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Airborne wind energy system
Killioglu, Can ; Popela, Robert (referee) ; Zikmund, Pavel (advisor)
The master's thesis deals with the issue of flying wind turbines, which is an innovative area of renewable energy. The main advantage of these power plants over conventional wind turbines is their ability to reach higher altitudes and thus take advantage of stronger wind conditions. An important part of the thesis is the aerodynamic analysis of the rotor in autorotation mode, which investigates the behaviour of the propeller rotor. Furthermore, the conceptual and structural design of a selected type of flying wind turbine is carried out.
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Hydrostatic bearings for wind energetics
Procházka, Michal ; Foltýn, Jan (referee) ; Michalec, Michal (advisor)
This bachelor thesis deals with the bearing of the main rotor shaft of a wind turbine using hydrostatic bearings. Wind turbines come in many designs and the thesis then determine the operating parameters and bearings used in horizontal axis turbines of different installed power outputs. Currently, repairs, as well as servicing of bearings, are very costly and affect the operation of the entire power plant. Hydrostatic bearings offer advantages that could reduce the failure rate of wind turbine bearings. The operating parameters of turbines of different outputs were used to calculate the selected hydrostatic bearings. The results shows that the use of this type of bearings is possible for turbines with different power outputs, but higher efficiency is estimated for larger turbines (for example 8 MW turbine). The energy consumption of bearing, required to drive the hydrostatic bearings, reaches 0,03 % of the total output, compared to 0,39 % for the smaller 55 kW turbine. The calculation has been simplified in the initial energy performance estimation and further steps could include bearing geometry optimization or extending the operating parameter range of the wind turbines.
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Modern technologies for self-sufficient houses
Popara, Nikola ; Chýlek, Radomír (referee) ; Špiláček, Michal (advisor)
The bachelor thesis deals with modern technologies for self-sufficient houses. In the theoretical part of the thesis individual energy sources are explained. Sources of energy are divided in two major groups and that is source of heat and source of electrical energy. In the next part of my thesis cost of energy sources from different companies is calculated.
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The Project Proposal for Construction of Wind Turbines
Horák, Filip ; Ondráček, Pavel (referee) ; Doskočil, Radek (advisor)
This bachelor's thesis deals with a project proposal for construction of wind turbines. The first part is consisted of definitions of some basic terms of project management and also of description of methods, techniques and tools of project management, which represents theoretical backround for two following parts of the thesis. There is analyzed wind energy in Czech Republic and the company and its environment and gradually produced a plan of project as requested by a certain company. for supporting their decision-making process. The results of this thesis help other investors or public to understand the process of wind turbines construction.
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Center winery Nemcicky
Mezník, Lukáš ; Velička, Jaroslav (referee) ; Dýr, Petr (advisor) ; Kalousek, Lubor (advisor)
The objective of this Bachelor Thesis is the design of the new building of the winery center near the village Němčičky in the district Břeclav. The Bachelor Thesis expands and specifies an architectural study which I drafted as my AG32 course during the winter semester of my second-year study up to the level of Documentation for Planning Permission and Documentation for Execution of the Project. The assignment was to design a new building of the winery and winery center, south of the Němčičky. It was supposed to be a dominant building on the hillside of a vineyard, which leads around the wine-growing hiking trails. This winery center should popularize local wine making and a location known as the Blue mountains. The building should be able to produce of electricity, preferably on the wind base. Next there should be a lookout tower that would create an interesting tourist destination from whole center. The design concept was based on spiritual symbolism, where wine became the core of everything. The building should its mass solution to be a temple, where the lookout tower is a banner and a beacon, which the summons its sheep while providing a view of the country covered with vineyard. The design is two-story object of winery serving as a place to present the brand, sale wine and wine tasting. The tower is freely accessible to the public. Center is wooden frame structure with a green roof and lamellar facade, which supports the connection between nature, wine and the building itself. The lookout tower is steel with wooden lathing that connects both buildings.
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Hydrogen production from renewable energy source
Lakva, Petr ; Baláš, Marek (referee) ; Jícha, Jaroslav (advisor)
Hydrogen, as a form of storage for the excess energy from renewable sources, is a technically and economically viable option. However, the technology is not mature enough to compete with the other renewable energy possibilities. In this thesis, a study based on coupling two 330 kW wind-turbines with an NELP. 40 electrolyzer this connection should improve the utilization of wind power. In this thesis are two options of energy utilization. The energy produced by the wind-turbine is stored in the form, of hydrogen and is then delivered for consumption at variable power through a fuel cell, second option is use of produced hydrogen as alternative fuel for cars. This study is a general introduction for the wind energy system with hydrogen storage. Future studies should be more complex and detailed in order to understand and model the system with greater accuracy and to increase the possibility for the utilization of wind energy to generate hydrogen. This would enhance wind power competitiveness and sustain the continuously changing world energy demands.
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Design of small Wind Turbine System With Savonius Rotor
Foltýn, Petr ; Macháček, Jan (referee) ; Procházka, Zdeněk (advisor)
This Bachelor’s thesis deals with proposal of constructional solving of wind turbine system with Savonius rotor. In the first part, thesis includes complex theoretic knowledge, that make for optimal construction wind energy source. In the second part, the concrete proposal of small wind turbine system has been drawn up, including 3D model and constructional drawings in Autodesk Inventor Professional 2009.
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Wind Turbine Model for Research and Laboratory Applications
Števček, Tomáš ; Ptáček, Michal (referee) ; Mastný, Petr (advisor)
A major portion of this thesis is devoted to the Whisper 200 wind turbine model in Matlab-Simulink environment. The turbine is installed at the Department of Electrical Power Engineering, FEEC BUT. In the model, several types of simulations can be executed. On that basis, the power curve and mathematical relationships between wind speed and other physical quantities, such as RPM, electic current, and voltage, were obtained. Comparisons of the simulations' results with measurement data illustrate adequate agreement, but limitations of the model remain significant, as is exhaustively documented and commented upon in the thesis. As a partial advancement towards elimination of the model's deficiencies, conditions for substantial performance improvements of the dynamic simulation have been elaborately derived.
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Wind energy
Král, Ondřej ; Brázdil, Marian (referee) ; Kracík, Petr (advisor)
This bachelor’s thesis discuss wind energy sector. The first chapter focuses on basic construction types of wind power plants, their classification and description of the main parts. Basic physical principles by which electrical energy is produced, presents the next section, which deals with the lifetime of wind turbines, too. The final chapter describes the development of wind power in history, wind energy is here compared with other energy sources, and finally it is dedicated to matter of wind turbines’ energy payback.
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