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The Economic Effectiveness of Wind Power Project
Vániš, Jiří ; Radil, Lukáš (referee) ; Macháček, Jan (advisor)
The following text is devoted to wind power stations. It shows basic distribution of wind engine according to the principle of their function and suitability of their use for power generation. It shows the parameters that must satisfy the suitable sites for building wind power stations and it shows wind maps of the Czech Republic. There are described some of the most frequently installed machines in the Czech Republic. Next chapters describe the economics running part of wind power stations; analyze the basic cost-sharing, mention methods of tax depreciation of tangible assets, the redemption value of electrical energy from renewable sources. There are chosen some of the most used methods for assessment the economic efficiency of wind power stations. There are common methods of static and dynamic in terms of time value of money, the possibilities and limitations of their use. This information is a basis for designing and implementing a program to calculate the economic efficiency of wind power station. The goal is to create a computer program based on your input values and calculation methods to calculate the economic indicators and economic effectiveness of project wind power station in terms of total investment coasts and on equity capital projects. Based on evaluation of data it will be ready to determine whether the investment in to the construction of wind power station can provide the required funding.
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Effect of a nuclear power plant in terms of radiatin burden
Vániš, Jiří ; Procházka, Zdeněk (referee) ; Belatka, Martin (advisor)
This text deals with ionizing radiation affecting nuclear power plant personnel and surrounding population. Irradiation limits of radiological industry personnel are also mentioned along with ways of protecting them and checks on absorbed ionizing radiation dose. In conclusion, a nuclear power plant, as a source of ionizing radiation, and its effects on contamination of water sources and gas vents are evaluated. The next part be engaged problematical of storage nuclear waste from the time, when is removed the nuclear waste from nuclear reactor, trough permanent storage.
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Effect of EU doping on the optical properties of ZnO nanorods prepared by chemical bath deposition
Yatskiv, Roman ; Bašinová, Nikola ; Grym, Jan ; Vaniš, Jan
We report on the properties of Eu-doped ZnO nanorods prepared by chemical bath deposition from aqueous solutions in an autoclave. The autoclave enables to grow the nanorods above the boiling point of water. The nanorods were characterized by scanning electron microscopy, secondary ion mass spectroscopy, and low temperature photoluminescence spectroscopy. Under the UV light excitation, the nanorods show a strong blue emission at 450 nm, which is associated with the 4f(6)5d - 4f(4) transitions of Eu2+ ions. We discuss the mechanisms responsible for the blue luminescence. We further clarify how the growth parameters affect the morphology and the optical properties of the nanorods. Growth temperatures above the boiling point of water significantly influence the intensity ratio of the near band edge emission to the deep level emission and greatly enhance optical quality of the nanorods.
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Optoelectrical characterization of well oriented n-type zno nanorod arrays on p-type GaN templates
Yatskiv, Roman ; Grym, Jan ; Schenk, Antonín ; Vaniš, Jan ; Roesel, David ; Chlupová, Šárka
A heterojunction formed between a single n-type ZnO nanorod and p-type GaN template was successfully prepared by low cost chemical bath deposition technique. Periodic circular patterns were fabricated by focused ion beam etching through poly(methyl methacrylate) mask to control the size, position, and periodicity of the ZnO nanorods. A possible growth mechanism is introduced to explain the growth process of the nanorods. Optical and electrical properties of the heterojunctions were investigated by low temperature photoluminescence spectroscopy and by the measurement of current-voltage (I-V) characteristics. The I-V characteristics were measured by directly contacting single ZnO nanorods with the conductive atomic force microscopy tip. The diode-like rectifying behavior was observed with a turn-on voltage of 2.3 V and the reverse breakdown voltage was 5 V
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Electrical properties of nanoscale heterojunctions formed between GaN and ZnO nanorods
Tiagulskyi, Stanislav ; Yatskiv, Roman ; Grym, Jan ; Schenk, Antonín ; Roesel, David ; Vaniš, Jan ; Hamplová, Marie
Vertical periodic arrays of ZnO nanorods are prepared by hydrothermal growth on GaN templates patterned by focused ion beam. Electro-physical properties of a single vertically-oriented ZnO nanorod are investigated by measuring the current-voltage characteristics using a nanoprobe in a scanning electron microscope. This technique enables to observe the surface morphology of ZnO nanorods simultaneously with their electrical characterization in vacuum. The vacuum chamber rejects the impact of gas adsorption and light irradiation, which both affect the properties of ZnO nanorods. Moreover, mechanical damage and strain induced during the nanorod transfer are eliminated. Nonlinear current-voltage characteristics under the forward bias are explained by the tunneling-recombination process and by the space charge limited current. The high reverse bias current in the p-n heterojunction is attributed to direct tunneling via a narrow tunnel barrier
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Scanning thermal microscopy of thermoelectric pulsed laser deposited nanostructures
