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Wind power production for small-scale energy supply
Pavlik, Richard ; Chroboczek, Libor (referee) ; Pospíšil, Jiří (advisor)
The aim of this work is the issue of utilization of wind energy. At first, the cause of wind, measuring methods of wind direction and speed and the principle of utilization of wind energy by wind turbines are described. Subsequently, the structure of wind turbines, the construction of wind parks, the development of new types of wind turbines and the possibilities of energy accumulation are introduced. In conclusion, the concept and the economic evaluation of wind powered system for small scale energy supply is analyzed.
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Pile Foundations - Energy Piles
Hoza, Martin ; Leiter, Augustin (referee) ; Glisníková, Věra (advisor)
At a time when ecology and renewable energy sources come to the fore, the use of geothermal energy appears to be one of the suitable alternatives. The aim of this paper is to explain the function of ground source heat pumps, to mention factors affecting the efficiency of the system and discuss the technology of energy piles realization. This paper also focuses at risks associated with the soil temperature influencing and shows examples of realization.
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Negative impacts of renewable resources on environment
Kopeček, Marek ; Chýlek, Radomír (referee) ; Sitek, Tomáš (advisor)
Current society understands the need to protect the environment. Renewable energy resources are one of the major topics of environmental protection. Their benefits are reducing greenhouse gas emissions and reducing dependence on fossil fuels. The production process, operation, recycling, and possible accidents of renewable energy resources are investigated in each chapter. Attention was paid mainly to the most used renewable sources. Finally, the negative impacts are evaluated, and it is defined which renewable energy resources could be classified as ecological.
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Effect of distributed generation on medium voltage 22 kV distribution system operation with a new 110/22 kV feeder
Konopová, Tamara ; Bráblík, Libor (referee) ; Drápela, Jiří (advisor)
This thesis deals with the issue of power flow analysis in a medium voltage (22kV) distribution network with a focus on the influence of distributed energy generation recources. At first the issue of operation of distributed energy resources and their reverse effects on the distribution system is presented in the thesis. Furtherly there are described their operational conditions from the legislation point of view. The part dealing with calculation compares two network configurations in terms of power quality and how the power quality is impacted by distributed energy resources. The attention is given to voltage conditions, short-circuit power, power conditions, losses and flicker. The first configuration corresponds to the real situation in the network, the other one is describing the changes after the new 110/22 kV substation implementation to the power supply area and the overal change of network configuration. The network model and run simulation is done using the E-Vlivy program.
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The Life Cycle of Solar Power, Efficiency and Return
Kubín, David ; Radil, Lukáš (referee) ; Macháček, Jan (advisor)
This master’s thesis named “The Life Cycle of Solar Power, Efficiency and Return” is divided into seven chapters and focuses on the utilization of solar radiation in photovoltaic power stations and solar thermal power stations. The first chapter of this thesis familiarizes the reader with issues concerning renewable resources of energy and presents an overview of the focus of each chapter. The following second chapter is occupied with a topical research of renewable resources of energy utilization in Europe. Further the author presents a brief glance back at the past of solar energy utilization and also a prediction of future solar energy utilization in the Czech Republic. The chapter named “Specification and parameterization of individual technologies” contains an overview of today’s most utilized photovoltaic cells and panels together with an overview of utilized solar collectors and solar thermal power stations. In the following chapter named “Concretization of typical applications and realizations of photovoltaic and solar thermal power stations and determination of all related parameters” the author describes further components of photovoltaic and solar thermal systems. The economical aspect of photovoltaic component production together with an overview of utilized photovoltaic technologies is presented in this chapter. The problem of recycling photovoltaic applications and the current legislative situation regarding this issue in the Czech Republic is also outlined within this chapter. In the fifth chapter of this master’s thesis the author presents mathematical models of a photovoltaic and a solar thermal power station with the focus on economic aspects of investment efficiency assessment. Within this master’s thesis a simulation program in the computational software program Mathematica was created by the author. This program allows a calculation of economic efficiency and return of photovoltaic power station investments. The results of executed simulations are presented in the sixth chapter of this thesis. The last chapter contains an appraisal and summary of results achieved by the author of this thesis.
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Studie potenciálu území MAS Brána Vysočiny v oblasti obnovitelných zdrojů energie
Božková, Kateřina
The final thesis deals with the development of community energy in connection with the use of the potential of renewable energy sources within the territory of LAG Brána Vysočina. The main goal is the identification of the potential development of community energy and the use of renewable energy sources. As part of the theoretical anchoring of the issue, the literature search was focused on presenting the development of energy in the Czech Republic and the EU, explaining the concept of community energy and its barriers and opportunities associated with it. Furthermore, some examples of energy communities within the EU, initiatives on the territory of the Czech Republic are presented, and the entire literature review is concluded by the legislation of the Czech Republic related to community energy. An important aspect of the final thesis is the view of the member municipalities of LAG Brána Vysočina on the issue of community energy and the use of RES. A questionnaire from Enkis, s.r.o. was used to collect qualitative data and a semistructured interview with fourteen respondents. The goal is to evaluate the approach of individual respondents to the concept of community energy, perception of barriers and possibilities for the development of this concept. Based on the information obtained, general conclusions can be drawn indicating that the respondents perceive the development of community energy as beneficial, but at the same time rather problematic from the point of view of the absence of legislative grasp. Furthermore, the financial barrier is often mentioned, due to the lack of funds for the implementation of the energy community. Technological obstacles in terms of energy infrastructure are also pointed out.
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Energy supply of the ski resort
Turčina, Lukáš ; Skála, Zdeněk (referee) ; Pospíšil, Jiří (advisor)
The environmental targets of the European Union Member States are to achieve carbon neutrality in the next few years by producing green energy. To offset the impact of climate change causalities, it is crucial to increase the share of renewable energy resources as well as to reduce the dependence on fossil fuel imports. The main focus of the thesis is to increase energy sourced from alternative resources in ski resorts. Furthermore, a specific design of a wind power plant located directly in the ski resort together with the storage of the remaining energy is introduced to achieve the thesis’ objective. To select a suitable wind turbine, there is a need to choose a proper construction site that should dispose of stability and good-quality wind conditions. The performed analysis concentrates on the wind speed and frequency on the identified site. As a result, the performance of the selected wind turbine can be calculated. Moreover, given the turbine power and wind frequency, the amount of energy produced can be calculated. The potential electricity production is then compared with the ski resort’s consumption. The findings suggest that with suitable wind conditions and proper planning of energy production and storage, it is possible to cover a significant amount of the resort’s consumption. However, the model is dependent on the speed and stability of the wind, which may be highly volatile over time. Nevertheless, even such small steps can be crucial to achieving the set goals and can indicate the direction in which society will move towards.
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Potencial of RES in the Czech Rep
Kříž, David ; Zlevorová, Tereza (referee) ; Lisý, Martin (advisor)
In today's modern age, we still predominantly rely on non-renewable resources, the utilization of which further harms our planet Earth due to the significant greenhouse gas emissions. In order to reduce emission levels and the continuously increasing energy costs due to the diminishing supply of fossil fuels, humanity is striving to find alternative sustainable resources and methods for the future. The greatest hope for change lies in renewable energy sources. This work initially focuses on researching the currently available renewable resources in the Czech Republic, their gradual development throughout history, and their utilization methods here. Further information pertains to the projected development and potential of renewable resources in our country in the coming years, how we are capable of meeting the requirements set by the European Union, and what new technologies could be helpful in this regard. The final section presents a comparison of some significant European countries and selected neighbors in terms of the proportion of utilization of these resources.
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