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Working chamber of electron beam welder
Červinka, Petr ; Mrňa, Libor (referee) ; Daněk, Ladislav (advisor)
The submitted work deals with the design of the working chamber of the electron beam welders. This vacuum chamber of the cubic shape, with a volume of approx. 100 litres will be used in the ÚPT of the AV ČR v.v.i. during building an experimental welding with electron gun performance 2 kW with accelerating voltage 60 kV. The theoretical part is about the theory of electron welding, electron beam welders of basic sections of the facility, and about possibilities of the technology for welding working chambers. In the practical part of the thesis is being thought out the design of the working chamber (construction chamber in design software), the strength test of construction chamber in the software ANSYS and the design of appropriate methods of welding. The sample of the material which is the stainless steel 17240, from which the chamber will be made, have been used in methods of welding TIG and MAG that was verified by the suitability of the chosen methods of welding.
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Utilization of biomas in power plants in Czech Republic
Červinka, Petr ; Mastný, Petr (referee) ; Macháček, Jan (advisor)
The main idea of this project is get to know a distribution of biomass .We will serve out biomass acording to its types and using of it, we are going to compare biomass between the Czech republic and Europian Union. In this project we will inform you about a technology of burning with the fosill cooler.We will write about energic and economic classification too. Actual europian trend faces to more frequently using of a renewable recources energy, where the biomass is the most important part.
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LC Oscillators - Laboratory Exercise for BVMT Course
Červinka, Pavel ; Dřínovský, Jiří (referee) ; Urbanec, Tomáš (advisor)
This bachelor thesis speaks about LC oscillators. It describes basic principle and operation of oscillators. It introduces us with individual points of these oscillators, their charts and princip. This work deals two-points, three-points and feedback oscillators and oscillators with negative differential resistance. Then it was choosen, designed, further dismantled the Colpittts and one of the crystal oscillator. There are their wiring diagrams, printed circuit boards designed. Then these oscillators were made and are given their measured parameters.
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Business Plan
Červinka, Petr ; Hanušová, Helena (referee) ; Bayerová, Vladimíra (advisor)
The goal of this work is to design a business plan for building a company and its successful business. The company acts as a personal agency and it will deal with the activities, which are providing demand for employees abroad, who are missing in specific areas. The company will be located in Brno and also be represented in Norway. The theoretical part includes important basic concepts, which are close to the theme of this work. The practical part analyzes conditions and environment, which serve to build the intention and realization of the personal agency and its successful business.
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Comparison of different photovoltaic panels in CR
Červinka, Pavel ; Stojan, Radek (referee) ; Pléha, David (advisor)
This term paper deals about history, principle and use of photovoltaic panel. It describes their stucture and constantly improving properties of these panels. It outlines their gradual generational evolution from beginning to present. Then it describes the various systems involved on – grid and off – grid. It also describes and compares the photovoltaic panels and inverters from different global manufacturer. The end of this work deals about conditions of photovoltaic in the Czech republic and about Hady photovoltaic incubator, which belongs to the company Energ servis a.s. It presents a comparison of different local and the analysis of the impact of shading for the achievement of the photovoltaic panel. It makes mathematic models for calculation of the spacing range and calculation the power loss in a specific shade.
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Drop forging of pinion
Červinka, Petr ; Dvořák, Milan (referee) ; Štroner, Marek (advisor)
The project elaborated in a frame of Bachelor’s studies branch 2303 presents a technology design of a forged piece – pinion gear – made by drop forging from 14 220.0 material. Drop forging in two operations was suggested on the basis of specialized studies on the subject of drop forging and calculations. Assumed series of 120 000 pieces a year, will be produced on the drawing inclinable press LMZ 1000 A with nominal tensile force 10 MN. Swages are made of alloyed instrumental steel 19 552.8, heat-worked according to drawing documentation. At the end of the project is implemented technical economic evaluation of the technology design.
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Protection of Citizens before and during the Nuclear Accidents
Červinka, Petr ; Hradil, Jaroslav (referee) ; Mika, Otakar Jiří (advisor)
This work is concerned with protection of citizens before and during the nuclear accidents. There is described what threat is nuclear accident in first part of this work. Next are noted sources of risk and classification of accidents in nuclear plants. There is mentioned legislature of Czech Republic in this area and principles of protection of citizens. Part of this work is a short study of Chernobyl accident and a concept of pocket guide for citizens.
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Stroje pro mělké zpracování půdy (stroje pro podmítku)
Červinka, Petr
The B.A. thesis provides an outline of the recent knowledge in the field of the soil cultivation and the dividing of soil cultivating machines. In the field-laboratory measurments of the Horsch Joker 6 CT disc harrow, the quality of soil cultivation in different speeds before seeding of wheat is measured. From the results, the optimum work speed of Horsch Joker 6 CT disc harrow is suggested.
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