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Teses / dissertações sobre o tema "Solar engines"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 1 de agosto de 2024

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1

Gaitan, Carlos. "Rural electrification in Bolivia through solar powered Stirling engines." Thesis, KTH, Energiteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-148079.

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This study focuses on the rural areas of Bolivia. The village investigated is assumed to have 70 households and one school. Electrical supply will be covered with the help of solar powered Stirling engines. A Stirling engine is an engine with an external heat source, which could be fuel or biomass for example. The model calculates the electrical demand for two different cases. One low level demand and one high level demand. By studying the total electrical demand of the village, the model can calculate a sizing for the Stirling system. However, for the sizing to be more accurate, more research

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2

Clark, David Anthony. "High performance heat engines for solar and biomass applications." Thesis, Queensland University of Technology, 1993. https://eprints.qut.edu.au/226903/1/T%28BE%26E%29%20375_Clark_1993.pdf.

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Generation systems which are fuelled by renewable energy sources, such as solar and biomass, are the environmentally-preferred option for the production of electricity and heat. This study examines the technical and economic feasibility of small-scale (less than 1 MW) renewable generation systems based on a steam-driven engine. Specifically, the study investigates the thermodynamic and mechanical design of the engine. The theory of engine operation is presented in Chapter 3 of this thesis. A computor model of the engine was used to predict the performance of different engine configurat

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3

Tegeder, Troy. "Development of an efficient solar powered unmanned aerial vehicle with an onboard solar tracker /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1723.pdf.

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Gohary, Mohamed Morsy Abdel Meguid Salama el. "Diesel engines and solar energy for electric and cooling applications." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973168242.

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Kheder, Abdul-Sameei Yaseen. "Starting high inertia, high friction loads from limited power sources." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184455.

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At starting, electrical motors require large power and current. This may not be a problem in a large electrical system but it may be very severe for a limited power source like a solar array. If a direct approach is taken the array rating must be 5-6 times the motor rating in order to start the motor and its high inertia high friction load. Batteries have been used to store energy and supply that energy for starting. Batteries need maintenance and their low efficiency is a problem too. In this study a new type of controller has been suggested and developed for the use with D.C. motors. Compute

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Naddeo, Massimo. "Test and development of a solar-hybrid vehicle prototype and turbo-compressor model for automotive engines." Doctoral thesis, Universita degli studi di Salerno, 2016. http://hdl.handle.net/10556/2205.

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2014 - 2015<br>In last decade, Hybrid Electric Vehicles (HEV) have emerged as real alternatives to engine-driven vehicles, in order to reduce fuel consumption and emissions.... [edited by author]<br>XIV n.s.

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Howard, Dustin F. "Modeling, simulation, and analysis of grid connected dish-stirling solar power plants." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34832.

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The percentage of renewable energy within the global electric power generation portfolio is expected to increase rapidly over the next few decades due to increasing concerns about climate change, fossil fuel costs, and energy security. Solar thermal energy, also known as concentrating solar power (CSP), is emerging as an important solution to new demands for clean, renewable electricity generation. Dish-Stirling (DS) technology, a form of CSP, is a relatively new player in the renewable energy market, although research in the technology has been ongoing now for nearly thirty years. The firs

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8

Dentello, Rodrigo Orefise. "Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar /." Guaratinguetá, 2017. http://hdl.handle.net/11449/151835.

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Orientador: Jose Luz Silveira<br>Coorientadora: Eliana Vieira Canettieri<br>Coorientador: Antonio Wagner Forti<br>Banca: Nestor proenza Pérez<br>Banca: Ederaldo Godoy Junior<br>Resumo: O motor Stirling é um motor de combustão externa que opera com diferenças de temperaturas, produzindo trabalho mecânico e eletricidade. Esse tipo de motor opera em um ciclo fechado, que através do uso de uma fonte quente e uma fria, expande e comprime um fluido de trabalho (ar, hélio ou hidrogênio, dentre os mais comuns), fornecendo assim o movimento de um pistão. Pode operar com calor residual e também com a qu

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McHugh, Megan. "Solar Powered Stirling Engine." The University of Arizona, 2017. http://hdl.handle.net/10150/623462.

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Sustainable Built Environments Senior Capstone Project<br>This paper provides a study on the configuration of Stirling engines and the effect using a solar dish as a heat source on efficiency. The Stirling engine was based on the MIT 2.670 design - a Gamma configuration, low temperature differential Stirling engine. Temperature and speed were measured for the base model Stirling engine to determine the initial efficiency. Modifications were planned to add a parabolic mirror as a solar dish and compare the efficiency to the initial design, however, the completed solar Stirling engine testing an

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Ghaem, Sigarchian Sara. "Modeling and Analysis of a Hybrid Solar-Dish Brayton Engine." Thesis, KTH, Kraft- och värmeteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104425.