Vaniš, Jan ; Zelinka, Jiří ; Zeipl, Radek ; Jelínek, Miroslav ; Kocourek, Tomáš ; Remsa, Jan ; Navrátil, Jiří
New materials with high possible figure of merit ZT are of high interest as a promising candidates for thermoelectric applications such as energy harvesting. Miniaturization of such systems tends toward developing of the suitable characterization method with nanometer resolution ability. In our contribution, we present the development and experimental results of a simple scanning probe microscopy method for the relative thermal conductivity characterization. The possibility of the setup is demonstrated on the set of different thin thermoelectric layers grown from hot pressed targets by pulsed laser deposition on the reference Si substrate. All the measurements were performed on the commercial Veeco Multimode scanning AFM/STM microscope with home developed controller and by using PicoCal Inc. bolometer probes with tungsten resistive path. All the experiments were done in the air at the ambient condition. Additional sample treatment for the measurement will be also briefly described
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Effect of a nuclear power plant in terms of radiatin burden
Vániš, Jiří ; Procházka, Zdeněk (referee) ; Belatka, Martin (advisor)
This text deals with ionizing radiation affecting nuclear power plant personnel and surrounding population. Irradiation limits of radiological industry personnel are also mentioned along with ways of protecting them and checks on absorbed ionizing radiation dose. In conclusion, a nuclear power plant, as a source of ionizing radiation, and its effects on contamination of water sources and gas vents are evaluated. The next part be engaged problematical of storage nuclear waste from the time, when is removed the nuclear waste from nuclear reactor, trough permanent storage.
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The Economic Effectiveness of Wind Power Project
Vániš, Jiří ; Radil, Lukáš (referee) ; Macháček, Jan (advisor)
The following text is devoted to wind power stations. It shows basic distribution of wind engine according to the principle of their function and suitability of their use for power generation. It shows the parameters that must satisfy the suitable sites for building wind power stations and it shows wind maps of the Czech Republic. There are described some of the most frequently installed machines in the Czech Republic. Next chapters describe the economics running part of wind power stations; analyze the basic cost-sharing, mention methods of tax depreciation of tangible assets, the redemption value of electrical energy from renewable sources. There are chosen some of the most used methods for assessment the economic efficiency of wind power stations. There are common methods of static and dynamic in terms of time value of money, the possibilities and limitations of their use. This information is a basis for designing and implementing a program to calculate the economic efficiency of wind power station. The goal is to create a computer program based on your input values and calculation methods to calculate the economic indicators and economic effectiveness of project wind power station in terms of total investment coasts and on equity capital projects. Based on evaluation of data it will be ready to determine whether the investment in to the construction of wind power station can provide the required funding.
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Strategic analysis of ČEZ Distribuce, a.s.
Vaniš, Jan ; Machek, Ondřej (advisor) ; Boukal, Petr (referee)
The goal of this Bachelor's Thesis is to conduct a strategic analysis of ČEZ Distribuce, a.s., which is part of the biggest Czech energy group. It provides the reader with detailed information about the power distribution company itself as well as the Czech power distribution sector from the point of view of an external analyst. The thesis is divided into two parts: theoretical and practical. The first part gives information about the fundamental terms and mechanisms needed for the analysis itself. The focus is on definition of corporate strategy, analysis of micro and macro environments, economic analysis and summarizing SPACE and SWOT analyses. The second part aims to apply the above mentioned analytical methods to the particular case of ČEZ Distribuce, a.s. and the power distribution sector. It clarifies the main principles, barriers and trends in the power distribution sector in the Czech Republic. Additionally, the thesis stresses comparison with rest of the competitors performing on the Czech market (especially in the economic analysis part).
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Natural movement of population in the EU and its consequences
Vaniš, Jakub ; Vošta, Milan (advisor) ; Antal, Jarolím (referee)
This diploma thesis focuses on the analysis of demographic indicators and their development for the member states of the current European Union. The work is thematically divided into four chapters. The first chapter is mostly theoretically defined, for the purpose of explanation of all basic concepts. The second chapter shows us where Europe currently stands in terms of demographics. The third chapter is focused on defining the consequences of natural movement. The last chapter offers an analysis of a survey, in which total of 453 respondents from ten countries from allover Europe have participaded. There is no doubt, that the aging of population will have extensive social and economic soconsequences for Europe. On the other hand, we musn't forget that it is also an indicator of social and economic development, and therefore we should not be limited to perceive it only in a negative way.
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