Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Vaclav Slama"'
Publikováno v:
Energies, Vol 15, Iss 22, p 8753 (2022)
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
Externí odkaz:
https://doaj.org/article/46ae42c380c345ffb3dc70d79b4edcee
Publikováno v:
Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine.
Steam turbines belong to the most important systems in power conversion. In order to control their power output at steady state base load or part load conditions, the use of control valves is a widely used method. The flow in a pair of high-pressure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddf94d547ca5632169ec52d41844e2cb
https://doi.org/10.1115/gt2022-78969
https://doi.org/10.1115/gt2022-78969
Autor:
Roberto Guida, Lorenzo Pinelli, Vaclav Slama, Andrea Arnone, Federico Vanti, Michela Marrè Brunenghi, Claudio Bettini, Andrea Bessone, Lorenzo Peruzzi
Publikováno v:
Volume 10A: Structures and Dynamics.
This paper is part of a two-part publication that aims to experimentally and numerically evaluate the aerodynamic and mechanical damping of a last stage ST blade at low load operation. A three-stage downscaled steam turbine with a snubbered last stag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dcb98c35e50b03658f8fbd1dcfe170a
https://doi.org/10.1115/gt2020-15409
https://doi.org/10.1115/gt2020-15409
Publikováno v:
MATEC Web of Conferences. 369:01002
Know-how about energy and pressure losses in all steam turbine parts is crucial to guarantee enhanced operational reliability and efficiency. This paper focuses on studying pressure losses in the intermediate-pressure turbine inlet chamber. Measureme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78f00c28e81e0018e6498cf4e24edc27
https://doi.org/10.1051/matecconf/202236901002
https://doi.org/10.1051/matecconf/202236901002
Publikováno v:
EPJ Web of Conferences. 269:01063
There is the still remaining task to increase the efficiency of power plants and steam turbines. One possibility to increase the thermodynamic efficiency is to apply a suitable exhaust hood. Axial exhaust hoods are mainly designed for small turbines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb4966950017f88e71aadb4432ed54af
https://doi.org/10.1051/epjconf/202226901063
https://doi.org/10.1051/epjconf/202226901063
Autor:
Vaclav Slama, David Simurda, Ladislav Tajc, Bartolomej Rudas, Jindrich Hala, Martin Luxa, Tomas Radnic
Publikováno v:
EPJ Web of Conferences. 264:01042
Valves are integral parts of modern steam turbines. They provide flexible operations and fast load changes which have become more often due to the increasing share of renewable energy. Along with this, the low pressure loss is required for guaranteed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a86dc7c5c022cd29848ee7ce276631fc
https://doi.org/10.1051/epjconf/202226401042
https://doi.org/10.1051/epjconf/202226401042
Autor:
Lorenzo Pinelli, Jiří Ira, Ales Macalka, Federico Vanti, Antonio Alfio Lo Balbo, Vaclav Slama, Andrea Arnone, Volodymyr Tsymbalyuk, Petr Eret, Bartoloměj Rudas
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 20, Iss 0, Pp 98-107 (2018)
Acta Polytechnica CTU Proceedings
Sygma
DOAJ-Articles
Acta Polytechnica CTU Proceedings
Sygma
DOAJ-Articles
In this paper, experimental testing of flutter and numerical simulations using a commercial code ANSYS CFX and an in-house code TRAF are performed on an oscillating linear cascade of turbine blades installed in a subsonic test rig. Bending and torsio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3010d624a5fa9b7232c22ec5db73f1b6
https://ojs.cvut.cz/ojs/index.php/APP/article/view/5372
https://ojs.cvut.cz/ojs/index.php/APP/article/view/5372
Autor:
Ales Macalka, Jiri Ira, Antonin Zivny, David Šimurda, Bartolomej Rudas, Jan Hlous, Ondrej Novak, Martin Luxa, Vaclav Slama, Marek Bobcik, Zdenek Simka, Petr Mestanek, Josef Kellner
Publikováno v:
Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines.
For modern steam turbines with large operating range and enhanced efficiency an ultra-long last stage rotor blade in a low pressure turbine part for high backpressure and 50 Hz fixed speed operation have been developed. An advanced design approach wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea2764b7d45c63f271f48ccc21835bf2
https://doi.org/10.1115/gt2019-90350
https://doi.org/10.1115/gt2019-90350
Publikováno v:
Volume 4A: Dynamics, Vibration, and Control.
In order to eliminate occurrences of flutter of low pressure turbine blades it is necessary to understand the associated unsteady aerodynamics. For this reason, an experimental and numerical study of controlled flutter (travelling wave mode) in a lin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80d145f776e5d344871e0602ba26d7a8
https://doi.org/10.1115/imece2018-86667
https://doi.org/10.1115/imece2018-86667
In low-pressure steam turbines, aerodynamic and structural design of the last stage blades is critical in determining the power plant efficiency. The development of longer last stage blades which are recently over 1 meter in length is an important ta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76927d9ef8f23e0e7c89c4e07a8fa6c9
http://hdl.handle.net/11025/31276
http://hdl.handle.net/11025/31276
