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Use of Photovoltaic Systems in Off-grid Applications
Straka, Michal ; Macháček, Jan (referee) ; Baxant, Petr (advisor)
This masters thesis deals with the use of off-grid photovoltaic systems. First we explain the problems associated with the power and energy potential of photovoltaic system components, design of photovoltaic systems for autonomous operation and the financial evaluation. The result of the masters thesis is to create an application used to design the island system in the whole output range (the smallest power systems to house systems application). The conclusion of the masters thesis is devoted to designing three type of projects from our application – a garden cottage, a family cottage and the house.
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Risk analysis of energy storage
Albert, Tomáš ; Kracík, Petr (referee) ; Baláš, Marek (advisor)
This bachelor thesis analyzes the risk of accumulation of electrical energy and problems with its storage. The first part describes the various storage systems of electricity and are given their advantages and disadvantages. In the second part systems are compared against each other. The final section is intended suitability of each system and its use for application in the vicinity of Brno.
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The grid-off Wind Power, Principle, Effectiveness, Return
Havránek, Miroslav ; Radil, Lukáš (referee) ; Macháček, Jan (advisor)
This Master´s thesis deals with problematics of wind powered generators and their use in off-grid systems. In its first chapters aspects of wind as a power source are analyzed. Further on the thesis focuses on individual components of the off-grid systems. Also designing procedures of these systems are presented in the paper. The key parts of the thesis are 3 off-grid wind power system designs, which can be used to power a family house, and their energetical and economical evaluation.
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Energy supply of mountain cottage
Flöhsler, Tomáš ; Martinec, Jiří (referee) ; Pospíšil, Jiří (advisor)
The aim of this Graduation Thesis is to devise a system of energy supply intended to provide supply of electric and heat energy to a vacation property. The main feature of this energy supply project stands for a shift from mains power supply to alternative energy supply using renewable resources. The reason for this change is the fustiness of power lines and their negative effect on the surrounding landscape. Due to the fact that authorities did not permit renovation of these power lines, the only way to preserve the functionality of the vacation property is to secure its power supply by employing renewable resources. The vacation property (a mountain cottage) is located in Hrubý Jeseník Mountains, approximately 15 kilometers from the town of Šumperk. The thesis also contains a description of the way outlying settlements are currently supplied with energy, including the possibility of accumulation and a brief description of each electrical appliance’s power consumption. In the design itself, I calculated the necessary collector surface and analyzed the most effective collector placement. As for the wind energy system, I had to found the best spot to place the turbine. Last but not least, the thesis contains the technical-economical comparison of the proposed alternatives.
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Model of Bulk Energy Accumulation
Radil, Lukáš ; Barath, Peter (referee) ; Gregor, Jan (advisor)
The purpose of this pursuit is to introduce the reader about the questions of the accumulation of the electric energy and to outline possibilities of its design and what instruments is possible to get it. The other purpose is to inscribe possibilities of today´s attachment of dispersive sources to the net from the sight of the ERU, eventually from the sight of the UCTE. This persuit describes the posibility of the accumulation of adequate dimensions from renewable resources, the modern trends in this area and the prediction of future progress. The two most proper types of the energy accumulation are chosen by the following process with regarding to the optimal resolution of the given questions. The general balance will be ana-lysed by the comparison of their basic parameters. The other point of this pursuit is to try to realize a small model of the accumulation through the hydrogen´s cycle, it comes to that we can develop the efficiency and influence by the help of the electrolyzer and the metalhydride reservoir is realized energy of accumulation . In the conclusion of this pursuit is the appreciation of the whole project with the view of partly economical and especially with the view of the prospective usage into the electric grid
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Use Compressed Air to Electric Power Accumulation
Martinák, Rostislav ; Radil, Lukáš (referee) ; Baxant, Petr (advisor)
The aim of this paper is to acquaint the reader with the possibilities of using the energy of compressed air in different areas, but particularly with the use of compressed air to accumulate electrical power. This paper introduces the technologies they use to their function pneumatic tools, compressed air car and compressed air energy storage facilities. The next section is to compare the compressed air energy storage systems with some accumulation possible ways of electrical power. The conclusion sums up work opportunities to accumulate electrical energy in compressed air.
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Hydrogen as a promising energy carrier
Pinkas, Marek ; Brázdil, Marian (referee) ; Pospíšil, Jiří (advisor)
In recent years hydrogen has become an integral part of modern energetics. Although there are still many unresolved barriers and technological shortcomings in hydrogen energetics, its importance is expected to grow even more in the coming years. These facts were the motivation for writing this thesis. This bachelor thesis deals with hydrogen as a medium for energy storage and transmission as well as research about its properties, storage, production and use. In this thesis are described and compared various methods of long-term energy storage that are currently used. Presented are various traceable hydrogen pilot projects.
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Hydrogen and automobiles
Břoušek, Lukáš ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
The purpose of this thesis is to demonstrate the possibilities of hydrogen-based gear in personal cars. The thesis also describes the hydrogen from the perspective of the characteristics, the form of production, conserving, distributing and its utilization. Furthermore, in more details are described and compared currently well-known hydrogen-based devices, for this purpose the complex analysis Well to Wheel will be used. Final part of this publication will be devoted to evaluation of this analysis and also the thesis will outline what are the probable trends of the hydrogen-based technologies.
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Accumulation of Energy from Renewable Energy Sources
Heller, Ondřej ; Radil, Lukáš (referee) ; Mastný, Petr (advisor)
The objective of the first part of master’s thesis is mapping the potential of various types of renewable sources in Europe and Czech Republic, especially solar energy, wind energy, water energy and biomass. There are described principals and ways of energy generation from these sources, brief overview of current technologies, and also their advantages and limitations. An important part is electric supply continuity from renewable sources, there are large differences and the resulting to restrictions on construction and connecting the units to the power system. In this work there are mentioned some impacts on network and rates of change of supply, some sources are also evaluated in terms of maximum power, that can be connected to the power system in our country. The conclusion of the first part is dedicated to energy storage technologies, which are suitable and usable for renewable sources, there are described their principals, properties, status of development and types of aplications, in which these technologies are used. This chapter also focusses on the price level of each technology. The second part of the thesis deals with 1 MWp on-grid photovoltaic power plant design. This design includes also the redox flow batteries accumulation, the first variant calculates on 24-hour steady energy supply, the second optimalized variant calculates on daily energy supply. There are the accumulation system costs estimated and also the payback period for the both variants. Additionally there is also determined minimum penalization for cost-effective operation. The last part is dedicated to changes of impact on the local grid and changes of system impacts, after the accumulation system is installed.
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Possibilities of energy storage
Sedlák, Petr ; Hrnčířová, Michaela (referee) ; Moskalík, Jiří (advisor)
Because part of energy produced from renewable sources is growing continuously, increasing the gap between consumption and production of electricity. This has a negative impact on the electricity grid, therefore hence the need to accumulate energy. In the following work is mapped out different ways of accumulation of electrical energy. There is described their used, advantages and disadvantages of different storage systems
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