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Forster, Wendy. "Dark Virgin of Tepeyac." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446112.
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ESQUIVEL, RINCÓN JORGE OMAR. "REAPERTURA DE PLANTA TEPEYAC." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2018. http://hdl.handle.net/20.500.11799/94773.
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Resumen de Memorias de Trabajo
Se tomó el proyecto de la reapertura de planta Gamesa Tepeyac del cual fui parte como líder del área de Ingeniería Industrial y Almacén, este consistió en la reapertura en 2 fases de las Unidades de Negocio de Gamesa Tepeyac, siendo la primera fase la reapertura de la línea de IQO’s y la segunda la apertura de las 4 líneas de Galleta, Equipo 1, Equipo 2, Equipo 3 y Merengue. Considerándose como reapertura todo el proceso de preparación y planeación, la reapertura en sí y el seguimiento a la operación e Indicadores Clave de Desempeño. Esto se llevó a cabo con un apoyo por parte de todas las áreas soporte, Gerencia, Seguridad, Calidad, Inocuidad, Producción, Mejora Continua, Mantenimiento, Recursos Humanos, Contraloría, Lean Six Sigma, Abastecimientos, Capacitación e Ingeniería Industrial y Almacén, creando una serie de pasos críticos a seguir para garantizar que no hubiera problemas antes, durante y después de la reapertura, así mismo el apoyo y disposición de todo el personal. Esta reapertura se requirió por 2 temas, el primero fue la alta demanda de sobres de avena instantánea y que los maquiladores de este producto no alcanzaron a cumplir con los objetivos de producción necesarios para cumplir con la demanda, el segundo tema, y más crítico, fue que debido al sismo del 19 de septiembre de 2017 la planta de Gamesa Vallejo, la cual es la principal productora de galleta en México para grupo PepsiCo, sufrió graves daños estructurales en su edificio, situación que obligó a la compañía a cerrar la planta hasta que se repararán estos daños y se pudiera afianzar la seguridad de todo el personal que ahí labora. Debido a este cierre de Vallejo Gamesa se decidió reabrir la planta de Gamesa Tepeyac, junto con otras medidas que incluían aumentar el volumen de las demás plantas de galleta de grupo PepsiCo, y así poder disminuir la falta de producto en puntos de venta, sin embargo para Gamesa Tepeyac también se planteó el objetivo de hacer una reapertura limpia y operar con los estándares de desempeño que se manejaron antes del cierre. Desafortunadamente muchas plantas no pudieron alcanzar los nuevos objetivos de volumen que se les plantearon, sin embargo planta Gamesa Tepeyac no solo tuvo una reapertura limpia y sin incidentes mayores, si no que también alcanzó y superó los estándares de operación que manejaba anteriormente volviéndose una planta mucho más eficiente en la administración de la misma debido a la reducción de personal así como el aumento de volumen en galleta como en IQO’s; pasando de un máximo de producción de 2,649 toneladas mensuales a 2,925 toneladas mensuales y de 6.5 toneladas por turno a 7 toneladas por turno en galleta e IQO’s respectivamente.
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Kuráňová, Helena. "Výměníky tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392077.
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The master thesis deals with the issue of heat recovery and efficiency of exchangers. The experimental part is dedicated to the measurment of efficiency of a plastic model of heat exchanger with atypical construction compared to a standard plate heat exchanger. For production of the heat exchangers 3D printer was used so the thesis uses the possibilities that 3D printing is offering nowadays.
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Ptáček, Martin. "Modely přestupu tepla a přívodu tepla pro zážehové motory." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417423.
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The subject of this diploma thesis is the creation of a spark ignition thermodynamics model using pressure data measured on the actual engine. The model made in Matlab programming language combines Wiebe function for fuel energy release and Woschni correlation for heat transfer between in-cylinder gasses and cylinder walls. The created model contains compression and expansion stroke only, that's why are conditions at the start of compression and total heat addition calculated by measured pressure data from Skoda 1.0 MPI engine. Creation of transparent model by Matlab scripts enables other users to understand the basics of „zero-dimensional“ thermodynamics models properly, which are used by number of commercial solvers such as GT-Power simulation software. First part of this thesis deals with fundamental laws of heat addition and heat transfer, description of equations for its modelling and application. The major section is devoted to Matlab model, where defined input parameters are mentioned, description of model operation and model parameters influence study. Next parts develops issues of combustion pressure measurement and creation of engine simulation by GT-Power software used for comparison with Matlab model. In the thesis conclusion are simulations and actual engine data differences discussed.
