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

0564776 - ÚT 2023 RIV CH eng J - Journal Article
Sláma, V. - Šimurda, David - Lenhard, R.
Pressure Losses Downstream of a Compact Valve in the Inlet Chamber of an Intermediate-Pressure Steam Turbine.
Energies. Roč. 15, č. 22 (2022), č. článku 8753. E-ISSN 1996-1073
R&D Projects: GA TA ČR(CZ) TN01000007
Institutional support: RVO:61388998
Keywords : valve * steam turbine * measurement * numerical analysis * pressure loss
OECD category: Applied mechanics
Impact factor: 3.2, year: 2022
Method of publishing: Open access
https://www.mdpi.com/1996-1073/15/22/8753/pdf?version=1669035338

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.

Permanent Link: https://hdl.handle.net/11104/0337618