National Repository of Grey Literature 34 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Optimization of Energy Flow During WWTP Operation - Smart Area Net
Pěcha, Jiří ; Máša, Vítězslav (referee) ; Braciník,, Peter (referee) ; Mastný, Petr (advisor)
The dissertation work deals with the issue of water treatment and possibilities of energy savings during the operation of sewage treatment plants. The aim of the work is to find the potential of alternative energy use, economical consumption, improvement of the facility system management and quality improvement of the wastewater treatment process. In the first part of the work, operating processes, energy flows and energy savings are discussed. To analyze the problematics, larger sewage treatment plants were chosen. Thanks to their size, it was easier to find critical points and test the usage of renewable sources in operation. After the energy audit, the individual processes were assessed and real operation pitfalls were determined. Further steps led to focusing on smaller facilities up to 2 000 PE. This step was carried out with the intention of preparing these plants for the planned legislative change and helping to create or modernize more energy-efficient solutions. Thanks to the establishment of consortium of Brno University of Technology, the Department of Electric Power Engineering and a company dealing with water treatment and automation control, a solution was created that modernize the electrical, automation and water treatment part of the plant operation. This innovative application was installed in the sewage treatment plant, where the issues were debugged, control algorithms were tested and the entire operation was launched in automatic mode. At the end of the wastewater treatment plant modernization, PV panels were installed on the roof, thus partially suppling the object with renewable energy.
Possibilities of Accumulation in Distribution Network
Žižlavský, Jakub ; Pěcha, Jiří (referee) ; Mastný, Petr (advisor)
The Bachelor thesis on the Possibilities of Accumulation in Distribution Network focuses on the distribution of electric energy storage types. Then the most suitable candidate for the application of the accumulation of electricity in the distribution network will be selected and further work will be conceived according to the choice.
Biogas stations connected to natural gas distribution systems
Ondra, Jaromír ; Pěcha, Jiří (referee) ; Radil, Lukáš (advisor)
This work deals with the problematics of acquisition, treatment, cleaning and use of biogas. This work mentions the procedures of solutions to problems that occur in this field. This work also deals with options of conecting biogas to central distribution of natural gas.
Heat Pump Supplied from Photovoltaic System
Kaděra, Jan ; Pěcha, Jiří (referee) ; Mastný, Petr (advisor)
This thesis provides heat pump usage in heating mode, heating of potable water or cooling mode. The heat pump is connected with photovoltaic power plant. The main aim of this study is to create photovoltaic system connected with heat pump and present the results of an energetic and economic evaluation. The theoretical part describes principle function heat pumps, photovoltaic power plants and components. The study provides as well a description of heating systems with a heat pump used for space heating or cooling. In the practical part of this thesis was performed calculation of energy consumption in a building. Based on this data, has been selected a suitable heat pump. To reduce the energy consumption was designed a hybrid photovoltaic power plant with a battery accumulation. Utilization of electric energy from photovoltaic system was calculated. Solutions provide the option of the energy flow analysis in specific interval. Results are summarized in the energetic and economic evaluation. The proposed solution can be applied for reconstruction or construction of a new building, focused on usage of renewable resources and emissions reduction.
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.
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#.
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.
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.
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.
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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