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Hydrogen production by the bacteria of the genus Clostridium
Filová, Dagmar ; Kvasničková, Eva (referee) ; Rittich, Bohuslav (advisor)
Bachelor thesis deals with hydrogen production using bacteria of Clostridium genus - specifically C. butyricum and C. tyrobutyricum. Theoretical part analyzes means of hydrogen production divided into biological and non - biological methods. Thesis is further aimed at practical use of these microorganisms for hydrogen production purposes and introduces cheese whey as one of utilizable growth medias. In experimental part, there was used polymerase chain reaction for identification of bacteria genus Clostridium and species Clostridium butyricum and Clostridium tyrobutyricum. PCR products were reamplified using the same primers for specifity confirmation purposes. Presence of gene producing hydrogenase A enzyme was proved by PCR, too.
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Hydrogen fuels
Tyagunova, Victoria ; Bébar, Ladislav (referee) ; Jícha, Jaroslav (advisor)
This thesis presents a basic review of production and use of hydrogen fuels. The main focus of this paper is the use of hydrogen in industry and power engineering. The first part concerns various industrial production technologies. The next section is dedicated to the description of hydrogen use for energy conservation, fuel cells, power plants and combustion engines. it includes the comparison of hydrogen and classic fuels. The final part focuses on the economy and costs of hydrogen production and use. This paper will evaluate hydrogen as a potencial fuel for future and will estimate it’s advantages and disadvantages in comparison with conventional fuels.
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Hydrogen and automobiles
Břoušek, Lukáš ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
The purpose of this thesis is to demonstrate the possibilities of hydrogen-based gear in personal cars. The thesis also describes the hydrogen from the perspective of the characteristics, the form of production, conserving, distributing and its utilization. Furthermore, in more details are described and compared currently well-known hydrogen-based devices, for this purpose the complex analysis Well to Wheel will be used. Final part of this publication will be devoted to evaluation of this analysis and also the thesis will outline what are the probable trends of the hydrogen-based technologies.
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Hydrogen production and storage
Tunys, Daniel ; Lachman, Jakub (referee) ; Elbl, Patrik (advisor)
The submitted bachelor’s thesis deals with the research od available methods of hydrogen production and storage and a summary of important current or future hydrogen projects. The thesis discusses possible ways of hydrogen production from fossil and renewable sources and puts into perspective the advantages and disadvantages of individual conventional and experimental methods. The described methods are also compared in terms of emissions that arise during the process. Furthermore, the thesis compares different methods of hydrogen storage and transport with regard to the appropriate practical use of each of them and describes the advantages and disadvantages of different hydrogen storing methods. The last part is an extract of important Czech and global hydrogen projects and hydrogen strategies of individual countries.
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Possibilities of nuclear energy in the field of energy and media production
Svoboda, Filip ; Lisý, Martin (referee) ; Milčák, Pavel (advisor)
The main objective of this thesis is the possibility of combining nuclear power plants with energy storage technologies (specifically hydrogen production) and the subsequent balance of electricity and hydrogen production when combining these hybrid systems with photovoltaic power plants. With large installed capacities of renewable energy sources, it is necessary that other sources in the energy portfolio are flexible and then it is possible to regulate the supply of electricity from these sources to the electricity grid (for example, reducing the output of a steam power plant for natural gas on sunny and windy days). The regulation of a nuclear power plant is limited and therefore it is advantageous to start using it, for example, in a hybrid system with a PEM electrolyser. Then the nuclear power plant can produce electricity at a constant rate and only regulate the amount of electricity that goes to the grid or to the electrolyser.
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Electricity storage with Power to gas
Bartlíková, Zuzana ; Pospíšil, Jiří (referee) ; Baláš, Marek (advisor)
This diploma thesis deals with accumulation of electricity energy using power to gas technology (P2G). The thesis is divided into two parts. The first part describes the whole system from the production of electricity, through water to the production of hydrogen by available technologies and possibilities of using hydrogen. For individual parts of the P2G system are described their operating conditions, advantages, disadvantages and efficiency. The second part of the thesis is practical. Several possible uses of hydrogen produced and the efficiency result of these P2G systems are determined. Finally, there is one use of the hydrogen produced which is compared from the energy point of view with the system that is currently used to store electricity.
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The hydrogen bus
Kopecký, Petr ; Březina, Michal (referee) ; Štětina, Josef (advisor)
This bachelor's thesis deals with the topic of hydrogen buses, their concept, properties, practical application and economics of operation. It also discusses safety and hydrogen infrastructure, in particular hydrogen production, storage and use, while mentioning future options. Various technical solutions are evaluated with regard to the specifics of buses. It thus offers a general overview of the topic of hydrogen buses and related infrastructure.
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Design of Energy Systems Using Hydrogen as Fuel
Slováček, Adam ; Kermes, Vít (referee) ; Houdková, Lucie (advisor)
The subject of diploma thesis is to gather knowledge in the production and use of hydrogen. This work is devoted to a comparison of the previously existing processes for producing hydrogen, where the vast majority is filled of fossil fuel. Another section is devoted to new materials for the study based on a number of selected patents and the experiment promising new method for decomposition of water. Based on available data will be carried out energy balance and consequently will be drafted energy system using hydrogen as fuel. In conclusion will be future possibilities evaluated in the field of hydrogen energy.
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Design of Energy Systems Using Hydrogen as Fuel
Slováček, Adam ; Bébar, Ladislav (referee) ; Houdková, Lucie (advisor)
Purpose of this thesis is wisdom accumulation from current area of energetic use of hydrogen and future systems. In overview is presented possible processes where dominate steam methane reforming. In main part of thesis, steam methane reforming will be analyzed and electrolysis also. Actual results will be discussed. Next part is about energetic use of hydrogen based on thermochemical properties and safety. Used of hydrogen will be divided to areas thermal generation as burner‘s section, electric generation as fuel cell‘s section, mechanical energy as combustion engine’s section and finally chemical transportation of energy. At the end will be made a promising energy systems using hydrogen as fuel which can be applied in a large scale.
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Hydrogen as an alternative fuel for internal combustion engines
Hurník, Jakub ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The object of this bachelor’s thesis is to analyse characteristics of hydrogen and it’s suitability for internal combustion engines used in transportation technologies. The thesis begins with some significant reasons for implementation of alternative fuels, the main part is focused on hydrogen technologies and it finishes with short prediction of the use of hydrogen in the future. The potential of this fuel is analysed from all important points of view, which means its production, storage, ecology and construction of hydrogen powered engines. The thesis also contains summary of current hydrogen technologies, their comparation, and comparation with current conventional engine technologies.
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