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The Modeling of the Fan-Cooler Systems of the Containment VVER 440 V213 NPP
Baláž, Jozef ; Matoušek, Antonín (referee) ; Cvan,, Milan (referee) ; Fiedler, Jan (advisor)
The topic of the thesis regards of problems of compilation the model of existing fan-cooler systems of VVER440/V213 NPP. These systems can be operated not only normal operation conditions but also during abnormal and accidental operation of the plant, which are significantly different from those operating conditions for which were systems dedicated and designed. An advanced model, compiled as one of the subjects of this thesis, capable to predict behaviour of these systems during accidental conditions of the plant, is described within this paper. The advanced model is a part of LEAKBOX model. LEAKBOX model represents a superordinated program dedicated to modelling overall VVER 440/V213 containment response during accidental conditions of the plant focusing onto small coolant leakage in to the containment.
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The Suggestion Small Water Resources
Knápek, Michal ; Mastný, Petr (referee) ; Matoušek, Antonín (advisor)
This Bachelor’s paper deals with design of a micro hydro power plant. First, a suitable location for the plant is chosen. Second, technology for the plant, along with technical equipment and enginery, is proposed. Third, electrical part of the project, including power feeding into the grid, is proposed. Last, economical projection of costs and benefits of the plant is calculated.
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Utilization of renewable energy sources in Czech Republic
Kopička, Marek ; Bok, Jaromír (referee) ; Matoušek, Antonín (advisor)
This thesis deals with consideration of energy facilities structure in Czech Republic. It is depicted in it their evolution from point of: electric energy consumption, structures of energy facilities and electricity prices. Further, is here depicted a production of electric energy for the year 2009, from the point of: produce, sources, consumption and ratio of factories. Of course, the RSE (renewable sources of energy) effect and share of scope on this evolution and structure, is also mentioned here. The next part is pointed to basic description of each sources of electric energy. It is not mentioned here only factories which uses for it´s production renewable primary sources but also another types of factories. Their pros and cons are also summarized. The last part of this work is a thought of realization of fictive project, which could replace a part of steam power plants' share by producing electric energy through renewable sources. It is re-counted and suggested here a few possibilities of this realization from the point of needed installed power and approximate estimation of capital expenditure.
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Partial Solution of Hybrid System with Low-Temperature Fuel Cells and Renewable Sources
Ptáček, Michal ; Mišák, Stanislav (referee) ; Tlustý,, Josef (referee) ; Matoušek, Antonín (advisor)
The thesis deals with the principle functions of low-temperature fuel cells with proton exchange membrane (PEMFC), photovoltaic sources (PVPP) and wind energy sources (WPP), along with solving their detailed mathematical expressions. In this work, the individual sources and their simulated models are analyzed in depth. The actual simulation is preceded by familiarization with important historical milestones in the development of fuel cells. Furthermore there is a basic classification of fuel cells and the characteristics of the cells used in the energy sectors. The text also provides information on projects that address the implementation of PEMFC as a primary or supplementary source of energy. Along with outlining the options for PEMFC as a perspective hydrogen technologies in the near future, the basic methods of hydrogen production and storage options are presented for the complexity. The work is exclusively focused on improving PEMFC mathematical models that under the hybrid system cooperate with renewable energy sources (RES). Part of the theses contains a short review of run or modeled concepts of hybrid systems in the energy sector. Using these models the main deficiencies of the models or of the whole PEMFC system can be identify. Specifications of the deficiencies lead to the creation of a new advanced dynamic PEMFC model that allows an analysis of the development of electrical and non-electrical quantities using long term tests. Furthermore, the thesis presents results of the experiments of thermal and dynamic behavior PEMFC, which were obtained from the additionally extended model with a reformer and the DC/DC converter. In this text there is a model of a photovoltaic module created, which is based on the nominal values parameterization. The model is subjected to basic experiments in which measured hydrometeorological data are used. If the hybrid system utilizes renewable energy sources, it is good to know the evolution of atmospheric conditions in the installation of these resources. Specifically for PVPP, publicly available databases containing information about solar radiation levels can be used for the selected location. Public databases are often used for initial design and manufacturing options for PVPP. An evaluation of the relevancy of public databases is performed based on a long-term observation of real measured data. Furthermore, these data are used for experiments on the photovoltaic module. Partially the text addresses the issue of the wind energy sources, however, it is simulated only on a simplified model of WPP. Created models of subsystems can be generally implemented as partial inputs hybrid systems in the future work. The thesis was developed at Centre for Research and Utilization of Renewable Energy (CVVOZE) with the financial support of the National Programme for Sustainability and the Ministry of Education, Youth and Sports of the Czech Republic under the project no. LO1210 - Energy for Sustainable Development and the project no. FEKT-S-14-2520 - New Technologies for Sustainable Development of Electrical Power Systems. The thesis was also generated under the project no. TA03020523 - Dynamic model of distribution network with the financial support of Technology Agency of the Czech Republic.