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Nguyen, Khac Hoang. "Sezónní akumulátor tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417854.
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The aim of the thesis to explain the functionality of seasonal accumulation with an in-depth view on rock bed accumulator. The computational model is based on the project located in Attenkirchen, Germany. After the technical analysis of the model is carried out an economical review can be realized. To conclude the thesis an evaluation is made comparing an accumulation system with a more traditional one.
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Vích, Pavel. "Účinnost rozvodů tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227296.
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This diploma thesis focuses on the analysis of heat loss of heating distribution in the industrial area. The aim of this labor is to determine heat loss heat distribution kept in non manholed canal and evaluate economic return to build a local source of heat for the office building. For this building is in two variants resolve the reconstruction of the existing heating system. For the first variant is designed the local gas condensing boiler and for second variant existing central heat source. The experimental part of this labor compares the measured and calculated values of boundary conditions of hot-water pipes kept in non manholed canal.
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Nosek, Miroslav. "Analýza výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230295.
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The diploma thesis is focusing on research of possible damage mechanism of U-tubes in a heat exchanger placed within a gas waste incinerator unit in a factory dealing with chemicals manufacturing. In the first phase of the research, in which a thermo – hydraulic calculation is being made, a specialized software tool HTRI Xchanger Suite® v6.00 is used. Using the software it is possible to simulate certain operational conditions in which the heat exchanger operates. The output from the first phase of the solution is to obtain a set of temperatures of the tube material throughout the length of the tubes. These data are consequently used in the second phase of the analysis. The second phase of the analysis is dealing with thermal lenght dilatation differences assessment between tubes in the tube bundle as a predected reason of oversize tension formed in tube material and damage following afterwards. Conclusions of the calculation made in the second phase of the analysis are then checked by calculation via ANSYS Workbench 11.
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Buzík, Jiří. "Návrh výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230748.
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The master thesis deals with thermal hydraulic design and strength design of a heat exchanger with “U” tube bundle inside of a shell. The first chapter introduces general design issues of the heat exchangers. The following chapter describes thermal hydraulic design created in software Maple 16.0 by using Kern’s method and the method of Bell-Delaware. HTRI software was used for the control of thermal hydraulic design correctness. To check critical locations of fluid flow in space between the tubes, the CFD model was created at ANSYS Fluent 14.0 software. Accuracy of strength design was verifying by Sant’ Ambrogio software in accordance with ČSN EN 13 445 standards. The last chapter concerns with FEM analysis. According to standards ČSN EN 13 445 the design by analysis namely method based on stress categories were used for the strength analysis of nozzle.
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Klučka, Ivan. "Návrh výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231302.
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This thesis is focused on the thermal-hydraulic and construction design of heat exchanger with floating head. The introductory part is dedicated to the design of heat exchangers. Next part is focused on the thermal-hydraulic design created in HTRI software (module Xist. The next section is the strength calculation of selected components of the heat exchanger according to EN 13445 in software Sant'Ambrogio. The following part describes each of the analysis in software Ansys Workbench. The final part contains complete manufacturing documentation of heat exchanger.
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Vlasák, Vojtěch. "Využití odpadního tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240291.
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This dissertation is divided into three parts. The first part deals with the use of waste heat in the theoretical plane, where methods and possibilities of using this heat are described. Part Two, which is computational, deals with the suggestion of heating industrial halls with an adjacent, mostly office, building in two variants, then it goes on to also deal with the concept of equal pressure forced ventilation, a proposal of air curtains and preparation of hot water, where the heat source is a boiler. In the last part an experiment took place which investigated the conversion efficiency of thermal to electric energy.
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Dužík, Vojtěch. "Využívání odpadního tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-371881.
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The aim of this diploma thesis is to theoretically, practically and experimentally explore different ways of waste heat utilization in the building industry. The work is divided into three basic passages. In the first part I analyze the theoretical nature of the various physical processes in recovery and is there a practical use. More emphasis is placed on heat recovery from wastewater, as I am using this way of recuperation in other parts of this diploma thesis. In the second point, I apply the use of heat from waste water when designing a technical solu-tion for the reconstruction of the heating system of the clinic. The design is solved in two variants. The first suggested location lokali- them, recuperative, shower exchanger operation rehabilitation, bath and massage. In the second variant, central recovery is envisaged using a heat exchanger in the accumulator well and water-water heat pump. Based on the technical and economic evaluation, the first option was selected. The second variant is ineffective and remains only in the case study. In the last section, I experimentally investigate the thermal efficiency and the relative savings of the heat exchanger, which is designed in the first variant of the second part. Measurement, processing of results and evaluation I made for laboratory conditions and for real conditions with the showering person. Finally, I appreciate the eco-nomic benefits of this facility.
