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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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Comparison and classification of ecological impacts of different types of power stations
Kunc, Dominik ; Bartošík, Tomáš (referee) ; Mastný, Petr (advisor)
The main subject of this work is to compare the ecological impacts of different types of power stations, to describe the possibilities how to reduce some of their harmful effects, and to design a cleaner electricity production process. Firstly the summary of this paper structure is introduced and the choice of its subject is explained. The second part describes the structure of energy mix in the Czech Republic in 2009 and in the following subheads there are defined basic principles of the particular power stations’ functioning, harmful effects rising during their operating and their impacts on people and the environment. There is the evalution of the power plants that created the indispensable amount of electric energy in 2009, which are: thermal power stations (mainly coal-fired ones but also the power plants burning biomass and the gas power plants), nuclear power plants, water power plants, wind power plants and solar power plants. Further there is mentioned the economical demand of energy generation from various sources and thein potential in our country in the next years. In the following part is focused on the possibility of reducing harmfulness in present electricity production, to the reduction of carbon dioxide emissions. It briefly describes the influence of this greenhouse gas on warming of our planet, what methods of capture carbon dioxide are recently available, what are the principles of these methods and what are the possibilities of carbon dioxide storage and transportation. Then we sum up economic demands of power production in the relation to useage of these technologies in various types of power plants. Likewise the possibilities of their realization in the Czech Republic are discussed. At the end of the second chapter we estimate the change of energy mix in the Czech Republic as a possible reduction of detrimental effects created by electric power production. In the third part we classify and compare these harmful impacts. Last chapter is focused on the evaluation of our energy mix estimation.
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Dispersed production and its influence on distribution network
Kácl, František ; Vybíralík, František (referee) ; Mastný, Petr (advisor)
The diploma thesis deals with dispersed generation (production). The small electric power sources are connected into distribution networks. Types and principles of the small electric power sources are studied. The legislation framework concerning renewable energy sources utilization is described. These power plants have impact into distribution networks and therefore techniques for the source connection to distribution network are included in the thesis. The impact of the specific small source of electricity must be studied.
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Chemical Properties of Flue Gas Desulphurization Gypsums from Different Energy Sources
Kroulíková, S. ; Mercl, F. ; Száková, J. ; Perná, Ivana ; Tlustoš, P.
There were compared flue gas desulphurization gypsums (FGDGs) from four different power plants in the Czech Republic on chemical properties (pH, total content of nutrients and risk elements) and then was assessed their potential for utilization in agriculture as fertilizer without any risk to the environment. According to our results, the FGDGs represent an important possible source of sulphur (17.8 – 19.0 %) and calcium (23.0 – 30.2 %) for reduction of their deficit in the soil. However, contents of arsenic and of mercury in three of the tested FGDGs not fulfil the limit values for fertilizers. In the future, the remaining FGDG is thus necessary to evaluate for its fertilizing effects in model and field conditions.\n\n
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Czech electricity grid vulnerability analysis
MICHALEC, Jan
Acts of terrorism are used by various individuals, groups and transnational networks to push forward own political views, ideas and ideology on society whilst using multiple forms of violence. Their acts of violence are able to jeopardize and endanger health and safety of peoples, environment and the vitality of critical infrastructure as well. Nowadays the most spelled threat comes from so called foreign fighters whose destabilized and war-torn countries of origin are located in Northern Africa and Middle East. In combination with inefficient management of illegal migration phenomenon and unsatisfactory EU policies on that matter the problem becomes even more amplified. Schengen Area provides EU-members with non-restrictive border regime which fosters migration and trade by a great deal but on the other hand it creates an enormous security risk in terms of terrorism and its prevention. For that matter there should be much more emphasis added to the management of EU outside borders. The second most problematic issue are the matters of radicalization of individuals and minority groups in the EU. There might be a causal relationship between growing rates of frustration between peoples and social marginalization of noted societal groups which might be caused by unsatisfactory assimilation policies of respective EU member states. The goal of this given thesis was to analyze risks to Czech electrical grid which might be posed by an act of terrorism. The analysis was done by breaking down the electrical grid safety measures into respective sectors and parts. Risk for each particular category were analyzed and final risk assessment whilst using help of security professionals. A questionnaire method was used to complete this particular task. The questionnaire dataset was later used to identification of most vulnerable weak-points in the electricity transmission system of the Czech Republic in respect to acts of terrorism. This diploma thesis might be used as a blueprint for improvements in the security management of the Czech electricity transmission system and for educatory purposes at the University of South Bohemia, at the Faculty of Health and Social Sciences.
