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Review of grease types
Mauer, Jindřich ; Ficza, Ildikó (referee) ; Košťál, David (advisor)
This bachelor thesis provides a basic distribution of greases according various aspects, which are used for lubrication the various components. The first part of bachelor thesis deals with the composition of greases. The following section describes the manufacture of greases. Another section includes the distribution of greases in terms of their composition. The following section is about distribution of greases in terms of practical use. The last part of the bachelor thesis deals with transmission electron microscopy, by this method is possible to examine the structure of greases.
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The use of fluid medium in forming technologies
Březina, Vít ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
This publication includes a research of currently used technologies with liquid as a forming or supporting medium. There is a description of methods of Hydroform, ASEA, Wheelon, Flexform, hydro-mechanical forming, Pillow hydroforming and groups of high-pressure, low pressure and pressure sequence hydroforming. The publication also includes analysis of the media used for lubrication of contact surfaces during the process of forming and operating fluids. The publication shows examples of companies which are using this technologies and samples of their products.
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Future Trends for Passenger Car Powertrains
Bureš, David ; Drápal, Lubomír (referee) ; Novotný, Pavel (advisor)
This bachelor thesis analyses existing and potential future propulsion technologies in passenger cars. Propulsion technologies are evaluated based on their efficiency, emissions, and amount of vibration. They are then compared with propulsion technologies in current use. Probability of usage from 2020 to 2040 is predicted for each evaluated technology.
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Economic analysis of family house costs
Mišúth, Marek ; Korytárová, Jana (referee) ; Výskala, Miloslav (advisor)
The main goal of the diploma thesis is to analyze the development of commodity prices affecting the prices of materials and to prove their impact on the materials. The monitored materials were selected to represent the widest possible range of the construction market. The final result of the work is the prediction of the price of reference object for the next five years.
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Fosil Fuels in Czech Republic
Ertelt, Tomáš ; Moskalík, Jiří (referee) ; Baláš, Marek (advisor)
The object of this bachelor thesis is to explore fossil fuels in the Czech Republic their kinds, qualities, occurrence, usage, extraction, import and export. Thesis focuses on black coal, brown coal, anthracite, lignite, peat, oil and natural gas. This thesis analyzes their availability, deposits, processing and usage in the Czech Republic. Production statistics of their extraction by 2011 are addend.
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Fosil Fuels in Europe
Zemánek, Josef ; Moskalík, Jiří (referee) ; Baláš, Marek (advisor)
Aim of this work is to explore facts about fossil fuels – their kinds, qualities, occurrences. It deals with black coal, brown coal, lignite, peat, oil and natural gas and covers their deposits and possible exploitation of fossil fuels in the Czech Republic. Production statistics from the year 2009 are added.
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Contribution to the Diagnosis of Power Oil Transformers
Šimková, Martina ; Poliak,, Ján (referee) ; Szabó, Radek (referee) ; Hammer, Miloš (advisor)
This dissertation thesis deals with the diagnotics of power oil transformer. It consists of the theoretical and practical part At its beginning, the theoretical part deals with an general description of the transformer and its connection. Focus is given to aspects of the life of the transformer insulation system (oilpaper). Further, the technical diagnostics is analyzed, with description of quantities of gasliquid chromatography, the oil condition and condition of conductor insulation. Another important part of the thesis consists of an expert system, which is described generally from the past to the present. Characteristics, types and structure of expert systems are mentioned here, with its advantages and disadvantages. The practical part starts with a description of the data file, which is further used in the thesis. Main practical part is divided into three parts - the results of gas-liguid chromatography, selected results and expert systems. In the section entitled "Results of gasliquid chromatography", there is an analysis of selected properties of time series and temperature dependency of gases. Moreover, the methods of the ratios of gases such as Duval Triangle method are described. The second part entitled "Selected other results" shows the time dependency of variables and the neutralization number, along with the breakdown voltage dependency, and time of dependency, gas and moisture content in insulating oils. There is also a temperature dependency of moisture content dissolved in insulating oil discussed, as well as results of selected correlations, such as the correlation values of gas chromatography with state variables insulation of wires. The last part, "Expert systems", provides specific information about developed expert system. It describes the environment chosen for its development, followed by a description, features and verification of the expert system. Examples of the consultation results are included. All achievements of the individual parts are always summarized at the end of each section. The thesis contains chapters "Objectives of the work" and "Conclusion". The most important chapter is "The contribution of the work." It contains original work results and the results applicable in industry.
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Hydrogen fuels
Tyagunova, Victoria ; Bébar, Ladislav (referee) ; Jícha, Jaroslav (advisor)
This thesis presents a basic review of production and use of hydrogen fuels. The main focus of this paper is the use of hydrogen in industry and power engineering. The first part concerns various industrial production technologies. The next section is dedicated to the description of hydrogen use for energy conservation, fuel cells, power plants and combustion engines. it includes the comparison of hydrogen and classic fuels. The final part focuses on the economy and costs of hydrogen production and use. This paper will evaluate hydrogen as a potencial fuel for future and will estimate it’s advantages and disadvantages in comparison with conventional fuels.
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