Relevant bibliographies by topics / Tepelné sítě

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  1. Dissertations / Theses

Academic literature on the topic 'Tepelné sítě'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Dissertations / Theses on the topic "Tepelné sítě"

1

Čech, Jan. "Návrh tepelné sítě pro lineární motory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-412972.

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The first part of this thesis deals with the study of linear motors. The introduction of the thesis deals with the brief description of the linear motor, including its accessories. This part explains principle of linear motors, their general advantages and disadvantages. The next section contains an overview and division of the currently used linear motors. The second part deals with the theoretical description of forms of heat transfer. The third part of the thesis deals with the design of an equivalent thermal circuit model of a linear iron-core linear motor with permanent magnet. Hereafter, the proposed design will be used to calculate the temperatures of the individual motor units. The temperatures are later compared with the results obtained with finite element method.
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2

Rybka, Michal. "Výpočet tepelné sítě rozváděče typu UniGear a porovnání se zkouškou oteplením jmenovitým proudem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219020.

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The Master’s thesis deals with thermal network computation of UniGear type switchgear and it compares the calculated results with the real temperature rise test. The thesis describes both electrical and non-electrical characteristics of such a switchgear as well as its application in variol fields of industry. Description of switchgear auxiliary equipment is obvious part of the thesis. Modelling of current carrying track in software environment of Autodesk Inventor and preparing of this current carrying track for thermal network calculation in software environment of ANSYS follows. Main part of this thesis is presentation of thermal analysis results and their comparison with the real temperature rise test.
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3

Kolenčíková, Jana. "Model teplárenské sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417740.

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Subject of this thesis is district heating and heating network model design. Firstly, it de-scribes basic principles of heat supply and its elements. Secondly, computational model of heating network is created based on grid map of the network. The model contains proposed pipeline system and calculation of heat and pressure losses. Lastly, price map for heat con-sumption points, in dependence on heat losses, is presented.
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4

Čáp, Martin. "Tepelný výpočet asynchronního motoru pomocí tepelných sítí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377097.

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This thesis deals with thermal calculation of asynchronous motor. The theoretical part deals with principles of heat transfer, which are important for thermal calculation. Another theoretical part describes asynchronous motor analysis and its loss. In the practical part, these losses together with the electromagnetic circuit are calculated. Subsequently, two thermal networks are created to calculate the warming of individual machine parts. To ensure the correctness of the result, a bound model of partial calculations of the asynchronous machine is created. The next step is to compare the calculated electrical quantities and the calculated temperatures with respect to the measured values.
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5

Špérová, Alice. "Výpočet oteplení elektrických točivých strojů metodou tepelných sítí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233457.

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Práce se zabývá konstrukcí a využitím tepelných sítí k simulaci oteplení elektrických motorů velkých výkonú. Po úvodu do termiky a teorie proudění je popsána konstrukce tří různých typů sítí pro odlišné ventilační schémata motoru. Dále jsou popsány optimalizační metody a jejich možnosti k tepelné optimalizaci motorů. Je vybrána a vysvělena Marquard-Levenbergova metoda a na konkrétním případě je vysvětleno její použití a výhody pro optimalizaci chlazení elektrického motoru. V závěru se práce zabývá také citlivostí teplotních sití na jednotlivé vstupní parametry, porovnáním simulací s měřenými výsledky a také vlivem teplotních závislosti jenotlivých prvků sítě.
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6

Bystřický, Zdeněk. "Tepelná stabilita/degradace vysokoviskózních dentálních pryskyřic." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216816.

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This diploma thesis deals with the influence of long term thermal load on the stability of high-viscous resins used for dental composites matrix. The process of polymerization was also investigated in connection with type and ratio of monomer units, mass content of the initiator system and the presence of nanosilica filler. Prepared resins were characterized by differential compensation photocalorimetry (DPC) and dynamic mechanical analysis (DMA). The dependence of the heat flow on time was measured by DPC. Based on the experimental data, the dependence of conversion on time and the dependence of polymerization rate on conversion were determined. Viscoelastic properties of the cured resins were determined by DMA. Experimentally measured data implies that by the influence of elevated temperature both the degree of conversion and the polymerization rate decreased. With a higher content of the initiator system incorporated in resin the decrease was more significant. Therefore, we can conclude that when the resin was exposed to the elevated temperature one of the components of the initiator system was inactivated. For the photopolymerized resins presence of two glass transition temperatures is typical due to the inhomogenous morphology of the cured resin. There are two types of domains with varying relative composition. However, after the degradation only one glass transition temperature was detected. That was caused by reducing the resin viscosity due to the increased temperature. Higher mobility of the initiator system molecules and monomers itself resulted in more homogenous structure of the cured resin. In case of elevated temperature exposed resins more significant decrease of the elastic modulus was observed. The curing process is considerably influenced by the type and ratio of the monomer units and by the presence of filler.
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7

Pařízková, Iva. "Matematický model teplárenské sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241664.

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This thesis is focused on creating an iterative model for thermal and hydraulic calculation of heating net in Visual Basic of Application. Flowing medium considered is hot water. Although data for heating network in Brno are recorded in this model, its use for any other heating network is possible. This model allows also calculation of minimal temperature of the source and calculation of heat loss of every consumer. This is very useful when considering, if supplying some of the consumers with the heat from a local source would not be more effective. The second part of this text is aimed to evaluation of different ways how to reduce the heat loss in heat network for source Červený mlýn. Both current situation and possibilities for the future are considered.
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8

Pavlů, Jiří. "Analýza tepelných procesů metodou tepelných sítí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228358.

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The aim of this work is to create an algorithm for solving steady-state thermal processes, algorithms for dealing with the transition state of thermal processes and the algorithm for solving ventilation networks. At the same time, the resulting application were expected to meet the conditions arising from the use as teaching aid.
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9

Kolář, Pavel. "Program pro výpočet ventilace a oteplení synchronních strojů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217962.

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This master´s thesis deals with ventilation of synchronous generators with a cylindrical rotor. For the design of ventilation we apply basic physical laws in the field of hydromechanics and thermomechanics. Therefore the first chapters are devoted to these subjects. They are followed by the description of ventilation systems and a thermal net is created and solved for one of them consisting of the thermal resistance and sources. The final part deals with a program, which I developed in Visual Basic 2008 Express Edition. This program enables to calculate the ventilation and heating of individual parts of the machine after entering basic machine dimensions and losses.
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10

Kužela, Jan. "Novostavba hotelu Velichovky." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392170.

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This diploma’s dissertation is on project of a new hotel building with three aboveground and one underground floors. This study starts at the building stage and focuses on the construction details and energy demands of the building. Also included is a fire safety solution for the new hotel building. The layout and architectural desing is according to the investor´s requirements, with respect to applicable laws, regulations, standards. Traditional materials are designed for the new building, taking into account the latest developments in the construction industry.
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