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Vyhlídalová, Karolína. "Zásobník tepla solární soustavy." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-433632.
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The solar hot water storage tank is off great importance in the solar collector array. It allows transformed energy accumulation thus deals with the inconsistency between supply and demand. The suitable design of the storage tank can improve system efficiency. The storage capacity represents the balance between the amount of stored hot water and the tank's heat losses. The design of the storage capacity is based on three hypotheses. The coverage of hot water demand by solar energy, the ratio between storage capacity and solar thermal collector area and the prediction that the storage capacity corresponds to one- to twofold hot water demand. The purpose of this thesis is to share an understanding of the solar storage tanks design and to improve the design through numerical simulation, experimentations and general calculations. It also focuses on the confirmation of the used hypotheses and determination of the best way to design the solar storage tank for general practice and further potential discussions. The simulation model has three variables – the storage capacity, collector area and the number of occupants. The intent is to find the interdependence of these three variables. The purpose of the simulations is to modify the design of the solar tank based on the mutual influence of studied parameters. The modifications are performed based on the users' needs.
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Chrást, Ondřej. "Pevnostní výpočet výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230747.
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The main content of the diploma thesis is the strength calculation of the heat exchanger according to ASME Code. The introduction is a summary of issues within the design of this equipments. In the practical part there are a strength calculation of the main parts of heat exchanger and the FEM analys with their evaluation. In the last part there is the calculation of cumulative damage.
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Bartošek, Nikola. "Analýza potíží výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232124.
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The master thesis is focused on analysis of specific cross-flow in-line tube bundle heat exchanger which deals with significant operational problems. Thermal, hydraulic and vibration calculation analysis of selected parts of the heat exchanger is performed based on CFD flow distribution results. Calculation is performed by using Maple software. Thermal and hydraulic calculations are compared with results obtained by commercial software HTRI.
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Horník, Jan. "Návrh komory výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241229.
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The master thesis is focused on the field of heat exchangers. Theoretical part makes the reader familiar with heat exchangers. Practical part is focused on design of chamber, which is part of heat exchanger. Practical part consists of strength calculation by standard ČSN EN 13445. Dimensions of tube sheet are gained in program Visual vessel design. Those parameters are used for creating of 3D model with accurate dimensions which is analyzed in ANSYS Workbench. Output of this analysis is evaluation by stress classification. Practical part is supplemented by drawing of heat exchanger.
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Schütz, Stanislav. "Výpočet regeneračního výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318710.
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Regenerative heat exchangers are established as a means of heat recovery in many industrial applications. The fixed-bed regenerators are mostly used to transfer heat from hot flue gas to cold air. In this work, several mathematical models of regenerators and several calculation methods were compared, while the preferred method is Willmott’s open method from 1964. Analysis of the influence of geometrical and operational parameters was carried out for the linear regenerator model.
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Kocandová, Karolína. "Provozní účinnosti zdrojů tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-371990.
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The topic of the diploma thesis is the operational efficiency of heat sources . The thesis is divided into three parts. In the first part a theoretical solution of the heat sources efficiency can be found. In the second part there is a calculation solution of the project. The project solves the heating of a football stadium. Two variants of the heating source and warm water preparation are suggested and the variants are consequently compared and evaluated. The last part is experimental - the topic of the experiment is the efficiency of heat sources.
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Doležal, Lukáš. "Provozní účinnosti zdrojů tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392150.
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The topic of this diploma thesis is the operational efficiency of heat sources. The work had several goals. The first was to determine the efficiency of the wood boiler according to available calculation methods and to compare the methods among them. The second was to determine the difference in the performance of the flue gas analyzer and the real calculation. Further, to determine the efficiency of a boiler firing different wood species - spruce and hornbeam based on their properties and elemental composition. Experimental measurement of various operating states of effectiveness took place in an older two-generation family house, which was also the subject of the project part. Due to lack of project documentation, it was necessary to focus and plot the object. Afterwards, the building was thermally inspected and the design of the heating system and the reconstruction of the whole heating system was carried out. The project was developed in two variants for two different heat sources - a heat pump and a solid fuel boiler for heating and water preparation. The thesis deals with the technical report, the conceptual solution of the related professions, the evaluation of the heat source variants and the project documentation.
