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Steam condensing turbine
Štěpánová, Lenka ; Krbek, Jaroslav (referee) ; Fiedler, Jan (advisor)
The aim of this Master’s thesis is to design a steam condensing turbine with three bleeds. First, a heat balance of the steam cycle is calculated, followed by thermodynamic and stress calculation of the turbine blading and design of a gland steam system and drain system. A price proposal is suggested for the given steam turbine. In the end, a design drawing of the steam turbine is constructed.
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Design of tidal turbine
Mahdal, Ondřej ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
The present time demands emission-free and carbon-free sources of energy. This fact is not only subject of international agreements and European Union regulations, but also the state of environment points out to an essential change in energy generation of mankind. Tidal stream provides very stable and predictable source of “green” energy. Compared to other renewable energy sources tidal stream turbines in exceptional localities are able to supply energy continuously, making them base load source. The aim of the thesis was to create an extensive document with recent tidal stream power information, which has not been available in Czech language yet. Last part of the research is focused on co-locating tidal stream and off-shore wind turbines. Second part of the thesis is dedicated to aerodynamic design of single-stage horizontal axis tidal stream turbine with rated electric power of 1 MW. Calculation according to the blade cascade theory was used to design blade geometry and to find rotor diameter of 14 meters for rated stream velocity of 3.05 m/s.
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Comparing grades axial steam turbines for various media
Staněk, Štěpán ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
Aim of the thesis is to design a single-stage axial steam turbine with impulse blading type for two different media with identical input parameters at input of stator and pressure behind the impeller. Calculation is made for water steam and organic fluid R134a. Main part of this thesis is termodynamic calculation and its optimalization in order to achieve maximum output and efficiency of the stage for both working fluids. At the end of the thesis an alternative calculation of impeller friction losses is presented.
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Condensing Steam Turbine with superheating
Urbánek, Martin ; Weber, Norbert (referee) ; Weber, Norbert (referee) ; Fiedler, Jan (advisor)
The thesis is focused on designing of condensing steam turbine with reheating for combustion of biomass. The turbine is developed to be tandem compound-regenerative with five uncontrolled extraction points. Optimization of reheating pressure is made in the turbine's cycle. The turbine outlet is constructed to lead down to the water cooled condenser. Thesis includes the calculation of heat cycle with the draft of flow channel of high pressure and middle-low pressure turbine. Detailed calculation of middle-low pressure turbine, including stress-strength analysis, is performed. The thesis provides an evaluation of flow scheme of 100 % and 75 % of generator’s power output and the drawing of middle-low pressure turbine in longitudinal section.
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Steam turbine
Pohořilský, Marek ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The master thesis deals design of condensing steam turbine in the heat scheme. The content of the thesis is divided into five parts. The first part describes the design and preliminary calculation of turbine heat balance in which the turbine is to be operated. The second part is dedicated to the preliminary design and detail calculation of control stage. The control stage is solved witch impulse blading. Next part describes the design of reaction blading type which is divided into 5 flow channels. This design is followed by the design of the last stage twisted blade geometry. Comparison of the efficiency results stage is made to the designated geometry of the last twisted blades and the preliminary design of the turbine stage, where the prismatic blade type was considered. Strength calculation is performed for the design of the last rotor blade and evaluated by Goodman and Langer criteria. The last part outlines evaluation of turbine design and technical background documentation of last stage blades is processed.
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Steam generator
Krčálová, Petra ; Tomáš, Zdeněk (referee) ; Fiedler, Jan (advisor)
Master thesis on topic steam generator deal with about improving the efficiency due to the use of combined cycle while producing electrical energy. The first part includes the possibility of using combustion engines in the energy sector and describes their advantages and disadvantages in the production of electricity. Further described is the use of the concept of a combustion engine in a combined cycle, and improving the efficiency of electricity through the use of waste heat boilers and steam turbines. The second part is design of the steam generator, which is connected behind the chosen combustion engine with power exceeding 10 MW. Whether this concept is profitable and competitive is in mentioned in the last chapter dealing with the return entry investment. In this chapter is compared several variants use and a demonstration of the impact of fuel prices on the profitability of this concept.
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Condensation Steam Turbine for Combi-cycle
Pavlíček, Martin ; Ing.Ondřej Štěpánek (referee) ; Fiedler, Jan (advisor)
This thesis named Cosdensing steam turbine in combi-cycle deals with the calculation of thermal balancing scheme and the design of turbine. This double body steam turbine with combined HP-IP part and double-flow LP part does not have any additional samples of technological steam. LP part has two side outputs to the water-cooled condensers. There is a basic calculation of force effects on the LP part at operation. The thesis also includes a drawing of a longitudinal cut of LP part and its layout, including positron of the condensers.
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Design of small jet engine to 1kN thrust
Gongol, Jakub ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
This work will be focused on issue of a jet engine. The thesis will be divided into search retrieval part and computational part. In the search retrieval part it will focus on different configurations of jet engines as well as areas of their use. The main part of the thesis will however focus on a calculations where a turbine, compressor and an exhaust nozzle will be designed in order to give a thrust of approximately 1kN. Next step will be determination of an engine charcteristic that will give us a preview on how the engine performance will look like in off-design modes.
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Modernization the Dukovany Nuclear Power Station
Kissler, Martin ; Martinec, Jiří (referee) ; Fiedler, Jan (advisor)
Thesis focuses on a detailed technical description of all important parts of secondary circuit in Dukovany power plant and its connection to other systems of power plant. In thesis are analyzed significant adjustments which have been made during the entire operation of power plant including in particular the actions associated with project called Utilization of project reserves of units EDU. In the main part of the thesis were carried out calculations of the power plant's power for states before and after the modernization and there is also analyzed the impact of individual changes on the whole power plant. These changes are with the entire secondary circuit drawn in the T-s diagram.
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Condensing Steam Turbine
Kracík, Petr ; Martinec, Jiří (referee) ; Fiedler, Jan (advisor)
Diploma thesis named Condensing steam turbine deals with heat scheme balancing computation of condensing steam turbine K55 and her design. This turbine with 5 unregulated take-offs and overpressure blading type, is computed with (c_a/u) method in the middle of blading diameter. Regulation degree is chosen with impulse blading and feet cross section is checked on durability. At the end of the thesis turbine consumption characteristic is derived from the zero output up to the nominal output. Integrated part of this thesis is conceptional design of longitudal turbine section.
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