National Repository of Grey Literature 35 records found  previous11 - 20nextend  jump to record: Search took 0.00 seconds. 
The use of solar collectors in the Czech Republic
Kočka, Jan ; Kic, Pavel (advisor) ; Vaculík, Petr (referee)
The aim of this thesis was to approach the market of solar systems in the Czech Republic and the subsequent design of the solar system in the selected object, in this case RD Divišov. In the chapter Overview of the findings from the literature there are outlined the general knowledge about the Sun and the use of solar radiation. In addition, this chapter provides a general overview of solar collectors followed by the approach of the necessary elements for the functioning of the solar systems. In the chapter Default conditions of the solved object there is characterized the selected one, and there is described the current system in this object. Chapter The design of the solar system in a given object includes the proposal of individual elements of the solar set for water heating. There are compared variants with different demands, different input parameters on the basis of values and graphs chosen the most efficient option for this project. At the end, the economic evaluation of the proposed system with the subsequent comparison with the current system and possible return. The work is ended by summarizing of the whole issue.
The description and evaluation of the automation of selected technologies used for milking cattle
Tesař, Tomáš ; Vaculík, Petr (advisor) ; Přikryl, Miroslav (referee)
This Bachelor thesis is focused on automatic and conventional systems of milking cattle and further to compare fully automatic and less automatic milking systems for the cattle. In first chapter are listed basic legal standards, characteristic of milk and description of the basic elements of the milking equipment. In second chapter is described milking equipment, which are used for milking cattle. In third chapter is described milking using technology of milking robot and milking with operator. In last chapter is listed its own evaluation of individual used technologies and technological equipment with respect to the automation of selected activities.
The description and evaluation of the current state of water treatment for drinking purposes
Šafránková, Jana ; Vaculík, Petr (advisor) ; Chládek, Ladislav (referee)
The aim of this work is a description and evaluation of the current state of water treatment for drinking purposes. In the chapter Characteristics of selected drinking water quality indicators are listed law and the basic definitions of the law. This chapter contains, as in the Czech water gains and what are the properties as drinking water . Since microbiological, biological, physical-chemical and organoleptic. The chapter Technology used in water treatment for drinking purposes describes the water resources, water abstraction, water distribution systems and technological processes for it´s modification. Another chapter Technological equipment used in water treatment for drinking purposes describes the devices, filters etc. Chapter Description and evaluation of selected technologies used in water treatment for drinking purposes, deals with water treatment Mokošín in the Pardubice region and their technological processes.
The comparison of traditional systems and automatic systems for the cattle feeding
Beneš, Ondřej ; Vaculík, Petr (advisor) ; Přikryl, Miroslav (referee)
The thesis describes the problems of traditional and automatic systems for the cattle feeding. The theoretical part briefly review the methods of cattle feeding and compared to traditional methods of feeding, less automated and highly automated technological lines for the cattle feeding. Intend of the work was to use the acquired knowledge and perform technical and economic assessment of various methods for the cattle feeding.
The evaluation the effect of the milking robots to basic indicators in the dairy farming
Šustr, Jaroslav ; Vaculík, Petr (advisor) ; Přikryl, Miroslav (referee)
This dissertation describes problems of traditional and mostly automatic systems used for milking of cattle used in farming in the Czech Republic. The theoretical part of this work provides the basic principles of cattle farming and a brief historical progression of technology for cattle milking. For more thorough comparison a general description of an existing technical solution for a conventional method of milking is introduced here. Further parts of the report give general concepts from industrial robotics. The aim of this dissertation was to use practical knowledge to describe existing technology of automatic milking machinery and the impact of their technological development for the improvement of the effectiveness of milking in real operations of cattle farming in the Czech Republic.
The success of practical use SEO project within a specific company
Slezáková, Michaela ; Votruba, Zdeněk (advisor) ; Vaculík, Petr (referee)
The aim of this bachelor thesis is to explain the significance of SEO and point it out as one of the essential tools for increasing the profitability of the business. The first few chapters describe the theoretical basis, which contributed to selecting the appropriate tools and techniques to optimize and determined the suitable key performance indicators, which also led to a price being calculated for the client. The core of the thesis is focused on the implementation of the chosen techniques on the specific website. It includes analysis of the website, keyword analysis, detailed description of the optimization process of the website, draft strategy of the optimization and the following advantages for the client and SEO agency as a result of the strategy. The final chapters clarify the achieved results, including calculation of the economic benefit for the client and the potential for further cooperation based on the achieved results.
Load Flow Calculation of Chosen Part of E.ON 110kV Grid with Analysis of Reactive Power Flow
Skoupý, Martin ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
Content of this bachelor thesis is theoretic introduction to the steady state of network and optimization of network operation from the viewpoint of reducing active power losses in the electric wiring. Furthermore, the work deals with analysis of the network traffic flow distribution of the active and reactive power and consequences of overflow of the reactive power from the medium voltage level to the high voltage level. The following part includes designing practical involvement of the area and carrying out calculations of its operation in terms of losses. Another chapter is proposition of measures to minimize the overflowing of reactive power in distribution system and its impact on reduction of operating losses in the network. In the conclusion the work summarizes results obtained and the final assessment of influence of reactive power for operation of the network.
Calculation of HV line distance relay setings
Pustowka, Pavel ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
This work is divided into practical and theoretical part. The first part deals with defective states on ehv lines, especially short-circuits and their calculation, further discusses about distance protections and the theory necessary for their correct adjustment. The second part contains practical calculation of short-circuit conditions and adjustment for distance protection on selected part of 110 kV network, belonging to EO.N company. The result of the work are values needed for adjustment all distance protection in entered part of the network.
Calculation of short circuit currents in electtrical network
Reiter, Martin ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
First chapters of my bachelor´s thesis are focused on failures of networks, simple characteristics and description of their potential danger. Next chapters are thoroughly focused on the short-circuit, on the short-circuits graphs, on the circumstances which caused them and on their calculation. Next part is about the example, which is counted by the IEC 60909. First example is simple network. Second example is real distribution network 110kV. We are going to cogitate two involves for the real network and we are going to calculate symmetrical and asymmetrical short circuit current. There is summary of knowledge about the short-circuits and evaluation of the real distribution network at the end of my thesis.
Load Flow Calculation and Design of Distance Protection Relay Settings of 110 kV Overhead Line
Jasenský, Filip ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
Bachelor thesis load flow calculation and design of distance protection relay settings of 110 kV overhead line acquaints with the theory calculation of steady operation, short-circuit conditions and a proposal setting the distance protection. The theoretical part is made an example of a simple calculation to show leadership methods of calculation. The practical part is a calculation of steady operation and short-circuit conditions. Short-circuit ratios are calculated for a single operation and parallel operation of transformers in Otrokovice. Calculated using the initial shock symmetrical output from the calculation of short-circuit conditions is verified by short circuit resistance of substations. The practical section setting the distance protection ABB REL 316*4 and compensation earth faults. Calculation of steady state and short-circuit conditions designed basic operational state of the network, for which the design of a distance protection relay settings.

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