What Is the Le Chatelier Fuel Mixture Flammability Limits Calculator?
Le Chatelier rule calculates the overall flammability envelope of blended combustible gas mixtures.
How Does the Le Chatelier Fuel Mixture Flammability Limits Calculator Work?
Assumes each component contributes proportionally to the overall chemical heat release necessary to sustain combustion.
Le Chatelier Fuel Mixture Flammability Limits Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
\frac{1}{L_m} = \sum_{i=1}^n \frac{y_i}{L_i} \implies L_m = \frac{1}{\sum_{i=1}^n \frac{y_i}{L_i}}
Le Chatelier reciprocal harmonic mixing law for flammability limits.
How to Use the Le Chatelier Fuel Mixture Flammability Limits Calculator
- Input combustible volume fractions and corresponding pure-component LFL or UFL percentages.
Step-by-Step Example Calculation
Natural Gas Mixture LFL
Input Values:
volumeFraction1:0.7
limitGas1:5
volumeFraction2:0.3
limitGas2:3
Worked Steps: Predicts mixed fuel Lower Flammability Limit (LFL) of 4.17 vol% in air.
Understanding Your Result
Gives resulting mixture flammability threshold percentage in air.
Factors That Affect the Result
- Heavier hydrocarbons with lower individual LFLs pull down the mixture limit disproportionately.
When Should You Use This Calculator?
- Industrial flare gas monitoring, pipeline safety, and enclosed space ventilation design.
Assumptions & Limitations
- Applies to mixtures of similar hydrocarbon fuels; deviations occur with hydrogen or cool-flame gases.
Frequently Asked Questions
Calculation Accuracy & Reference Note
Standard industrial method per NFPA 69 and ISO 10156.