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Fine particles and air-cleaning
Bírošíková, Martina ; Sitek, Tomáš (referee) ; Poláčik, Ján (advisor)
This bachelor thesis deals with issues with fine and ultrafine particles, also called particulate matter, which is strongly associated with enviromental problems and negative effect on human health, especially cardiovascular diseases. The aim of this work is to describe the formation and characteristics of fine particles produced by biomass combustion. The experimental part firstly explains funcional principle of used devices and then compares measured concentrations of ultra fine particles produced by combustion of spruce and beech wood. In the end, several posibilites how to eliminate the air pollutants are presented.
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Gas Supply and Underground Gas Storages in Slovakia
Galbavý, Mário ; Poláčik, Ján (referee) ; Lisý, Martin (advisor)
The aim of this bachelor thesis is to describe the situation regarding the storage and supply of natural gas in Slovakia. Thesis is divided into 4 chapters. The first chapter deals with natural gas from a general point of view, from its properties to its possible use. The second part describes the situation of supplying Slovakia with natural gas. The third part deals with the ways of storing natural gas and individual underground reservoirs located in Slovakia. The final part describes the reasons for the storage of natural gas and the possibility of measures that can ensure the security of its supply.
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House energy solutions using renewable energy sources
Sabo, Martin ; Musilová, Petra (referee) ; Poláčik, Ján (advisor)
This bachelor thesis discusses the role of renewable sources of energy in energetics of a family house and technologies providing this possibility. Special care is given to power production, heating and air conditioning. The issue of low-energy and passive houses is described in the beginning of the thesis, leading to acknowledgement with different types of energy sources. Analytic part of the thesis contains general information about ways of heating and power production using renewable sources of energy. Different ways of ventilation are introduced and suitability of specific technologies assessed. The practical part describes design of ventilation and heating unit in an experimental house.
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Emissions from the burning of garden waste
Kuznetsova, Oksana ; Poláčik, Ján (referee) ; Baláš, Marek (advisor)
This bachelor thesis deals with the issue of production of gaseous and solid pollutants in the incineration of garden waste. The aim was to carry out and evaluate the experiment. During the evaluation, it was found that the incineration of garden waste produces many times more emissions, than the incineration of wood in the boiler. The reason for the high emission concentrations was the fuel composition and the combustion process. Furthermore, fine particles in the range 17.5–532.8 nm were investigated. In the theoretical part, a literary search was created, which was based on Czech and foreign professional literature.
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Hydrogen technology as a clean energy solution
Pavliska, Vojtěch ; Šnajdárek, Ladislav (referee) ; Poláčik, Ján (advisor)
Gradual transition towards renewable sources of energy should be one of the main concerns of today’s society. This does not only concern the production of electricity but also automotive industry. Transportation is the main cause of air pollution in bigger cities and is also responsible for a solid percentage of green-house gases production. For these reasons, it is key to seek more sustainable and eco-friendly ways of motorized vehicles propulsion. Artificially produced hydrogen is one of the more promising alternatives to fossil fuels. This thesis describes the application of fuel cell technology for city busses. It presents some existing examples of hydrogen busses and their comparison with common means of mass transportation.
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Risks and Impacts of Black-out in Czech Republic
Tomášková, Kateřina ; Poláčik, Ján (referee) ; Lisý, Martin (advisor)
Electricity is an integral part of our daily life. Only a small problem in the power system and a small current outflow can cause us a lot of inconvenience, let alone a wider outflow of elektricity. The aim of this thesis is to define the risks of black-out for the Czech republic. Then perform resers of foreign experience with the black-out and on the base of these experiances, outline the possible impacts for the Czech republic, in case that this situation would occur once in our country.
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Efficiency of hydrogen production by electrolysis
Pelán, Ondřej ; Špiláček, Michal (referee) ; Poláčik, Ján (advisor)
This thesis summarizes the basic information abouth hydrogen, its production, storage and energy utilization. The emphasis is put on alkaline electrolysis, the factors affecting its effeciency and the results of applying pulsating direct current. The end of the thesis attempts to experimentally prove the possibilities of regulating the performance of the alkaline electrolyzer.
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Impact of Operation Parameters on Fine Combustion Particles Concentration in the Flue Gas of Biomass Boilers
Poláčik, Ján ; Masaryk, Michal (referee) ; Adamec, Vladimír (referee) ; Pospíšil, Jiří (advisor)
This work deals with the impact of operating parameters on fine combustion particles formation in the flue gas of biomass combustion device. The research part of the work describes the properties of fine particles, its basic division, impact on human health and the environment. The basic knowledge of the influence of biomass combustion process on fine particles production up to 1 µm in size is summarized. The main part describes the experimental setup for evaluating the size distribution of fine particles. The following section describes the experimental setup with measured results for various combustion parameters in laboratory combustion, automatic boilers, as well as in the manual wood-burning combustion device. The main parameters which were tested were combustion temperature, oxygen amount, type of fuel and geometry of the burned biomass. The impact of individual parameters on the formation of the fine particles is evaluated. The final part of the thesis summarizes the ways in which it is possible to significantly influence the emissions of fine particles by the appropriate choice of combustion operating parameters.
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Environmental aspects heating
Vypušťáková, Veronika ; Poláčik, Ján (referee) ; Baláš, Marek (advisor)
The topic of this bachelor´s thesis is ecological impacts of heating. The first part contains information on selected pollutants that adversely affect the environment and human health. The second part is devoted to the comparison of pollutants in boilers for solid, liquid and gaseous fuels. The last third part focuses on proposals for measures to eliminate undesirable effects of pollutants.
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Fine combustion particles produced from real burning of biomass
Pažourek, Josef ; Poláčik, Ján (referee) ; Pospíšil, Jiří (advisor)
This bachelor’s thesis deals with fine combustion particles produced from real burning of biomass. The first chapter is about biomass, combustion devices in which biomass can be combusted and last but not least polluting substances, which are created during the combustion. In experimental part the measuring equipment that measures fine particles is presented. After that the results from measurement are evaluated.
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