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An emission reduction systems for vehicles with gasoline engines
Filip, Josef ; Fridrichová, Kateřina (referee) ; Böhm, Michael (advisor)
This bachelor thesis deals with ways for emission reduction of passenger cars with an ignition engine. The introduction describes the principle of combustion, the methods of preparation of the ignition mixture and pollutants that arise during the combustion. In the main part of the work, the individual specific provisions for reducing emissions used in modern vehicles are analyzed in detail. Further the examples of current emission systems for several selected cars are presented. All the findings are summarized in the following chapter. In the next part, own configuration of the emission system is described in detail, which is designed with the regard to maximum efficiency in reducing emissions. The summary together with the evaluation of the current situation and the outline of the possible direction for further development in this area are in the last part of this work.
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Acoustic emissions of buildings
Smažinka, Josef ; Uher, Pavel (referee) ; Rubinová, Olga (advisor)
The diploma thesis deals with acoustics with the main focus on acoustic emissions of buildings. The first part of the thesis aims to familiarize the reader with the field of acoustics as a whole. They will learn the basic concepts, quantities and relations that exist in acoustics. In the second part I focus specifically on the sources of noise in buildings and their surroundings, how can excessive noise affect health, what standards must be met and how to prevent excessive noise. The last part is devoted to practical measurements in the field, which is focused on real sources of noise in the city of Brno. The aim of this measurement is to compare the noise generated by buildings with other noises in the urban environment.
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The tri-band fluorescent reader
Škrabalová, Denisa ; Čolláková, Jana (referee) ; Dostál, Zbyněk (advisor)
This bachelor thesis deals with the issue of laboratory testing and design of an optical instrument called a tri-band fluorescent reader, which is designed for fluorophores Alexa Fluor 488, Alexa Fluor 555 and Alexa Fluor 647. It contains a theoretical part with key knowledge not only in the natural sciences, such as physics, chemistry, biology, but also the current technical capabilities that are necessary for the practical part. In the practical part is drafting the objectives of the thesis, which are the measurement and evaluation of the samples examined using a monochromator, acquisition and evaluation of images using the existing system, build spectral analysis throughput, create a simulation of custom solutions and create a system engineering design. The mechanical model of the reader assembly was made after measuring the samples and the device and creating the simulation.
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Boilers for solid fuel
Hotový, Michal ; Štelcl, Otakar (referee) ; Baláš, Marek (advisor)
The task of this bachelor thesis is write up a research about solid fuel boilers and describe solid fuels. In second part of bachelor thesis I make an experiment. I measure an emission and efficient burning wood and coal.
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Impactor for fine particle collection
Paulíková, Kateřina ; Šnajdárek, Ladislav (referee) ; Pospíšil, Jiří (advisor)
This master thesis provides an overview of fine particles contained in the air and possibilities for their analysis, measurement and capture. In the beginning, the fine particle's size and origin is described. Then, the influence of fine particles on human health is stated. Next, methods of air analysis and fine particle's measurement are presented. Legislation for emissions and immissions in the Czech Republic is summarized. Finally the selected types of impactors are introduced. The practical part consists of three chapters. First chapter contains the fundamental calculation procedure and its subsequent refinement. In the following part the comparison of the calculation procedure with the parameters of the commercial impactor is provided. Lastly, the design of the impactor is created for the specified parameters using the developed calculation procedure.
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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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Initial Public Offerings in the Czech Republic
Musil, Jakub ; Ptáček, Roman (referee) ; Meluzín, Tomáš (advisor)
The bachelor thesis focuses on the initial public offering (IPO) in terms of key factors that affect the company when considering issues of its securities. The first part contains an explanation of theoretical concepts that are connected with the IPO and are important for its successful realisation. The second part examines selected analyzes that describe the readiness to go public in a selected company. The last part of the work formulates recommendations for entering the capital market based on found information.
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Pollution control strategies and techniques for combustion processes
Kunc, Vlastimil ; Chlápek, Petr (referee) ; Bělohradský, Petr (advisor)
Bachelor’s thesis deals with the problems of combustion process. The work gives the overview and the description of individual design parameters of the combustion facility. The analysis of the influence of design parameters on emissions formation is followed by the description of individual kinds of emissions and their impact on the environment. Next the most used reduction techniques are described. The work is closed by the overview of the emission limits in the Czech Republic.
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Automatic pellets boilers
Bureš, David ; Brázdil, Marian (referee) ; Baláš, Marek (advisor)
The thesis is divided into two main parts. The first one deals with the research study about pellets used as a fuel, and about automatic pellet boilers. The second part describes experimental measurements on the boiler Verner A251.1, followed by calculation of the efficiency and a comparison of emission, using wood pellets of different diameters.
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Range Extender Engines for Electric Cars
Kroupa, Jiří ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor thesis is about range extender engines for electric cars with focusing primarily on piston combustion engines. In the first part, reasons for using range extender are indicated and the principle of use in powertrain of electric vehicle is explained. Requirements for a combustion engine working as range extender are stated with their impact on development parameters of this engine. The second part describes manufacturers with their range extenders. Three engines are described in detail with emphasis on development, technical parameters and operating strategy. Another range extenders with their basic parameters are mentioned too. Conclusion refers about benefits of using range extenders and their future development is estimated.
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