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Modern approaches to designing electrical equipment with a focus on railway construction
Forejtník, Jan ; Pěcha, Jiří (referee) ; Bátora, Branislav (advisor)
The topic Modern Approaches to Designing Electrical Equipment with a Focus on Railway Construction responds to the decision of the Government of the Czech Republic to introduce the BIM method for government over-the-counter contracts from 1 January 2022. The government evaluated the BIM method as an effective tool for digitizing the construction industry. The diploma thesis deals with the method of designing high-current equipment, technologies and distribution on railways according to this new method. The work summarizes information about the present method of design, used high-current electrical equipment on the railway, the near and distant future of railway operation, the organization of administration and maintenance of equipment. It discusses the principle of the BIM method and basic software solutions supporting design activities according to this new method. The Promis.e software published by Bentley is also described in detail, which supports the design of electrical equipment for linear structures according to this method. The BIM method is a means of fulfilling the essence of Construction 4.0. It uses uniform data formats, a common data environment, working with non-graphic information. In the second part of the diploma thesis, the drawing documentation for the sample project of high-current distribution of the railway station was prepared. It was first created using AutoCAD software. After that, the sample project demonstrates the basic principles of the BIM method using Promis.e software. Furthermore, this project is evaluated, both methods of design are compared. The procedure of introducing the BIM method for the design of electrical equipment in a specific design company is proposed and other possible steps in working with the Promis.e software are discussed. The way of creating a and adding element libraries is described. At the end of the diploma thesis it is stated that to successfully master the design work according to the BIM method, it is necessary to have experience with design work in the field, know the principles of the BIM method, choose a suitable software solution, continuously and thoroughly manage these tools and train staff. Under these conditions, it will be possible to make full use of the potential of the BIM method.
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Simulation of Heat Pump Performance
Lahvička, Juraj ; Pěcha, Jiří (referee) ; Mastný, Petr (advisor)
This work is aimed to design and implement software for simulating operational properties of heat pumps and process data from measurements. Work contains the issue of heat pumps, their principle of functionality, different types of systems and coefficients used for rating of efficiency of heat pumps. Next it contains physical or electrical parameters that needs to be measured by designed system. The result is functional software, which contains mathematical library written in C++ and graphical user interface written in C#.
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Heat Pumps in Buildings Heating Systems
Vláčil, Martin ; Pěcha, Jiří (referee) ; Mastný, Petr (advisor)
The bachelor thesis deals with heat pumps and their use in building modern heating systems. In the first part of thesis is theory describing the principle operating of heat pumps, their types and basic components. The other part describe low-energy house and its parameters. In the last part of theory is discussed the issue of modern heating systems and types of heating elements used in it. In the practical part is the prescription of family house given by supervisor, the calculation of its heat losses and the design of the heating system. Further, the heat pump design and its economical comparison with selected heat sources.
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Design of electrical installation of polyfunctional house
Sladký, Tomáš ; Pěcha, Jiří (referee) ; Janík, Daniel (advisor)
The bachelor thesis deals with the design of power and data installations in a multifunctional building. This building is composed of two parts - office space located on the first floor and four residential units located on the second floor. The theoretical part of the bachelor thesis deals with the basic definitions and principles for the creation of project documentation, at the end of the theoretical part is presented the proposal of artificial lighting and the design of emergency lighting of escape routes. In the practical part of the bachelor's thesis there is a completely processed project of electrical installation. The project consists of all the requisites necessary for the realization of the building and contains drawings of the floor plans of the two floors of the building, where the power and data wiring are drawn, also contains the diagrams of the connection of all the cabinets and the electricity meter cabinet, the power distribution diagram, the budget and the technical report. The design of the cabinets was verified using the SICHR calculation program.
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Energy self-sufficiency of small sewage treatment plant
Leksa, František ; Pěcha, Jiří (referee) ; Ptáček, Michal (advisor)
The thesis presents basic information from the area of small wastewater treatment plants. It also deals with the theoretical description of the solar radiation issue and describes the modeling of the photovoltaic cell and the selected type of battery. On the basis of the theoretical knowledge obtained, a model of the system representing the cooperation of the wastewater treatment plant with other energy sources is proposed. The model is created in PSCAD system and its function is verified in several operating scenarios. Depending on this, the work evaluates the achievements of individual operating scenarios that demonstrate different energy requirements for the system as a whole.
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The use of technical analysis to determine the prices of energy commodities
Kopunec, Kristián ; Pěcha, Jiří (referee) ; Radil, Lukáš (advisor)
This work is focused on the problems of technical analysis and the technical indicators themselves. It deals with trends, graphs and formation issues. It clarifies them individually. It focuses on technical indicators. It deals in particular with price indicators that are key to selecting the appropriate key method. Using available information from OTE. The selected indicator is counted and then applied to a suitable commodity. The role of the work is to predict the market development using technical indicators and to evaluate the possibilities of the given indicator.
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Software tools for creating project documentation
Dirbák, Štefan ; Pěcha, Jiří (referee) ; Bátora, Branislav (advisor)
This Bachelor thesis deals with software tools for the creation of project documentation. The thesis starts with an introduction to project documentation, where its history, the timeline of creation and the benefits for end users are described. The next chapterpresents the division and characteristics of the projection tools. Subsequently, the characteristics of the most commonly used programs for the creation of project documentation are presented, which are divided into categories according to their use. The thesisalso provides an overview of selected programs used by designers. The following part focuses on the creation of a model project of a single-storey family house. The project includes technical report, layout, switchboard design and budget. The final part presents manuals for the design of project documentation, which include work with the programs ElProCAD, Sichr and Verox.
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Design and implementation of smart wiring in the apartment with visualization
Valo, Marek ; Pěcha, Jiří (referee) ; Bátora, Branislav (advisor)
This thesis deals with the classic and system wiring as well as their implementation and visualization environment for its operation. The aim of this work is to implement the project of the existing high-voltage and low-voltage wiring housing units accompanied by a design of the system wiring. This design is then fully implemented. In the beginning of the work is introduction to system wiring as such, added by a brief comparison of current systems. Followed by two chapters dealing with two selected systems for the realization of wiring. These chapters succinctly capture the essence of the system, its characteristics and features offered by each system. The last part deals with project design of wiring for the residential unit and the procedure for its commissioning. The practical part is dedicated to creating drawings with the existing power and low voltage distribution systems, the design of the smart wiring and electrical switchboard, together with possible modifications. The project documentation also discusses technical report. Finally, the selected system is tested and commissioned according to the requirements.
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Significantly influence subjective psychological Stress perceived Factor Analysis.
Pecha, Jiří ; Fiala, Miloš (advisor) ; Dvorský, Jaroslav (referee)
Title: Significantly influence subjective psychological Stress perceived Factor Analysis. Objectives: The main Aim of this Work is subjective perceived psychological Stress changing comparation of professional Soldiers Group before and after psychological Stress, They receive every Day in their Job. Methods: The Method used in this Work is Research by standard Questionnaire consists of two Parts. One of Them was realised before psychological Stress and the second One was realised after the psychological Stress. Both Parts of Questionnaires was analyzed and statisticaly evaluated. Results: By the Research was found, that from researching Age, Education and Length of Service in Unit Factors, the most significant Influence on Changes of subjective perceived psychological Stress have the Age and the Length of Service Factors. After that was found, the subjective perceived psychological Stress at the End of all-day Duty have increased. Keywords: Stress, psychological Stress, Frustration, Trauma, Post-traumatic Stress Disorder, peacekeeping Operation, Soldier.
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