In the paper the behaviour of the five-stage experimental steam turbine 10 MW is described during the expansion transition from superheated steam to wet steam as well as the influence of wet steam on the flow path efficiency. The influence of wet steam occurrence on one to four last stages is given by setting the inlet steam parameters. The wetness of steam behind the last stage is calculated using two methods, first by enthalpy drop with the output measured by water brake and second by an optical probe. The results of both methods are compared. The impact of steam wetness increasing on a decrease in turbine efficiency is observed. In the paper the influence of steam wetness on the individual stage efficiency is also described and wetness loss coefficient is determined. Using the optical probe, assessment of poly-disperse structure of fine droplets is carried out, which is presented here by Sauter mean diameter. A pneumatic probe is used to define the distribution of velocities and pressures along the blade length after the last stage.
Skip Nav Destination
ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition
June 11–15, 2018
Oslo, Norway
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5117-3
PROCEEDINGS PAPER
Influence of Wet Steam on the Five-Stage Steam Turbine Efficiency Available to Purchase
Michal Hoznedl,
Michal Hoznedl
Doosan Škoda Power, Pilsen, Czech Republic
Search for other works by this author on:
Michal Kolovratník,
Michal Kolovratník
Czech Technical University, Prague, Czech Republic
Search for other works by this author on:
Ladislav Tajč,
Ladislav Tajč
University of West Bohemia, Pilsen, Czech Republic
Search for other works by this author on:
Andreas P. Weiß,
Andreas P. Weiß
University of Applied Sciences - Amberg Weiden, Amberg, Germany
Search for other works by this author on:
Lukáš Mrózek
Lukáš Mrózek
University of West Bohemia, Pilsen, Czech Republic
Search for other works by this author on:
Michal Hoznedl
Doosan Škoda Power, Pilsen, Czech Republic
Michal Kolovratník
Czech Technical University, Prague, Czech Republic
Ladislav Tajč
University of West Bohemia, Pilsen, Czech Republic
Andreas P. Weiß
University of Applied Sciences - Amberg Weiden, Amberg, Germany
Lukáš Mrózek
University of West Bohemia, Pilsen, Czech Republic
Paper No:
GT2018-75049, V008T29A001; 10 pages
Published Online:
August 30, 2018
Citation
Hoznedl, M, Kolovratník, M, Tajč, L, Weiß, AP, & Mrózek, L. "Influence of Wet Steam on the Five-Stage Steam Turbine Efficiency." Proceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines. Oslo, Norway. June 11–15, 2018. V008T29A001. ASME. https://doi.org/10.1115/GT2018-75049
Download citation file:
40
Views
Related Proceedings Papers
Related Articles
Numerical and Experimental Investigations of Steam Condensation in LP Part of a Large Power Turbine
J. Fluids Eng (April,2009)
An Experimental Investigation of the Influence of Flash-Back Flow on Last Three Stages of Low Pressure Steam Turbines
J. Eng. Gas Turbines Power (May,2015)
Related Chapters
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Pool Boiling
Thermal Management of Microelectronic Equipment, Second Edition