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Marada, Petr. "Návrh vysokotlakého výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400842.
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The aim of the thesis is to design a heat exchanger for heating natural gas in the mining process and subsequent treatment. The first part describes natural gas itself, its origin, mining and ways of treatment. There are described technologies used for finding the deposits itself or processes by which water, sulfur and solid particles are removed from the extracted gas. The next section deals with the types of heat exchangers most commonly used in industry. There are also described basic relations for heat-hydraulic calculation of heat exchanger. In the practical part the heat exchanger itself was designed. World-wide HTRI software was used for the heat-hydraulic calculation and for strength calculation according to the standard ČSN EN 13445 was used sofware Sant´ Ambrogio.
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Horvát, Petr. "Výměna tepla v trubkových výměnících." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401835.
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Shell and tube heat exchangers and their use in cooling processes are the major topic of this thesis. The theoretical part of the thesis starts with the mechanisms of heat transfer and then deals with shell and tube heat exchangers. Their position, design specifications and equations for calculations are given. In the experimental part, the heat transfer on semi-operating shell and tube heat exchangers with baffles and glass or silicon carbide heat exchange surface is examined by cooling the humid air by 50% propylene glycol in tubes. For four or five coolant flows and three airflows, input and output flow temperatures including relative air humidity were measured. Differences in exchanged heat between the exchangers were negligible due to the low local air heat transfer coefficient, although silicon carbide has two orders of magnitude better thermal conductivity than glass. Much higher efficiency was performed by the carbide heat exchanger because the difference between air outlet temperature and liquid inlet temperature was one and half times higher for the glass heat exchanger. That was reflected in a decrease in mean temperature difference, which resulted in a 16 % higher experimental heat transfer coefficient compared with the glass surface. The theoretical model using the j factor, the correction factors for the baffles, and the correction for air humidity condensation have proven to be appropriate. For the glass surface, for the highest air flow rates the model gives an appropriate heat-transfer coefficient; at lower flow rates it gives slightly higher values. For the silicon carbide surface, it gives a lower heat-transfer coefficient because the model failed to consider a lower mean temperature difference. The results also evaluate the heat loss through the shell and the heat exchanged in addition by air humidity condensation.
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Marx, Sven. "Návrh modulového trubkového výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416662.
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Hlavním cílem této práce je seznámit se s požadavky specifické procesní aplikace a návrhem výměníku tepla s křížovým tokem pracovních látek a zhodnotit návrh předmětného výměníku pomocí simulačního softwaru. Nejprve jsou v práci prozkoumány provozní podmínky rekuperace odpadního tepla a obecné možnosti návrhu a jsou uvedeny základní rovnice pro tepelný a hydraulický výpočet. Hlavní část práce se zaměřuje na modulární trubkový výměník tepla s křížovým tokem pracovních látek navržený pro experimentální výzkum rekuperace tepla a zanášení ze znečištěných spalin produkovaných spalováním alternativních paliv na VUT v Brně (VUT) na Ústavu procesního inženýrství (UPI). Nejprve je stručně představena situace v testovací laboratoři. Poté je popsán postup návrhu předmětného tepelného výměníku pomocí softwaru HTRI a výsledky jsou shrnuty a porovnány s cílovými požadavky. Následně je analyzována distribuce toku vody v trubkovém prostoru uvnitř jednoho ze čtyř identických modulů výměníku tepla užitím softwaru CDF pomocí tří různých simulačních přístupů. Jsou popsány dva přístupy využívající model turbulence k--SST a jeden přístup využívající model turbulence k--Realizable turbulence. Nakonec jsou diskutovány rozdíly mezi přístupy a výsledky simulací distribuce toku.
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Bouma, Adam. "Výměník tepla pro záchranný habitat." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230831.
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This thesis deals with the specific issues of designing a suitable type of heat exchanger for ventilation in a rescue habitat. The paper presents an overview of the most common types of heat exchangers and characterizes basic heat transfer mechanisms (radiation, convection). Based on the above and other knowledge, a thermal-hydraulic calculation model suitable for a regenerative heat exchanger type is compiled and the necessary calculations are performed. The thesis also contains an evaluation of the results for three materials which can be used in the production of a heat exchanger (aluminum, copper, steel).
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Vosynková, Jana. "Konstrukční návrh vertikálního výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231304.
