Measurements on the Vt 400 Air Turbine

Abstract

<p class="Abstraktpspvku">This paper presents a basic description of measurements on the experimental air turbine located in the laboratories of the Department of Power System Engineering (KKE). The research on this turbine focuses on the flow in a one-stage air turbine. It monitors the influence of the spatial formation of the blades on the efficiency of the stage. A new geometry with reaction blading is currently being tested. This work has been carried out in cooperation with an industrial partner, Doosan Skoda Power (DSPW).</p>

Experimental Evaluation of Axial Reaction Turbine Stage Bucket Losses

“…The mass flow of the working medium is determined by a standardized nozzle. Static pressure taps are located in individual sections of the turbine, and two 5-hole pneumatic probes are used for detailed flow field measurements [1,11].…”

“…Spatial blade shaping in general is one of the main means of increasing the blading efficiency. It focuses primarily on reducing the effect of secondary flow and associated losses, but also on the targeted redistribution of certain flow parameters, not only along the blades lengths, but also within the stage, or indeed within the whole turbine flow path [1].…”

“…This development resulted in an efficiency increase of about 2% in the high-pressure (HP) turbine section and 1.5% in the intermediate-pressure (IP) turbine section compared to the conventional prismatic blading. The proposed principles have also been successfully deployed in the practise many times [1].…”

Experimental turbine VT-400

“…Since 2000, the research has been focused mainly on the influence of blade shaping on the stage efficiency [1], [2], [3], [4].…”

Measurement on Axial Reaction Turbine Stage

“…More information about experimental device can be found in the papers [2,3]. At present, the department has three turbine stages with different reactions, which were designed by our industrial partner Doosan Skoda Power .…”