|
|
Generators for renewable energy
Prokop, Jan ; Macháček, Jan (referee) ; Baxant, Petr (advisor)
The bachelor thesis deals with the topic of generators, which will use alternative sources of energy instead of fossil fuels. The work is focusing on mechanical energy conversion. Introductory part of the text summarizes the requirements on the generator, properties and parameters of appliances, which will be connected to the generator, and finally the selection of suitable alternative fuels. Main part describes the process of a prototype realization. Individual parts of the device have been manufactured from a simplified technical documentation and sketches in the machine shops of the Secondary School of Electrotechnical Engineering on Trnkova street, and from these parts a functional generator prototype has been assembled. This prototype consists of two separate parts: a propulsion unit and an alternator with accessories, including appliances. On this prototype an efficiency measurement has also been carried out. Furthermore, the work includes animations of device functions created in modeling program SolidWorks 2012. Prototypes are based on a known principle of a steam engine and, at the request of the above-mentioned school, have been adapter into a visual teaching aid. The advantage of those prototypes lies in their inexpensive and simple construction, which utilizes commonly available materials. The device works on maintenance-free principle, there is only the necessity of occasional greasing for a fluent running. In conclusion are briefly reviewed the investment and operating costs of the generator.
|
|
|
The Conversion Efficiency of Different Kinds of Energy into Electrical Energy and the Possibility of its Accumulation
Ostruška, Jan ; Bartošík, Tomáš (referee) ; Macháček, Jan (advisor)
The thesis deals with the issues of the conversion efficiency of different kinds of energy into electric energy. Firstly, the thesis presents a brief introduction into types of energy sources and their capacity. Then, conversion efficiency of particular direct and indirect conversion is scrutinized, pointing to factors which affect conversion efficiency. The next chapter deals with the possibilities of accumulating electric energy. These are analysed as far as conversion efficiency is concerned as well and the end of the chapter concludes with comparison of these particular possibilities. Booth parts of the process – power generation and its accumulation – are connected in comprehensive scheme of energy conversions. The thesis develops on this scheme by mathematic description of its components and by designing a simulation programme, which would show the flow of energy in the scheme.
|
|
|
Utilization of biomass for energetics
Bažant, Zdeněk ; Radil, Lukáš (referee) ; Macháček, Jan (advisor)
This bachelor’s thesis deals with processing and utilization of biomass energy in the power industry. There are described single types of processing of biomass. It is possible to find a comparison between countries in EU and other countries from all over the world as far as utilization of biomass is concerned. Another part of this thesis is the comparison of the main economics evaluations which are generally used for efficiency evaluation of planned projects involved in the power industry. Due to the rising prices of biomass and other kinds of fuel, there is a progress of prices of gas, biomass and coal for the last five years. The practical part is the evaluation of gas boiler exchanged for biomass boiler. The calculation is based on real data taken from invoice from heating season. At the conclusion there’s the general viewpoint on biomass and its development.
|
|
|
System wiring and the power balance
Horenský, Martin ; Bátora, Branislav (referee) ; Macháček, Jan (advisor)
Bachelor thesis deals with the theoretical part of the general problem of system wiring. The introductory part includes a general introduction. Gradually are described differences from classical wiring, to compare the advantages, disadvantages and cost. Shortly is described historical development from the first attempts to currently solution used by manufacturers. Subsequently used systems are divided into several groups and described. In the next chapter is performed research most famous electrical system from different manufacturers. In thesis there are described systems iNELS and Ego-n in detail. For each system are described basic functions, linking structure, used bus, the method of programming, a summary of advantages and disadvantages. In addition is made a brief description of system components. The practical part is focused on establishing own consumption of system wiring components in the model family home. Calculations and measurements are performed for three systems - iNELS, Ego-n and KNX. First, there are designed requirements that should meet the installation. Based on the requirements is created list of components of the systems installed - for each installation according to appropriate system.. From technical catalogs are designed theoretical input powers of each installation. The following is a test procedure for measuring educational panels. Results of measurements are processed and compared with catalog data for each component. In addition input powers are calculated from individual installation measured values. Results obtained from the measured and theoretical data are compared. From the each calculated power consumption is determined annual payment for consumption the system wiring. For each measurement system are recorded and reported data transfers through the bus. A complete evaluation of the results is shown in conclusion.
