Description
Calculate a supplied vapor-to-liquid component mole-fraction ratio.
Engineering scalar terms depend on mass versus mole bases, absolute state variables and the process boundary. A vapor/liquid ratio differs from a reaction equilibrium constant, space time differs from a measured residence-time distribution, and fouling-area scaling preserves a specified heat-transfer product. Supplied terms do not validate an actual process.
Calculate a supplied vapor-to-liquid component mole-fraction ratio.
When to use this tool
Use Vapor Liquid Component K-Value when you already have vaporMoleFraction, liquidMoleFraction and need to calculate a supplied vapor-to-liquid component mole-fraction ratio.
How to use the tool and how it works
- Enter vaporMoleFraction, liquidMoleFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read equilibriumKValue. Use the output convention below.
Require vapor fraction in [0,1] and liquid fraction in (0,1]; return vapor/liquid.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| vaporMoleFraction | Vapor Mole Fraction | Required. Finite number; minimum 0; maximum 1. |
| liquidMoleFraction | Liquid Mole Fraction | Required. Finite number; maximum 1; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| equilibriumKValue | vaporMoleFraction/liquidMoleFraction for the same component and state; not a reaction equilibrium constant. | Required. Finite number. |
{
"input": {
"vaporMoleFraction": 0.4,
"liquidMoleFraction": 0.2
},
"output": {
"equilibriumKValue": 2
}
}Limitations and assumptions
- This K value concerns the same component and conditions, not a reaction equilibrium constant. No phase equilibrium, composition, activity model or operating condition is established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use complete material, energy, phase and equipment models with verified operating conditions. Check concentration bases, gas reference states and measurement uncertainty before applying local ratios or balances to process design or operation.
References
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