Centrifugal Compressor Performance — online
Is your compressor as efficient as it should be, and what does the gap cost?
Yellow cells are inputs; orange cells are choices; blue cells choose the unit. Select or hover over an input to see its help in the box below the toolbar. The sheet is the same as the Excel tool (USD 49) — the Guide, method and references are in the Excel file.
What this centrifugal compressor performance calculator does
Real-gas polytropic head and efficiency from plant readings, an energy-balance check on your measurements, and the yearly energy cost of running away from the best operating point.
- Any gas or mixture. Pure chemicals or mixtures of up to 12 components, including hydrogen-rich, CO₂-rich and wet gas.
- Three methods side by side. Real-gas polytropic (Schultz), ideal-gas n-exponent and isentropic. Flow as actual inlet, standard or mass.
- Real-gas states. Z, density, enthalpy and entropy at suction, discharge and the isentropic point (Peng-Robinson).
- Checks on your data. Energy balance with a warning above 5 % difference, and an expected-versus-measured discharge temperature check.
- What-if energy cost. Power and yearly cost of a lower suction temperature or a different pressure ratio.
- Print-ready report. Ranked findings, performance charts and a report on A4.
How it was checked
Every result and message cell of the online tool was compared with the Excel workbook recalculated independently, at the default inputs and at four sets of randomly changed inputs, with the displayed text identical. The method and sources are those of the Excel tool and its Guide.
Related
- Centrifugal Compressor Performance Excel tool — USD 49, keep the workbook, its Guide and the report sheet.
- All online tools
Questions
Is the centrifugal compressor performance calculator free?
You can enter and check all your data free. The full results, findings and printable sheet are unlocked with a 3-run pack (USD 9), a monthly subscription to all online tools (USD 15) or a yearly one (USD 99).
Are the results the same as the Excel tool?
Yes. The online tool runs the formulas of the Centrifugal Compressor Performance Excel workbook and was checked cell by cell against the Excel file.