|Title:||Experimental investigation on performance of a control stage turbine under partial admission||Authors:||Berger, Antonio
|Language:||eng||Keywords:||Partial Admission;Steam Turbine||Subject (DDC):||DDC - Dewey Decimal Classification::600 Technik::620 Ingenieurwissenschaften||Issue Date:||Apr-2019||Document Type:||Article||Pages:||1-12||Conference:||13th European Turbomachinery Fluid Dynamics and Thermodynamics 2019||Abstract:||
Operation of industrial steam turbines under partial admission is usually implemented in order to cope with ﬂuctuations in demand while maintaining a high efﬁciency. Subject of the article presented is the experimental investigation of the performance and efﬁciency of a control stage operated with air, under partial admission. Furthermore, the steady state blade loading distribution on the stator in a free passage and at the entry into a not admitted passage is observed.
For the experiment, the single-staged axial-ﬂow turbine is operated with varying shaft speed, pressure ratio and admission rate, realized by ﬂow blockaging. Two rotationally symmetric stator endwall designs are tested: a plane and a contoured endwall.
Reducing the admission rate at part load decreases the efﬁciency, especially at high circumferential velocities as precedent investigations showed. Pumping and mixing loss behaviour shows a different scale across the performance map. To prove CFD Simulations, results of the blade loading distribution on the stator are acquired.
|Organization Units (connected with the publication):||Strömungsmaschinen in der Energietechnik
Bundesministerium für Wirtschaft und Energie (BMWi)
|Appears in Collections:||Publications of the HSU Researchers|
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