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Comparison and classification of ecological impacts of different types of power stations
Kunc, Dominik ; Bartošík, Tomáš (referee) ; Mastný, Petr (advisor)
The main subject of this work is to compare the ecological impacts of different types of power stations, to describe the possibilities how to reduce some of their harmful effects, and to design a cleaner electricity production process. Firstly the summary of this paper structure is introduced and the choice of its subject is explained. The second part describes the structure of energy mix in the Czech Republic in 2009 and in the following subheads there are defined basic principles of the particular power stations’ functioning, harmful effects rising during their operating and their impacts on people and the environment. There is the evalution of the power plants that created the indispensable amount of electric energy in 2009, which are: thermal power stations (mainly coal-fired ones but also the power plants burning biomass and the gas power plants), nuclear power plants, water power plants, wind power plants and solar power plants. Further there is mentioned the economical demand of energy generation from various sources and thein potential in our country in the next years. In the following part is focused on the possibility of reducing harmfulness in present electricity production, to the reduction of carbon dioxide emissions. It briefly describes the influence of this greenhouse gas on warming of our planet, what methods of capture carbon dioxide are recently available, what are the principles of these methods and what are the possibilities of carbon dioxide storage and transportation. Then we sum up economic demands of power production in the relation to useage of these technologies in various types of power plants. Likewise the possibilities of their realization in the Czech Republic are discussed. At the end of the second chapter we estimate the change of energy mix in the Czech Republic as a possible reduction of detrimental effects created by electric power production. In the third part we classify and compare these harmful impacts. Last chapter is focused on the evaluation of our energy mix estimation.
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Dispersed production and its influence on distribution network
Kácl, František ; Vybíralík, František (referee) ; Mastný, Petr (advisor)
The diploma thesis deals with dispersed generation (production). The small electric power sources are connected into distribution networks. Types and principles of the small electric power sources are studied. The legislation framework concerning renewable energy sources utilization is described. These power plants have impact into distribution networks and therefore techniques for the source connection to distribution network are included in the thesis. The impact of the specific small source of electricity must be studied.
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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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Biodiversity of epigeic beetles in maize and raps fields
BRUSOVÁ, Dagmar
Thesis deals with the evaluation of the impact of the cultivation of oilseed rape (Brassica napus subsp. Napus) and maize (Zea mays L.) at the diversity and activity of communities epigeic beetles. Number of monocultures of energy crops grown in recent years, which has an impact on many different aspects of the landscape and the environment. Work provides data on the representation of individual species of beetles in epigeic energy crops and evaluate the key factors that affect the population of the species in question and the representation of individual species studied stands. In this work it is possible to get acquainted with the methodology of sampling, taxonomy basic types of statistical methods and evaluation samples.
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State Aid and Taxation of Renewable Resources
Kouba, Matěj ; Marková, Hana (advisor) ; Kohajda, Michael (referee)
The thesis with the topic State Aid and Taxation of Renewable Resources deals with the renewable resources in general, reason of their support, function of renewable resources powerplants etc. This thesis describes also the state aid of renewable resources in the Czech Republic and their taxation as well. A small part of this thesis analyzes the state aid in the other EU countires and contains their comparision with the Czech Republic.
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