National Repository of Grey Literature 234 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Steam Turbine for Biomass Power Plant
Doseděl, Jakub ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The aim of this diploma thesis is a design of a condensing steam turbine based on technical specification of inlet steam - maximal mass flow 120 t/h, temperature 440 °C; on temperature in deaerator 125 °C; on mass flow 0 – 60 t/h and pressure 3,0 bar(a) of regulated steam extraction and on ambient temperature in the vicinity 25 °C. The result contains steam turbine with reaction blading, work output 28,76 MWe and efficiency 82 %.
Steam Turbine for Compressor Drive
Beran, Petr ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The goal of this diploma thesis is design of steam turbine for driving a compressor with mechanical power of 25 MW, while using a standard API 612. In the first chapter of this work there is calculation of the steam mass flow about value of 23.17 kg/s, the next chapter deals with the design of control stage with the diameter of 0.715 m, inner power of 1673.6 kW and thermodynamic efficiency of 68 %. The following chapter includes thermodynamic calculation of stage part about power of 26.37 MW at designed rotation speed 5722.5 rpm which corresponds to 105 % of rated speed and thermodynamic efficiency 84 %. For control stage and stage part there is a strength calculation control. The thesis also includes basic design of gland sealing system, the design of balance piston with diameter of 0.543 m and the choosing of axial and radial bearings due to acting forces. The conclusion chapter deals with operating characteristic of designed steam turbine. The thesis includes mechanical drawing of turbine.
Steam Turbine for Compressor Drive
Čoupek, Filip ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The aim of the master's thesis is the design of a condensing steam turbine to drive a compressor with specified parameters. Firstly, the thermodynamic calculation of the flow channels is made, which are verified by strength control to meet the API 612 standard. Following, the calculation for the axial and radial bearings, on which the turbine is mounted, is described and the operating characteristic is developed. Finally, a construction drawing of the longitudinal section of the steam turbine is attached.
Condensing Steam Turbine C55
Borýsek, Václav ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
This diploma thesis deals with the design of a steam condensing turbine for intake steam of pressure 125 bar, temperature 540 °C and maximal intake of steam into the turbine 130 t/h. A thermal scheme is designed, including low-pressure and high-pressure regeneration, an air condenser, a feed tank and a boiler. Afterwards a thermodynamic design of a condensing turbine is made with an A-wheel type regulating stage and a stage part with reaction blades. The design of the blades is strength-tested. Then is made the design of the compensating piston and the sealing system. In the end the characteristics of the turbine for non-design steam flows is plotted. The designed turbine has a power of 34644 kW, has a thermodynamic efficiency of 85.1% and a reheat factor of 1.046.
Steam-gas turbine for energy storage
Staněk, Štěpán ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
Master thesis discusses the growing need of electric energy storage and its effectivity and capacity. It describes an overview of possible technologies with their advantages and disadvantages. Greater attention is paid to the storage of energy in gas, so-called Power to Gas, which combines the electrolytic production of hydrogen from water and the Sabatier reaction to produce synthetic methane. This technology is introduced in the so-called SIT Brno cycle of Siemens Industrial Turbomachinery company. The main part of the thesis is focused on the description of this cycle and on the calculation of the steam-gas turbine (high-pressure and low pressure module). This thesis describes the methodology of turbine calculation and the composition of the steam gas mixture after combustion of methane. The carbon dioxide formed by combustion in the steam-gas mixture generator was replaced by steam. Part of the diploma thesis are drawings of cross-section of individual turbine modules.
Thermodynamic Heat pump
Knebl, Viktor ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
This diploma thesis deals with the design of thermodynamic heat pump, used to utilize thermal energy of flue gases arised from the combustion of natural gas in a heat exchanger. The flow rates of the compader compressor, bypass compressor and turbine are calculated. Part of this thesis is simplified design of gearbox and economical evaluation of heat pump installation. The appendix of the thesis contains technical documentation.
Steam turbine vacuum breaker
Kalivodová, Markéta ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
In this master’s thesis, a preliminary thermodynamic calculation of the turbine is made. Then, the design and location of the vacuum breaker is devised for this turbine. The aim of the master’s thesis is to calculate a time needed to break the vacuum, ie to determine how long it takes to reach the atmospheric pressure inside the turbine and add-on devices. To verify and improve the accuracy of the calculation there are data measured on real projects used.
Steam turbine - pipeline design
Kotas, Jakub ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
The master thesis deals with the design, tracing and dimensioning of condensate pipeline. In the beginning, a preliminary calculation of heat balance is done. It is followed by a description of the main condensate system supplemented by the computational design of pipeline and the calculation of pressure losses in this pipeline. The crucial part of the thesis is the calculation of pressure losses, which is done in two ways. The first approach to calculation of pressure losses in the pipeline is calculated using values of representative resistance coefficient for pipe ele-ments using Idelchik literature and for individual types of valves using values from datasheets of Siemens Energy suppliers. In the second approach to calculation representative resistance coefficients for pipe elements and individual types of valves CRANE literature are used. Then both approaches of choosing representative resistance coefficients are compared and evaluated. Based on the calculated values, a suitable pump is selected at the end of the master thesis.
Steam turbine to drive the feed pump
Pavliska, Vojtěch ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
This diploma thesis performs a calculation of a steam turbine to drive a feed pump. The research part deals with the basic classification of steam turbines focusing on mechanical drive steam turbines. The second part of the thesis is a controlled extraction pressure optimization for achieving the maximum possible thermic efficiency of the cycle. The last part of the thesis shows a detailed thermodynamic calculation of the mechanical drive turbine along with the basic geometric parameters of the flow canal.
Steam Turbine for Pump Drive
Bureš, David ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The aim of this diploma thesis is the design of a condensing steam turbine to drive a pump with a mechanical power of 9 MW. Based on the parameters, a thermodynamic design of the flow channel is performed, including the strength control of the blades, taking into account the API 612 standard. To compensate for the forces arising during operation, a thrust bearing and radial bearings are designed. At the end of the computational part of work, the operational characteristics of the turbine are performed. The appendix contains an idea drawing, which shows a section of the turbine.

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