|
|
|
Usage of Busbar as a Source of Heat
Svoboda, Ondřej ; Macháček, Jan (referee) ; Radil, Lukáš (advisor)
This study is dedicated to the use of heat energy from the busbar and its cooling system. The study deals with thermal analysis of the busbar, both using numerical simulations in SolidWorks and practical examination – warming of the busbar. We can verify the correctness of the simulation from the measured values. To determine the temperature profile of the busbar, it is necessary to measure the temperature at various points of the busbar by contact method using thermocouple or contactless method using a thermal imager. Measurements are performed at the busbar LIA1600 made by Siemens Busbar Trunking System Mohelnice. The aim of the study is to analyze temperature busbar, to suggest the most efficient method of heat recovery, and to make economic calculation
|
|
|
Automated hardware testing equipment
Macháček, Jan ; Hošek, Jiří (referee) ; Krajsa, Ondřej (advisor)
This thesis is focused on the design of system for automated testing of hardware on Beagle Bone Black platform. The purpose of this thesis is to develop a complex device which will be able to test the functionality of general electronic devices before completion. Use the external measuring devices and design hardware to control them.
|
|
|
Bus wiring systems for complex building management
Mokrý, Lukáš ; Macháček, Jan (referee) ; Bátora, Branislav (advisor)
The aim of my thesis is to examine current opportunities of bus wiring systems for complex building management, mainly its power and economic evaluation. It can be simply called intelligent electrical installation. I will examine two systems from INELS and ABB company. These systems contain functional components, mainly modules and controllers. By means of other materials, I’ll create a panel. Components will be placed there and electrically connected. After this, systems will be put into operation and programmed by means of their software. The next step is measuring of quatities during the various conditions of systems and consumption, which is one of the main aims of the thesis. Two apparatuses will be used for measuring. This thesis itself will contain theoretical analysis of systems, their description, using the way of operation and main advantages and disadvantages. Single components and complete process of measuring and working in laboratory will be described. An overall evaluation and comparison of the systems from various points of view, including the price, will be put together from results.
|
|
|
Possibility of using LabView for simulation and calculation of the energy balance of a hydrogen-oxygen fuel cell
Fryda, Daniel ; Macháček, Jan (referee) ; Šlezingr, Jan (advisor)
This bachelor thesis deals with the calculation of the characteristics of hydrogen-oxygen fuel cell and their simulation in LabVIEW. It is divided into several parts. At the beginning thesis clarifies the issues of fuel cell and contributes to a better understanding of its activities. It explains what a fuel cell actually is, what is the principle of its work, describes its components, access to its history and its development to the present. Further on the thesis divides fuel cells into the different types and deals with deeper hydrogen-oxygen fuel cell. The fourth chapter is devoted to its use in practice and in laboratory education . Another part is focused on the LabVIEW program where is described the principle, use and basic parts of the program. In the practical part is implemented the model of the laboratory task in LabVIEW program. In chapter no. 6 are developed the operating instructions of the program and described in detail the creation of the model. The aim of this bachelor thesis is creation of an overview of fuel cells, their properties and possibilities of using for practice and laboratory education and then simulation of the laboratory task in LabVIEW program which is based on measured data and the characteristics of the hydrogen-oxygen fuel cell. This laboratory task can be used as teaching material for students in the Department of Electrical Power Engineering.
|
|
|
Using WXT520 meter station for measuring the wind energy
Skalička, Jiří ; Macháček, Jan (referee) ; Šlezingr, Jan (advisor)
This bachelor’s thesis introduces the basics of wind energy. It explains the formation of wind, various types of wind engines, different types of wind power plants (divided by installed capacity), basic methods for wind array determination and wind potential in Czech Republic. Then it turns to Vaisala Weather Transmitter WXT520, which is ideal for measurements in wind energy industries. It explains the transmitter’s basic functions, connection and communication options. Practical part of this thesis is dedicated to realization of measurement using National Instruments CompactRIO platform and LabView development environment. Output of this thesis is a program for long term measurements of meteorological data, analysis and archiving of this data.
|
|
|
Solar energy systems for residential building
Svrček, Milan ; Macháček, Jan (referee) ; Radil, Lukáš (advisor)
This bachelor´s thesis is focus on solar-thermic systems for heating supply water in aplication for flat-building. Thesis have only theoretical status. First part occupy by introduction to solar energy, accessability and reasons for application solar-thermic systems. Next part explain technology of active solar systems. Another part treat of decision procedure. Last part put mind to allocation of funds for this project and conclusion of whole project.
|
guest ::
RSS feed.