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11

Chen, Mingfei. "Computer simulation of Ringbom stirling engine with solar pond." Ohio University / OhioLINK, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1182285925.

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Mabrouk, Mohamed Tahar. "Production optimale d’énergie pour une communauté à petite échelle : application à l’optimisation d’une centrale solaire hybride produisant électricité et chaleur." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0163/document.

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Ce travail traite la modélisation et l'optimisation des centrales solaires thermodynamiques à concentration produisant de l'électricité pour l'électrification des zones rurales isolées et mal raccordées au réseau électrique. D’abord, un modèle optique et thermique détaillé des concentrateurs solaires cylindro-paraboliques est présenté permettant l'identification de capteurs existants et la création de corrélations qui peuvent être injectées dans un modèle plus global. Dans un second temps, un modèle original d'un stock de chaleur stratifié de type « lit de roche » est développé. Le nouveau mod

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PRADERE, GUILLAUME LOUIS. "PERFORMANCE SIMULATION OF A THERMOELECTRIC PLANT PREHEATING DIESEL ENGINE SYSTEM VIA SOLAR ENERGY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31824@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Este trabalho tem por objetivo principal a avaliação de desempenho de um sistema piloto de preaquecimento dos motores da central termelétrica Gera Maranhão, via energia solar térmica, em Miranda do Norte, Maranhão, através de uma simulação numérica. Cinco subsistemas independentes, cada um responsável pelo preaquecimento de um motor Wartsila 20V32 de 8,73 MW, foram construídos, somando um total de 500 coletores solares instalados e uma superf

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14

Johnston, Jon R. Jr. "Evaluation of expanders for use in a solar-powered Rankine Cycle Heat Engine." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1298561887.

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Chen, Dejin. "Untersuchungen zur Optimierung eines solaren Niedertemperatur-Stirlingmotors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2005. http://nbn-resolving.de/urn:nbn:de:swb:14-1111049328086-35473.

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Das Ziel der vorliegenden Dissertationsschrift bestand darin, für die äquatornahen Regionen mit hoher solarer Einstrahlung einen solaren Niedertemperatur-Stirlingmotor zu entwickeln, berechnen, konstruieren und fertigen, experimentelle Untersuchungen durchzuführen sowie die Ergebnisse auszuwerten. Des Weiteren war im Rahmen dieser Arbeiten die Gültigkeit der Schmidt-Theorie für den Niedertemperatur-Stirlingmotor zu überprüfen. Im Rahmen der durchgeführten Untersuchungen wurden drei Varianten des solaren Niedertemperatur-Stirlingmotors(Stirlingmotor III, IV und IV-A)konstruiert und gefertigt so

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Börner, Reina. "Modélisation d'échangeur de chaleur : analyse théorique et expérimentale du comportement en régime transitoire : particularisation aux capteurs solaires et optimisation des systèmes moteurs associés." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL011N.

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La filière solaire des centrales actuellement existantes se base essentiellement sur des cycles classiques à vapeur. Mais il est aussi possible de développer une filière gaz en utilisant des turbines à gaz avec des cycles ouverts ou fermés. Dans cette optique a été développée une méthode générale d'optimisation du rendement d'un système capteur solaire à air - moteur thermique, en s'appuyant sur un fonctionnement en cycle de CARNOT puis en cycle de BRAYTON avec ou sans régénération. Les écarts de température à la source et au puits, les pertes thermiques directes entre source et puits sont pri

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17

Hoetman, Agus Rusyana. "A computational and experimental study of a solar powered Rankine cycle engine for use in Jakarta." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292902.

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Mardanpour, Pezhman. "Effects of engine placement and morphing on nonlinear aeroelastic behavior of flying wing aircraft." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50268.

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Effects of engine placement on flutter characteristics of a very flexible high-aspect-ratio wing are investigated using the code NATASHA (Nonlinear Aeroelastic Trim And Stability of HALE Aircraft). The analysis was validated against published results for divergence and flutter of swept wings and found to be in excellent agreement with the experimental results of the classical wing of Goland. Moreover, modal frequencies and damping obtained for the Goland wing were found in excellent agreement with published results based on a new continuum-based unsteady aerodynamic formulation. Gravity for th

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19

Macháček, Jan. "Stirlingův termodynamický cyklus." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233504.

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My doctoral thesis deals with study and analyse of Stirling thermodynamical cycle. Cycle that is composed of two isochoras and two isotherms. I describe functional principle of Stirling engine and all its parts, constructional variations of pistons system and possible engine working modes. Next chapter contains analyse of engine constructional parameters. Measuring of torque and load characteristics, p - V schemes and output work for various engine inputs is part of this analyse. There is composed mathematical engine characterization by means of Schmidt theory in chapter five. Mathematical cha

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Chen, Dejin. "Untersuchungen zur Optimierung eines solaren Niedertemperatur-Stirlingmotors." Doctoral thesis, [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=974523542.

