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Nuclear power plants
Krakovský, Matej ; Špiláček, Michal (referee) ; Milčák, Pavel (advisor)
The bachelor´s thesis explains different types of nuclear reactors and their fuel and safety characteristics. The thesis is complemented with history and description of nuclear powerplants in Slovakia. There are mentioned some of the experimental projects, whose usage is expected in the future. In the beginning are described fundamentals of nuclear energetics and nuclear fission chain reactions.
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Analysssis of Mixtured Pellets Combustion
Somora, Jakub ; Milčák, Pavel (referee) ; Lisý, Martin (advisor)
The bachelor thesis focuses on combustion of mixed pellets compared to combustion of mixtu-re of monomaterial pellets. The research part deals with fuel properties of pellets as well as problems arising from the combustion process. It describes the major impact of sintering at biomass energy use, which is also related with the composition of fly ash. It also contains a comparison of the basic parameters of wood and alternative pellets, as well as the emission which are created in process of biomass combustion. The experimental part deals with the ana-lysis and comparison of combustion of mixed pellets as compared to the mixture of monoma-terial pellets. It includes monitoring of emission and solid pollutants content. At the end, the measured data are evaluated and compared to the current standards.
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Design of a heat exchanger in a nuclear power plant
Kocanda, Tomáš ; Kudela, Libor (referee) ; Milčák, Pavel (advisor)
This bachelor thesis focuses on the design of heat exchange in nuclear power plant, more specifically on low-pressure heater 2. The introduction of bachelor´s thesis deals with the introduction of nuclear energy and nuclear power plants. The following chapters describe low-pressure regeneration as well as low-pressure heater. In the last part of the work, the heater is calculated from the entered values and values subtracted from the overall thermal scheme of the secondary circuit of the Dukovany nuclear power plant.
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Conceptual design of secondary and tertiary circuit for a new nuclear source
Valíček, Roman ; Kracík, Petr (referee) ; Milčák, Pavel (advisor)
The aim of this thesis is to create a conceptual design of the secondary and tertiary circuit of a new nuclear power plant in our country, which is preceded by a brief search of particular generations of nuclear reactors. The VVER-1200 reactor became the model for the new nuclear power plant. There was designed a heat diagram containing primary components in this work. After that, there was the balance calculation and calculation of parameters of the main devices of the proposed scheme such as condenser, low-pressure and high-pressure regeneration exchangers and steam generator.
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Biomass gasification with carbon dioxide
Klíma, David ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
This master’s thesis deals with the process of biomass gasification using mixture of CO and O2 as gasification agent. First part describes the gasification process itself, used devices, gasification medium and its influence on the generated gas. Following section covers the experimental part of the work, which is focused on change properties of the generated gas using different ratios of CO2, O2, H2O and air in the gasification mixture. This part also includes processing and evaluation of the results.
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Dust separators for small power boilers
Szweda, Martin ; Baláš, Marek (referee) ; Milčák, Pavel (advisor)
This thesis is divided into two parts. The first part of this thesis contains research on pollutants, separators and its legislation, while this part is focused on dust particles and their separation behavior. This is followed by a search on the different types of separators that can be used for small power boilers. The second part is followed by an experimental part, where the practical efficiency of the given separator is verified and then the measured values are compared and the result is evaluated. The results are used to determine whether the separator used is suitable for the separation of biomass for low-power boilers.
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Possibilities of nuclear energy in the field of energy and media production
Svoboda, Filip ; Lisý, Martin (referee) ; Milčák, Pavel (advisor)
The main objective of this thesis is the possibility of combining nuclear power plants with energy storage technologies (specifically hydrogen production) and the subsequent balance of electricity and hydrogen production when combining these hybrid systems with photovoltaic power plants. With large installed capacities of renewable energy sources, it is necessary that other sources in the energy portfolio are flexible and then it is possible to regulate the supply of electricity from these sources to the electricity grid (for example, reducing the output of a steam power plant for natural gas on sunny and windy days). The regulation of a nuclear power plant is limited and therefore it is advantageous to start using it, for example, in a hybrid system with a PEM electrolyser. Then the nuclear power plant can produce electricity at a constant rate and only regulate the amount of electricity that goes to the grid or to the electrolyser.
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Turbogenerators in nuclear power plants
Oulehla, Jan ; Kracík, Petr (referee) ; Milčák, Pavel (advisor)
The aim of this thesis is to prove the viability of analytical methods for evaluation of thermodynamical properties of steam in the turbogenerators by calculation and comparison with the real data from NPP Dukovany. Calculation is seconded by a brief introduction to the principle of electricity generation in nuclear power plants and description of primary, secondary and terciary circuit of NPP Dukovany. Substantive part is also analysis of often used turbogenerators and their comparison with those used in classical thermal power stations.
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Losses in central heat supply pipes
Stupka, Jaroslav ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
This bachelor thesis is dealing with heat loss in central heat supply pipes. First of all, research of pipe insulation, heating networks and pipe installation has been done. Then, the section of heating network has been described. After that, heat loss has been calculated separately for each dimension as well as type of insulation and pipe installation. It has been also evaluated during heating and out of heating season. In the end, total heat loss in the section of heating network using summation of that particular heat loss has been quantified.
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Condenser design of a nuclear power plant
Hejduk, Michal ; Šnajdárek, Ladislav (referee) ; Milčák, Pavel (advisor)
The topic of this master´s thesis is the design of the steam generator for a nuclear power plant with VVER 440 reactor. The first part of this thesis describes a brief history of nuclear research, which is followed by an overview of nuclear reactors used now. The next part deals the types of steam the types of steam generators used today with their basic elements and design recommendations. The last and final part is the design of a steam generator for nuclear power plant with a VVER 440 reactor. Above all, is the thermal calculation of the steam generator and behaviour of steam generator depending on the reactor power. The design solution of steam generator and its strength calculation. The last part of the steam generator calculation the pressure loss of the steam generator is investigated.
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