Co Pct
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Results
N₂ % (by difference)
The arithmetic difference between the two values.
estimated excess air (%)
The value at the specified point or condition.
CO₂/O₂ ratio
The proportional relationship between two quantities.
flue gas composition
Sample size or count used in the calculation.
combustion quality
A qualitative assessment of how the result compares to the desired standard or benchmark.
maximum CO₂ (stoichiometric)
The largest value in the dataset or feasible range.