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Alternative Fuel Engines
Mišelnický, Lukáš ; Svída, David (referee) ; Dundálek, Radim (advisor)
Bachelor thesis describes the engines to alternative fuels. There are presented different types of fuel properties and engine modifications so that the fuel can burn. In conclusion, the overall assessment of the prospects for future development
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Fuel for internal combustion engines
Vrbický, Jiří ; Jedelský, Jan (referee) ; Štětina, Josef (advisor)
This thesis is concerned with basic features of fuels for internal consumption engines, especially their influence on thermal efficiency. It also introduces dividing of fuels and their compare in ecologic, economic and technologic side. It is concerned convectional fuels (gasoline, diesel oil) and alternative fuels (nature gas, bottled gas, hydrogen, biodiesel, biogas, methanol and ethanol).
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Alternative fuel for internal combustion engines for commercial vehicles
Snášel, Pavel ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
The liquid petroleum fuels, gasoline and diesel, have gradually enforced during the development of thermal machines. Because these fuels are non-renewable and their usage is joined with many ecological and economical problems, we face the task how to replace these dominating fuels. The purpose of this thesis is to summarize and compare the properties of alternative fuels, especially their heating value, and sketch the supposed progress of their usage in transportation.
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Economical, operational and environmental comparison of Scania trucks using different types of fuels
Turek, Lukáš ; Novák, Radek (advisor) ; Koubek, Ondřej (referee)
This master work deals with different fuels for trucks Scania and it is divided into theoretical and practical parts. The theoretical part describes the basic concepts related to the topic. The most important are associated with transport and transportation, categorization and types of vehicles, greening road transport or financing. Depending on the practical part it is also place great emphasis on selected types of fuels, their production and also their advantages and disadvantages. In the practical part is introduced Scania company and the products and services that the company offers. Furthermore, this section generally analyzes Scania offer of engines for different types of fuels, including technical recommendations. At the end of the practical part are described specific vehicles, which are compared from financial aspect, in terms of environmental impact and operational limitations. The aim of the study is to compare Scania trucks using diesel, biodiesel and CNG.
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Biomass as a basic raw material for the production of fuels and energy
JUNGA, Jan
The bachelor thesis deals with the production, distribution and significance of motor fuels from biomass. From a brief summary of some very basic, but also most biofuels to those currently in the unused but potentially significant. Assessment of the advantages and disadvantages of biomass fuels compared to fossil fuels and biofuels characteristic of the first, second and third generation. This paper presents a summary of findings Czech and foreign experts over the last few years.
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Sorghum as the energy crop
CIBULKOVÁ, Renata
Sorghum, one of the world's major cereals, is the most commonly used for food or fodder. The aim of this Bachelor thesis is in a form of literary review to summarize information about the properties of sorghum in view of energy use, energy yields, the cultivation technology for energy purposes, the possibilities of using sorghum for energy purposes and the situation in the world and the Czech Republic. Recently sorghum has been tested as a raw material for all branches of the energy industry because of the wide range of potential products such as ethanol, hydrogen, methane, lipids, acetone, butanol and lactic acid. Sorghum can be used as biofuels due to the relatively high yields of phytomass. Utilization of individual species of sorghum depends on their chemical composition that can be significantly influenced by climatic conditions and way of cultivation. Crops improvement plays an important role for increasing production and utilization of this cereal in all climatic conditions.
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Commercial and economic comparison of traditional and alternative fuels
Dvořáková, Monika ; Sedláček, Jiří (advisor) ; Kočan, Jakub (referee)
Negative predictions about oil stocks combined with the instability in the Middle East encourage development of alternative fuels, which would reduce dependence of the world's economies on oil. The oil and petroleum derivatives are the main dependencies for vehicular traffic, which contributes to the greenhouse gas emissions by a large part. It is therefore necessary to focus on trying to reduce the fuel consumption of cars used for personal transportation. One way to achieve this goal is, for example, to convert existing cars to run on biofuels, buying a hybrid or an electronic vehicle, or, hopefully soon, hydrogen-powered automobile. Obstacles preventing a wider deployment of such fuels and drive systems are often higher purchase and operating costs. These economic disadvantages are being gradually reduced though, and in the future we can surely expect an increase in the number of alternative vehicles on the roads.
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Energy use of phytomass in the South Bohemia Region
NEJEDLÁ, Alice
This bachelor thesis focuses on energetic use of phytomass in the Southern Bohemia. There was identified real and potential production of biomass in the Czech Republic and in the Southern Bohemia. According to the information acquired from literature, internet and questionnairy research there was identified volume of use of energetic sources and biomass deliberately cultivated in Southern Bohemia for energetic use. The results of this research show that Czech Republic meets the commitment to cover 6% of energetic consumption by renewable energy source ? it even reached 8%. Southern Bohemia produces 4,5% of all renewable energy sources of the Czech republic. The research shows that there is a lack of biomass in the Czech Republic, that is why it must be produced by growing energy crops (PEP) and fast growing woods (RRD). Energy crops produces in the Czech Republic are: Sorrel Feed, Miscanthus Chinese, Knotweed, Reed Canary Grass, Hemp, Sorghum. As fast growing woods there are willows and poplars recommended. The most of the renewable energy sources in Southern Bohemia is represented by biomass and its combustion. Its potential is huge, mostly the waste of wood processing ? sawdust and wooden chips, is the most used fuel. Energetic use of biomass has a good perspective in Southern Bohemia. There is still unused waste from logging and straw in agricultural production. There is still hidden potential in growing energy crops and fast growing woods. The development is defended especially by economic reasons and state financial support.
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