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Test pressurizing equipment for U-pipes
Hrdlička, Milan ; Šnajdárek, Ladislav (referee) ; Svoboda, Pavel (advisor)
In this bachelor thesis I would like to introduce you to exchangers which use U-tubes and creating a functional pressurizing product. The product has to securely attach the tube and perform the pressure test of the medium. Its control has to be simple and easy. In the thesis I also focused on their constructional solution and possible improvements.
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High temperature coatings for gas turbine blades
Chýlek, Radomír ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
The purpose of this bachelor thesis is the overview of technology of high temperature coatings for gas turbine blades. The familiarization with properties of individual coatings, their capabilities to increase the blades durability and their resistance to damage and temperature influences are emphasized in this work. The potential of significant increase of gas turbines efficiency using different types of coating and cooling of the blades was evaluated in this thesis. Additionally the individual coating techniques are described and compared. Last but not least, this thesis contains closer description of the state-of-the-art thermal barrier coatings including the characteristics required for the following computing part. The computing part deals with calculation of heat transfer through the blade. The conclusion is dedicated to the future use of the coatings from the author's perspective.
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Thermoelectric cooler construction
Murgaš, Martin ; Šnajdárek, Ladislav (referee) ; Brázdil, Marian (advisor)
Bachelor thesis will concern description of Peltier modules and detailed description of thermoelectric phenomena’s on which is principle of these modules based on. Thermoelectric materials and their properties will be mentioned as well as different applications of Peltier modules. Heat losses of the cooler will be described. Onwards it describes mathematical model of Peltier modules and their coefficient of performance. Also mounting of modules, types of power supply and types of regulation are mentioned. Experimental part consists of calculation and designing of cooling assembly.
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Hydrogen production
Kunický, Ondřej ; Šnajdárek, Ladislav (referee) ; Poláčik, Ján (advisor)
Bachelor thesis deals with the production of hydrogen by electrolysis. The introductory part describes the basic properties of hydrogen, the possibilities of its storage and transport, hydrogen safety, the hydrogen economics, and the impact on the environment. Greater attention is then paid to the current possibilities of using hydrogen and its production from fossil and renewable sources. The next part of this thesis deals with possibilities of increasing the efficiency of electrolysis and the control of its performance. At the end, there is a practical measurement of electrolyser and a calculation of the efficiency of hydrogen production by electrolysis.
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Thermal biomass treatment
Křepela, Petr ; Šnajdárek, Ladislav (referee) ; Baláš, Marek (advisor)
The aim of this work is to provide an overview of biomass processing methods, description of final products and their practical application. Furthermore, a description of the technologies used for each method and the comparison of the efficiency. To achieve these goals, it is necessary to carry out a literature search and to produce a comprehensive set of meaningful information that is comprehensible to every reader, but does not hurt the professional public.
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The 4th generation of nuclear reactors
Mlčúch, Adam ; Šnajdárek, Ladislav (referee) ; Nerud, Pavel (advisor)
This thesis reviews the particular generations of nuclear reactors. The biggest part of the thesis focuses on the projects of the fourth generation reactors. The individual projects come out from the analysis of the international forum GIF. The last part is devoted to the detailed description of VHTR system and demonstration plant concept with reactor Antares.
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Metane hydrate extraction
Hanzlík, Martin ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
Thesis describes the chemical and physical properties of methane hydrate, the presence and location of sites in various types of sediment. Goal of this work is to evaluate the proposed production methods of methane hydrate from the technological, logistical and economic aspects. With the technologies currently available, the best production method is depressurization. There is a high probability that in the next decade it will be used for the production of natural gas from methane hydrate. The conclusion is evaluating areas with high potential for industrial production.
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Scale model of fuel rod for experiments critical heat flux
Kropáč, Ondřej ; Šnajdárek, Ladislav (referee) ; Suk, Ladislav (advisor)
Bachelor thesis deals with scale models for research of critical heat flux. Theoretical research part focusses on material of models their geometry heating methods and measurement of heat of already passed experiments. Practical part includes mathematical model of scale model used in device assembled at Faculty of Mechanical engineering BUT. Last section deals with surface temperture measurement and visualisation using thermography.
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Fine particles emitted from laboratory combustion tests
Hájek, Ondřej ; Šnajdárek, Ladislav (referee) ; Pospíšil, Jiří (advisor)
This bachelor thesis is aimed at fine particles emitted from laboratory combustion tests of biomass. The theoretical part of this thesis is about common features and usual ways of using biomass. After this broad chapter there is specifically described combustion and all its products including emission of gasses and fine particles. The main task of this thesis is about an experiment combining two analyses. First is the thermogravimetric analysis and the second is measuring size and number of fine particles in the range of 18 to 550 nanometers. The final chapter is about evaluation of measured results from 4 different spruce samples.
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