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Update of the wind energy potential of the Czech Republic from the perspective of year 2020
Hanslian, David
The study updates the preceding analyses of wind energy potential of the Czech Republic published in 2008 and 2012. The assumptions for the estimation of the future possibilities of wind energy development were updated with respect to the current and currently assumed future technological and social development. The new findings on the feasibility of realization of wind turbines, operation issues and energy production were taken into account. Beyond the scope of previous studies, the broader context was discusses, considering various limits of wind energy utilization, such as permitting issues, climate impacts or grid integration.
Design of wind power plant
Starý, Ondřej ; Dlugoš, Jozef (referee) ; Řehák, Kamil (advisor)
Renewable energy sources are currently a much-discussed issue. One of the possibilities of their use is the production of electricity using wind power plants. This work therefore describes in detail construction of wind turbines. At the same time, there is a brief evaluation of wind power plants, from an energy and economic point of view. Part of the work is also the calculation of the optimization of the gearbox weight and a description of the design of the wind turbine coupling.
Wind power plant
Šponiarová, Petra ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The electricity production from renewable sources is a very current topic. It also includes the electricity made by wind power plants, which the bachelor’s thesis concentrates on. An extensive research study was conducted to provide an overview of wind turbine types. Concerning wind power plants, apart from their visual impact, noise and vibration connected to their operating is an often discussed issue. The construction of a wind turbine stands for the most important role in reducing such unwanted effects. Technical experiments following specific standards and recommendations are performed to assess the impact of wind turbines-emitted noise and vibration on humans. In order to assess noise and vibration of a wind turbine a technical experiment is proposed, which uses different approaches to determine the critical components. The selection of a suitable measuring equipment and the choice of location for its subsequent use are important parts of the design. At last, the use of wind power plants is critically reviewed.
Aerodynamics of axial wind turbines
Dubnický, Ladislav ; Pospíšil, Jiří (referee) ; Škorpík, Jiří (advisor)
Nowadays, the climate change issue is becoming more and more actual in our society. Increase of the average temperature on Earth in a couple of degrees could have catastrophic consequences. One of the possible solutions seems to be renewable energy sources as photovoltaics, biomass of water and wind energy. This thesis deals with the aerodynamics problems of wind energy source. Wind turbines transform kinetic energy of wind to mechanical power. The efficiency is physically limited to 59,26 %, but in reality, it is getting around 45 %. This is caused by three biggest losses inducted in wind turbines as wake losses, losses due to finite number of blades and drag losses. Based on analytical relationships and including these three losses the aerodynamics blade design is conducted. Later, the numerical simulations show higher values of drag and lower values of lift force on airfoil compared to analytical calculation. In fact, percentage deviations are acceptable and to conclude, the numerical analysis was able to relatively accurately simulate force action of free stream velocity on the blade.
Center winery Nemcicky
Ondrová, Klára ; Velička, Jaroslav (referee) ; Dýr, Petr (advisor) ; Kalousek, Lubor (advisor)
This bachelor thesis deals with the design of Centre of Winery for the Modré Hory area. The proposed building should respect the surrounding environment, and attract tourists in the same time, by architectural form, urban planning and design. The plot for construction is located near the village Němčičky u Hustopečí on the hilltop of Nové hory. Currently, vineyards are being restored, which almost completely cover the whole area. The object of the wine center includes a canteen for tourists, a tasting room, a cellar for storage of bottles and technical and hygienic facilities. Production component is it's own electric energy cumulator. Using a renewable wind source. Part of the proposal should be the overview tower, making the site more attractive. The object does not process grapevine, it only archives bottles and works as a showroom and stop at a wine-growing cycle path. It has a simple rectangular ground plan with a sloping roof to cover the entry part and to shield the large glazing. On the ground floor there is a café with a background, a tasting room, hygienic facilities, a brick cellar and technical rooms in the basement. The facade of the building is covered with Siberian larch wood. A viewing tower is located at the west side of the building, almost at the top of the hill. The tower has a cylindrical shape and measures almost 14.5 m. It is also clad with wood of the same type. The production of electricity is provided here by 9 vertical wind turbines located along the northern boundary of the building on the artificial wall.
Aerodynamic design of wind turbine
Žabka, Marek ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
This Master’s thesis focuses on the wind turbines. It describes the basic attributes of the wind energy and the wind potential of Slovak Republic, as well as the environmental impact of this sector. Meteorological data for the selected location are processed according to the Weibull distribution and they are used for the aerodynamic design of the wind turbine blades. Aerodynamic design is processed by using two methods. The first is the blade cascade theory, which is used to design prismatic and twist blades. The second method is called the blade element momentum, which is used to design wind turbine but only twist blades are designed by using this theory. Calculated aerodynamic shapes are compared and the best economic solution for the selected location is chosen.
Wind power – the past, the presence and the future
Kučera, Vítězslav ; Klimeš, Lubomír (referee) ; Charvát, Pavel (advisor)
This Bachelor’s thesis deals with the evolution of wind turbines from the past to present and also concentrates on the evolution of wind turbines in the future. In first part the begin-nings of wind energy use are given, and the first wind turbine is mentioned. Further, the parts of wind turbine and its construction are described in next part, where the current state of wind turbines in the Czech Republic and in the world is presented. New concepts of wind energy are introduced. Finally, last part performs wind turbine simulation over the span of one year.
Calculation of repowering potential for existing wind turbines
Hanslian, David
The energy production of considered new wind turbines, that could replace existing wind turbines, was calculated on the basis of data from current wind turbines. The data analyzed include wind speed, wind direction and energy production. The study includes detailed analysis of measured data, correction of discovered inaccuracies and correction for long-term wind conditions (measure-correlate-predict analysis).
Control Processes in Energy Systems with Alternative Power Sources
Morávek, Jan ; Kolcun, Michal (referee) ; Braciník, Peter (referee) ; Mastný, Petr (advisor)
The dissertation is an publication summary focused on the field of management processes in renewable energy systems, mathematical models and optimization possibilities for large and small scale photovoltaic systems. The articles were published in foreign impacted and reviewd journals and indexed proceedings of foreign and domestic conferences. The main results of the dissertation are the design, configuration and realization of the hybrid energy system with subsequent optimization. Using the data from the laboratory system, a mathematical model was compiled and subsequently validated in the Matlab/Simulink environment for a hybrid energy system with accumulation. The options for power production optimization with photovoltaic sources are based on both operational measurements (for commercial applications) and on the analysis of power flow controllers to optimize the~energy balance (for small scale applications in private buildings).
Discussion of socio-geographic aspects of renewable energy sources in Czechia
Görcs, Jan ; Hána, David (advisor) ; Pulec, Jan (referee)
Discussion of socio-geographic aspects of renewable energy sources in Czechia Abstract Modern society is completely dependent on electricity supplies in every aspect of life and the economy. The task of every developed country is protection and ensuring sufficient energy in the required quality. Otherwise, the lack or interruption of supply may paralyze the country's life and economy. The current energy problem lies on the fact that it is based on non-renewable energy sources with limited quantity. In addition, they have a negative impact on the environment. Renewable energy sources also provide limited solutions to the situation. This bachelor's thesis therefore analyses the assumptions, possibilities and potential of the development of renewable sources in Czech electricity, in relation to the energy position, environment, electricity, society and economy. The aim of the thesis is critical evaluation of the pros and cons of the implementation of alternative energy sources in the energy mix. Key words: renewable energy sources, alternative sources of energy, energy mix, solar energy, wind energy, water energy

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