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Legal aspects of alternative fuels' use in transport
Straka, Jakub ; Franková, Martina (advisor) ; Derlich, Stanislav (referee)
Legal aspects of alternative fuels' use in transport Abstract What connects solar energy, palm oil and the construction of the Nord Stream 2 gas pipeline? All these topics have one common denominator, i.e. alternative fuels. This group of fuels, which is represented by electricity, hydrogen or biomethane, has the ambition to replace fossil fuels and reduce the negative environmental effects of the sectors of the economy where fossil fuels are used - in transport and energy. This thesis focuses on the transport sector and pursues two lines. The first part of the text examines, by using the example of biofuels, natural gas and electricity, whether and to what extent alternative fuels fulfill the purpose of the alternative in relation to oil-based fuels. The principle of energy security and the principle of sustainable development in its environmental and economic aspects are used as a benchmark. In the second part, this thesis pays attention to legal instruments that determine the future of alternative fuels. Specifically, emission limits for passenger cars and light-duty vehicles and financial support for alternative fuels at all stages of their life cycle are analyzed. The purpose of this work is to capture the momentum of the ongoing legislative development in the field of alternative fuels, to try to...
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Gaseous fuels for SI engines
Přibyl, Zdeněk ; Czakó, Alexander (referee) ; Štětina, Josef (advisor)
In this bachelor thesis is processed a survey of alternative gaseous fuels for spark-ignition combustion engines. The properties and production, the most important components, infrastructure of service station of specific fuel are stated for these fuels. There are defined the advantages and disadvantages of each fuel. The comparison of CNG and diesel is made. The use of alternative gaseous in the future is outlined at the end of this bachelor thesis.
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Measurement and toxicity of combustion generated nanoparticles
Sikorová, Jitka ; Topinka, Jan (advisor) ; Klusoň, Petr (referee) ; Bláha, Luděk (referee)
This thesis is focused on nanoparticles produced by internal combustion engines utilized in vehicles. It deals with spatial distribution of nanoparticles within urban areas, impact of alternative fuels usage on particle production and toxicity, and a particle toxicological testing methodology. Monitoring of airborne nanoparticles identified traffic as the main source of airborne nanoparticles in places with heavy traffic load (Prague), as well as in a small city with only local traffic (Čelákovice). Most particles were likely emitted during short episodes of high emissions (e.g. uphill acceleration). During the measurements, high-emission vehicles responsible for a large fraction of the air pollution were also identified. On the other hand, small non-road internal combustion engines, which are not subject to any limit on particle emissions, such as a lawn mower, were operated during the measurement and generated a large number of nanoparticles. The amount and characteristics of the particles produced by combustion depend on the combustion technology and the fuel composition. A large part of the thesis deals with alternative fuels and their effects on the quantity of produced particles and toxicity of organic matter adsorbed on the particles. Hydrotreated vegetable oil (HVO) exhibited the lowest...
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Concept of the aircraft CNG engine
Šmerda, Ondřej ; Beran, Martin (referee) ; Svída, David (advisor)
Master’s thesis deals with comparsion and rating the compressed natural gas as an aircraft piston engine fuel. An information search of conventional fuels and differences of the fuel systems for AVGAS and CNG is included. Next part describes the aircraft and its engine on which is the mathematic model based. After that perfomance and consumption data are calculated for both fuels and the results are then compared. At the end of the thesis, a design of the CNG fuel system with components selection is described.
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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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Automotive fuels and their future in green transport
Mrázková, Kristýna ; Svída, David (referee) ; Beran, Martin (advisor)
This bachelor thesis deals with the problematic of currently most used automotive fuels and their impact on the environment. It briefly describes the development of combustion engines and provides an overview of most common automotive propulsions and their alternatives. The final chapter of the thesis deals with the problematics from socially political perspective.
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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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Ecologization of road transport
Češpivová, Andrea ; Rathouský, Bedřich (advisor) ; Mervart, Michal (referee)
This Bachelor's Thesis is concerned of emissions and their influence on the environment. First part of this Thesis is primary focused on various solutions for reduction of emissions. In this part are described legislative and technological arrangements. Another part talks about problems with fuels, about their advantages and disadvantages. In the final part is performed TOPSIS analysis. One of the main aims of this Bachelor's Thesis is to compare various types of fuels and analyze their environmental harmfulness.
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