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Steam boiler for fytomass
Rotrekl, Jan ; Ing.Pavel Křemínský (referee) ; Skála, Zdeněk (advisor)
This diploma thesis deals with a design of a boiler for stillage combustion. Stoichiometric calculations and enthalpies of combustion gases have been calculated from the specified parameters. In addition, heat calculation, design of the combustion chamber dimensions and dimensioning of heat surfaces were accomplished. The boiler has an evaporator with natural circulation and a fire grate.
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Steam boiler for biomass
Knichal, Jaroslav ; Obrovský, Jan (referee) ; Skála, Zdeněk (advisor)
At present, people already fully aware of how expensive it is energy dependence on fossil fuels. Trying to reduce this dependence goes hand in hand with environmental limits, which restrict the production of dangerous compounds. Biomass is a fuel that does not create large amounts of sulfur and carbon dioxide generated during combustion is in a closed cycle. Different types of biomass have different calorific value, and therefore different demands on the quantity needed to produce MWh. It is therefore necessary to choose the fuel with regard to the availability of in the site.
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Steam boiler for fytomass
Baláš, Jiří ; Ing. Obrovský (referee) ; Skála, Zdeněk (advisor)
The purpose of this Diploma Thesis was the construction design of the steam boiler for fytomass. For the specified parameters of biomass have been gradually implemented stoichiometric calculations of which are further based calculation of enthalpies of combustion gas. In the next part have been dealt with heat balance of the boiler, the efficiency of the boiler, recirculation of exhaust gases and the temperature of the combustion gases in outlet from fire. Thereinafter, the proposal of particular heat surfaces of steam boiler was solved, so that the resulting number and size correspond to the desired parameters. The parameters are temperature, pressure and the amount of steam.
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Trigeneration and its use in practice
Čupera, Pavel ; Mastný, Petr (referee) ; Baxant, Petr (advisor)
e master's thesis clarifies the concept of trigeneration and the principle of absorbing cooling. Compare the advantages and disadvantages of this method of manufacture cool with compressor cooling. It presents an overview of the implementation of a developing cold absorption and performance. Acquainted with the types of absorption chillers of the two leading suppliers, their characteristics and existing applications of these refrigeration units in operation in the Czech Republic and abroad. It also assesses the possibility of using these units in conjunction with a cogeneration unit powered by internal combustion engine. It follows from the economic assessment of costs and income of the absorption chillers and compressor chillers and on concrete examples and an assessment of the effectiveness of the various options.
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Gas heat pump
Krejsa, Petr ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This bachelor thesis deals with the description of heat pump technology (HP) and the gas heat pumps extension (GHP). The theoretical part contains an introduction, information of heat pump technology, presentation of gas heat pump technology powered by a natural gas combustion engine. The comparison of the known principal design is involved too. The calculation part deals with detailed balance of energy flows for the specific operating conditions of GHP unit. The last part compares the electrical and gas heat pump.
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Refrigeration systems in the food industry
Dvořák, Josef ; Katolický, Jaroslav (referee) ; Štětina, Josef (advisor)
Bachelor´s thesis is aimed at refrigeration systems in the industry which are used mainly in the food industry. Here are described individual parts that are refrigeration systems assembled. The work also contains summary of the ways you can make use of waste heat and also factors that have impact on economy of operation. The aim of work is to describe the basic analysis of thermodynamic cycles in the refrigeration systems which are displayed on the illustrative diagrams.
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Heat pump
Klíma, Martin ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
Bachelor thesis describes and characterizes the heat pump. Summarizes the various types of heat pumps in terms of energy production, principles of their function and description of the differences between different types of compressors, use of refrigerant and its future development. Finally, here is my own view given the heat pump, which I prefer.
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The used principles of industrial cooling
Machala, Jiří ; Sekanina, Bohumil (referee) ; Kavička, František (advisor)
This thesis summarizes the main cooling methods used in industrial cooling systems. It also discusses the fluids used in cooling, their influence on environment; ozone layer and climate change. The thesis closely describes the properties of ammonia and out of the many cooling methods on the market, it mostly concentrates on ammonia cooling systems. The thesis also discusses heat pumps, vortex tubes, and thermoelectric cooling.
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