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The possibilities electricity savings of refrigeration and cooling equipment according to the distribution rate - the cold storage
Pálka, Marek ; Šlezingr, Jan (referee) ; Macháček, Jan (advisor)
This bachelor´s thesis is focused on the possibilities of electricity savings of the freezing equipment, which would work only in low distribution rate and it would be disconnected from the power source in the high distribution rate. In this work, a total research in the field of refrigeration and cooling equipment, both technological circuits, as well as the principles of temperature regulation and food storage process is made. Another part of the work is focused on freezer testing standards and regulations. Much of the work is devoted to the experimental measurements, in which different types of rates on the given freezer equipment and with them associated the possibilities savings relative to other rates are measured. Another objective of the experimental measurement is to find out the temperature behaviour in the various parts of a freezing apparatus according to the switching time of the rates. There are overall experimental measurements evaluated and the possibility of electricity savings in direct reliance to the processes ongoing in the food during long term storage in the freezer in the unstable storage temperature In the conclusion of the work.
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Rotor fault diagnosis of induction motors
Bednařík, Václav ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This bachelor thesis focus on the faults of induction motors. In general terms to mechanical and electirc faults and their influence on induction motor. Further on the tests, that are conducted on induction motors to detect faults and states that precede them. Main part is devoted to rotor eccentricity and broken rotor bars. Eccentricity is solved within theoretical analysis and measurements on free damaged motors. As well as broken rotor bars, which are supplemented by measurements on three damaged rotors. There are two types of eccentricity, static and dynamic. Faults of broken rotor bars is solved in terms of postion of broken rotor bars and their number.
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Design of brake test pedometr
Pavlík, Vojtěch ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This bachelor thesis is focused on equipment used for measurinng the handling force of braking system, a regulations of homologation tests (by ECE) and inspection checks (by MT) of braking systems. Furthermore, it includes a survey of commercial pedometers and their working principles, its andvanteges and disadvanteges. To end with, the author presents custom pedometer with a calibration device.
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Determination Parameters of Synchronous Machines according to Measurement
Hrtáň, Michal ; Vaněk, Jaromír (referee) ; Hájek, Vítězslav (advisor)
This "Determination Parameters of Synchronous Machines according to Measurement" bachelor thesis describes methods of tests necessary to determine loss and efficiency of electrical machines with focus on synchronnous ones. It determines calculation procedures for evaluating the measurements. Furthermore, it deals with measuring mechanical vibrations and noise of an electrical machines. Definitions of given tests are written up with regards to contemporary norms. From above mentioned information comes a serviceable tool for automatic measurement protocol generation, which is an electronic form. The measured values are the input of the form. The output of the form is the measurement protocol with results of calculation and graphs of characteristics. For the thesis purposes, the form was filled in with acquired values from tests of a specific synchronnous machine. The related calculations for determining the machine parameters are stated.
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Manufacturing technology of rail vehicle by new adhesive systems
Tesař, Petr ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
This master´s thesis deals with the bonding process, which is the dominant technology of the production of door leaves for railway vehicles. Following the necessary study of the basic essence of bonded joints the thesis further introduces the individual construction options of this product. The essential part of the thesis is represented by presentation of the achieved results of the testing of individual selected types of adhesives. On the basis of these results the most suitable type and supplier of industrial adhesive is selected.
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Entrepreneurial Project
Čechová, Jitka ; Novák, Zdeněk (referee) ; Rompotl, Jaroslav (advisor)
The aim of this diploma thesis is to develop a business plan in order to set up an educational centre with a range of courses, through which the market will be accommodated there where the school education system is not sufficient. The first part focuses on the theoretical knowledge and is followed by more detailed analysis of the current market situation. In a proposal part, there is a detailed entrepreneurial plan, according to which the plan feasibility can be considered.
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Testing stand of synchronous machines
Král, Michal ; Pospišilík, Jiří (referee) ; Klíma, Bohumil (advisor)
This diploma thesis deals with a part of synchronous generator testing stand project. Thesis is focused on drive part of testing stand, the appropriate drive is chosen according to type of the tests. The attention is mainly on drive control, specifically on the configuration of frequency converter and software programming of the converter control in NI LabVIEW. Software also contains drive simulation program. Testing stands are sequentially installed and commissioned.
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Škoda Roomster welding procedure
Podstavek, Michal ; Daněk, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
Bachelor thesis elaborated in full-time bachelor's degree in B-STI. Mechanical Engineering describes the welding process of Skoda Roomster. The thesis describes the production process of welding a chassis and joining methods used on Skoda Roomster. Single methods of connecting includes the types of tests used by VW standards used in Skoda Auto. On the chosen joint is designed the WPS weld.
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