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Comparison of heat sources for family houses
Barvíř, Ondřej ; Lisá, Hana (referee) ; Toman, Filip (advisor)
The bachelor thesis focuses on heating sources for residential houses with varying heat losses and is divided into two parts. The first theoretical part introduces various heating sources for residential houses. The second practical part economically compares heat sources on specific residential houses with different heat losses.
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Li-ion battery recycling
Bělaška, Patrik Vojtěch ; Lisá, Hana (referee) ; Preisler, Lukáš (advisor)
The bachelor’s thesis is focused on the recycling of li-ion batteries. In the first part primary and secondary battery cells are described together with their principle, composition, and materials. In the second part, lithium-ion cells, their principle, types of cathode and anode materials, electrolyte, separator, and casings are described in detail. The third part deals with battery pre-treatment and recycling technologies which include the most used hydrometallurgy, pyrometallurgy and less used direct recycling along with their individual types. The next part describes the mining options, the price of individual materials, largest producers, and weight comparisons before and after recycling of a selected battery. The last part focuses on the possibilities of battery recycling in the Czech Republic, the amount of waste batteries and current state of legislation.
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Study of return of heat sources for a family house
Pavlík, Michal ; Lisá, Hana (referee) ; Toman, Filip (advisor)
This bachelor’s thesis focuses on the calculation and selection of the most suitable heat energy source for a selected family house. A brief overview of these heat energy sources serves for a general understanding and clarifies their basic functions. By calculating the heat loss through walls, heated and unheated rooms, functional parts of the building, the ground, and ventilation, the total energy required for heating the house for one year was determined. Additionally, the total energy needed to heat water for 4 people every day throughout the year was also identified. Based on these collected values, four energy sources were selected and subsequently compared with each other in uncluttered graphs. The most suitable heat source was chosen after an economic analysis of return on investment.
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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.
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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.
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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.
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Emissions of solid pollutants
Strnad, Ondřej ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
The thesis deals with issue and properties of solid particles of anthropogenic origin. It describes the principles and technologies for removing them from the flue gas flow and avoid-ing leakage into the atmosphere. It focuses on types of separators, especially mechanical sepa-rators. The work includes an experimental part involving obtaining data characterizing the cyclone separator.
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Production of Unmeasured Emissions by Combustion in House Boilers
Chlubna, Martin ; Lisá, Hana (referee) ; Lisý, Martin (advisor)
This bachelor thesis deals with the production of non-monitored pollutants during combustion in domestic boilers. The theoretical part is made up of a research study dealing with pollutants and their legislation. In the experimental part combustion tests for coal and wood of different moisture are made. In conclusion, the measurement results are evaluated on the basis of chemical analysis.
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Determination of selected hormonal drugs using liquid chromatography with mass detection
Jurasová, Lenka ; Lisá, Hana (referee) ; Vávrová, Milada (advisor)
This master’s thesis is focused on optimizing of the analytical method for the determination of selected drugs - estrone, estradiole, ethynylestradiol, estriole, diethylstilestrole, norethindrone, mestranole and progestrone in wastewater using liquid chromatography with mass spectrometry (LC/MS). Solid phase extraction (SPE) using Oasis HLB cartridges was chosen extraction method Different mobile phase, temperature, flow rates and mobil phase gradient were during the process of optimization. Samples of the wastewater were collectedat the inflow and outlow of the wastewater treatment plant in Břeclav and in University of Veterinary and Pharmaceutical Sciences Brno. Drugs were isolated from wastewater and preconcentrated using solid phase extraction (SPE) and determined by high performance liquid chromatography with mass spectrometric detection (HPLC/MS).
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Emissions from biomass combustion
Vaněk, Michal ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
The thesis deals with harmful substances originating as products of biomass combus-tion and possibilities of reducing their emissions from boilers for household heating. First of all, biomass is introduced and a description of important fuel properties in terms of its combustion is given. Secondly, the characteristic of the combustion process and origination mechanisms of individual substances are presented. This is followed by a description of the properties of these substances and their impacts on human health and the environment. The purpose of the next chapter is to present the reader with current legislation addressing the emissions of small boilers. Then a separate chapter describes possible methods that can be used to reduce emissions of these devices. Finally, several measures in the form of modifications and devices, capable of reducing harmful emissions of small boilers are given.
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