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Assessment of investment in heating houses
Kučera, Cyril ; Poláčik, Ján (referee) ; Baláš, Marek (advisor)
The bachelor thesis deals with using the appropriate system for reducing the primary thermal energy for heating in a family house. The components of the work is the calculation of heat losses of the house according to ČSN 06 0210. The main focus of the thesis is to compare various energy saving systems and calculation of their profitability.
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General ways for transformation aircraft jet engine to aeroderivative
Pokorný, Šimon ; Poláčik, Ján (referee) ; Škorpík, Jiří (advisor)
Purpose of these Bachelor thesis is to apprize the reader with the generals principles of transformation aircraft turbojet to aeroderivative. Part of the work are elementary functional principles and structural design of combustion turbine used for aircraft applications. They are connected to stationary power units designed to produce elektricity. The last chapter introduce separate transformation processes to change aircraft turbojet to aeroderivative.
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Autonomous energy systems
Dolinský, Filip ; Poláčik, Ján (referee) ; Pospíšil, Jiří (advisor)
Master thesis deals with usage issues of autonomous, self-sufficient and decentralized systems. In the first part convectional and experimental sources for autonomous systems are disclosed. Second chapter deals with accumulation of electrical and thermal energy and possibilities of applications. 3rd part is focused on pilot project realized for autonomous and smart systems, which were built in last years. In the 4th chapter electrical and thermal energy consumption curves are made on daily and monthly basis for 4 type objects. In the fifth part issue of autonomy is explained, and for type buildings solutions are made with additional return on investment. The last chapter is focused on calculation of thermal accumulator and briefly discloses small district heating.
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Solar Energy Applications in Houses
Jankůj, Tomáš ; Špiláček, Michal (referee) ; Poláčik, Ján (advisor)
This thesis is focused on photovoltaics and photothermics. Their source is solar radiation that belongs to the category of renewable sources. At present, great emphasis is placed on ecology and economics. For this reason, renewable sources are coming to the foreground. In the first part of the bachelor thesis, types of photovoltaic cells, technology and their efficiency are presented. Furthermore, the principle and construction of photovoltaic and photothermal systems are described. The second part describes the design of the energy solution of a family house using solar energy.
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Hydrogen production
Kunický, Ondřej ; Šnajdárek, Ladislav (referee) ; Poláčik, Ján (advisor)
Bachelor thesis deals with the production of hydrogen by electrolysis. The introductory part describes the basic properties of hydrogen, the possibilities of its storage and transport, hydrogen safety, the hydrogen economics, and the impact on the environment. Greater attention is then paid to the current possibilities of using hydrogen and its production from fossil and renewable sources. The next part of this thesis deals with possibilities of increasing the efficiency of electrolysis and the control of its performance. At the end, there is a practical measurement of electrolyser and a calculation of the efficiency of hydrogen production by electrolysis.
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Impactor for laboratory capture of fine particles
Kodad, Daniel ; Poláčik, Ján (referee) ; Pospíšil, Jiří (advisor)
The focus of this master’s thesis is the issue of fine dust particles suspended in the air and their measurement. The thesis explains the basic characteristics of fine particles and the rules, which they follow. The section then examines the health risks of inhaled particles. Next is explained the influence of particles in the air on the environment, the historical development of the air pollution in the Czech Republic and the most important pollutants. After that is described the legislation, which frames the limits for pollutants suspended in the air. In the practical part is described the methods for calculation the geometry of cascade impactor, the design of three-stage impactor and finally the comparison with professional impactor. The designed impactor was then constructed and tested with wood burning stove as a source of particles.
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Solar energy storage
Řehák, Pavel ; Pospíšil, Jiří (referee) ; Poláčik, Ján (advisor)
This thesis aims to find solution that deals with excess energy produced by solar systems. Main point in this Bachelor's thesis is to solve off-grid solar power system that is completely self-sufficient. Introduction examines how solar panels works and the best weather conditions of operating. Analytics part of this thesis focuses on basic information about types of power accumulation with their advantages and disadvantages. Practical part proposes system used and also mathematical solution of solar system.
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Energy use of biomass
Streďanská, Alexandra ; Poláčik, Ján (referee) ; Baláš, Marek (advisor)
This bachelor thesis concerns on energy utilization of biomass. The main objective is to compare the combustion process of agropellets and wood pellets. This matter may be divided into two main parts. The first part focuses on research. It discusses the division of biomass and its properties. The second part is fully experimental. It focuses on experimenting with boiler efficiency calculations and describes these experiments. It also addresses the differences in combustion of given kinds of fuels and the subsequent evaluation of the measured results.
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Storage systems for renewable energy
Šebek, Denis ; Linda, Jakub (referee) ; Poláčik, Ján (advisor)
The accumulation of energy by hydrogen technologies is an important topic for the advancment of energetics in the future. This thesis is based around different methods of accumulation of energy including acumulation of energy by hydrogen technologies. Furthermore, the thesis describes methods of hydrogen storage, its advantages and disadvantages, and the overall principle. In the last part of the thesis, a hydrogen accumulation plant is designed, which uses electricity from renewable sources as its energy source.
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Power to gas
Copek, Tomáš ; Poláčik, Ján (referee) ; Pospíšil, Jiří (advisor)
This master’s thesis deals with Power to Gas technology. In this concept electrical energy is used for hydrogen production via electrolysis. Hydrogen can be injected in limited amount into natural gas grid, used for power generation via fuel cells or as a reactant for methanation process. Characteristics of hydrogen and ways of hydrogen production, storage and transport are described. Fuel cells are described as a device which uses hydrogen for power production. Crucial part of this thesis consists of a description of Power to Gas concept and a design of Power to Gas unit with electrical power of 9,5 kW. Three different units were designed for three different times of day operation. Efficiency and economical assessment was carried out for these three Power to Gas units.
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