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Dissertations / Theses on the topic 'Automotive heat exchanger'

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1

Agarwal, Neeraj R. "Modeling, Validation and Analysis of an Advanced Thermal Management System for Conventional Automotive Powertrains." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338383355.

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2

Aliev, Ruslan. "CFD Investigation of Heat Exchangers with Circular and Elliptic Cross-Sectional Channels." Cleveland State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=csu1452678890.

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3

Grelet, Vincent. "Rankine cycle based waste heat recovery system applied to heavy duty vehicles : topological optimization and model based control." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1006/document.

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L’évolution croissante du prix des carburants ainsi que les normes antipollution de plus en plus drastiques obligent les fabricants de véhicules commerciaux à développer des solutions innovantes pour réduire la consommation de carburant. Dans cet objectif, comme une grande partie de l’énergie contenue dans le carburant est directement relâchée à l’ambient sous forme de chaleur, celle-ci peut être valorisée et transformée via un cycle thermodynamique secondaire. Dans ce cadre, l’importante utilisation du cycle de Rankine à travers le monde en font un candidat naturel pour une implémentation dan
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4

Gerova, Klementina. "Thermo-fluid effects associated with modelling subscale automotive heat exchangers." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/9875.

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Automotive components are tested extensively in wind tunnels by automotive manufacturers and race teams. This is usually achieved using an accurate scale model representation of the component within the wind tunnel. Automotive heat exchangers, however, are comprised of numerous intricate geometries and are therefore impractical to produce at model scale. Instead they are simply modelled as pressure drops, achieved using a thin mesh or honeycomb of known porosity. Most commercial computational fluid dynamics solvers ignore the geometry of the heat exchanger and instead model it as a discontinui
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5

Abu-Madi, Mahmoud A. "A computer model for heat exchange processes in mobile air-conditioning systems." Thesis, University of Brighton, 1998. https://research.brighton.ac.uk/en/studentTheses/3b31883a-c908-4435-a66b-eef044b014da.

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The last few years have seen a rapid growth in the number of cars equipped with air-conditioning systems. The space available to fit the system is limited and the under bonnet environment is hostile. Moreover, the depletion of the stratospheric ozone has led to legislation on the phasing out of the chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs ). These substances are used as refrigerants in most refrigeration, heat pump and air-conditioning systems in service today. The aim of this research project was to study existing air-conditioning systems used in automotive applications
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6

Borsatti, Eugênio José. "Estudo do sistema duto-trocador de calor compacto para veículos de competição." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3150/tde-21102010-160939/.

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Esse estudo procura integrar as áreas de termodinâmica, transferência de calor e aerodinâmica no desenvolvimento de veículos de alto desempenho. É proposta uma ferramenta computacional que auxilie a análise de alternativas de trocadores de calor compactos, parte integrante do sistema de arrefecimento veicular. O aplicativo desenvolvido, denominado TROCALC, tem dois modos de uso: para colaborar no projeto de um trocador de calor ou para avaliar o desempenho de um trocador existente. Estruturado por um conjunto de equações e parâmetros com base na metodologia de Kays e London (1984), no primeiro
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7

Checketts, Gus Thomas. "Microchannel Radiator: an Investigation of Microchannel Technology with Applications in Automotive Radiator Heat Exchangers." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700005/.

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Microchannels have been used in electronics cooling and in air conditioning applications as condensers. Little study has been made in the application of microchannels in automotive heat exchangers, particularly the radiator. The presented research captures the need for the design improvement of radiator heat exchangers in heavy-duty vehicles in order to reduce aerodynamic drag and improve fuel economy. A method for analyzing an existing radiator is set forth including the needed parameters for effective comparisons of alternative designs. An investigation of microchannels was presented and it
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8

Shinde, Pradeep R. "Investigation of Low Reynolds Number Flow and Heat Transfer of Louvered Surfaces." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/3038.

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This study focuses on the investigation of flow behavior at low Reynolds numbers by the experimental and numerical performance testing of micro-channel heat exchangers. An experimental study of the heat transfers and pressure drop of compact heat exchangers with louvered fins and flat tubes was conducted within a low air-side Reynolds number range of 20 < ReLp < 225. Using an existing low-speed wind tunnel, 26 sample heat exchangers of corrugated louver fin type, were tested. New correlations for Colburn j and Fanning friction f factor have been developed in terms of non-dimensional parameters
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9

Parida, Pritish Ranjan. "Optimization and Fabrication of Heat Exchangers for High-Density Power Control Unit Applications." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77165.