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Diploma thesis describes the design of a vertical heat exchanger in accordance with European standard ČSN EN 13 445-3 Unfired pressure vessels - Part 3: Design (in Czech). The first part contains the distribution of heat exchangers including an overview of the most commonly used media. The main part is aimed on the strength assessment of the heat exchanger based on the mentioned standard. The assessment equations are converted into an interactive document in Mathcad program. This allows quick evaluation of the new input parameters or easy implementation of the new parts of assessment. Checking the analytical evaluation is performed by numerical simulation in Ansys Workbench software with post-processing results according to given standard (stress categorization). The output is also the heat exchanger design documentation.
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Hrabová, Kristýna. "Zpětné získávání tepla v TZB." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265236.
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This thesis deals with the optimization of sewer heat recovery. For proper design and optimization it is necessary to use three basic methods: diagnostics, heat balance calculations and modeling. In 2D software Area Calculation are simulated different types of sewer exchangers arranged in sewer pipes. Using models of software CalA and simulations will be selected optimal variant. Using software BSim, which is based on more zone numerical simulation of the energy needs of buildings in relation to indoor climate, are detected heat needs of an office building. The optimal number of sewer exchanger is designed from the identified performance heat exchangers and supplies heat for the building.
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Žižka, Josef. "Kombinovaná výroba elektřiny a tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265521.
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Spratková, Nikola. "Zdroje tepla pro průmyslové objekty." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265524.
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The thesis is focused on the design of the new heat source of the existing building. The first part deals with the heat sources and fuels used in the Czech Republic. The second part includes design of three variants of heat sources: gas boilers, cogeneration unit with the electric boilers and cogeneration unit with gas boilers. The individual variations are also evaluated in terms of user comfort, space requirements or economy of operation. The third part includes measurement and evaluation of internal environment of the dining hall.
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Pernica, Marek. "Pevnostní návrh dvojice výměníků tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318743.
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This master’s thesis deals with structural design of twin heat exchanger with vertically stacked horizontal vessels according to CSN EN 13 445 standard. Brief introduction and basic characteristics of shell and tube heat exchangers is performed in the beginning part of the thesis. Design of the heat exchanger was initially performed using design by formula (DBF), which was verified by specialized software Sant´Ambrogio. Since this approach does not include methods for assessment of the nonstandard connection between the vessels, simulations of significant load states were performed using FEM analyses followed by result evaluation using stress categories.
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Hovorka, Martin. "Odvod tepla axiálně chlazených forem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319286.
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The presented thesis deals with a numerical simulation of axially cooled glassmaking parison. Several types of cooling channels have been investigated according to its usage in glassmaking process. Software Star CCM+ was used to describe properties throughout the channels and also the parison itself. The main focus of this thesis lies in comparing of temperature fields, cooling effects and cooling intensity among the chosen channel designs. The boundary condi-tions were kept the same accordingly to glassmaking conditions for every design. Some out-puts were transferred to non-dimensional diagrams in order to recalculation pursuant to other boundary conditions. Properties of diffuser channel designs were compared to an experiment. Transient temperature field of the parison were calculated with Ansys APDL in order to de-termine the accumulation and stationary zone of the parison and to verify the boundary conditions for cooling channels.
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Klučáková, Markéta. "Zpětné získávání tepla ve vzduchotechnice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372032.
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The diploma thesis solves a project of air-conditioning with heat recovery in the gym and adjacent dressing rooms. Furthermore, experimental measurement of temperature and relative humidity is carried out in one year in an air-conditioning device with a heat recovery heat exchanger.
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Hromádka, Martin. "Využití odpadního tepla provozu Špitálka." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376941.
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This master’s thesis deals with utilization of waste heat from heating plant Spitalka. The aim of the thesis is to explain the general principle of the operation of the heating plants, respectively the heating circuit, then to describe the operation of heating plant Spitalka and to try to identify possible sources of waste heat. Other goals are to make the calculation of waste heat and to make the proposal for its utilization. The final aim of the thesis was to design technological device for utilization of waste heat and to carry out economic evaluation. The master’s thesis describes the principle of functioning of the heating circuit. It explains the issue of combined heat and power production, the principle of functioning of the main technological elements, but also the ecology of operation or distribution of heat through the district heating. Then there is a description of the heating plant Spitalka. The thesis also deals with the water treatment and the description of the technological circuit from the beginning to the distribution to the customer. Next, the waste heat source is identified as water in a closed cooling circuit. The amount of this heat energy is calculated and suggestions for its possible utilization are made. As an application, there are selected two systems, heating and domestic hot water heating. The heating is made by heat pump. Based on the calculations, a heating system using two heat pumps in a bivalent way of connection was designed. In conclusion, the results of the design of the heating system are summarized and an economic evaluation is carried out.
