|
|
Fuel cells and their use
Horák, Stanislav ; Klimeš, Lubomír (referee) ; Štětina, Josef (advisor)
This bachelor’s thesis deals with background research of fuel cells and their use. The first part of this thesis is familiar with the basic principle and fuel cell constructions, as well as the types of fuel cells, with which we meet today. Another part deals with the thermodynamic calculation of the fuel cell including the production of hydrogen. At the end of the thesis are taken into account the advantages and disadvantages of the fuel cells and examples of their use.
|
|
|
Alternative fuels for internal combustion engines
Žídek, Tomáš ; Maršálek, Ondřej (referee) ; Píštěk, Václav (advisor)
In this bachelor thesis is processed a survey of the alternative fuels for the spark-ignition combustion engines. The properties and the production, the most important components, infrastructure of service station and representatives of the vehicles powered by the type of specific fuel are stated for these fuels. There are defined the benefits and disadvantages of alternative fuels. The properties and parameters are critically evaluated for individual fuel. The use of alternative fuels in the future is outlined at the end of this thesis.
|
|
|
Hybrid drives of city buses
Hodas, David ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
Bachelor’s thesis deals with an integration of hybrid buses in a public transport. It evaluates their environmental impact and possibilities of an application in traffic. Types of hybrid drives, system components and their interaction could be found here. It is focused on current status and chances of future development. In the final part there are economical aspects connected with bus transport.
|
|
|
Hydrogen: energy storage for the future
Studýnka, Radim ; Škvařil, Jan (referee) ; Martinec, Jiří (advisor)
The aim of this work was to characterize the hydrogen as energy reservoir, to characterize the ways of its storage, to describe its position in possible future scheme of energy sources and to name energy sources, which can be used to produce it. Another objective was the characterization of the current state of the used energy sources. In the opening part is described the current state of energy sources, the characterisation of the hydrogen follows together with description of its possible future status. In the next parts are described production, storage and use of hydrogen. In the near future can be expected, that the hydrogen will be produced from fossil fuels at the beginning, especially due to their availability, and they could be replaced after some time by alternative sources of energy. One of these sources could be nuclear power. Storage of hydrogen in the liquid and gaseous state is currently the most widely method especially due to relatively well known technology. Metal hydrides and porous materials could become common storage medium of the hydrogen in the case of mastering their technology. The hydrogen can be used in stationary applications for cogeneration units, which produce heat and electricity. It can be also used in mobile applications for drive vehicles, which use hydrogen engines or hydrogen fuel cells.
|
|
| |
|
|
Nonconventional Utilisation of Wind Energy
Zajíc, Josef ; Turek, Vojtěch (referee) ; Jícha, Jaroslav (advisor)
The thesis considers utilization of the wind energy as source of energy for the production of hydrogen. In the first part, there is described the types of wind engine specialized especially on screw wind engines and their construction. After that follows the description of dilemmas usage of electric energy addicted in time and with it connected problems with accumulation elektricity by the help of various methods. The final part of the thesis is than addicted to statistic evaluation of wind conditions, description and suggestion of the equipment hydrogen management.
|
|
|
Fuel cells
Ralbovský, Peter ; Škvařil, Jan (referee) ; Chroboczek, Libor (advisor)
This bachalor’s thesis deals with a fuel cells technology, their principle and division. There’s also describes how to obtain hydrogen from natural gas as fuel. Furthermore, there are advantages and disadvantages of fuel cells. At the end of the work there are applications of fuel cells and their use in cogeneration and trigeneration.
|
|
|
Hydrogen production from renewable sources
Balko, Michal ; Kropáč, Jiří (referee) ; Houdková, Lucie (advisor)
The goal of this bachelor's thesis is to make a summary of actual hydrogen production possibilities both from fossil fuels and from renewable sources. First part deals with production by steam reforming of natural gas and water electrolysis. Next comes the production from biomass by photofermentation and fermentation. Attention is paid especially to input materials and process conditions. In the end chosen processes of production are compared by their energy intensity found out by simplified calculation.
|
|
|
Alternative energy sources
Stránský, Jaroslav ; Moskalík, Jiří (referee) ; Škvařil, Jan (advisor)
In this work, I tried to summarize the current state of world energy resources that we use to convert into electrical energy. There is solved the question of compensation running short supplies of fossil fuels and reduce discharge of greenhouse gasses. I´m looking for suitable compensation in department of alternative energy sources, among which I included the power of the Sun, water, wind, geothermal energy, using heat pumps, combustion energy, nuclear energy, fuel cells and hydrogen use. About anyone of replacing sources you learn about its history, advantages and disadvantages, the principle of function energy transform devices, and compare the potential that is available in the CR and in the world.
|
|
| |
guest ::
