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Energy efficient mountain chalet
Němec, Ondřej ; Bečkovská, Tereza (referee) ; Bečkovský, David (advisor)
Master´s thesis is based on the design of energy efficient huts in the mountain resort Čenkovice . The specified property is currently located existing building mountain rescue . Land is the bigger size , medium steep , overgrown with trees higher . The existing building is of timber construction and is already inadequate to the needs of mountain rescue . The concept of the new HS object is to achieve the lowest power consumption of utility power to operate the building and to endeavor the least possible burden on the environment during construction. The new building is designed largely from natural materials , mostly of wood that form the supporting structure and it is well insulated. The house is rectangular in shape , with 2 floors and galleries. The first floor serves HS , second floor stay for ski school instructors . The rooms are oriented to the southwest side . The building uses solar energy to power and ventilation is forced.
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Selection and Application of Surge Arresters for Middle-Voltage Air-Insulated Switchgears
Němec, Ondřej ; Bernard, Michal (referee) ; Drápela, Jiří (advisor)
The purpose of this thesis is to introduce readers with design of a surge arresters in four different categories. In the first part of this thesis is described theory of overvoltage, surge arresters and testing. The second part of this thesis is focused on design of surge arresters to protect from overvoltage due switching capacitive loads. The thesis continued with design of surge arresters in medium voltage network. The next part is design of surge arresters to protect from overvoltage due switching inductive loads. The next point is protective distance of surge arresters in different lighting overvoltages. In the conclusion of this thesis is the appreciation of whole problems about surge arresters.
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System for measuring properties of electronic transformers
Němec, Ondřej ; Havránek, Zdeněk (referee) ; Klusáček, Stanislav (advisor)
The purpose of this thesis was to study the properties of electronic current and voltage transformers, choose the method for temperature cycle accuracy test and the development of the measuring software. Measuring software was realized in LabVIEW version 8.2. The first part describe the topic of this thesis. The second part describes various kinds of sensors and describtion of functions and specifications. The third part describe programming system LabVIEW. The fourth describe design of connection supply and measurement part of circuit. The fifth part describes used instruments. The sixth part is about used methods measuring. In the seven part is the description of the functions of this program and its control. In eight part is evaluated measurement uncertainty. In the last part are shown examples of the application program.
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Design of overvoltage arresters in high voltage switchgear depending up parameters of connected load
Němec, Ondřej ; Bernard, Michal (referee) ; Lázničková, Ilona (advisor)
The purpose of this thesis is to introduce the reader about the problems of design of surge arresters. The first part of this thesis describes problems of surge. In the next part of this thesis are described test pulses needed to test surge arresters. The next issues of this thesis are medium voltage switchgears and surge arresters ABB and their test. In the next part ot this thesis are described type of network according earthing of transformers. The other point of this thesis are aplications of surge arresters, figures and calculation for networks, generators, transformers and motors. In the conclusion of this thesis is the appreciation of whole problems about surge arresters.
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The Project of Computer Network for Elementary School
Němec, Ondřej ; Černý, Stanislav (referee) ; Ondrák, Viktor (advisor)
I chose computer science institute to work out the bachelor thesis. The specific topic of my thesis is "The project of computer network for elementary school. The kontent of this work is to analyze the current state of the computer network at elementary school in Třešť then describe the theoretical background for my thesis, and on these thesis handle a possible solution. This is mainly to find weaknesses in the computer network and a proposed new network these deficiencies. Of course it is essential that everything was handled according to relevant standards. It is important to find the correct boundary between the financial possibilities of elementary schools and their needs.
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Semi-detached house, Lanskroun
Němec, Ondřej ; Kalábová, Tereza (referee) ; Bečkovský, David (advisor)
The bachelor thesis is based on design of semi-atteched house on the street Slovenské in Lanškroun. Bulding plot is situated in new city quarter determined for family houses outside the city center. Shape of semi-atteched house is almost rectangle and it is made of two parts where each part is designed for family of four to five members. All living rooms are oriented to south that allows residents to enter the garden and the patio in first floor. Each part of house includes garage for one car.
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Reliability assessment of FPM
Němec, Ondřej ; Dvořák,, Ladislav (referee) ; Julínek, Tomáš (advisor)
The topic of this thesis was the evaluation of selected elements of flood control measures, abbreviated as PPO. The aim of this paper was to develop evaluation procedure of PPO and then to apply proposed procedure to a specific location. FMEA (Failure Mode and Effects Analysis) that allows the identification of failure modes, their causes and consequences.was chose as a method for qualitative assessment.
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Technical Analysis
Němec, Ondřej ; Dvořák, Zdeněk (referee) ; Novotná, Veronika (advisor)
The subject of my thesis is technical analysis - creation of an investment strategies. The theoretical part describes the theoretical background relating to technical analysis and indicators. The practical part map the current situation in the environment of investing in forex - comparing brokers, choice of platform, etc. The solution contains a description of the investment strategies that have been programmed in Meta Quotes Language 4 and tested and optimized using genetic algorithms in platform MetaTrader 4. In my thesis is also calculated the interdependence of investment strategies.
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Velikost kořenového systému pšenice seté ve vazbě na výnos biomasy
Němec, Ondřej
The bachelor thesis deals with the influence of the size of root system on the grain yield of wheat (Triticum aestivum L.). In the literature review, there is a description of the origin and anatomical structure of the root system, the description of the abiotic factors (lack of water, air temperature and mineral nutrition) and their influence on the properties of the root system and also the relationship between the root system size and grain yield of cereals. The second part of the thesis is focused on methods of studying the root system by electrical capacity. The practical part evaluated the size of the root system (RSS) of the selected varieties of wheat sown in the field experiment. The RSS was measured at three growth stages (columning, earing and filling grains) by the method of electric capacity. It was found that there are statistically conclusive differences in the RSS between the varieties of wheat with different baking quality, of which the category B had the largest root system in stem elongation and category C during the grain filling. The influence of the root system size on grain yield was not statistically conclusive, however, the positive correlation between the RSS at the stage of grain filling with grain yield (r=0.433) was detected.
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