Steam Turbine, Design Data

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Documentation of the design data of the steam turbine - calculation.

 Components:

• Turbine (component 6)
• Steam turbine (ABB type) (component 56)
• Nozzle section control (component 58)

 Example:

 Comments on the report:

Pi	Inner turbine power. (Pmech(Output) - Pmech(Input)) + mechanical losses + piston losses
PmechV	Mechanical losses
eta	Isentropic efficiency
DHv	Outlet losses (dynamic losses) in the operating state
M(n)	nominal mass flow
p(n)	nominal pressure
T(n)	nominal inlet temperature
K2	Cone law constants (swallow number)
Summe: Pi	Total of the inner turbine powers of the individual stages
Summe: PmechV	Total mechanical losses of the individual stages

Calculation of the cone law constants:

 

For each component, as far as available, the input values are documented in the first line and the output values in the second line.

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Generate Sub-report 

• Select all turbine components in the model.
  The components must be selected in the sequence of the highest pressure to the lowest pressure at the turbine inlet.
• Call the dialog box "Modify Sub-Report".
• Select the sub-report "Steam turbine, design data" and import it in the list of the sub-reports.
• Enter an extra title, if needed.
• Select the sub-report for the design data of the steam turbine and then click on the button "Modify" or double-click the sub-report for the design data of the steam turbine.
  The dialog box "Edit Sub-Report" now opens.
• A click on the button "Insert (Sel.)" inserts the components selected earlier in the cycle in the list of the components of the sub-report.
• Close the dialog box for the list of the components through the button "Close".
• Close the dialog box for modifying the sub-report through the button "Close".

 

The components selected earlier are inserted in the sub-report in the order, in which they were selected.