Oil & Gas Engineering

Compression Ratio Calculator

Calculate compressor stage compression ratio (CR = Pd / Ps, absolute).

Quick Answer

The compression ratio calculator computes compression ratio calculator from the input values you provide.

Calculator

Compression Ratio Calculator

Result Interpretation

The result shows Compression Ratio Calculator, computed directly from the entered inputs using the formula defined for this tool.

Worked Example

Verified calculation

Given:

  • api_gravity = 10

Expected Result:

  • density_kg_m3 = 999.016
  • specific_gravity = 1

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from verified test cases.

Formula / Method

compression ratio calculator = f(inputs)

Computes: Compression Ratio Calculator.

Variables

SymbolLabelRoleDescription
discharge_kpa Discharge pressure (abs) INPUT Discharge pressure (abs)
suction_kpa Suction pressure (abs) INPUT Suction pressure (abs)
compression_ratio Compression Ratio Calculator OUTPUT Compression Ratio Calculator

Calculation Steps

  1. Enter the discharge pressure (abs) in kPa.
  2. Enter the suction pressure (abs) in kPa.
  3. Step 1: Compute compression ratio calculator.
  4. Read the compression ratio calculator from the results.

Notes / Limitations

  • ASSUMPTIONMeasurement temperature is 60°F (15.56°C)
  • ASSUMPTIONWater density at 60°F = 999.016 kg/m³
  • ASSUMPTIONAPI gravity scale is based on the Arsel formula (1921)
  • LIMITATIONDoes not account for temperature correction — density is only valid at 60°F
  • LIMITATIONNot applicable to non-petroleum fluids or emulsions
  • LIMITATIONAccuracy depends on accuracy of input API gravity value

Frequently Asked Questions

What does this calculator calculate?

The Compression Ratio Calculator estimates Compression Ratio Calculator based on the input parameters you provide

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Discharge pressure (abs) (kPa), Suction pressure (abs) (kPa). Make sure all inputs use the specified units for consistent results

How does Discharge pressure (abs) affect the results?

The discharge pressure (abs) directly affects: Compression Ratio Calculator. Increasing or decreasing this value will change these output values according to the engineering formula

How should I interpret the calculated results?

The calculator provides the following outputs: compression ratio calculator. Results are computed from the input values using the defined calculation method. Always verify results against project-specific requirements and applicable standards

What assumptions does this calculator use?

This calculator uses verified engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

When is this calculation useful?

The Compression Ratio Calculator is useful during preliminary design, feasibility studies, and quick engineering checks in calculator projects. It helps engineers and designers estimate key parameters before proceeding with detailed analysis

Technical Details
Assumption
Measurement temperature is 60°F (15.56°C)
Assumption
Water density at 60°F = 999.016 kg/m³
Assumption
API gravity scale is based on the Arsel formula (1921)
Limitation
Does not account for temperature correction — density is only valid at 60°F
Limitation
Not applicable to non-petroleum fluids or emulsions
Limitation
Accuracy depends on accuracy of input API gravity value

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