CARBONCAPTURE Engineering
ToolFusion / CO2 Compressor Skid / Engineering Tools

Project Tool: CO₂ Compressor Skid Commissioning

Specification & Integration Verification

F6 Composition for CO₂ Compressor Skid Commissioning

● Not Golden Verified ● Project Trust Verified Runnable: 5 / 6 steps
VERIFIED SCOPE
○ Compute polytropic head from real-gas enthalpy rise CALCULATION Manual Workflow
○ Calculate theoretical polytropic power from head and flow CALCULATION Runnable
○ Compute polytropic efficiency as ratio of theoretical to actual power CALCULATION Runnable
○ Validate polytropic efficiency against guaranteed minimum PASS / FAIL capable Runnable
○ Calculate surge margin as percentage above surge line CALCULATION Runnable
○ Evaluate compliance with API RP 114 minimum surge margin PASS / FAIL capable Runnable
⚠ This tool does not currently verify ESD_response_time_verification, surge_margin_calculation, polytropic_efficiency_calculation.
PROJECT INPUTS

Runnable deterministic steps: 5 / 6. Enter the project conditions used by this verification workflow. Prefilled values (8/8 inputs) are demonstration inputs, not recommended design values.

01Step 1: Compute polytropic head from real-gas enthalpy riseManual Workflow
To determine actual work input per unit mass using CO₂-specific thermodynamic properties, as ideal-gas assumptions fa...
02Step 2: Calculate theoretical polytropic power from head and flowFormula
kg/s
kJ/kg
To derive the ideal (lossless) power required for the observed pressure ratio and gas path, enabling efficiency denom...
03Step 3: Compute polytropic efficiency as ratio of theoretical to ...Formula
MW
MW
MW
MW
To quantify thermodynamic effectiveness of compression process per ISO 10780 and API RP 686 definitions.
04Step 4: Validate polytropic efficiency against guaranteed minimumValidation Rule
To verify contractual performance compliance: guaranteed η_poly ≥ 72.5% at design point per vendor datasheet.
05Step 5: Calculate surge margin as percentage above surge lineFormula
kg/s
kg/s
To quantify operational safety buffer relative to compressor’s aerodynamic instability limit.
06Step 6: Evaluate compliance with API RP 114 minimum surge marginValidation Rule
To enforce industry-standard safety threshold for continuous operation under variable load.

⚠ Runnable deterministic steps: 5 / 6. Steps marked "Input Required" or "Example Input Required" need user-provided engineering values before calculation.

Deterministic calculation · Results become stale when engineering inputs change.
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ENGINEERING EVIDENCE

Golden Coverage0 / 6
Project Trust11 / 11 PASS
RuntimeDeterministic
Components0 small tools, 6 steps

SCOPE & LIMITATIONS

NOT CURRENTLY VERIFIED
○ ESD_response_time_verification
○ surge_margin_calculation
○ polytropic_efficiency_calculation
These capabilities are outside the current verified workflow.

HOW THIS VERIFICATION WORKS

  1. Step 1: Compute polytropic head from real-gas enthalpy rise — engineering workflow step. Follow the documented method for manual execution.
  2. Step 2: Calculate theoretical polytropic power from head and flow — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  3. Step 3: Compute polytropic efficiency as ratio of theoretical to actual power — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  4. Step 4: Validate polytropic efficiency against guaranteed minimum — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.
  5. Step 5: Calculate surge margin as percentage above surge line — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  6. Step 6: Evaluate compliance with API RP 114 minimum surge margin — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.

This tool coordinates 2 validation steps and 4 calculation steps. The overall engineering decision uses ALL_REQUIRED_VALIDATION_PASS aggregation: only validation steps contribute to the pass/fail outcome; calculation steps produce data only.

METHODS & EQUATIONS

All formulas are resolved from canonical runtime definitions and executed deterministically by the client-side engine.

Step 1: Compute polytropic head from real-gas enthalpy rise

Manual Workflow
Use NIST REFPROP v11 or equivalent real-gas EOS (e.g., GERG-2008) to compute specific enthalpy h_in = h(P_in, T_in, fluid='CO2'), h_out = h(P_out, T_out, fluid='CO2'); then polytropic head H_poly = (h_out - h_in) / 1000 [kJ/kg].