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Frank, Vojtěch. "Využití odpadního tepla z rektifikace." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377754.
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The purpose of the thesis is to draw up a model of the energy and material balance using technical and technological analysis of the current state of production of waste heat in the process of distillation. Using these results, subsequently evaluate the energy potential of individual streams and propose optimal energy savings using waste heat. Emphasis is placed on the modelling of the process and the various proposed savings options. The result is also an evaluation of the potential of the proposed savings based on the results of the calculation.
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Macík, Ondřej. "Řešení strojoven u zdrojů tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392040.
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The content of diploma thesis is a solution for heating and warm water preparation with application of an experimental measuring. My experimental measuring is experimental block. The block unifies parts of heating in boiler room in one system. The main object of this diploma was to learn to control the block and to measure important working status. In the second part was applied in first variant normal connection of boiler and in second variant was applied the block. The teoretical part is description of normal connection of boiler and development from other block systems to experimental block.
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Jonák, Martin. "Návrh výměníků tepla pro vysokoteplotní aplikace." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229334.
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This thesis is devoted to thermal-hydraulic design and rating of heat exchangers with the specialized commercial software HTRI. These heat exchangers are solved for real high-temperature applications, where the hot fluid is a flue gas with high temperature (above 500 °C). In the thesis is made a brief analysis of the conventional design of heat exchangers usable for high-temperature aplications, description of the basic relations, description and brief user manual of software HTRI. Further, work includes a comparative study of methods for calculation of pressure drop of the fluid at 180° elbows, as support analysis for solution of required applications characterized by low pressure drop of process fluids.
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Kožík, Martin. "Analýza investice do obnovitelných zdrojů tepla." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399638.
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This thesis is focused on renewable energy sources, which are currently and increasingly used. Primarily for passive and low-energy houses. The principles that apply to heat pumps and solar collectors with thermal storage, which are suitable for new or older buildings, are described in detail. The thesis analyzes the thermal properties of the object under consideration and the proposed heat pump with its calculation and determination of the payback period of the investment in dependence on the analysis of energy price development in the las 10 years.
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Krist, Thomas. "Optimalizace zásobníku tepla typu "packed bed"." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417062.
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Tato diplomová práce se zabývá tématem výměny tepla v zásobníku tepla typu ”packed bed”. Cílem je popsat přenos tepla v zásobníku tepla obsahující kamínky malých průměrů, skrz který proudí horký vzduch. Toto je modelováno v prostředí MATLAB. Na začátku je krátký úvod do problematiky zahrnující ukládání tepla a jeho možné využití. Dále je uveden krátký přehled o základech přenosu tepla, typech přenosu tepla a termofyzikální vlastnosti systému vzduch-kámen. Ve třetí kapitole je představen zásobník tepla typu ”packed bed” a rozličné modely a dané podmínky jsou vysvětleny. Další kapitola se zabývá s numerickými metodami, převážně s metodou konečných diferencí použitou v této práci. Pátá kapitola se zaměřuje na obecnou optimalizaci daného problému přenosu tepla. Populačně založený metaheuristický optimalizační algoritmus zvaný Genetický algoritmus je popsán. Sestavení modelu je ukázáno v šesté kapitole, stejně jako prezentace výsledků získaných z programu MATLAB. V poslední kapitole je pak diskutován závěr a doporučení.
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Černoch, Jakub. "Vývoj struktury pro efektivní přenos tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417466.
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Diplomová práce se zabývá teoretickými výpočty a návrhem struktury pro přenos tepla, která je součástí Miniaturizovaného tepelného spínače podle zadaných požadavků Evropské Kosmické Agentury. Základními parametry jsou nízká hmotnost a vysoká tepelná vodivost. Práce navazuje na spínač navržený firmou Arescosmo, který nesplňoval požadované limity zejména v oblasti hmotnosti a tepelné vodivosti. Pomocí teoretických výpočtů hmotnosti a tepelné vodivosti bylo ověřeno 49 variant ve třech základních konceptech – Mechanická struktura, flexibilní struktura složená z drátků a foliová struktura. Z hlediska tepelné vodivosti jako nejlepší struktury vycházejí ty, které jsou založené na použití ochranných kovových opletů. Z dostupných zdrojů byly rovněž navrženy technologie, které by bylo možné využít pro výrobu těchto struktur. Pro splnění požadavků, bude v další fázi projektu nutné vyrobit experimentální vzorky na kterých budou teoretické výpočty a vybrané technologie ověřeny.
