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Possibilities of using small modular reactors in the heating industry
Duchoň, Jan ; Šnajdárek, Ladislav (referee) ; Milčák, Pavel (advisor)
This bachelor thesis deals with nuclear energy, mainly focusing on small modular reactors and their possible use in heating industry. The first chapters are focused on history of nuclear energy, explaining key concepts and describing nuclear reactors and their principle in general. One of the crucial topics, covered in the following section are small modular reactors, key examples of SMRs, their wide range of uses and comparison of advantages and disadvantages of this type of reactors. Next chapter consists of introduction to heating industry, description of situation in Czech republic and analysis of Czech heating plants. The final chapter uses acquired information to assess potential use of SMRs in Czech heating industry as a replacement for fossil fuel heating plants.
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Thermal-hydraulic calculation of heat exchanger
Zemach, Vít ; Toman, Filip (referee) ; Milčák, Pavel (advisor)
This bachelor thesis deals with thermal-hydraulic calculation of heat exchanger. The first part describes the basic types of heat exchangers considering their construction and utilization. In the second part of the thesis, a complete thermal calculation of the designed heat exchanger is presented. This exchanger is shell and tube heat exchanger with straight tubes. The last part of the thesis is hydraulic calculation of pressure losses. All calculations are made in the EES program.
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Design of a pump and pipeline to ensure higher safety of the nuclear power plant
Ošťádal, Michal ; Milčák, Pavel (referee) ; Pospíšil, Jiří (advisor)
The main goal of the diploma thesis is to design the hydraulic part of the new piping system, which is added to the existing project of the Dukovany Nuclear Power Plant. At the beginning of the work is theoretical basis for the design of the hydraulic part. The next part is the selection of piping material for aggressive refrigerant with subsequent verification of the pipe wall thickness. The piping system is designed with specific components from the companies SIGMA GROUP a.s., ARAKO spol. s.r.o. and ARMATURY Group a.s. In the last part, hydraulic solution is developed and commented using the excel program. The piping system is processed into the drawing documentation including bill of materials.
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Alternative Biomass Fuels Properties
Krejčiřík, Jiří ; Milčák, Pavel (referee) ; Lisý, Martin (advisor)
This bachelor thesis follows up attributes of alternative fuels made from biomass and burning them in home combustion equipment with taking into account the process of creating emissions of solid pollutants. There can be found definition of solid alternative fuels with descripition of how are they made and also their attributes as fuels in the first chapter of this thesis. In the second part can be found description of burning alternative fuels made from biomass with taking into account the process of creating emissions. The third chapter of this bachelor thesis is focused on experimental testing of fuel attributes of alternative fuels made from biomass. There is also practical test of creating emissions with focus on creating solid pollutants in this part.
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Accumulation of electricity for a source with unstable production
Petrenec, Jan ; Milčák, Pavel (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with possibilities of accumulation of electricity generated by renewable sources with unstable production. Several goals were set by an assignment of this thesis. Within a research, current trends of the accumulation are presented in detail on examples of specific representatives with their technical parameters and economic possibilities. Further, an unstable source of electricity – the wind farm of three power plants Multibrid 5000 with all its parameters and operational details is defined for purposes of individual designs of accumulation systems. Firstly, the detailed design of an advanced compressed air energy storage (A-CAES) is realized. It includes a thermodynamic calculation of chosen components, their partial technical solutions, a financial evaluation of investment and a determination of theoretical payback period. Furthermore, the design for accumulators Tesla Powerpack is realized. It contains a calculation of individual system parameters, a financial evaluation of investment and a determination of theoretical payback period. Last part of the thesis is dedicated to a comparison and an evaluation of the achieved results of both realized methods of the electricity accumulation. In the end, A-CAES is chosen as more perspective variation.
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Atmosferic gasification of biomass by the addition of oxygen and steam
Vypušťáková, Veronika ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
The topic of master´s thesis is atmosferic gasification of biomass by the addition of oxygen and steam. The theoretical part is devoted to the description of biomass, process of gasification, kinds of gasification reactor and product gas. Further experiments are devised depending on the gasification medium and output temperature. In this case, the key aspect is the steam addition control. In the practical part, these experiments are performed in a fluidized bed reactor. Resulting values from samples of gas and tar are subsequently processed and evaluated.
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Analysis of the heat utilisation from biogas stations for heating
Kareš, Martin ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
This bachelor thesis deals with the analysis of the use of heat from biogas stations. The first part describes the production of biogas, its combustion efficiency and the development of energy production thus obtained. In the second part it deals with individual solutions of the application of heat produced and in the last chapter it analyses the balance of the specific solution of heat transfer and its impact on the environment.
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Comparison of energy mixes
Kadáková, Nina ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
This research type paper is focused on the comparison of the energy mix of Czech Republic with the energy mix of other three states, Slovak Republic, Italy and Norway. In this paper there are described energy sources which the chosen states use for production of electricity. The total installed outputs of the power plants in various years, production and consumption of electric energy and the source ratio for production of electricity are also stated, based on which the final compression is created.
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Analysis of the secondary circuit of the VVER 440 block
Černý, Michal ; Kracík, Petr (referee) ; Milčák, Pavel (advisor)
The main aim of this thesis is the model design and control the secondary circuit block VVER 440. The search part of my work is a description of the secondary circuit. In the first part of the calculation is performed for the rated secondary circuit. The second calculation part focuses on the calculation circuit of the secondary for the reduced, influenced by shutting down one steam generator.
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Thermal Losses of the Biomass Boiler
Suchánková, Lenka ; Milčák, Pavel (referee) ; Kracík, Petr (advisor)
The bachelor thesis focuses on the heat loss of the solid fuel boiler, especially on the loss of heat conduction and transfer to the surroundings. In order to minimalize thermal leaks through the boiler walls, materials with good isolation capabilities must be selected when designing. In Microsoft Excel, a universal mathematical model was created to calculate the heat flux flowing through the flat wall of the boiler, from which temperatures can be obtained on the inside of the wall. The work describes the calculation method on which the model is based and its correctness is verified on an experiment based on sensing of temperature fields of wall sur-faces of equipment burning biomass by thermal camera. The model can be used for a wall with up to 9 layers of material, where the wall can be cooled (heat loss) by air and water.
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