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Analýza provozu technologické linky vyroby tuhého alternativního paliva
Ciencialová, Tereza
This bachelor thesis is elaborated on the topic Analysis of Solid Alternative Fuel Production Line. The first part is devoted to legislation that is applied in waste management both in accordance with the European Union and the Czech Republic. The second part deals with the description of the solid alternative fuel production line which I analyze. The emphasis in the analysis is put on the description of buildings, technical and technological equipment and performance characteristics. In the conclusion I am investigating possible improvement of existing state of the production line and comparison of the old and new line.
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Technicko-ekonomické parametry vozidla s pohonem na zemní plyn
Vrastyák, Jakub
This thesis has been prepared on the topic Technical - economic parameters of vehicles using natural gas. The theoretical part of the thesis deals with the various types of alternative fuels in the technical, economic and environmental factors. The practical part is devoted to the measurement of performance and emission parameters of the engine.
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Vliv teploty na viskozitu a hustotu leteckého paliva
Benda, Alexander
The theoretical part of the diploma thesis on "Influence of temperature on the viscosity and density of aviation fuel" deals with the description of fuels used in aviation, also focuses on alternative fuels in aviation and describes aircraft engines. Furthermore, the characteristics of density, dynamic and kinematic viscosity are presented in this part of the work and the devices and methods of how these quantities are measured are described. The experimental part of the diploma thesis is devoted to the measurement of the temperature dependence of density and viscosity in selected samples. The measurement results are processed into clear tables, supplemented by individual graphs interspersed with suitable approximation functions.
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Innovations in the transport industry
Kremiec, Tomáš ; Rujbrová, Šárka (referee) ; Jašková, Jana (advisor)
Tato bakalářská práce se zabývá vývojem inovací v silniční, železniční a letecké dopravě. Jedná se o běžné dopravní prostředky, u kterých lze očekává další technologický vývoj, ať už v osobní nebo nákladní dopravě. Cílem této práce je nastudovat historický vývoj v jednotlivých odvětvích a následně se zabývat aktuálními tématy týkajícími se implementace umělé inteligence a řešení problematiky životního prostředí. Každý ze způsobů dopravy přispívá k širší komplexnosti dopravní scény tím, že poskytuje různý soubor výhod a obtíží. Provoz v našem stále více propojeném světě tyto dopravní prostředky společně usnadňují a vytvářejí tak dynamický a propojený systém. Praktická část práce dále důkladněji sleduje vývoj některých z klíčových prvků dopravy. Těmi jsou v tomto případě návěstidla a návěstní opakovače. Obě zařízení představují nedílnou součást železniční dopravy. Tomuto vývoji se věnuje tato práce, která si klade za cíl prostudovat přínosy inovací jednotlivých generací a problematiky spojené se zařazením do provozu.
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Synthetic and alternative fuels for internal combustion engines
Kromp, Miloš ; Zeizinger, Lukáš (referee) ; Böhm, Michael (advisor)
The bachelor’s thesis focuses on synthetic and alternative fuels for combustion engines. Types of fuels, production and distribution processes, and their impact on combustion and engine performance are examined. The work also analyzes the impacts of these fuels on CO2 emissions. An innovative part is the usage of a simulation model of the engine, which allows comparison of performance parameters and emissions when using different types of fuels. This method brings new possibilities for optimizing the use of alternative fuels.
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Energy yields per one hectare of land in the South Moravian Region
Plášek, Tomáš ; Bayer, Robert (referee) ; Jandová, Kristýna (advisor)
This bachelor thesis compares methods of producing elektricity in biogas plant, in thermal power plants by burning biomass, in solar power plants and compares it with production of energy of fuel cells and the energy from biofuels, like biodiesel and bioethanol. It compares the energy yields of different energy production methods and evaluates their advantages and disadvantages. It compares the energy content of these fuels by model vehicle range.
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Portland Cement for Road Construction
Vlachovský, David ; Gemrich, Jan (referee) ; Fridrichová, Marcela (advisor)
The field of this diploma thesis is characteristic of cement used in road infrastructure building. In cooperation with the cement plant Horné Srnie, was made previously produced road cement matrix, according to the original recipe. This Diploma thesis is focused on the following characteristics of the cement: the compressive strength, the stiffening process, the volume stability and the development of the hydration heat. The research of the hydration process was analyzed by X-ray diffraction and differential thermal analysis
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Influence of Inert Gases on Characteristic Parameters of Combustion Process
Hudák, Igor ; Jegla, Zdeněk (referee) ; Odstrčil, Miloslav (referee) ; Hájek, Jiří (advisor)
The dissertation thesis is focused on the investigation of the influence of inert gases on characteristic parameters of the combustion process. Inert gases are usually standard components of alternative gaseous fuels such as the producer gas, coal gas or biogas. For a long period some of the fuels were considered as waste gases and their potential was not sufficiently utilised. Compared with noble fuels such as natural gas, alternative fuels have different physical-chemical properties. For example, their lower heating value (LHV) can be lower even than 10 MJ/mN3. The composition of the alternative gaseous fuels can be various during their production process. Lower LHV is a result of the occurrence of inert gases that does not take a part in the combustion reactions. Inert gases have the ability to accumulate the heat. Under certain conditions it is possible to combust alternative fuels on conventional burners, but due to their different properties, problems can occur during the combustion. E.g. to achieve the same heat output as with the noble fuel, it is necessary to burn bigger volume of the alternative fuel. However, the limiting factor could be the burner's head geometry. Theoretical introduction of the thesis summarizes research results in the field of low calorific gaseous fuels combustion and the addition of inert gases into the noble fuels. The thesis also describes the mechanisms of the NOx formation and summarizes techniques which can be used to reduce NOx formation. Furthermore, fuels from alternative sources are categorized and described, including their composition and characteristics. Their physical-chemical properties were obtained by means of the combustion simulation carried out in the simulation software. Two devices had to be designed and manufactured to fulfil goals of the dissertation thesis. The first is a gas mixing station capable of mixing 4 different components. The second device is a burner utilized for the combustion of low calorific fuels. The key section of this thesis is a chapter describing the experimental plan, the performance and the evaluation of the experiments. The goal of the experiments was to dilute the natural gas by two inert gases, namely carbon dioxide and nitrogen. The lowest LHV value achieved during the experiment was 10,7 MJ/mN3. The influence of the inert gases on the NOx emissions, the flame stability and characteristics, the flue gas temperature, the in-flame temperatures, the heat flux and the thermal efficiency was investigated and evaluated. Each parameter was measured and evaluated for three different burners: the burner with the staged gas, the burner with the staged air and the burner for low calorific fuels. Generally, after the addition of the inert gas into the noble fuel, the in-flame temperatures decreased. As a consequence, the NOx emissions decreased as well. The effects of carbon dioxide on the investigated combustion parameters were more substantial than the effects of nitrogen. Each measured parameter is strongly dependent on the burner geometry. The experiments revealed that in most cases the addition of the inert gas into the fuel influenced the flame length (flame shortened) and also more heat was transfered into the chamber's walls closer to the burner tile.
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