National Repository of Grey Literature 12 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
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.
Thermal stability of the biomass combustion process
Grygar, Jan ; Špiláček, Michal (referee) ; Poláčik, Ján (advisor)
This bachelor thesis is focused on fne particles, which are produced by small combustion units, and their reduction. The frst chapter deals with the issue of fne particles, their creation, composition and their impact on man and the enviroment. The last chapter deals with the design of solution for reducing of emissions of small biomass combustion units.
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.
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.
40/5000 Fine particles produced by the stove
Škvařil, Ondřej ; Baláš, Marek (referee) ; Pospíšil, Jiří (advisor)
This master thesis deals with problematics of fine particles produced during combustion in fireplace stoves. The theoretical part is focused on the analysis of the atmosphere, health consequences, solid pollutants, the formation of particles (origin), particle separation and how they are regulated by laws. Theoretical section of the thesis addresses analysis of biomass and its combustion. In the applied section are listed given methods of the particles measuring according to regulations, common errors during measurement and methods of identification of measured fine particles. Then follow specific measurements of the formed very fine particles produced by the SMPS method. Subsequently, the results of the measurement are evaluated and summarized in the conclusion.
Fine particles produced by the combustion process
Bunček, Patrik ; Chýlek, Radomír (referee) ; Pospíšil, Jiří (advisor)
The bachelor thesis deals with the issue of fine particles. The introductory chapter is focused on the general overview, formation and effect of fine particles on the human body. The following chapters aims to introduce combustion process and use of biomass. The experimental part of the thesis reports on results, evaluation and determination of fine particle formation for different environments and conditions.
Optimization of types, granulometry and fine particle shape for special concrete
Jobánek, Jaromír ; Hela,, Vlastimil (referee) ; Hela, Rudolf (advisor)
This diploma thesis is focused on optimization of particle size distribution using concrete additions. To design a concrete of excellent properties, it is often necessary to achieve a higher packing density of the mixture by designing a suitable particle size distribution curve. Concrete with special properties and various types of powder additions are also described.
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.
Ultrafine combustion particles
Sitek, Tomáš ; Skála, Zdeněk (referee) ; Skála, Zdeněk (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with issues of fine and ultrafine particles formation during thermal decomposition and combustion of biomass. An introduction is devoted to a utilization of biomass as fuel. A following part describes the gas products emerging generally during combustion process. A current emission and air pollution situation in the Czech Republic as well as the health impacts of solid pollutants on human are also mentioned. Within an experimental measurement three basic factors that have impact on fine particles formation during combustion of beech wood (i. e. oxygen content in combustion atmosphere, type of the sample and size of the sample) were thoroughly analyzed. Attention was paid to a progress of thermal decomposition and combustion of sample with respect to the particles formation. Finally, a measurement of fine particles amount was accomplished in a real boiler successively with four different biomass pellet types.
Feeding of Fine Sodium Bicarbonate Particles into Flue Gas for SO2 Capture.
Zach, Boleslav ; Pohořelý, Michael ; Šyc, Michal ; Kulaviak, Lukáš ; Samusevich, Oleg ; Moško, Jaroslav ; Svoboda, Karel ; Punčochář, Miroslav
The paper focuses on the problematics of feeding of fine sodium bicarbonate particles into flue gas in laboratory scale with regard to particle size and rheological properties of the material. Subsequently, a feeding system is described.
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