Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Bartolomej Rudas"'
Publikováno v:
Energies, Vol 15, Iss 17, p 6440 (2022)
This paper describes the effect of the incidence angle of the bucket on the performance of the axial turbine stage. The off-design operating conditions of the turbine stage result in a change in the velocity diagrams. This results in a positive or ne
Externí odkaz:
https://doaj.org/article/c9ce4229ce7a48f49204733451064dbd
Autor:
Ondrej Novak, Marek Bobcik, Martin Luxa, Jaroslav Fort, Bartolomej Rudas, Jaroslav Synac, David Simurda, Jiri Furst, Jan Halama, Vladimir Hric, Jaromir Prihoda, Zdenek Simka
Publikováno v:
International Journal of Turbomachinery, Propulsion and Power, Vol 4, Iss 4, p 33 (2019)
Recent trends in the electric energy market such as biomass, waste incineration or combined cycle power plants require innovative solutions in steam turbine design. Variable operating conditions cause significant changes in flow field surrounding the
Externí odkaz:
https://doaj.org/article/bcff54b24f774879b38f76451c0ee3cd
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
Stall flutter of long blades influences the operation safety of the large steam turbines in off-design conditions. As angles of attack are typically high, a partial or complete separation of the flow from the blade surface occurs. The prediction of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed03a496b89380f5a7c7d874a01b73f6
https://doi.org/10.1115/1.0004164v
https://doi.org/10.1115/1.0004164v
A new design of an intercept valve assembly of the intermediate-pressure turbine part of greater power output is investigated in terms of pressure losses and flow fluctuations by using measurement on an experimental valve model. In addition, numerica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5e9f381654da52394d19b44ed2d98be
https://doi.org/10.1115/1.0004133v
https://doi.org/10.1115/1.0004133v
Publikováno v:
Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine.
Aerodynamic measurements and numerical simulations carried out on a model of a high-pressure valve assembly used for nozzle governing of a turbine with 135MW output are described in this paper. Aim of the study is to investigate effects of control va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34d26eccb9b824d120886f1396a770f9
https://doi.org/10.1115/gt2020-14474
https://doi.org/10.1115/gt2020-14474
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:
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