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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Parní turbína pro solární elektrárnu / Steam Turbine for Solar Power Station

Trávníček, Tomáš January 2015 (has links)
The aim of the master’s thesis is a design of double casing condensing steam turbine with gearbox, reheat and with power output 110 MW for solar power station. The steam turbine has an axial output to the air cooled condenser. The design of the turbine is developed on the basis of concept of Doosan Skoda Power company. It is the main reason this turbine has the impulse blading. There are heat calculation and calculation of heat balance diagram in the first part of the thesis. The system of regeneration consist of three Low Pressure Feedwater Heaters (L.P. FWH), deaerator, and two High Pressure Feedwater Heaters (H.P. FWH). The next part of the thesis is focused on a flow path section of turbine. There is a selection of profile of turbine blades at this part, too. The basic design and strength calculation are available only for high-speed high pressure (HP) part of turbine, as an assignment of the thesis says. There is heat balance diagram for 75 % of nominal power output at the end of thesis. The drawing of longitudinal section of HP part of turbine is the main appendix of this thesis.
142

Experimentální a výpočtové stanovení součinitelů přestupu tepla pro části průmyslové parní turbíny od firmy Siemens, s.r.o Odštěpný závod Industrial Turbomachinery / Experimental and Numerical Assessment of the Heat Transfer Coeficients for Industrial Steam Turbine for Siemens Industrial Turbomachinery

Hladík, Petr January 2015 (has links)
The subject of this diploma thesis is experimental and numerical assessment of the heat transfer coefficients during condensation of water steam in simplified parts of an industrial steam turbine. This simplified part is a pipe with circular cross section, which is often used in simulations of processes inside the steam turbine. The first part of thesis describes theoretical basics of heat transfer during conduction, convection and condensation. The content of other chapters is description of methods used to determine heat transfer coefficient. These are: ex-perimental analysis performed on a measuring device and evaluated using finite element ana-lysis (FEA), computational fluid dynamics analysis (CFD) in ANSYS CFX and analytical calculations of heat transfer coefficients using mathematical models for condensation. Thesis is concluded by validation and comparison of obtained results.
143

Roštový kotel s přirozenou cirkulací na spalování dřevní štěpky / Grate Boiler for Wood Chips Combustion

Kozák, Tomáš January 2015 (has links)
The thesis is dedicated to the design of the steam boiler which burns wood chips, with a natural circulation of the water. It is a grate boiler, which produces 20 t/h of the steam. The output parameters of the steam are 420 °C and 5 MPa. The feedwater temperature is 125 ° C .The thesis gradually deals with stoichiometric calculations and determines the efficiency of the boiler. Then it describes the design of the fireplace and thermal calculations of each heat transfer surfaces. The appendix includes drawings of the boiler.
144

Návrh nového typu obvodového závěsu pro lopatky parní turbíny / Proposal of a new type of steam turbine blade attachement

Vrbický, Jiří January 2015 (has links)
This thesis describes design of new circumferential blade attachment on last grade of steam turbine and following stress-strain analysis by FEM with static and cyclic loading. It was created two new design of geometry, which were created based on existing and operating constructional solution of oblique double T blade attachment. It was made stress-strain FEM analysis on original design of blades. Its results served to realize change of construction. Their target was increase load capacity and service life of new types of blade attachment.
145

Návrh parní turbíny a optimalizace přihřívacího tlaku páry / Steam Turbine design, Optimization steam reheat pressure

Štaffa, Petr January 2016 (has links)
The Diploma’s thesis deals with calculation of tree heat schemas with condensing steam turbine with uncontrolled steam extractions for regeneration – tree low pressure heaters, two high pressure heaters and a deaerator. Heat schemas are compared to each other according to reheat pressure. The most efficient schema is used to steam turbine thermodynamic design – design of control stage and blade stages. At the end of diploma thesis a stress analysis of the last rotor blade is made.
146

Kondenzační parní turbína pro pohon napájecího čerpadla / Feed Pump Condesing Steam Turbine

Uherek, Jan January 2016 (has links)
This diploma thesis focuses on designing impulse stage steam turbine to be used as the feed pump drive. I consecutively carried out thermodynamic calculation, seals and bearings layouts, with the aim to determine the steam mass flow through the turbine. Furthermore, I conducted turbine blade toughness check-ups, determined the rotor critical rotational speed, check-up rotor critical place (bearing pin) for torsion, and created a clutch screws design. The final part of this thesis pursues the other operating states of the turbine. This thesis is amended by a mechanical drawing of the turbine transection.
147

Návrh parního kotle / Design of Steam Boiler

Kadlec, Tomáš January 2016 (has links)
This thesis is focused on design of black coal combustion boiler of 160t/h output. It consists of several parts. First, stechiometric calculations and enthalpy of air and gas are made, then heat balance of boiler and the boiler losses are calculated, and also thermal efficiency is determined. In next step, the combustion chamber is designed and its thermal calculation is made. Then, each of heating surfaces are designed, and in the last step overall energy balance of the boiler is checked. The scheme of pressure system and design documentation added.
148

Návrh spalovenského kotle na spalování směsného komunálního odpadu / Design of steam boiler in waste to energy plant

Reiskup, Matěj January 2016 (has links)
The thesis deals with the design of the boiler to combustion of mixed communal waste. The introductory chapters present introduction of the problem, short explanation about fuel of the boiler and speciality of the boiler to combustion of mixed communal waste. The main part is the heat calculation of the boiler, which consists of stoichiometry of the combustion, heat losses, then disposition of heat performances to individual exchange surfaces. In the end is summary of calculation and knowledge consequent of the calculation.
149

Kondenzační parní turbína / Condensing Steam Turbine

Šrůtek, Petr January 2016 (has links)
The theme of master's thesis is the design of condensing steam turbine with three unregulated steam outputs. The steam parameters in individual outputs are dealt with in heat balance circulation. This chapter is followed by thermodynamic and strength calculations, including the calculation of the turbine gland steam and design of drainage. Structural design of the turbine is also included in this thesis.
150

Revize parní turbíny a návrh oprav / Revision of steam turbines and repair design

Grepl, Martin January 2017 (has links)
The theme of this master thesis is the revision and repair design of the condensing steam turbine SST 600 in Bielsko-Biala. The thesis deals with the revision of the steam turbine and the repair design of the damaged parts, the overall analysis of the separation of the steam of the split plane and the calculation of the parameters for tightening the new screws. The master thesis is given for a specific case. The introductory part of the master thesis deals with a basic description of the repaired steam turbine. Subsequently, a review of individual disassembled parts is given and the scope of the repairs is stated. In the next part of this thesis are summarized the causes of the steam leakage of the dividing plane at the points of the cross section and in the area of the control stage. The last part deals with the sealing problem of the split plane and the related main part of the master thesis is the calculation of the tightening parameters of bolts in the turbine housing. Another aim of the master thesis is to create drawings of the lightening of the split plane on turbine house.

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