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Fluidized bed boiler for burning coal and wood 150t/h
Popelka, Ondřej ; Lisý, Martin (referee) ; Skála, Zdeněk (advisor)
This thesis is focused in calculation and designing of fluid bed boiler for burning coal and wood biomass in the form of wood chips. The uniqueness of fluidized bed boiler is circulating fluidized layer and cyclone ash separator from flue gases beyond the combustion chamber.Work was divided into several parts due to different parameters of the fuel.. Stoichiometry calculations, emissions calculations, enthalpy of combustion and flue gas desulphurization calculations are performed in various parts.Further, calculating of the losses of boiler and its efficiency comparing to the calculation and design of each heat transfer surfaces was also solved so that resulting size and quantity meet the required specifications.Drawn set of this designed boiler based on calculations is included in the annex to this paper.
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Steam boiler with wood grate firing
Jakeš, Pavel ; Skála, Zdeněk (advisor)
This diploma thesis deals with proposal of the steam boiler on combustion uncontaminated wood. For the specified parameters have been implemented stoichiometric calculations and calculations enthalpy burnt gas. In the next part have been dealt with heat balance of the boiler, the efficiency of the boiler, design of the combustion chamber and calculation of particular rating surfaces. The output parametres are temperature, pressure and the amount of steam.
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Dalkia CZ - Cogeneration Power Plant Prerov
Kapavík, Michal ; Skála, Zdeněk (referee) ; Fiedler, Jan (advisor)
Thesis engages problems of supply boilers to fuel. Theme in thesis is divided on 3 parts. For identification with traffic apparatus, which is install in heating plant Přerov for transportation of fuel, is in first part indicated cardinal technical description of this apparatus. Below takes up general description of planned reconstruction of apparatus in heating plant Přerov. In last part was practised technical pursuit of designed resolutions of supply productive block of fuel.
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Steam boiler with natural cirkulation for wood cheaps burning
Vaculík, Jaroslav ; Kohout, Přemysl (referee) ; Kohout, Přemysl (referee) ; Skála, Zdeněk (advisor)
The purpose of this Diploma Thesis is the construction design of the steam boiler with natural circulation for the combustion of wood biomass according to the specified parameters. It is the boiler with the power of 12 tons per hour of superheated vapor output parameters of 3,3 Mpa at a temperature of 400 °C and a temperature of feed water 105 °C. For the specified parameters I first calculated the stoichiometric calculations, boiler efficiency, and followed by using geometrical parameters of the blocks and thermal calculations set design and the number of heat transfer surfaces, depending on the input parameters of the air and water and output parameters of vapor. The work also includes drawings of the boiler.
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Steam boiler burning fytomass 30t/h
Trávníček, Jiří ; Baláš, Marek (referee) ; Skála, Zdeněk (advisor)
An objective of this thesis is to design a grate steam boiler for burning straw. Generated steam will be used for technological purposes or cogeneration. Calculations of the heat comes from engaged temperature and pressure of the overheated steam and characteristics of characteristics of the biomass as well.
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Desulphurisation of flue gas fuidized bed boiler.
Miklík, Tomáš ; Slezák, Pavel (referee) ; Skála, Zdeněk (advisor)
The aim of this thesis is to design a desulphurization device for the fluid boiler. In the fluid boiler, fuel with extremely high sulphur content is burnt and the combustion products are not desulphurized to the required level, therefore it is necessary to build a desulphurization device. The thesis consists of two parts – theoretical and practical. In the theoretical part I stated the emission limits of sulphur dioxide, elaborated possible desulphurization methods and described the sorbets suitable for desulphurization. In the practical part I chose a dry desulphurization method with fluid reactor, to which a dry sorbent on the basis of lime hydrate is dosed. For the required parameters, I designed the whole desulphurization equipment including cloth filters, all necessary silos and major components. It is a design proposal with a layout and a spatial model.
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Tube heat exchanger for heating water.
Novotný, Roman ; Rostislav, Ratkovský (referee) ; Skála, Zdeněk (advisor)
Target of the master´ thesis is a design of heat exchanger air-water with the air flowing inside the pipes and with staggered pipe configuration, based on the engaged and chosen values. Next target is to determine heat exchanger with cross parallel flow and cross countercurrent flow of mediums, pressure drop on both sides air and water and dimensions of intake and outgoing gate on both sides air and water.
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Modern heating of dwelling houses.
Vedra, Jakub ; Moskalík, Jiří (referee) ; Skála, Zdeněk (advisor)
The bachelor`s thesis work explores the field of modern heating of dwelling houses by heat pumps, natural gas and renewable resources. Work contains principle, technical parameters, characteristics and coast data of condensing boiler, heat pumps, boiler for biomass and solar collectors.
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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.
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