National Repository of Grey Literature 193 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Aspekty elektromobility v podmínkách evropského trhu
Sedláček, Tomáš
The bachelor thesis deals with the issue of electric vehicles in Europe. In the practical part, the closer attention was focused on the level of use of electric vehicles in comparison with cars with internal combustion engines. Furthermore, the thesis focuses on the issue of the development of charging points infrastructure along with the number of newly registered EVs. The price development of specific vehicles in relation to the demand for these vehicles has not been neglected. Finally, proposals are outlined that can lead to an increase in the availability and use of electric vehicles.
Negative Implications of the Commodification of Externalities in Global Capitalism: Case of Waste Management
Jelenová Schultingová, Stanislava ; Střítecký, Vít (advisor) ; Tesař, Jakub (referee)
The decision problem faced by the consumer in a market economy is present with every purchase. The politics and policy of social and environmental sustainability of the agents selling in the market are still becoming more important when a consumer makes theirs decisions what to choose and buy. Waste management is a great part of this problematics. It is linked with every purchase we make, with all the things we use. Not just packaging, but the goods itself, the emissions behind the process of producing and transporting the goods (and services) - all of it can be now quantified and measured. In this thesis a Neo-marxist and environmentalist theoretical framework is elaborated with thoughts by Karl Polanyi to understand the problematics of waste management. When the gain is privatised, but the costs are inherently imposed on the public it is a good think to recognise the weak spots and try to evaluate and find a possible way for improvement. The following paper is designed as a case study of e-waste trading and tries to verify the hypothesis that the commodification of negative externalities such as waste brings along negative effects. These effects and impacts on society will be discussed further.
Predicting spark-ignition engine emissions
Jirout, Petr ; Böhm, Michael (referee) ; Štětina, Josef (advisor)
This diploma thesis deals with the possibility of predicting emissions of SI engines. The aim was to create an algorithm for predicting unburned hydrocarbons and carbon monoxide, based on ECU signals. The algorithm is based on practical experiments with SI engines. In the summary, the issues and the possible use of the created algorithm following the incorporation of EU7 are outlined.
Study of the difference between natural gas and hydrogen combustion
Winter, Josef ; Lisý, Martin (referee) ; Baláš, Marek (advisor)
This thesis deals with the combustion of natural gas with hydrogen in certain volumetric concentrations. The change in physical parameters due to the addition of hydrogen, which differs in its properties from natural gas, was studied. The thesis is divided into a research part, where the properties of natural gas and hydrogen are described, including a comparison with each other, the effects of gas properties on flame, emissions, or temperature. In the second part, a calculation for the fireplace with chosen dimensions was performed and the changes in physical properties due to the addition of hydrogen were observed and the findings are summarized, which will have to be considered in the design of the fireplace. All calculations are added to the appendices.
Alternative Fuels for CI-engines
Matoušek, Martin ; Řehák, Kamil (referee) ; Dundálek, Radim (advisor)
The topic of this bachelor thesis is alternative fuels applicable in diesel engines. First, a brief introduction to the diesel engine is given, then the individual alternative fuels are described. The most important findings about these fuels are summarized and a comparison with diesel fuel is made. Finally, each fuel is evaluated in terms of its advantages, disadvantages and applicability in practice.
Recycling modern cars
Borik, Matúš ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
Zem čelí nadmernému prekračovaniu recyklačných limitov organických a anorganických surovín, čo spôsobuje nedostatočnú absorpciu skleníkových plynov. Automobilový priemysel sa v posledných desaťročiach rapídne rozbehol a má na tom svoj podiel. Významný negatívny vplyv na rast výroby automobilov má ťažba zdrojov, ktorá prináša niekoľko environmentálnych problémov, ako je vyčerpanie zdrojov, neudržateľnosť životného prostredia, ktorá vedie ku globálnemu otepľovaniu, a zdravotné problémy spojené s ťažbou zdrojov a výrobou automobilov. Ak sa má udržať úroveň používania automobilov, hlavným riešením je zamerať sa na recykláciu a výrobu ekologických vozidiel. Výskum recyklačných metód moderných vozidiel a ich analýza je zameraním tejto bakalárskej práce, ktorej konkrétnym cieľom poskytnúť náhľad rôznych typov recyklačných postupov. Prvá časť sa zaoberá všeobecnými princípmi recyklácie a recykláciou vozidiel po častiach. Následne práca presúva svoju pozornosť na obnoviteľné zdroje a ich využitie v automobilovom priemysle (elektromobily) a recykláciu moderných automobilov vyradených z prevádzky. Posledná časť prináša bližší pohľad na možnosti skladovania energie z obnoviteľných zdrojov, špecificky na vodíka (H2), jeho využitie v palivových článkoch, recykláciu vodíkových automobilov a budúcnosť pohonu. Práca konzultovaná s expert inžinierom danej oblasti.
