Pressure Losses Downstream of a Compact Valve in the Inlet Chamber of an Intermediate-Pressure Steam Turbine

Vaclav Slama (), David Simurda and Richard Lenhard
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Vaclav Slama: Doosan Skoda Power, Tylova 1/57, 301 28 Pilsen, Czech Republic
David Simurda: Institute of Thermomechanics of the Czech Academy of Sciences, Dolejskova 1402/5, 182 00 Praha 8, Czech Republic
Richard Lenhard: Department of Power Engineering, University of Zilina, Univerzitna 8215/1, 010 26 Zilina, Slovakia

Energies, 2022, vol. 15, issue 22, 1-11

Abstract: Deep knowledge about pressure and energy losses in each part of a steam turbine is crucial for assuring the required efficiency and operational reliability. This paper presents the experimental as well as the numerical study of pressure losses in the inlet chamber of an intermediate-pressure steam turbine. Measurements were carried out on a complex model, where not only was there an inlet turbine chamber, but also a compact valve assembly situated upstream and nozzles situated downstream. The compact valve as well as the turbine inlet chamber were relatively small. Therefore, greater pressure losses were expected. The aerodynamic laboratory of the Institute of Thermomechanics of the Czech Academy of Sciences was responsible for acquiring the measurements, which were carried out in a modular in-draft wind tunnel. In order to learn further details, numerical simulations were carried out. Doosan Skoda Power was responsible for this. A package of ANSYS software tools was used. Measured data were described and compared with numerical ones. Pressure losses were generalized in the form of the total pressure loss coefficient. As a result, pressure losses in similar turbine compact inlet chambers can be predicted with the required accuracy.

Keywords: valve; steam turbine; measurement; numerical analysis; pressure loss (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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