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Steam Turbine Performance — online

Is your steam turbine running as it should, and what does the gap cost?

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Sheet

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 39) — the Guide, method and references are in the Excel file.

Input help: select an input to see what it means and which units it takes.

What this steam turbine performance calculator does

Isentropic efficiency, steam rate, heat rate and exhaust wetness of a condensing or back-pressure steam turbine from plant readings, with the yearly cost of the efficiency shortfall.

  • Condensing or back-pressure. One selector sets the turbine type.
  • Efficiency from your readings. From measured power (generator or shaft), or from the exhaust temperature when the exhaust is superheated.
  • Exhaust and wetness. Exhaust dryness and temperature, with a wet-exhaust warning for blade erosion.
  • Cost of the shortfall. Power lost, extra steam for the same power, and energy cost per year against your design or guarantee efficiency.
  • What-if tables. Power gained or lost at a different exhaust pressure or inlet temperature.
  • Print-ready report. Ranked findings, two charts and a report on A4. Steam properties built in (IAPWS-IF97).

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

Questions

Is the steam turbine 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 Steam Turbine Performance Excel workbook and was checked cell by cell against the Excel file.