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Mathematical modeling of a wind turbine
Osička, Aleš ; Mastný, Petr (referee) ; Radil, Lukáš (advisor)
The aim of this paper is to acquaint the readers with basic classification of wind turbine configuration by used electric generator, with speed and power control used in power plants and with mathematical model of wind and parts of power plant. Procedure of making model in applications Mathematica and MathModelica is described in the other part of this paper. There were made models of power plants with squirrel cage asynchronous generator, one with pitch control, the other with stall control. In the last part of the thesis comparison of model behavior of both models with the same input conditions was made.
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Ultrasonic Anemometer
Křepelka, Pavel ; Fialka, Jiří (referee) ; Beneš, Petr (advisor)
In the first section of this document, there are described principles of the wind measuring. Anemometers can be divides by physical principles to mechanical (propeller or cup), ultrasonic anemometers and thermoanemometers. This paper is focused to ultrasonic anemometers. In the next part, there are described principles of sound propagation in the atmosphere. There are studies of measurement theory and comparing of different approaches. Completed solutions are presented in patent exploration. Afterwards, there are introduction of market research. Important parameters of ultrasonic anemometers are highlighted. Main aim of work is designing prototype of ultrasonic anemometer. Software, hardware and construct of experimental anemometer were designed. Created anemometer was calibrated in aerodynamics tunnel and results were compared with simulation output.
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City by the Ocean
Holcnerová, Lenka ; Kyselka, Igor (referee) ; Mléčka, Jan (advisor)
In between the Oceans and the Earth (The cities by Oceans) Projects in between the oceans and the earth For studies of towns on the seashores in magister studies under leadership of Ing. Arch Jan Mlecka I was impacted by two basic factors: firstly by my three years of studies and internships in Lisbon – a metropolis on the shore of Atlantic ocean, which became written into Lisbon’s DNA, into its light, tempo, priorities, historz, courage, strength, eternity, simplicity, sailing boats and elegance. And secondly I was influenced by a workshop organized by AA of London in February 2011 in Dubrovnik with lectures of Vedran Mimica and John Palmesino about towns, growth, quality of town life, policies and by studies of Southern Croatian coast under leadership of Krunoslav Ivanišin, where a floating platform was proposed to simultaneously solve several problems of this region. The more I become involved with oceans, the more I am fascinated by shorelines. This rare, dangerous, fractal line is the theatre of the biggest changes and dramas, but it also presents the greatest possibilities. (This is why I call my work not Towns by Oceans but In Between The Oceans and The Earth). When I was mapping shorelines, I have come across several findings: 1. The principles of constructions on shorelines are similar all over the world. 2. There are similar evolutionary stages in usage of shoreline – it is both physical and functional stages. 3. In many cases the potential of ocean is impaired by human interventions. Taking into account these facts, I was searching for further evolutionary stages of shorelines. In Lisbon I visited Ocean Energy Systems where 30 young engineers work on im-provements of machines designed to extract energy from oceans. In order to be effi-cient, these machines have to have giant dimensions. Immediately after seeing a generator on the island of Pico, I realized that such machines should not be put behind fences, creating an obstacle on the rare shoreline in between the sea and the land, but that they must be adopted by architecture – so that we will be able to live with them in symbiosis on the shoreline.
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Renewable Energy Source
Mašek, Martin ; Škvařil, Jan (referee) ; Fiedler, Jan (advisor)
My bachelor’s thesis deals with description and use of renewable energy resources in the Czech Republic. At the beginning of my thesis I characterize individual renewable energy resources and its today’s use. In the main part of the thesis I focus on wind energy in more details, especially technical description of the wind power plant. In the end of my thesis there is a description of the small workable wind power plant and its economic analysis.
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Sustainable energy sources
Doležal, Jan ; Nerud, Pavel (referee) ; Škvařil, Jan (advisor)
This bachelor’s thesis is a recherche dealing with sustainable energy sources. It lists and describes the various sources and shows their operating principles. In the last part it evaluates their current use in the Czech Republic and the possibilities for further development from economic and technical point of view.
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Design and construction of small windpower
Novák, Kamil ; Svoboda, Pavel (referee) ; Prokeš, František (advisor)
This thesis describes the design and construction of small domestic plants. It describes device with three-blade rotor and rated power 1 kW. It presents basic information and rules for the structure and gives an overview of the different types of design. The work is intended as a basic source of information for future implementation. The work includes the assembly drawing.
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Renewable energy sources in CR
Kozumplík, Ondřej ; Škvařil, Jan (referee) ; Fiedler, Jan (advisor)
The content of bachelor study is the technical recherche of the renewable resources of energy in the Czech republic. It appears here the principal, use, potential and advantages and disadvantages of each type of renewable resources - water, wind and biomass. Then the use of solar energy for photovoltaic conversion to electrical energy is described in detail. At the end of this study is described one of the many recently build photovoltaic power stations in the South Moravia territory, the solar power station in Bzenec.
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Renewable energy sources in CR
Vojáčková, Jitka ; Moskalík, Jiří (referee) ; Fiedler, Jan (advisor)
This Bachelor’s thesis is scholarly recherche dealing with renewable resources of energy in the Czech Republic. The preamble discusses legislation covering the topic of renewable resources of energy. Next part summarizes the different resources of energy and possibilities of their usage. The major part is dedicated to wind energy. The last part deals with the Wind park Břežany and its economical and technical specification.
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Wind energy
Dvorský, David ; Škvařil, Jan (referee) ; Fiedler, Jan (advisor)
Bachelor's thesis deals with wind energy. The first part includes the development of wind power plants in the Czech Republic and in the world. Furthermore, this work deals with the ways of the accumulation of wind energie. The practical part is the proposal of the calculation of economic return.
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Renewable energy sources in CR
Sedlák, Pavel ; Novotný, Zdeněk (referee) ; Fiedler, Jan (advisor)
The content of bachelor study is the technical recherche of the renewable resources of energy in the Czech Republic. I'm ineterested in a kind of renewable resources of energy. This especially contains wind energy, hydroenergy, solar energy and biomass. In each chapter you can find some informations about development, principle of function, technical characteristics, environmental impact and potential in the Czech Republic. At the end of this study are noted economy and legislation especially supports and prices of each renewable resource of energy.
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