暖通空调
ToolFusion / Chiller / Engineering Tools

Project Tool: Chiller Equipment Sizing And Selection

Specification & Integration Verification

F6 Composition for Chiller Equipment Sizing And Selection

● Not Golden Verified ● Project Trust Verified Runnable: 5 / 7 steps
VERIFIED SCOPE
○ calculate_mass_flow_rate CALCULATION Runnable
○ convert_to_volumetric_flow CALCULATION Runnable
○ verify_min_delta_t_compliance PASS / FAIL capable Manual Workflow
○ estimate_cop_by_compressor_type CALCULATION Partial
○ calculate_full_load_input_power CALCULATION Runnable
○ apply_service_factor_and_nec_margin CALCULATION Runnable
○ verify_cop_based_power_against_ahri_max PASS / FAIL capable Runnable
⚠ This tool does not currently verify Design Cooling Load Calculation (ASHRAE-compliant), Chiller Capacity Derating Assessment (AHRI-comp..., Multi-Criteria Chiller Type Selection Engine, Jurisdictional Code Compliance Checker, Design_Cooling_Load_Calculation, Chilled_Water_Flow_Rate_and_Capacity_Sizing, Chiller_Technology_Selection_Rule_Engine, Chiller_Performance_Prediction_Engine, Standards_Compliance_Verification_Engine.
PROJECT INPUTS

Runnable deterministic steps: 5 / 7. Enter the project conditions used by this verification workflow. Prefilled values (14/26 inputs) are demonstration inputs, not recommended design values.

01Step 1: calculate_mass_flow_rateFormula
kW
kJ/(kg·K)
°C
°C
02Step 2: convert_to_volumetric_flowFormula
kg/s
kg/m³
03Step 3: verify_min_delta_t_complianceManual Workflow
04Step 4: estimate_cop_by_compressor_typeFormula
°C
°C
dimensionless
05Step 5: calculate_full_load_input_powerFormula
kW
dimensionless
06Step 6: apply_service_factor_and_nec_marginFormula
kW
V
dimensionless
07Step 7: verify_cop_based_power_against_ahri_maxValidation Rule

⚠ Runnable deterministic steps: 5 / 7. Steps marked "Input Required" or "Example Input Required" need user-provided engineering values before calculation.

Deterministic calculation · Results become stale when engineering inputs change.
ToolFusion Engineering Network

ToolFusion Engineering Network

Access thousands of engineering calculators, standards, and design tools. Join the ToolFusion network for comprehensive engineering resources.

Explore ToolFusion

ENGINEERING EVIDENCE

Golden Coverage0 / 7
Project Trust11 / 11 PASS
RuntimeDeterministic
Components0 small tools, 7 steps

SCOPE & LIMITATIONS

NOT CURRENTLY VERIFIED
○ Design Cooling Load Calculation (ASHRAE-compliant)
○ Chiller Capacity Derating Assessment (AHRI-compliant)
○ Multi-Criteria Chiller Type Selection Engine
○ Jurisdictional Code Compliance Checker
○ Design_Cooling_Load_Calculation
○ Chilled_Water_Flow_Rate_and_Capacity_Sizing
○ Chiller_Technology_Selection_Rule_Engine
○ Chiller_Performance_Prediction_Engine
○ Standards_Compliance_Verification_Engine
These capabilities are outside the current verified workflow.

HOW THIS VERIFICATION WORKS

  1. Step 1: calculate_mass_flow_rate — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  2. Step 2: convert_to_volumetric_flow — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  3. Step 3: verify_min_delta_t_compliance — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.
  4. Step 4: estimate_cop_by_compressor_type — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  5. Step 5: calculate_full_load_input_power — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  6. Step 6: apply_service_factor_and_nec_margin — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  7. Step 7: verify_cop_based_power_against_ahri_max — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.

This tool coordinates 2 validation steps and 5 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: calculate_mass_flow_rate

FormulaQ_total/(c_p*(t_chwr-t_chws))

Step 2: convert_to_volumetric_flow

Formulam_dot / (rho / 1000.0)

Step 3: verify_min_delta_t_compliance

Manual Workflow
Verify that (t_chwr - t_chws) >= 5.0 °C per engineering_standard:ASHRAE_HVAC_Systems_and_Equipment_2020_Ch4

Step 4: estimate_cop_by_compressor_type

Formula= 'centrifugal': 4.0 = 6.1 - 0.05*(t_cwi - 29.4) + 0.02*(7.2 - t_chws). If comp_type == 'screw': 4.0 = 5.2 - 0.04*(t_cwi - 29.4) + 0.015*(7.2 - t_chws). If comp_type == 'reciprocating': 4.0 = 4.0 - 0.03*(t_cwi - 29.4) + 0.01*(7.2 - t_chws). All coefficients calibrated to AHRI 550-2022 typical performance curves

Step 5: calculate_full_load_input_power

FormulaQ_total/COP_fl

Step 6: apply_service_factor_and_nec_margin

Formula1.25 * (P_fl * 1000) / (sqrt(3) * v_system * pf)

Step 7: verify_cop_based_power_against_ahri_max

Validation Rule
P_fl <= 35 [manufacturer_datasheet:Trane]

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 Chiller engineering verification is needed for project-specific conditions.
  • For calculation of calculate_mass_flow_rate (Step 1).
  • For calculation of convert_to_volumetric_flow (Step 2).
  • For validation of verify_min_delta_t_compliance (Step 3).
  • For calculation of estimate_cop_by_compressor_type (Step 4).
  • For calculation of calculate_full_load_input_power (Step 5).
  • For calculation of apply_service_factor_and_nec_margin (Step 6).
  • For validation of verify_cop_based_power_against_ahri_max (Step 7).
  • 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 7 deterministic engineering steps: (1) calculate_mass_flow_rate, (2) convert_to_volumetric_flow, (3) verify_min_delta_t_compliance, (4) estimate_cop_by_compressor_type, (5) calculate_full_load_input_power, (6) apply_service_factor_and_nec_margin, (7) verify_cop_based_power_against_ahri_max.

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: Design Cooling Load Calculation (ASHRAE-compliant), Chiller Capacity Derating Assessment (AHRI-compliant), Multi-Criteria Chiller Type Selection Engine, Jurisdictional Code Compliance Checker, Design_Cooling_Load_Calculation.

How many steps are golden verified?

0 out of 7 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 StepChiller evaporator water flow rate determination
CalculationWorkflow StepChiller evaporator water flow rate determination
ValidationWorkflow StepChiller evaporator water flow rate determination
CalculationWorkflow StepChiller full-load COP estimation from design conditions
CalculationWorkflow StepChiller motor input power sizing with safety margin
CalculationWorkflow StepChiller motor input power sizing with safety margin
ValidationWorkflow StepChiller motor input power sizing with safety margin