Turbine Work Calculator

Actual turbine steady mass flow×signed inlet minus outlet specific enthalpy, same convention; heat/kinetic changes excluded. Actual independently established compatible SI units/model context; conditional arithmetic, not code compliance, engineering design or safe operation approval.

Description

Steady turbine power can be estimated from mass flow and a signed specific-enthalpy drop under a restricted energy balance.

Steady turbine power can be estimated from mass flow and a signed specific-enthalpy drop under a restricted energy balance.1

This tool evaluates that supplied balance without adding heat transfer or kinetic-energy changes.

When to use Turbine Work Calculator

Use this tool to evaluate that supplied balance without adding heat transfer or kinetic-energy changes.

How to use Turbine Work Calculator and how it works

  1. Prepare actualMassFlowKgPerSecond, actualInletSpecificEnthalpyJoulesPerKg, actualOutletSpecificEnthalpyJoulesPerKg, with the units, conventions and assumptions below.
  2. Enter the required fields and run Turbine Work Calculator.
  3. Read result.value using the output definitions below.
  4. Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
Input fieldMeaningValue typeRequirement
actualMassFlowKgPerSecondActual Mass Flow Kg Per Second. Use the units and matching context stated in the calculation below.numberRequired; nonnegative; finite; other constraints below
actualInletSpecificEnthalpyJoulesPerKgActual Inlet Specific Enthalpy Joules Per Kg. Use the units and matching context stated in the calculation below.numberRequired; finite; other constraints below
actualOutletSpecificEnthalpyJoulesPerKgActual Outlet Specific Enthalpy Joules Per Kg. Use the units and matching context stated in the calculation below.numberRequired; finite; other constraints below

Supply nonnegative mass flow in kilograms per second and finite inlet and outlet specific enthalpies in joules per kilogram on a common reference. Return massFlow*(inlet-outlet) in watts, preserving negative differences. Kinetic, potential, heat-transfer and equipment-efficiency effects are not added.

workRateWatts=massFlowKgPerSecond*(inletEnthalpy-outletEnthalpy)

Apply the input ordering, units and branch conditions stated above.

Output fieldMeaningValue type
resultObject containing the calculated or selected fields below.object
result.valueConditional power in watts.number
json
{
  "input": {
    "actualMassFlowKgPerSecond": 2,
    "actualInletSpecificEnthalpyJoulesPerKg": 20,
    "actualOutletSpecificEnthalpyJoulesPerKg": 10
  },
  "output": {
    "result": {
      "value": 20
    }
  }
}

Limitations and assumptions

The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.

All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.

Alternative or Complementary methods

Use Compressor Power Calculator for a complementary operation: A restricted adiabatic compressor balance uses mass flow, matched heat capacity and observed temperature rise.

Use Combined Cycle Efficiency Calculator for a complementary operation: An ideal combined-cycle balance depends on compatible top-cycle, recovery and bottom-cycle efficiency definitions.

References

  1. Turbine Work Calculator — tool.io

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