National Repository of Grey Literature 118 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Design of a gas turbine for heating plant
Lang, Filip ; Kracík, Petr (referee) ; Milčák, Pavel (advisor)
This bachelor thesis deals about design combustion turbine for heating plant. It include deciding of type combustion turbine and its calculation. The thesis consists of four main parts. The first part focuses on the analysis of gas turbine and principle of operation. The second part focuses on the requirements of a particular heating plant. The third part focuses on the selection of a suitable turbine from Siemens and last part contains the thermodynamic calculations of selected gas turbine.
Cryogenic Technique
Zrůst, Michael ; Milčák, Pavel (referee) ; Kracík, Petr (advisor)
Bachelor thesis deals with technology of cryogenic temperatures, liquefying gases in this temperature interval, effects of these temperatures on materials and insulations. In the introduction, brief history of development of this field. Next part is about gases which get liquefied in cryogenic temperatures and their applications. The largest chapter is chapter about liquefying in which principle of coolers, heat exchangers and liquefiers is described. Next, means of cooling by expansion, cooling cycles used to reach desired temperatures and ways of separating gas mixtures, are specified. In the last chapter insulation used to maintain cryogenic temperatures inside space is discussed.
Cold production and trigeneration
Jordanov, Alexandr ; Toman, Filip (referee) ; Kracík, Petr (advisor)
This bachelor’s thesis is recherché dealing with cool production. The aim of this thesis is present the main cooling system, their comparison, practical realisations, describe laws, which should cooling systems accomplish and assess influence on the environment. The first two chapters are about cogeneration and trigeneration. The main part of the thesis is focused on different methods of cooling, their advantages, disadvantages and their influence on the environment. Because of refrigerants in cooling systems, which have negative impact on health and environment, is part of the thesis dealing with law. At the conclusion of the bachelor thesis is the assessment of cooling systems and their forward-looking perspective present.
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.
Design of Helium liquefaction cycle
Bártová, Jana ; Kracík, Petr (referee) ; Hejčík, Jiří (advisor)
The present master thesis deals with the technologies for gas liquefaction focused on helium. The first part of the thesis contains a description of the history of liquefaction, production and usage of liquid helium, as well as the principles of liquefaction and cooling cycles. In the following part of the thesis is a detailed model of the liquefaction cycle for which radial-axial turbine wheels were designed. The last part of the thesis contains financial analysis of the suitability of using the expander with eddy current brake and the expander with an electric generator.
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.

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