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Combi -cycle with Diesel Engine and Steam Turbine
Bouše, Richard ; Kubiš, Richard (referee) ; Fiedler, Jan (advisor)
This master’s thesis deals with the possibility of increasing efficiency of energy blocks with combustion engines by the combination of the Sabat and Clausius-Rankine cycle into the combined cycle. In the thesis is briefly described the principle of the function of the auxiliary device, which can increase the efficiency of the combustion engine. This device, which consists of a waste heat boiler and two turbine modules, is designed using calculations. Both turbine modules are prepared with drawing documentation and there are described important structural elements. Each key part of the thesis is given by a brief theory, so the basic theory of combustion engines, waste heat boilers and steam turbine are described.
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Condensing Steam Turbine
Víšková, Jaroslava ; Ing.Václav Urbánek (referee) ; Fiedler, Jan (advisor)
The theme of this master thesis is one body steam turbine of 150MW with reheat. There is calculated heat balance of the system with three low pressure heaters, deaerator and two high pressure heaters. Next part deals with calculation of blades and its lenght. Next are the attachments of blades into stator and rotor parts of the turbine. By the end of the thesis there is recalculation of heat balance scheme and blading followed by calculation of parameters for operation of turbine in 75% and 50% of the rated power output. The output of the whole thesis is drawing of horizontal cut of the turbine.
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Daily launches steam turbines and their impact on the life of the turbine
Štěpánová, Lenka ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
This thesis concentrates on the problem of steam turbines, which require daily cycling by reason of an unstable nature of the energy source. The first part focuses on the current trends which have caused still increasing demand for steam turbines designed for every day start-ups. There is a description of the steam turbine start-up procedure and the heat transfer theory thanks to which the list of the critical parts of the steam turbine has been selected and with respect to these critical points has been created the draft of technical measures for the turbine. The thesis is finished with an evaluation of the life of the steam turbine casing as one of the critical parts and with a proposal for a calculation of a start-up time of the steam turbine.
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Condensing steam turbine
Šikula, František ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
The topic of this thesis is a project of condensing steam turbine, which uses as an energy source heat waste from high output combustion engines. In the first part of the thesis, there is a general overview of different types of combustion engines and their thermodynamic cycles. There are also explained important features, which are essential for running of combustion engines. In the second part, there is a theoretical explanation of steam turbine. The main part of the thesis is a project of condensing steam turbine with an integrated gearbox. At first there are chosen basic conceptions, which influence the project; then there is calculated an algorithm for thermodynamic calculation for each turbine module. At the end, there is conducted a simplified calculation of a gearbox and there is also a calculation of payback period of the designed steam turbine. There are made drawings, which are all base on the previous calculations. There are drawings of sectional views of each unit and there is also a drawing of construction arrangement of steam turbine with a generator.
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Steam turbine for steam-gas block
Kober, Ondřej ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
This master’s thesis deals with the design of two variants of a condensing steam turbine for a steam-gas unit. In the first variant, steam bleeding from the turbine for low-pressure regeneration is considered, in the second variant heat regeneration would be provided by a heat recovery steam generator, which is not the subject of the master’s thesis. Three unregulated steam extractions for the deaerator and two low-pressure heaters are considered for the turbine with steam bleeding. Both turbines were designed with an impulse governing stage and a reaction blading. The result of the design of bleeding variant is a turbine with a speed of 7000 min-1 with 7 cones, 33 stages with power output of 13,69 MW and an efficiency of 81,83%. The turbine without bleeding has a speed of 6500 min-1, 7 cones, 38 degrees, power output of 14,13 MW and an efficiency of 81,97%. The consumption characteristics are given for both turbines at the end. For the steam bleeding turbine, a drawing of the turbine section is attached to the thesis.
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Type design and flowchart of a steam turbine for a specific location
Kalina, Leoš ; Pospíšil, Jiří (referee) ; Škorpík, Jiří (advisor)
This master's thesis is deals with type designing and implementing the steam turbine to the machine part of heat plant in reconstruction. The thesis consists of two parts. First part is theoretical explanation of the heating industry, steam turbines, thermal cycles and components of thermal power plants. Second part of the thesis describes the design and calculation of thermal diagrams based on turbine parameters, which were provided from Tenza, a.s. tender. There is a simplified calculation of technical-economic study in the conclusion of the thesis. The thesis output is recommendation of single final implementation solution for customer.
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Cogeneration in units for thermal processing of biomass and waste
Uhmann, Petr ; Šomplák, Radovan (referee) ; Pavlas, Martin (advisor)
The diploma thesis deals with the cogeneration in units for thermal processing of biomass and waste. The theoretical part deals with the description of biomass and waste and energy recovery from these sources. In theoretical part is also focused on cogeneration and description of computational models of steam turbines. The practical part is focused on a specific calculation of the three steam turbines and comparison of computational models. On the base of the results is designed implementation of computational models to the simulation software W2E.
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Steam Turbine for Biomass Power Plant
Ingr, Adam ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
This master‘s thesis deals with thermodynamic calculation of condensing steam turbine with controlled extraction point for heat exchanger, into biomass power plant block. Rated output of steam turbine is 6.5 MW and rated output of heat exchanger is 4.5 MW. At the beginning of the thesis is explained the heat scheme and the effect of heat regeneration on the design of turbine. Attention was also paid to the heat equation of individual thermal diagram devices and the calculation of the steam mass flow rate. The next part is focused on thermodynamic calculation of the turbine, followed by mechanical stress calculations. The calculation is divided into preliminary design and detailed calculation. At the end, the performance analysis of the designed turbine is made.
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The use of Steam Turbines
Saňka, Marek ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
This bachelor thesis deals with the use of steam turbines as a part of the power station. The theoretical part focuses on the history, basic informations about steam turbines, as well as facts of the operation and allocation of steam turbines by various criteria. The theoretical part also includes description of the most common construction design. In the practical part is described the concrete power station and is made basic calculation of heat balance.
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