Determination of the Idle Mode of the Stage of Axial Turbine during Operation at Partial Loads

Authors

  • Aleksandr Shubenko
    Affiliation
    Department of process optimization and turbomachinery designs, A. Podgorny Institute of Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, Pozhars'koho St. 2/10, 61046 Kharkiv, Ukraine
  • Vladimir Goloshchapov
    Affiliation
    Department of process optimization and turbomachinery designs, A. Podgorny Institute of Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, Pozhars'koho St. 2/10, 61046 Kharkiv, Ukraine
  • Daria Senetska
    Affiliation
    Department of process optimization and turbomachinery designs, A. Podgorny Institute of Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, Pozhars'koho St. 2/10, 61046 Kharkiv, Ukraine
  • Oleksandr Senetskyi
    Affiliation
    Department of Renewable Energy, O.M. Beketov National University of Urban Economy in Kharkiv, Marshal Bazhanov Street 17, 61002 Kharkiv, Ukraine
https://doi.org/10.3311/PPme.17359

Abstract

On the basis of the one-dimensional theory of calculating the operation of steam turbine stages the method for determining the idle mode, the initial data for which are the geometric characteristics of the blade rows is proposed. Formulas have been obtained that make it possible to calculate the efficiency in the proximity of Rotor Blades (RB) at operating modes from nominal to the idle mode, depending on the flow rate of the stage and taking into account the use of kinetic energy with the runaway velocity and losses arising at off-design angles of flow on the Rotor Blade (RB). The results of possible computational studies and their comparison for an incompressible working fluid with the results of experimental studies showed the good possibilities of the proposed method for determining the idle mode in a wide range of the characteristics of stages.

Keywords:

turbine stage, geometric and energy characteristics of rows, efficiency at the row stage, the idle mode, the relative flow rate

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Published Online

2020-12-02

How to Cite

Shubenko, A., Goloshchapov, V., Senetska, D., Senetskyi, O. “Determination of the Idle Mode of the Stage of Axial Turbine during Operation at Partial Loads”, Periodica Polytechnica Mechanical Engineering, 65(1), pp. 103–109, 2021. https://doi.org/10.3311/PPme.17359

Issue

Vol. 65 No. 1 (2021)

Section

Articles