Gasoline Particulate Filters
Vyhnálek, David ; Řehák, Kamil (referee) ; Dundálek, Radim (advisor)
This bachelor thesis deals with gasoline particulate filters for spark ignition power trains and aims to summarize the current state of knowledge and prospects of this issue. The first part of the thesis focuses on gasoline direct injection technology as it is directly responsible for the increased formation of particulate matter, which is also subject of attention, including other pollutants. It also addresses the reason for the need of usage and further development of filters, the principle of operation and design options, including a description of the individual components. The thesis also discusses possible perspectives for the future development of turbocharged petrol engines with regards to meeting emission standards.
The use of nitrous oxide to increase the performance parameters of an SI engine
Dobeš, Tomáš ; Bazala, Jiří (referee) ; Beran, Martin (advisor)
This scientific article focuses on the use of nitrous oxide as an additive to fuel for improving the performance parameters of a spark-ignition engine. The results of experiments show that adding nitrous oxide to the fuel-air mixture can improve combustion and thus the performance of the engine. The benefits include increased power, reduced nitrogen oxide emissions, and improved combustion efficiency. However, it is also necessary to consider possible negative effects, such as increased nitrogen oxide formation at high temperatures. Overall, the use of nitrous oxide as an additive to fuel can bring significant improvements in the performance of a spark-ignition engine if used with caution and in accordance with relevant standards and guidelines
The development of energetics in the Czech Republic during the following years
Musil, Miloš ; Kracík, Petr (referee) ; Toman, Filip (advisor)
This thesis analyses the current Czech energy sector. It describes its current state and outlines possible scenarios of its development in future years in the context of the energy transformation. The thesis seeks to analyse the current situation of the energy sector in the country, assess its strengths and weaknesses and identify opportunities and threats for future development. The thesis describes the different parts of the Czech energy sector, such as the electricity, gas, heating and oil industries, including production sources, consumption and emissions. Most emphasis is given to the electricity sector. The capacities and potentials of the different sectors are analysed alongside the possible future scenarios outlined. Part of the thesis is also focused on describing and explaining the composition and construction of electricity and gas prices in the Czech Republic. Emphasis is also placed on placing the Czech energy sector in the broader context of the energy sectors of European countries and includes various scenarios for the development of the electricity sector in Europe. In the context of the current geopolitical situation in Europe and the modernisation and transformation of this sector, it is necessary to build new energy sources.
Coal burning as a source of mercury soil contamination
Paclíková, Karolína ; Vaňková, Maria (advisor) ; Mihaljevič, Martin (referee)
Mercury (Hg) is a global pollutant, released into the environment from both, anthropogenic and natural sources. The most significant Hg emission source is burning of fossil fuels, especially coal combustion (60%). Although Hg occurs in low concentration in coal, a large volume of coal combusted makes coaal-fired power plants ano of the largest source of Hg emission into the atmosphere and consequently to the environment. This bachelor thesis summarized the knowledge about the geochemistry of Hg in coal and soil. At the same time provides information on the distribution of Hg in soils in the Frýdlant district, area that has been affected by emissions from coal-fired power plants. The total Hg concentration in soils, coal and wastes (fly ash and bottom ash) from power plant Turów was determined by AMA-254. The concentration in the coal ranged between 217-973 µ Hg, the average concentration in fly ash was 94 µ Hg and the lowest concentration of Hg was in the bottom ash, 1-2 µ Hg. The average Hg concentration in soil organic horizons was 334 µ with the highest value 510 µ Hg. The obstained data were not consistent with previous study, where concentration of Hg in forest floor in Frýdlant district reached up to 1 148 µ . The Hg concentration in studied forest soils...

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