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The demand for more power and performance from electronic equipment has constantly been growing resulting in an increased amount of heat dissipation from these devices. Thermal management of high-density power control units for hybrid electric vehicles is one such application. Over the last few years, the performance of this power control unit has been improved and size has been reduced to attain higher efficiency and performance causing the heat dissipation as well as heat density to increase significantly. However, the overall cooling system has remained unchanged and only the heat exchanger
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10

Métayer, Julien. "Réduction des émissions de polluants automobiles par une approche thermique globale." Thesis, Vandoeuvre-les-Nancy, INPL, 2011. http://www.theses.fr/2011INPL057N.

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Les travaux de cette thèse s’inscrivent dans le cadre de la mise en place d’une méthodologie innovante de gestion thermique globale des véhicules automobiles. Ils portent plus particulièrement sur l’analyse de la réduction des émissions de polluants et l’amélioration des performances énergétiques d’un moteur à combustion, notamment dans les charges partielles ou en régime transitoire. Le premier objectif vise la mise en évidence de l’effet de la température d’admission sur le fonctionnement du moteur. Le deuxième objectif est relatif à la prédiction de l’apparition des phénomènes de condensati
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11

Alan, Dunlavy Choe Song-Yul. "Dynamic modeling of two-phase heat and vapor transfer characteristics in a gas-to-gas membrane humidifier for use in automotive PEM fuel cells." Auburn, Ala., 2009. http://hdl.handle.net/10415/1951.

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12

Quim, Nelson. "Desenvolvimento de uma metodologia de simulação aplicada ao sistema de arrefecimento veicular." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3150/tde-09082007-182717/.

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Este trabalho visa o estudo de uma metodologia de simulação numérica aplicada ao processo de troca térmica do motor de um veículo de passeio. O processo de troca térmica é essencial para evitar o superaquecimento do motor, que provoca o rompimento do filme de óleo lubrificante dos pistões e, conseqüentemente, o seu travamento. Essa metodologia será útil nos estudos preliminares do sistema de arrefecimento de um veículo na fase inicial de projeto por meio de simulações virtuais, o que possibilitará a redução de protótipos, além de proporcionar um ganho em tempo de resposta. A metodologia utiliz
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13

Ng, Eton Yat-Tuen, and eton_ng@hotmail com. "Vehicle engine cooling systems: assessment and improvement of wind-tunnel based evaluation methods." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2002. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080422.100014.

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The high complexity of vehicle front-end design, arising from considerations of aerodynamics, safety and styling, causes the airflow velocity profile at the radiator face to be highly distorted, leading to potentially reduced airflow volume for heat dissipation. A flow visualisation study showed that the bumper bar significantly influenced the cooling airflow, leading to three-dimensional vortices in its wake and generating an area of relatively low velocity across at least one third of the radiator core. Since repeatability and accuracy of on-road testing are prejudiced by weather condit
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14

Baker, Chad Allan. "Simulation, design, and experimental characterization of catalytic and thermoelectric systems for removing emissions and recovering waste energy from engine exhaust." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-12-296.

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An analytical transport/reaction model was developed to simulate the catalytic performance of ZnO nanowires as a catalyst support. ZnO nanowires were chosen because they have easily characterized, controllable features and a spatially uniform morphology. The analytical model couples convection in the catalyst flow channel with reaction and diffusion in the porous substrate material; it was developed to show that a simple analytical model with physics-based mass transport and empirical kinetics can be used to capture the essential physics involved in catalytic conversion of hydrocarbons. The
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15

Velu, Praveen Kumaar. "Study of the effect of brazing on mechanical properties of aluminum alloys for automotive heat exchangers." Thesis, 2017. https://doi.org/10.7912/C2HH21.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Automotive heat exchangers enable the engine to operate at acceptable temperatures. The quality of these heat exchangers plays a key role in vehicle performance because they ensure the integrity of the engine, and can cause significant mechanical complications in case of malfunction. From manufacturing stand point view, the general behavior of the structure in controlling the various modes of damage to heat exchangers becomes an indisputable challenge (influence of the process assembly, design, etc.). The evolution of materials used,
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