National Repository of Grey Literature 65 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
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.
Power-producing and Environmental Strategy of Czech Republic
Urbánek, Štěpán ; Brázdil, Marian (referee) ; Špiláček, Michal (advisor)
This bachelor thesis deals with energy and environmental strategy of Czech Republic. Part of this work is the description of international and intrastate documents which describes conditions and strategy objectives that not only our country must reach and fulfil them. Next is processed structure of the energy mix of Czech Republic and its predictable progress. In the next part of the work there is a characterization of possibilities how to produce electricity by renewable resources or nuclear energy and concept of using these sources in the future. The last part of the work contains prospect of reducing emission greenhouse gases.
Risk of Waste Combustion in Small Boilers
Kopecká, Eliška ; Špiláček, Michal (referee) ; Lisý, Martin (advisor)
The bachelor's thesis deals with the issue of waste combustion in small boilers. In the first chapter, the components of household waste are specified in more detail, as well as the pro-duction and possible waste management. The second chapter is focused on the formation of the pollutants during combustion and their impact on the environment and the human organ-ism. In the third chapter is presented the process of the operation of the waste incinerator and there are mentioned the limit values of the emissions that are released into the air. The fourth chapter deals with the reason for the origin and the comparison of the pollutants aris-ing from combustion in small boilers. Materials defined as household waste and pollutants released from them during incineration are described here. In the end, the results of the the-sis are evaluated.
Heat transfer design
Murín, Milan ; Brázdil, Marian (referee) ; Špiláček, Michal (advisor)
The bachelor thesis deals with a design of water – water heat exchanger with two types of baffle systems, disk and doughnut, and segmental. The thesis contains classification and description of tubular heat exchangers, geometry design, and calculation of pressure drops and heat transfer of the device for both eventualities. It also contains construction drawings of both types of baffles.
Rock heat accumulator
Nguyen Khac, Hoang ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
The aim of the thesis to explain the functionality of seasonal accumulation with an in-depth view on rock bed accumulator. The computational model is based on the project located in Attenkirchen, Germany. After the technical analysis of the model is carried out an economical review can be realized. To conclude the thesis an evaluation is made comparing an accumulation system with a more traditional one.
Heat exchanger parametric study using CFD
Sušovský, Martin ; Škorpík, Jiří (referee) ; Špiláček, Michal (advisor)
In this paper is carried out basic design and calculation of tube heat exchanger with a straight tube bundle with installed systém of disk and doughnut baffles. The calculation included pressure losses and heat transfer coefficient of tubular space and shell side. Then CFD model was made for parametric study, which was focused on influence of change of the baffles geometry on the heat output of the exchanger and the pressure loses on the shell side.
Multicyclone treatment behind biomass boiler
Vafek, Petr ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
The diploma thesis deals with multitube cyclone changes leading to improve separating efficiency of solid particles. The thesis begins with theoretical part, in which the attributes and types of solid particle separators focusing on cyclones are presented. The practical part begins with separating efficiency and pressure drop calculation of the specific multitube cyclone. Subsequently the separating problem is explained and the changes leading to eliminating this problem are presented and evaluated. In the last and main part of thesis the design project including piping design and fan choice is created.
Utilization of carbon dioxide in power engineering
Svoboda, Kryštof ; Sitek, Tomáš (referee) ; Špiláček, Michal (advisor)
This bachelor thesis deals with the use of carbon dioxide as a source of energy in the form of carbonaceous fuels. The first part describes the possibilities of carbon dioxide capture and its subsequent storage. The second part is dedicated to the conversion of carbon dioxide to carbonaceous fuels. In the third and final part of the thesis, these fuels are then evaluated for their utilization and compared with commonly used fuels.
Modern technologies for self-sufficient houses
Popara, Nikola ; Chýlek, Radomír (referee) ; Špiláček, Michal (advisor)
The bachelor thesis deals with modern technologies for self-sufficient houses. In the theoretical part of the thesis individual energy sources are explained. Sources of energy are divided in two major groups and that is source of heat and source of electrical energy. In the next part of my thesis cost of energy sources from different companies is calculated.
"Power-to-Gas" Energy Storage Technology
Gálíček, Radomír ; Špiláček, Michal (referee) ; Poláčik, Ján (advisor)
Climate change is becoming a severe global issue which demands innovative technical solutions. If, in the context of reduction of gaseous carbon emissions, the share of renewable energy resources continued to rise, the need for energy storage would emerge. That could mean a shift towards hydrogen focused technologies. This bachelor’s thesis focuses on Power to gas processes and summarizes means of hydrogen production, storage and transportation. All the mentioned aspects are reviewed from technological and economical point of view. Conventional methods of hydrogen production from fossil fuels are the most common, but usage of electrolysis or biological methods may prove as competitive options in near future. Furthermore, the usage of fuel cells in the field of small-scale cogeneration units is recently going through a phase of dynamic development. The practical part of this thesis focuses on designing a seasonal Power to gas unit for a semi-detached house which is powered exclusively by renewable resources. From numerous variants the best one was chosen and compared to a conventional energy storage using lithium batteries. It is shown that even thou the electrochemical cells are more flexible variant they couldn’t match Power to gas technology in the term of seasonal energy storage.

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