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Sušovský, Martin. "Parametrická studie výměníku tepla pomocí CFD." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417779.
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In this paper is carried out basic design and calculation of tube heat exchanger with a straight tube bundle with installed systém of disk and doughnut baffles. The calculation included pressure losses and heat transfer coefficient of tubular space and shell side. Then CFD model was made for parametric study, which was focused on influence of change of the baffles geometry on the heat output of the exchanger and the pressure loses on the shell side.
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Švec, Dalibor. "Výpočtový program pro návrh výměníku tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443201.
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The diploma thesis is focused on creating a calculation software for designing heat exchanger. The software will not calculate one single heat exchanger but will recommend all heat exchangers which meet the requirements. Then, user can decide which heat exchanger is best suited for the specific application and make a comprehensive calculation. Part of the diploma thesis is to verify correctness of the software and make a parametric studies. Parametric studies will be focused on baffle cut, baffle spacing, tube pitch, and tube thickness and its effect on heat transfer and pressure drop.
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Talač, Michal. "Kombinovaná výroba tepla a elektrické energie." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226843.
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This thesis describes the design of a cogeneration unit, its design and operational optimization. The theoretical part explains the principles of cogeneration and the associated advantages and disadvantages, also describes the different types of units and their main components and their suitability for use in various types of buildings. The second part of this thesis deals with a design of cogeneration unit in selected building. Design of cogeneration unit consists of evaluation of the object itself, through the selection of suitable units, optimalization of a selected range of cogeneration units, to the final financial analysis. The part of the thesis are also project drawings, which shows the current status of the heating system and subsequently scheme with the possible involvement of cogeneration units in the existing system.
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Vojkůvková, Petra. "Vybrané jevy při přenosu tepla vzduchotechnikou." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226850.
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Numerical simulation is a scientific method used to describe characteristics of examined system by means of experiments on its mathematical model. This thesis uses this method to elucidate the processes taking place in two different systems. Firstly it deals with the design of air conditioning systems for buildings, focusing on the mixing chambers. It focuses on the formation of condensation of water vapor in mixing chambers under conditions where the final temperature of the mixture does not drop below the saturation curve. Second prepared topic falls within the field of thermodynamics applied in food production. In order to assess the sufficiency of air-cooling method examines the thermal field in the product and evaluates the application of air-cooling assembly line in practice.
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Mášová, Pavla. "Možnosti regulace vneseného tepla - experimentální ověření." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229977.
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This diploma thesis elaborated within the Manufacturing Technology Master´s study program considers various possibilities of welding which can regulate the amount of inputted heat into the welded joint. For experimental testing, material X2CrTi12 (ferritic stainless steel) was chosen, welded by means of methods suitable for the material. Welding methods included TIG, plasma, and laser. Further possibilities of heat input are suggested, such as pulse welding, Rapid, Fast Root, Surface Tension Transfer, Cold Metal Transfer, ColdArc, and Wise. The aim of the experiment is to compare the amount of heat input and its effect on particle growth and hardness.
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Švihel, Miroslav. "Mezivýměník tepla primárního okruhu reaktoru ESFR." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230371.
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The thesis is mainly focused on the design of the intermediate heat exchanger primary circuit of the reactor ESFR. Heat exchanger is calculated heat, hydraulic and strength and is finally processed part drawings. There are designed the basic dimensions of the tube bundle and container heat exchanger. There are included an overview of concepts and so far used types IHX at the nuclear power plants with fast reactors. There are also mentioned basic parameters of the project ESFR and evaluated the safety and operational reliability of the heat exchanger.
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Vítek, Stanislav. "ORC oběh pro využití tepla KJ." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230884.
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The aim of this diploma work is the study and the modeling of an Organic Rankine Cycle (ORC). Organic Rankine Cycle is used for heat recovery from low-potential heat sources. Their working fluid is a refrigerant or a hydrocarbon whose properties are adapted to the conditions in which the heat recovery is performed. The other chapters include the technical resolution of exhaust-heat exchanger of cogeneration unit for application ORC and partially economic study use in Czech Republic.
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Križan, Andrej. "Využití odpadního tepla z prádelenského provozu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231175.
