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Master's Thesis
Author of thesis: Bc. Pavol Hudák
Acad. year: 2025/2026
Supervisor: Ing. Petr Kracík, Ph.D.
Reviewer: doc. Ing. Jan Fiedler, Dr.
This thesis deals with the design of a condensing steam turbine for a municipal waste incineration plant and its associated equipment. The steam turbine operates in two operating modes — winter mode, in which part of the steam is extracted via a regulated extraction to the base heater for heating water for the district heating system (DHS), and condensing mode, in which no heat is supplied to the DHS. In the introductory section, a heat balance diagram is developed for these operating modes with condensate recovery using two low-pressure heaters (LPH) and a feed tank (FT). Based on the heat balance diagram, a steam turbine design is developed, which includes the design of an A-wheel control stage and a stage section with reaction-type blade arrangement. Subsequently, the work is supplemented with calculations regarding strength criteria. The designed turbine operates at a speed of 5280min · s−1 and comprises a total of RS+17 stages divided into five cones. A control damper is located behind the third cone. For both operating modes, terminal power outputs were calculated, which are 18,64MW in condensing mode and 14,49MW in winter mode. The internal thermodynamic efficiency is 82,7% for condensing mode and 85,8% for winter mode. Finally, the operating characteristics were compiled and a conceptual cross-section of the turbine was created.
Condensing steam turbine, municipal waste incineration plant, thermal diagram, control stage, reaction-type blade design, strength calculation, sealing system, operating characteristics
Date of defence
10.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Student odprezentoval obsah své diplomové práce. Otázky oponenta byly zodpovězeny. V průběhu obhajoby byly položeny následující doplňující otázky. Pan Ing. Šnajdárek, Ph.D., se dotázal na to, co se musí kontrolovat u labyrintových ucpávek v případě mechanických vlastností, a jaké se používají typy těsnění u turbín. Otázka byla zodpovězena. Pan Ing. Sedlák se dotázal na důvod, proč je vyrovnávací píst zaveden do turbíny, a jaká je výhoda zvoleného zavedení. Otázka byla zodpovězena. Pan Ing. Sedlák se dále zeptal, proč je zahlcení ucpávek za vyrovnávacím pístem zobrazeno směrem ven. Otázka byla zodpovězena.
Language of thesis
Slovak
Faculty
Fakulta strojního inženýrství
Department
Energy Institute
Study programme
Power and Thermo-fluid Engineering (N-ETI-P)
Specialization
Power Engineering (ENI)
Composition of Committee
doc. Ing. Jan Fiedler, Dr. (předseda) Ing. Petr Kracík, Ph.D. (místopředseda) Ing. Ladislav Šnajdárek, Ph.D. (člen) Ing. Pavel Nešpor (člen) Ing. Pavel Sedlák (člen)
Supervisor’s reportIng. Petr Kracík, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportdoc. Ing. Jan Fiedler, Dr.
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová