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The Study of Implementation of Innovated Products in Production Process
Molík, Tomáš ; Šifalda, Martin (referee) ; Jurová, Marie (advisor)
This student thesis deals with a problem of manufacturing and competition ability of the joint stock company ZVVZ in the range of its manufacturing program - radial fans. The thesis compares the present and the innovated type of small radial fans from the view of manufacturing technology and manufacturing costs. The study comes out the technological documentation and demand forecast of future market. Finally the thesis summaries conditions which are necessary for the successful entrance of the innovated type of radial fans into the manufacturing process.
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Optimization of Cooling Synchronous Machine
Makki, Zbyněk ; Rafajdus,, Pavol (referee) ; Kačor,, Pavol (referee) ; Janda, Marcel (advisor)
The main goal of doctoral thesis is optimization cooling of the synchronous machine. Problem is solved based on the finite element method with use of ANSYS software. Work is built up from theoretical part where is comparison of base equations for heat transfer and simulations for several models. Next part shows us two methods how simulate free and force convection. Depends on the better method from the previous two methods is used for next calculations with several algorithm which are used for find of best parameters for synchronous machine. Our control parameter is mass flow rate.
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Thermal Calculations of Permanent Magnet Motors in High Current Technology
Deeb, Ramia ; Singule, Vladislav (referee) ; Duroň,, Jiří (referee) ; Aubrecht, Vladimír (advisor)
Práce se zabývá výpočty magnetických a tepelných vlastností servomotoru s permanentními magnety (motor M718 I vyráběný firmou VUES s.r.o. v Brně). Všechny uvedené výpočty jsou založené na numerických metodách konečných prvků a konečných objemů. 2D magnetická analýza motoru byla řešena s pomocí programu FEMM, zatímco pro 3D analýzu byl využit software ANSOFT. Magnetické analýzy umožnily stanovit rozložení magnetického pole v motoru a ve vzduchové mezeře. Ztráty způsobené vířivými proudy byly počítány v závislosti na rozměrech permanentních magnetů a velikosti toku magnetické indukce ve vzduchové mezeře. U 3D modelu v programu ANSOFT byly vypočítány i Joulovy ztráty. Pro daný servomotor byly navrženy dva způsoby chlazení. V prvním případě se jedná o vnitřní chladicí systém. K původnímu modelu motoru byly přidány některé modifikace (otvory v rámu motoru a radiální ventilátor na hřídeli uvnitř rámu motoru). U druhého způsobu chlazení bylo navrženo vnější chlazení. K původnímu rámu byly přidána chladicí žebra a radiální ventilátor na hřídeli vně rámu motoru. Výpočty proudění a tepelná analýza byly provedeny jak pro původní model motoru, tak i pro modifikovaný návrh (vnitřní a vnější chlazení) pomocí software ANSYS Workbench. Teplotní charakteristiky původního motoru byly měřeny různými senzory. Bylo provedeno porovnání experimentálně získaných výsledků s vypočteným teplotním modelem. Práce byla vytvořena v rámci doktorského studijního programu Elektrotechnika a komunikační technologie, obor Silnoproudá elektrotechnika a elektroenergetika. Podstatná část práce vznikla za podpory Centra výzkumu a využití obnovitelných zdrojů energie a výzkumných projektů CZ.1.05/2.1.00/01.0014 and FEKT S-11-9.
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Determination of Characteristics Fan
Vymětalík, Zbyněk ; Škorpík, Jiří (referee) ; Kracík, Petr (advisor)
The topic of this bachelor thesis are fans. The first part deals with subsumption of these machines. The second chapter is devoted to their dividing. As the measured fan is radial, the third chapter presents the theory of designing this particular type. The last pages focus on finding the characteristic curves and the main dimensions. At the end, there are the sizes drafted in the way to correspond with the recommended values.
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Design of fan for electric machines
Švec, Dalibor ; Appel, Martin (referee) ; Vlach, Radek (advisor)
Aim of this bachelor thesis is to program a design calculator for different types of ventilators. Calculator should be able to display design of ventilator, draw characteristics to a graph and show characteristic numbers of ventilator. Calculation is based on characteristic numbers and theory developed especially for ventilators.
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Measurement of the fans characteristic
Coufalík, Martin ; Štětina, Josef (referee) ; Katolický, Jaroslav (advisor)
This bachelor thesis discusses a fan characteristics and their measurement. The aim of this thesis is to compare the results of measurements, which were done in certified laboratory with results of measurements done in alternative measuring stands. In first part of the thesis are described the basic types of fans and inclusion fans in turbo–machines. Furthermore, the thesis deals with a particular fan, which is part of the combustion system of condensing boiler. This fan is also the object of measurement in practical measurements, which were measured as a part of this thesis. This practical part of the thesis includes also analysis of test track, the measurement procedure and all calculations according to ISO ČSN 5801. At first were carried out measurement in certified laboratory and then in three different measuring stands. In conclusion were these results compared with optimal results.
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Ventilator Noise of Cars and Trucks
Böhm, Šimon ; Kudláček, Petr (referee) ; Novotný, Pavel (advisor)
This bachelor thesis deals with various types of ventilators, which are an urgent part of cars and trucks. The noise generated by these ventilators must be regulated. The approach presented in the work focuses on the sources of this noise and on the design of the given types of ventilators. The work will identify new approaches to reducing ventilator noise in future cars and trucks.
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Calculation of the cooling medium in the asynchronous
Trnka, Zbyněk ; Skalka, Miroslav (referee) ; Janda, Marcel (advisor)
The aim of this master´s thesis was to model the fan for the induction motor, and then to solve this model using Ansys CFX in the terms of flow, when considering the different speeds of rotation of the rotor. The introduction of this work is dedicated to basic terms and definitions from spheres of fluid flow, cooling of the electrical machines, especially to the cooling of the asynchronous machine. There is also attention paid to losses in this machine. Finally, there is modeled radial fan and an air gap of specified induction machine. By using Ansys CFX the flow, which passes from the fan into the air gap, is analyzed.
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Proposal to drive the fan impeller for ripening chamber
Dvořáček, Ondřej ; Strecker, Zbyněk (referee) ; Dvořáček, Jiří (advisor)
The Bachelor’s thesis deals with a structural design of proposal to drive the fan impeller with vertical axis of rotation for ripening chamber. The introduction gives a brief description of types, parts and operating principles of air conditioned chambers in meat technology. The second part of this work is focused on the design of belt drive, impeller bearing housing and electric motor layout. Thesis contains fundamental engineering calculations for horizontal and vertical axis positions as well as technical drawings.
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Ventilator Noise of Cars and Trucks
Böhm, Šimon ; Kudláček, Petr (referee) ; Novotný, Pavel (advisor)
This bachelor thesis deals with various types of ventilators, which are an urgent part of cars and trucks. The noise generated by these ventilators must be regulated. The approach presented in the work focuses on the sources of this noise and on the design of the given types of ventilators. The work will identify new approaches to reducing ventilator noise in future cars and trucks.
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