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Main purpose of this thesis is to explain the issue of waste heat from broader point of view. It´s substantial part therefore deals with various available methods of waste heat utilization and their analysis. Large part of the thesis is devoted to description and usage of heat exchangers, heat pumps and thermal energy storage. The main theme of the thesis is the use of waste heat from industrial laundry room. It also introduces the process of the professional maintenance service along with its specifications and parameters of waste streams from washing machines. Main goal of the practical part of the thesis is to design equipment which could be used to store waste heat from washing machines. This equipment is designed to be used for specific process in NETME Centre laboratory. In conclusion, thesis addresses the propposed equipment from the energetical and economical point of view.
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Trajer, Štěpán. "Zdroje tepla pro vytápění občanské budovy." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240240.
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Smola, Vojtěch. "Optimalizace zdrojů tepla pro bytový dům." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240315.
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This diploma thesis solves design of heating in a residental building. This work is focused on the selection of appropriate one of the two options a heat source, which are cascade heat pumps ground-water and gas condensing boilers. The theoretical part of the diploma thesis deals with introducing to the issue of heat pump systems. The functional principle of the widely most used types and particularized type ground-water. In the practical part calculation and design of heating system with selected heating source that is cascade of gas condensing boilers.
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Snášelová, Tereza. "Kvalita otopné vody pro zdroje tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265465.
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The diploma thesis focuses on assesment of water quality in heating systems. The experiment includes description of used methods and meters as well as analysis of collected samples. The theoretical part describes selected water properties, quality meters and sources of heat according to the material of their heat exchanger. This thesis processes design of heating system and hot water preparation for complex of administration buildings. The project includes calculations of heat losses, system proposal and two versions of possible heat source. The first version offers solution with condensing boiler with heat exchanger from stainless steel, while the second version uses condensing boiler with heat exchanger from aluminium and silicon. Both versions have their own solution of safety equipment and water treatment.
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Bednařík, Jakub. "Využití odpadního tepla z technologických procesů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376930.
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Master thesis deals with the utilization of waste heat from Nova Mosilana company. Theoretical part of this work is focused on the waste heat description (heat, heat quantity, heat temperature/quality, composition of waste stream) in which a considerable energy potential is hidden. The other parts describe waste heat technology, especially heat pumps, Organic Rankine Cycle (ORC) and system absorption cooling. Some of the technologies described in the theoretical part are used in the design of the more efficient existing waste heat utilization, especifically power and cold production.
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Mráz, Kryštof. "Výpočtové modelování přenosu tepla v porézních strukturách." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-432645.
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Vrstva okují, skládající se z oxidů železa, která se tvoří na povrchu oceli při jejím tepelném zpracování, má velký vliv na tepelné metalurgické procesy. Tepelná vodivost okují je jeden z klíčových parametrů pro numerické modelování procesů odkujování a chlazení oceli. Tato vodivost je nicméně silně ovlivňována porézní strukturou okují a žádná všeobecně uznávaná materiálová data nejsou v současnosti dostupná. Cílem této práce bylo provést stacionární tepelnou analýzu za účelem stanovení tepelné vodivosti vrstvy okují. Byl vytvořen podrobný 3D MKP model vrstvy okují založený na datech získaných pomocí CT skenování. Je popsáno získání CT obrazu a jeho zpracování. Využity byly dva různé způsoby segmentace. Pravidelná krychlová výpočetní síť byla vytvořena přímo z voxelové matice zpracovaného CT obrazu. Výsledné hodnoty tepelné vodivosti získané z provedené MKP analýzy byly téměř identické pro obě metody segmentace, což prokazuje jejich vhodnost. Výsledná tepelná vodivost okují může být dále využita jako materiálová charakteristika v numerických modelech tepelného zpracování oceli
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Czudek, Aleš. "Simulace přestupu tepla v nízkonapěťovém rozváděči MNS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221077.
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The thesis includes diagnostics temperature field of industrial low voltage. Place of origin, flow and heat transfer are important aspects in the design of the switchgear, especially in terms of proper equipment layout. The correctness of the design of the switchgear is verified by measuring the practical temperature field during testing or in work mode. To determine the temperature profile, it is necessary to measure the temperature at various points of the switchgear, either contact or contactless method. Measurements are performed on standardized low voltage switchboards, which are located power elements. The goal is to replace costly and time-consuming field testing switchgear efficient simulation of the temperature field mathematical model developed switchboards.