|
|
Comparison of heat sources for family houses
Mužík, Jan ; Lisá, Hana (referee) ; Toman, Filip (advisor)
The bachelor thesis focuses on the comparison of different heat sources for four model houses with different heat losses. The main types of fuels used for heating the houses, such as solid fuels (biomass, fossil fuels), natural gas and electricity, their advantages and disadvantages as well as their environmental impact are presented. Subsequently, a complete overview of the available technologies in the field of heating of family houses is prepared, describing their technical parameters, operation, energy efficiency, costs and environmental impact. The thesis focuses on traditional heat sources such as solid fuel boilers, local heaters, gas and electric boilers, but also on their more modern alternatives such as gasifier boilers, automatic pellet boilers, condensing gas boilers and heat pumps. In the practical part, calculations of the total costs of heating and domestic hot water heating by each heat source of all four model houses are performed. This part is complemented by tables with technical parameters of the selected heat sources and also graphical dependencies comparing their total operating costs.
|
|
|
Energy production systems designed to reduce the energy dependency of a family home
Švehla, František ; Lisá, Hana (referee) ; Toman, Filip (advisor)
This thesis deals with the issue of electricity production in family houses, focusing mainly on photovoltaic and wind power plants, but also on the use of hydroelectric and biogas sources. The main objective of the thesis is to analyse and compare methods for efficient electricity generation in households. Technical aspects such as the appropriate size and location of photovoltaic systems and wind turbines, their technical parameters, and above all issues of economic viability are examined. The most important result of the work is the identification of optimal combinations of renewable energy sources for individual households, which can lead to a significant reduction of energy consumption from conventional sources and improve the energy independence of houses. Based on the analyses and calculations, recommendations for decision-making in the selection and implementation of renewable energy sources in family houses are presented. This work provides interesting insights for homeowners, energy consultants and professionals in the field of electricity generation using renewable energy sources in family houses.
|
|
|
Research of the effect of desicants on moisture adsorption
Němec, Mojmír ; Lisá, Hana (referee) ; Elbl, Patrik (advisor)
Desiccants are special materials that can effectively adsorb moisture from the surrounding air or space. Desiccants such as silica gel or molecular sieve are often used in laboratory applications, for example to determine the properties of solid fuels. The introduction of the research section is devoted to the description of these properties. The thesis then describes the methods used to accurately determine the moisture in solid fuels. The main part of the thesis is devoted to desiccators together with desiccants, which form a significant part in the process of determining moisture in solid fuels. The experimental part deals with the investi-gation of the effect of different desiccants on the rate of air moisture depletion in the desic-cator under laboratory conditions. The moisture loss in the desiccator is measured using the SHT4x Smart Gadget, which is placed in the desiccator together with the desiccant. The out-put of the experimental measurements are the moisture uptake rate curves of different desic-cants for desiccant weights of 50 g, 100 g, 150 g, 200 g and 250 g. At the end of the thesis, the measured curves of the different desiccants are compared with each other in terms of efficiency.
|
|
|
Conventional and small modular reactors
Vintr, Lukáš ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
This thesis deals with nuclear energy. It contains a brief history of the development of this industry and provides insight into the process and control of the fission chain reaction used in nuclear reactors. It also describes conventional reactor types and the current state of their use in the world. It then mentions the research objectives set by the Generation IV International forum. Finally, it defines small modular reactors, describes a number of conceptual designs, and presents an analysis of the current state of their development, together with the possibilities of their use for the production of electricity or process heat.
|
|
|
Determination of chlorine in fuels
Saitl, Pavel ; Köbölová, Klaudia (referee) ; Lisá, Hana (advisor)
This work presents and theoretically processes several standard methods for determining the chlorine content in biofuels. The advantages and disadvantages of each method are discussed, along with their comparison to one another. Additionally, the behaviour of chlorine during the combustion process, the impacts of gaseous chlorine on combustion devices, and possible mitigation strategies are described. Within the framework of describing the behaviour of chlorine during the combustion process, both high-temperature and low-temperature chlorine corrosion, which are most pronounced in boilers burning biomass-derived fuels and solid alternative fuels, are explained. The work also includes the natural cycle of chlorine, illustrating the negative impact that escaping gases from boilers burning biomass and solid alternative fuels have.
|
|
|
Nuclear energy future development perspectives in the Czech Republic and in the world
Horák, Ondřej ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
The submitted bachelor's thesis deals with the irreplaceable role of nuclear energy and the types of reactors being designed at the same time. A large part of the work is focused on a relevant overview of nuclear reactors in the world, including those under construction. The thesis deals with the legislation of the Czech Republic in the field of nuclear safety and international cooperation between operators of nuclear power plants. In the conclusion of the bachelor's thesis, the perspective of the future development of nuclear energy in our country and in the world is mentioned. The research-synthetic method was used for processing the text.
|
|
|
Possibilities of using hydrogen in the energy sector
Holík, Michal ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
This bachelor thesis describes hydrogen energy and gives the reader an introductory look into the world of hydrogen technologies. The first part describes the production of hydrogen from fossil and renewable sources. The second part deals with the possibilities of processing and use of hydrogen in energy. The third part represents the specific application of its use.
|
|
|
Waste gas combustion
Krček, Robin ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
This bachelor thesis deals with the issue of using waste gases as fuel. The first part is focused on the production processes, properties and composition of selected waste gases. The following part is an overview of the methods used in the treatment and removal of pollutants from the gas. Finally, technologies that generate electrical, thermal or mechanical energy by burning waste gases are summarized.
|
|
|
New generation of biofuels
Pražák, Vojtěch ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
This bachelor's thesis deals with different generations of biofuels. Their advantages and disadvantages and problems associated with their use in practice. The first part of the theses focuses on legislation and acquaintance with the issue of biofuels as a whole. The second part is focused on acquaintance and description of individual biofuels with examples of use in practice. At the end of the work there is an analysis of individual generations, representation in the fuel market and their efficiency.
|
|
|
Monitoring the effect of sample treatment in determining selected properties of biofuel
Štenclová, Kristýna ; Lachman, Jakub (referee) ; Lisá, Hana (advisor)
Diploma thesis is focused on the treatment of biofuel prior to combustion and effect of this treatment on the biofuel characteristics. The first part is a review of literature encompassing characteristics of fuel, preparation of samples, methods of analysis of individual characteristics and a presentation of various types of mills. The second part of thesis is experimental. It is an analysis of sample characteristics under various mill settings with regard to the temperature in the mill during grinding.
|
guest ::
