Process Gas Compressibility Volume Factor Tool

Description

Return ideal and compressibility-corrected gas volumes.

Physical process calculations combine supplied geometry, material properties and pressure or gas-state conventions. A density scaling, ideal-gas correction or vessel-volume term can be dimensionally consistent without verifying the actual fluid state, flow regime or equipment suitability.

Return ideal and compressibility-corrected gas volumes.

When to use this tool

Use Process Gas Compressibility Volume Factor when evaluating the stated geometric, fluid-property or gas-state term.

How to use the tool and how it works

Enter moles, compressibility, gasConstant, temperatureK, pressure. Use the units and conventions below.
Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
Read idealVolume, correctedVolume. Use the output convention below.

Return ideal and compressibility-corrected gas volumes. Require moles >= 0 and positive Z, gas constant, kelvin temperature and absolute pressure; idealVolume = nRT/P, correctedVolume = Z*nRT/P.^[1]

Input field	Meaning and units	Accepted input
moles	Moles	Required. Finite number; minimum 0.
compressibility	Positive supplied dimensionless Z; no equation of state is solved.	Required. Finite number; strictly above 0.
gasConstant	Gas Constant	Required. Finite number; strictly above 0.
temperatureK	Positive absolute gas temperature in kelvins. Unit: K.	Required. Finite number; strictly above 0.
pressure	Positive absolute pressure; Pa with an SI gas constant.	Required. Finite number; strictly above 0.

Output field	Interpretation	Returned shape
idealVolume	Ideal Volume	Required. Finite number.
correctedVolume	Corrected Volume	Required. Finite number.

json

{
  "input": {
    "moles": 2,
    "compressibility": 0.9,
    "gasConstant": 8,
    "temperatureK": 300,
    "pressure": 100000
  },
  "output": {
    "idealVolume": 0.048,
    "correctedVolume": 0.0432
  }
}

Limitations and assumptions

Units must be consistent; Z is supplied and no equation of state, phase condition or safe pressure is determined.
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 verified geometry and state-specific material data with an appropriate full engineering model for actual flow, storage or equipment design.

References

Calculation and input contract: chemical-engineering/process-gas-compressibility-volume-factor — tool.io

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