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Design of combustion chamber 30 kW for gaseous fuels
Rychter, Aleš ; Hudák, Igor (referee) ; Skryja, Pavel (advisor)
Master thesis deals with design of combusting chamber for gaseous fuels with predicted thermal output less than 30 kilowatts. Designed equipment will be used as a generator of flue gases with required parameters further used for experimental catalytic unit. Due to the need of draft creation inside the combustion chamber and exhaust pipe is master thesis also deals with design of ejector nozzle, which will be used for this purpose. Opening chapters of this work, considering a theoretical part, are focused on basic classification of combustion chambers and industrial burners. Next and main chapter is dedicated to main goal of this work, which is combustion chamber design, containing necessary calculations divided into balance calculation and construction design. Final chapters deals with above mentioned calculation of ejector nozzle ensuring sufficient draft and also sufficient cooling of flue gases incoming from catalytic unit.
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Emissions of medium pressure steam boilers for gaseous fuel
Zavadil, Jan ; Milčák, Pavel (referee) ; Šnajdárek, Ladislav (advisor)
The aim of this the Bachelor Thesis is a description of a medium steam boiler for gas fuels, fuel's emissions created during the burning process of natural gas and following evaluation of measured pollutants in 5 years of operation. First part of the thesis describes types of steam boilers and most important parts of it. Following a brief comparison of burners for gas and liquid fuels and pollutants created during the burning process of natural gas and their impact on the environment. The last part focuses on measurements of pollutants in real device and a review of produced pollutants created during the long-term operation.
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The influence of the combustion air temperature on parameters of the combustion process
Šimeček, Radek ; Hudák, Igor (referee) ; Skryja, Pavel (advisor)
Tato diplomová práce se zabývá předehřevem spalovacího vzduchu a jeho vlivem na parametry spalovacího procesu. V teoretické části je zpracován přehled nejčastějších znečišťujících látek z průmyslového spalování. Je popsána aktuálně platná relevantní legislativa v Evropské unii a jsou porovnány její implementace do národní legislativy v České republice a v Německu. Dále je provedena klasifikace hořáků z hlediska různých kritérií a rešerše předchozí práce v oblasti předehřevu spalovacího vzduchu. Na zkušebně hořáků byla provedena experimentální studie dvou různých hořáků na zemní plyn při konstantním tepelném příkonu 750 kW se spalovacím vzduchem předehřátým až na 250 °C. Výsledky odhalily pozitivní vliv předehřevu na účinnost spalování. Množství emisí NOx a CO naopak rostlo s teplotou spalovacího vzduchu.
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Automatic solid fuel boilers
Klíma, David ; Brázdil, Marian (referee) ; Štelcl, Otakar (advisor)
This bachelor thesis deals with automatic solid fuel boilers. In the first part describes individual solid fuels, which are suitable for combustion in automatic boilers. In the second part is described and divided automatic boilers and their parts. The third part focuses on the economics and ecology of boilers. The last part of the bachelor thesis describes the experiment measured at the testing room.
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Emissions of medium pressure steam boilers for gaseous fuel
Zavadil, Jan ; Milčák, Pavel (referee) ; Šnajdárek, Ladislav (advisor)
The aim of this the Bachelor Thesis is a description of a medium steam boiler for gas fuels, fuel's emissions created during the burning process of natural gas and following evaluation of measured pollutants in 5 years of operation. First part of the thesis describes types of steam boilers and most important parts of it. Following a brief comparison of burners for gas and liquid fuels and pollutants created during the burning process of natural gas and their impact on the environment. The last part focuses on measurements of pollutants in real device and a review of produced pollutants created during the long-term operation.
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Computational simulation of air flow in a gas burner
Waloszek, Jan ; Rudolf, Pavel (referee) ; Vondál, Jiří (advisor)
This work is focused on computational modelling of a flow in a burner. The main objective is to provide a complex comparison of the results obtained through several approaches to modeling, on different computational grids and also using different turbulence models. Experimental measurement data are used for validation. Numerically obtained data are compared to each other and to experimental data. The method of Proper-Orthogonal Decomposition is also applied on the calculated data. The greatest benefit of this work is providing a wider view on the swirling flow modeling in burners and the results obtained here will help to better understand the behavior of stated models for tasks of this kind and their potential for modelling combustion in furnaces.
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Electronic ballast for sodium lamp
Eliáš, Jaroslav ; Vorel, Pavel (referee) ; Huták, Petr (advisor)
The aim is to get acquainted with the way the management and regulation of sodium lamps. This knowledge is then applied to design your own gear. The introductory section describes the basic characteristics of discharge light sources. Their behavior was verified by measuring and findings were used to create diagrams, mainly the control circuit. Theoretical design is developed by individual functional parts of the inverter.
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Design of Energy Systems Using Hydrogen as Fuel
Slováček, Adam ; Kermes, Vít (referee) ; Houdková, Lucie (advisor)
The subject of diploma thesis is to gather knowledge in the production and use of hydrogen. This work is devoted to a comparison of the previously existing processes for producing hydrogen, where the vast majority is filled of fossil fuel. Another section is devoted to new materials for the study based on a number of selected patents and the experiment promising new method for decomposition of water. Based on available data will be carried out energy balance and consequently will be drafted energy system using hydrogen as fuel. In conclusion will be future possibilities evaluated in the field of hydrogen energy.
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