|
|
Fuel additives for modern internal combustion engines
Mach, Petr ; Kaplan, Zdeněk (referee) ; Píštěk, Václav (advisor)
This bachelor thesis is devoted to thorough research of fuel additives, especially their effect on deposits in internal combustion engines, wear and service life of the engines and their effect on fuel consumption. The first chapter briefly informs about automotive fuels and explains the used terms in this work. The next chapter describes the types of fuel additives and their use. The third chapter deals with the deposits in the internal combustion engines and their reduction using detergent additives. The fourth chapter focuses on the types of wear and places where arise. This chapter also aims to prove the positive effect of additives on the engine components service life. The last chapter focuses on the fuel consumption and importance of additives in world fuel consumption.
|
|
|
Analysis of flue gas in automatic domestic boilers for agropelet
Minář, Marek ; Lisý, Martin (referee) ; Jecha, David (advisor)
The objective of the presented bachelor thesis is flue gas analysis during combustion of agropellets in automatic household boilers. Emphasis is placed on the description of biomass as a fuel, the ways of using biomass for energy purposes, alterations of biomass, production and properties of alternative pellets, automatic boilers and burners for combustion of specific fuel types. The end of the theoretical part is focused on standards and regulations for boiler operation. The practical part verifies the formation of emission on small sources of pollution and determines the concentration of solid and gaseous pollutants. The end of the practical part pursues with comparison of results with legislative requirements and calculation of boiler efficiency.
|
|
|
Estimating the Relationship between Food, Fuel and Biofuel Prices
Novotný, Matěj ; Janda, Karel (advisor) ; Khymych, Olha (referee)
Although biofuels have drawn the attention of researchers since its boom, which took place 20 years ago, doubts about benefits which their usage brings in the academic debate. This thesis joins the debate that discusses the impact of biofuels on food prices. The prices of 38 commodities and assets that are related to the biofuels are examined under Minimum Spanning Tree and Hierarchical Tree methods over the years between 2003-2019. The time span is divided into 4 periods, that responds to the development of world food prices. The results show that the relationship between biofuels and their feedstock depends on the overall level of food prices. In the case of higher food prices, the link between feedstock and biofuel is stronger and therefore the price transmission is more likely to happen. With lower food prices, this link is significantly weaker. Furthermore, the development of world food prices does not follow the trend of increasing biofuels production as food prices have become stable in recent periods. Therefore, this thesis does not support the claim that biofuels cause higher prices of food. Keywords biofuels, ethanol, biodiesel, transportation, food price transmission, Minimum Spanning Tree, Hierarchical Tree 1
|
|
| |
|
|
Does the Shale Gas Revolution Mean the End of Biofuels?
Kouřílek, Jakub ; Janda, Karel (advisor) ; Luňáčková, Petra (referee)
World effort to reduce climate changes drives demand for more environmen- tally friendly alternative fuels, since transport emits quarter of total green- house gas emissions. For many years biofuels were main mean for achieving more green transport. Nevertheless, there are rising concerns that some of biofuels have negative environmental and social impacts sometimes worse than fossil fuels. This work links European Union's biofuels development with expansion of natural gas caused by exploitation from shale formations. We examine relationship between biodiesel, natural gas and relevant com- modities by using the price transmission framework. Results indicate weak slowly increasing negative price relation between biodiesel and natural gas. Our work finds favourable legislation for future application of natural gas vehicles. Nonetheless, we conclude that the expansion will not be driven by exploitation of shale gas at European Union territory. 1
|
|
|
Modern Technologies for Family House Heating
Vidlák, David ; Brázdil, Marian (referee) ; Lisý, Martin (advisor)
The aim of this bachelor´s thesis is to outline the basic knowledge of modern heating methods of family houses. The first part of this thesis describes the history of heating and gives a basic information about heating systems. The second part is dealing with the most frequently used heating systems. The last part of the thesis evaluates the way of heating a particular family house and suggests the possibility of using different heating methods.
|
|
|
Optimation and Innovation of Family Houses Heating
Dubnický, Ladislav ; Špiláček, Michal (referee) ; Lisý, Martin (advisor)
The aim of this bachelor thesis is to make a summary of knowledge of today´s modern heating systems for family houses. Each types of systems are compared to each other from economic, operating and ecologic point of view. At the end of the thesis there is a model conversion of energetic costs for specific family house and projection of new heating system.
|
|
|
Vehicles with CNG drive units
Otipka, Václav ; Svída, David (referee) ; Píštěk, Václav (advisor)
The bachelor’s thesis is devoted to vehicles with CNG drive units. The introductory part focuses on the analysis of fuels that are used for propulsion of piston combustion engines. Not only the very expanded fuels but also unique fuels are analysed. The main part of the thesis describes the construction of mass-produced vehicles powered by natural gas. There are analysed the individual function elements of the vehicle which are different from common vehicles on conventional fuels. Part of the thesis is about CNG vehicle operation including ecological and safety impacts. The whole thesis concludes the current offer of cars on the domestic market.
|
|
|
Business Plan for Petrol Station
Zatloukalová, Nikola ; Netopil, Tomáš (referee) ; Koleňák, Jiří (advisor)
The main goal of this thesis is to create business plan for the establishment of the petrol station operating as BENZINA franchise. Entrepreneurship, requirements of the business plan, franchising and definition of used analysis are described in the theoretical part. Necessary analyses are performed in the analytical part. Suggested business plan and schedule of its implementation are described in the last part of this thesis.
|
|
|
Analysis of ash from fireplace
Drápela, Jakub ; Špiláček, Michal (referee) ; Hrnčířová, Michaela (advisor)
This bachelor thesis should familiarize readers with the size of analysis of ashes of fireplace inset. The work is posssible to divide into two parts, when the first one is devoted to a description of fireplace insets, fuels and subsequent processes during burning in fireplace insets and to individual methods used for size analysis of particles.The other part is focused on practical measurements of individual samples of ashes and subsequent evaluation.
|
guest ::
