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Assessment of energy storage systems - Power to gas
Šojat, Filip ; Zlevorová, Tereza (referee) ; Baláš, Marek (advisor)
This bachelor's thesis is focuses on the issue of electrical energy storage using Power to Gas technology. The thesis is divided into two parts: a research part and a practical part. The research part provides a detailed description of the basic principles of Power to Gas technology, hydrogen production, and its potential applications in various fields. The practical part consists of a hypothetical study on obtaining electrical energy from solar panels and subsequently storing it as hydrogen. Various storage methods are compared.
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The design of nuclear power plant steam generator
Zimmermann, Jakub ; Baláš, Marek (referee) ; Milčák, Pavel (advisor)
The bachelor's thesis consists of three parts. The introductory research section briefly describes the history of nuclear energy, followed by an analysis of the three circuits (primary, secondary, and tertiary) in a nuclear power plant. The second part provides a detailed description of various steam generators used worldwide. The third and main part of this bachelor's thesis covers the thermal calculation of a steam generator, focusing on determining the heat exchange surface area and the length of heat exchange tubes inside, followed by a comparison of steam generator sizes based on their number of connections to a single nuclear reactor block. At the end, I modelled a model and created a diagram of the steam generator based on the results from the thermal calculation.
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Design of a heat exchanger for the recovery of waste heat from a sewerage system
Novák, Filip ; Baláš, Marek (referee) ; Toman, Filip (advisor)
The theoretical part of bachelor thesis was focused on heat exchangers and wastewater heat recovery systems. In theoretical part, everyday applications and practical notes of heat exchangers and recovery systems were emphasized. In practical part of thesis, heat calculation of double tube heat exchanger was carried out for operation in winter months. Using --NTU method, heat output of exchanger was recalculated for each month separately, from which, the total heat recovered in the course of year was calculated. Last part of the thesis was focused on a economical aspect of the heat exchanger (manufacturing and maintenance costs). This amount of money was compared with cost of water heating using heat pump, gas boiler and automatical wood pellet boiler.
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Design of a flue gas exchanger for the use of condensation heat from flue gas
Čulík, Martin ; Burda,, Radim (referee) ; Baláš, Marek (advisor)
The subject of this thesis is the design of a flue gas exchanger for the use of condensation heat from flue gas. The first part of the thesis is rather theoretical and presents the main issues of condensation and its characteristics. Next, the necessary calculation relations for a complete thermal-hydraulic calculation are given. Using this knowledge obtained from the theoretical part, a flue gas exchanger is then designed in the practical part. Furthermore, for the same parameters, the exchanger is calculated in the PPSD program and both approaches are compared. Finally, a sensitivity analysis will be performed.
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Replacement of existing heat exchanger
Vaculík, Štěpán ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This thesis deals with the possibilities of replacing an existing inefficient heat exchanger with a new one. In the first theoretical part a research of heat exchanger types, their operational features and suitable application is carried out. In the second practical part, the control calculation of the existing bundle heat exchanger with U-tubes is performed first, followed by the thermo-hydraulic design of a new bundle heat exchanger with straight tubes and a new plate heat exchanger. In the last part of the work, a comparison and assessment of which of the alternatives is the most suitable is made.
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Parametric study of air cooled heat exchanger
Tichý, Marek ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This diploma thesis deals with air-cooled heat exchangers. Firstly, these types of heat exchangers are described theoretically in many different variations. The following part of the diploma thesis is focused on thermohydraulic calculations that aim to determine the resulting heat transfer coefficient and the necessary heat exchange surface. This calculation depends on the chosen piping and its geometry. The design of a specific heat exchanger follows the calculation, which is documented with a projection drawing. In the following section, a parametric study is conducted to investigate the dependence of heat exchanger properties on changes in its geometry.
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Study of the possibilities of hydrogen recovery from generator gas by steam reforming
Imrichová, Anna ; Milčák, Pavel (referee) ; Baláš, Marek (advisor)
This thesis studies the possibility of generator gas being used as a source of hydrogen with the help of steam reforming. In the first part, gasification, as a method of producing generator gas, and steam reforming, including studies devoted to the production of hydrogen by similar methods, are researched. Then following experimental part is aimed to verify the assumed influence of selected parameters on the increase of hydrogen in the gas by steam reforming. These parameters are: the degree of calcination of dolomite, as the used catalyst, and its amount, the temperature in the catalytic filter and the amount of steam during gasification. The results are graphically processed and confirm the expected increase of hydrogen depending on the temperature and degree of calcination. At the same time, there are no big changes using different amounts of used catalyst and steam.
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Heat exchanger design
Los, David ; Lachman, Jakub (referee) ; Baláš, Marek (advisor)
This bachelor's thesis deals with the design of a heat exchanger for the use of residual energy from flue gases from fireplace stoves. Part of the work is a brief description and overview of heat exchangers used in industry, including a chapter on flue gas exchangers. The work also includes a simple conceptual design of the heating circuit of a family house and the following choice of heat exchanger type. The conceptual design is followed by the design of the geometry of the exchanger, the determination of the size of the heat exchange surface and the calculation of pressure losses. The thesis also includes drawing documentation.
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Energy saving study for family house
Procházka, Vojtěch ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This final thesis deals with the design of measures against heat loss of a family house. These losses depend on the quality of the elements that are used to prevent unwanted heat escape. In the first part, the basic characteristics of these elements and a description of heat sources for a family house are mentioned. In the next part of the work, heat losses are calculated for a specific house and measures leading to their reduction are proposed. Finally, an economic evaluation of the proposed changes is carried out.
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The computation of nuclear power plant heat exchanger
Fialová, Ludmila ; Baláš, Marek (referee) ; Milčák, Pavel (advisor)
The theoretical part of my thesis analyses the topic of heat exchangers in nuclear power plants. A summary of each nuclear power plant’s circuit and its main is conducted. Furthermore, the term heat exchanger is introduced. The function and elemental construction of some significant types of heat exchangers is analysed. Their function in nuclear power plants is also described. In the computational part of this thesis, values describing parameters of the heat exchange, the heat balance of the exchanger and its main construction dimensions are calculated for a particular heat exchanger – tube and shell condenser.
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