Abstract
The article deals with testing a reaction blading on an experimental air turbine VT-400, which is situated at the Department of Power System Engineering at University of West Bohemia. Experiments were carried out in cooperation with an industrial partner Doosan Skoda Power. The outputs of these measurements are for example: results of the stage efficiency depending on the speed ratio u/c, the course of reaction, the input and output angles and profile losses along a blade.
Highlights
One of the important steps when designing a flow section of a steam turbine is to calculate efficiency, or more precisely, its preliminary estimation
The article deals with testing a reaction blading on an experimental air turbine VT-400, which is situated at the Department of Power System Engineering at University of West Bohemia
This paper represents a continuation of a long-term research carried out at the Department of Power System Engineering (KKE) in a close cooperation with the company DOOSAN ŠKODA POWER (DSPW)
Summary
One of the important steps when designing a flow section of a steam turbine is to calculate efficiency, or more precisely, its preliminary estimation (efficiency prediction). This is a valuable and confidential know-how of every steam turbine producer. It is a long-term process carried out in research laboratories, including experience from real operation. The research on an experimental air turbine was focused on secondary losses caused by flow in the stage of a steam turbine, as a result of 3Dflow in the channel endwall areas. Tested variants are compared from the point of view of the stage efficiency, reaction, Mach and Reynolds numbers, and regarding the aspect of profile losses
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