Step 2: Calculate theoretical polytropic power from head and flow

Formulamass_flow_rate * polytropic_head_kj_per_kg * 1000 / 1e6

Step 3: Compute polytropic efficiency as ratio of theoretical to actual power

Formula(P_poly_theo/P_shaft)*100

Step 4: Validate polytropic efficiency against guaranteed minimum

Validation Rule
polytropic_efficiency >= 72.5 [manufacturer_datasheet:Atlas_Copco_ZH_350_CO2_Spec_Sheet_RevD]

Step 5: Calculate surge margin as percentage above surge line

Formula((operating_mass_flow - surge_line_mass_flow) / surge_line_mass_flow) * 100

Step 6: Evaluate compliance with API RP 114 minimum surge margin

Validation Rule
surge_margin_percent >= 10 [engineering_standard:API_RP_114-2021_Section_5.3.2]

UNDERSTANDING THE RESULTS

PASS
A proven validation criterion passed. The engineering input satisfies the deterministic threshold.
FAIL
A proven validation criterion failed. The engineering input does not satisfy the deterministic threshold.
CALCULATED
A deterministic calculation completed, but no acceptance criterion exists for this step. CALCULATED does NOT mean PASS.
RESULT NOT VALID
Runtime executed but engineering validity requirements were not met.
INCOMPLETE
Required inputs or workflow steps are incomplete.

The overall decision reflects only validation steps. Calculation steps produce numerical results without pass/fail claims.

WHEN TO USE THIS TOOL

  • When deterministic CO2 Compressor Skid engineering verification is needed for project-specific conditions.
  • For calculation of Compute polytropic head from real-gas enthalpy rise (Step 1).
  • For calculation of Calculate theoretical polytropic power from head and flow (Step 2).
  • For calculation of Compute polytropic efficiency as ratio of theoretical to actual power (Step 3).
  • For validation of Validate polytropic efficiency against guaranteed minimum (Step 4).
  • For calculation of Calculate surge margin as percentage above surge line (Step 5).
  • For validation of Evaluate compliance with API RP 114 minimum surge margin (Step 6).
  • For deterministic pre-checks before formal engineering review or submission.

When NOT to use this tool: This tool does not replace laboratory testing, formal engineering analysis by a licensed professional, or code-compliance certification. It performs deterministic threshold comparison and calculation only.

ENGINEERING FAQ

What does this verification tool check?

This tool performs 6 deterministic engineering steps: (1) Compute polytropic head from real-gas enthalpy rise, (2) Calculate theoretical polytropic power from head and flow, (3) Compute polytropic efficiency as ratio of theoretical to actual power, (4) Validate polytropic efficiency against guaranteed minimum, (5) Calculate surge margin as percentage above surge line, (6) Evaluate compliance with API RP 114 minimum surge margin.

What does a PASS result mean?

A PASS result means the validation step's deterministic threshold comparison was satisfied. It does not constitute laboratory certification or code compliance.

What does a CALCULATED result mean?

A CALCULATED result means the deterministic calculation completed, but no acceptance criterion is applied to this step. CALCULATED does NOT mean PASS.

What is not currently verified by this workflow?

Capabilities not currently verified include: ESD_response_time_verification, surge_margin_calculation, polytropic_efficiency_calculation.

How many steps are golden verified?

0 out of 6 steps have been verified with deterministic golden test cases.

COMPONENT TOOLS

This workflow currently contains no bound executable Small Tools. Steps are defined by engineering methods and reference materials.

CalculationWorkflow StepCalculate polytropic efficiency of CO₂ compressor at design point from measured performance data
CalculationWorkflow StepCalculate polytropic efficiency of CO₂ compressor at design point from measured performance data
CalculationWorkflow StepCalculate polytropic efficiency of CO₂ compressor at design point from measured performance data
ValidationWorkflow StepCalculate polytropic efficiency of CO₂ compressor at design point from measured performance data
CalculationWorkflow StepAssess surge margin during stepwise load ramp-up based on real-time anti-surge controller (ASC) signals
ValidationWorkflow StepAssess surge margin during stepwise load ramp-up based on real-time anti-surge controller (ASC) signals