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Impact of Renewable Sources on Power System Operation
Malý, Jiří ; Rusek, Stanislav (referee) ; Modlitba, Petr (referee) ; Matoušek, Antonín (advisor)
Doctoral thesis deals about primary and secondary energy legislation of the Czech Republic and proposes supplement to the legislation for renewable sources of energy. The thesis contents proposal of methodology of determination of available network capacity for connecting of new renewable sources. It analyzes current state of Czech electric power system and its possibilities for integrating new sources. It also determined available network capacity for connecting of new renewable sources in various regions of Czech Republic according to actual trend of renewable sources development. Next part of the thesis simulates impact of volatile large production of wind power plants in northern Germany in near future (year 2015). The thesis also contents proposal to the Czech power system reinforcements to eliminate negative impacts of loops flows.
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Using renewable energy sources
Vaňko, Adam ; Bátora, Branislav (referee) ; Matoušek, Antonín (advisor)
Thesis deals with the issue of renewable energy sources. It contains the description of their usage at present as well as the possibilities of their installation. When dealing with the individual types of sources the thesis states their advantages, disadvantages and the facts concerning their further development. Technical development brings us new and perspective types of renewable energy sources, the description of some of them can be found in the thesis as well. The second part of the thesis is focused on the solution of electric power supply for a holiday cottage. Authonomy photovoltaic system is suitable for its application. The system is designed to have an ability to supply electrical units in the cottage during the whole year. To be able to consider profitability of the photovoltaic system installation the thesis contains the project of low voltage energy branch connection. This branch line of 1200 m in length is properly designed and the thesis states its capital costs as well. Financial comparison of the photovoltaic system costs on the one hand and the costs of low voltage branch line on the other hand in the next 30 years of usage proves the profitability of the photovoltaic system.
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Usage hydropower potential on river Tichá Orlice
Rybka, Michal ; Procházka, Zdeněk (referee) ; Matoušek, Antonín (advisor)
This bachelor thesis solves proposal of small hydro power station. The first part deals with energy resources, especially water energy and energy use in the Czech Republic. River Ticha Orlice is characterized in other part, comparing of five weirs is necessary part. Next chapter is proposal of small hydro power station particular its electrical parts, including the connection to the distribution system. Finally, investment evaluation of proposed small hydro power station is mentioned.
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Ecological problems energetics CR
Šilar, Martin ; Bok, Jaromír (referee) ; Matoušek, Antonín (advisor)
This project presents the current status of power resources and supply in the Czech Republic and examines its different connections with ecology. The existing situation in energetics is described in the first chapter of the thesis. This chapter contains general information as well as an analysis of the progress to date related to the structure of installed power and to the amount of electricity generation and their consumption. The description of the common influence of energetics on the environment is provided in the following chapter, which also introduces the next step, namely a short survey of the characteristics of the currently used energy resources and their direct relationship to the monitored ecological problems. The practical part of the project is based on the calculation of emission in the fifteen biggest thermal power station in the Czech Republic. The calculated amounts of emission are compared with the related features of nuclear waste. The last chapter contains information about the EU legislation concerning the reduction of carbon dioxide. In this respect, there are presented also the measures planned to facilitate the reduction of carbon dioxide in Czech Republic.
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Utilization renewable energy sources inside of EPS Czech Republik
Zmeškal, Pavel ; Procházka, Zdeněk (referee) ; Matoušek, Antonín (advisor)
The purpose of this work was the analysis of current state and further development of renewable energy in the Czech Republic. And next their effects on the electricity system of the Czech Republic. On the basis of established facts has been developed actual state of renewable energy sources. The current situation is only orientation and is still changing at this time. Another objective was to evaluate the various renewable energy sources in terms of their impact on the electricity system and recoverability in the Czech Republic. In more detail were read up the conditions for the wind power plants operation and their connection to the electricity system of Czech Republic. In fine were discuss the impact of renewable energy sources on electricity system and prerequisite for their further development in the Czech Republic.
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Renewable resources of energy in Czech Republic
Trachta, Jiří ; Mastný, Petr (referee) ; Matoušek, Antonín (advisor)
The aim of the present thesis is the introduction of the issue of biomass and of its usage in the Czech Republic. The international of biomass growing as well as the waste product usage are discussed. The waste products are turned into biomass instead of being simply thrown away or burnt down. As far as the renewable resources are concered the Czech Republic is only at the begining. It is important to pay attention to the renewable resources as the amount of fossil fuels (coal, oil, gas) has been decreasing considerably. There are a few green alternative sources that are possible to be used in the Czech Republic. The biggest eletrical energy supplier in the Czech Republic, the ČEZ Company, has decided to start using water power stations in the future. Water energy has been increasingly used by hydro elektric power plants and booster power plant. Also wind energy has been used but not as much as in the countries with more appropriate climate. One of the most modern energy sources nowadays is the sun energy, to put it more clearly, the energy gained by the fotovoltaic method. The least used, but still possible way to gain energy is the geothermal energy that has been used especially in Island. In the Czech Republic, the most promising way to gain energy is the biomass that can be effectively burnt in the carrent power plants. Two main approaches to biomass usage developing in the Czech Republic have been the use of wood or the use of remnants of wood, be it wood chips, shavings, pellets etc. As I have already uttered earlier, the second source of biomass is the waste material from earlier human activites. Waste materials from households, agriculture and husbandry, muck or slurry can be made use of. This kind of biomass is burnt in the fermentation gas stations that are usually part of waste-treatment plants.
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