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Recht, Daniel. "Energetic Beam Processing of Silicon to Engineer Optoelectronically Active Defects." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10305.

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This thesis explores ways to use ion implantation and nanosecond pulsed laser melting, both energetic beam techniques, to engineer defects in silicon. These defects are chosen to facilitate the use of silicon in optoelectronic applications for which its indirect bandgap is not ideal. Chapter 2 develops a kinetic model for the use of point defects as luminescence centers for light-emitting diodes and demonstrates an experimental procedure capable of high-throughput screening of the electroluminescent properties of such defects. Chapter 3 discusses the dramatic change in optical absorption obse

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22

Sakai, Tadashi. "A Study of Variable Thrust, Variable Specific Impulse Trajectories for Solar System Exploration." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4904.

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A study has been performed to determine the advantages and disadvantages of variable thrust and variable specific impulse (Isp) trajectories for solar system exploration. There have been several numerical research efforts for variable thrust, variable Isp, power-limited trajectory optimization problems. All of these results conclude that variable thrust, variable Isp (variable specific impulse, or VSI) engines are superior to constant thrust, constant Isp (constant specific impulse, or CSI) engines. However, most of these research efforts assume a mission from Earth to Mars, and some of them

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23

Dentello, Rodrigo Orefise [UNESP]. "Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151835.

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Submitted by Rodrigo Orefise Dentello null (rodrigodentello@gmail.com) on 2017-09-26T19:16:11Z No. of bitstreams: 1 Dissertação de Mestrado Rodrigo Orefise Dentello.pdf: 3135657 bytes, checksum: b5e87e13e54b4ab1c494888ed13cc131 (MD5)<br>Rejected by Monique Sasaki (sayumi_sasaki@hotmail.com), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: No campo “Versão a ser disponibilizada online imediatamente” foi informado que seria disponibilizado o texto completo porém no campo “Data para a disponibilização do texto completo” foi informado que o texto completo deve

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Joshi, Keyur Bhanuprasad. "Modeling of Bio-inspired Jellyfish Vehicle for Energy Efficient Propulsion." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19256.

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Jellyfish have inhabited this planet for millions of years and are the oldest known metazoans that swim using muscles. They are found in freshwater sources and in oceans all over the world. Over millions of years of evolution, they have adapted to survive in a given environment. They are considered as one of the most energy efficient swimmers. Owing to these characteristics, jellyfish has attracted a lot of attention for developing energy efficient unmanned undersea vehicles (UUVs).<br /> The goal of this thesis is to provide understanding of the different physical mechanisms that jellyfish em

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Ramsell, Daniel. "Improve and optimize search engine : To provide better and relevant content for the customer." Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-36805.

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This report has conducted a research of comparing a few open source search engines. The research contains two evaluation processes, the first evaluation will evaluate each open source search engine found on today’s market. Points will be given between one to five points depending on how well the open source search engine meets the requirements. The open source search engine with the highest score will then be chosen for implementation. The first evaluation resulted in Elasticsearch being the selected open source search engine and will continue to the implementation phase. The second evaluation

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Dočekal, David. "Měřicí pracoviště pro systém vzdálené dodávky energie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242852.

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This thesis is focused on the creation of measuring workplace for remote power supply system. This is the measuring of the workplace, engaged in the processing of measured data, the production of electrical energy made by a photovoltaic panel and wind turbines. In the theoretical part, the reader is familiar with the issue of renewable energy sources. The first chapter is about the energy of the wind. Here is described the emergence of the wind, the basic division of wind power, through the production of electrical energy to the measurement itself. The second chapter deals with the solar energ

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Strava, Jan. "Konstrukce malého parního motoru pro využití sluneční energie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417723.

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Possible modern application of piston steam engine is electricity production using steam made by solar energy. This diploma thesis focuses on designing such piston steam engine Described solution would be effective as an off grid electricity generator, because alternative source of steam could be added for occasions, when sunlight is not powerfull enough for steam production.

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Qandil, Hassan Darwish Hassan. "Investigations of the Fresnel Lens Based Solar Concentrator System through a Unique Statistical-Algorithmic Approach." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1609121/.

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This work investigates the Fresnel-lens-based solar concentrator-receiver system in a multi-perspective manner to design, test and fabricate this concentrator with high-efficiency photon and heat outputs and a minimized effect of chromatic aberrations. First, a MATLAB®-incorporated algorithm optimizes both the flat-spot and the curved lens designs via a statistical ray-tracing methodology of the incident light, considering all of its incidence parameters. The target is to maximize the solar ray intensity on the receiver's aperture, and therefore, achieve the highest possible focal flux. The al

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Rahmani, Mustapha Amine. "Gestion de l'énergie d'une micro-centrale solaire thermodynamique." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT077/document.

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Cette thèse s'inscrit dans le cadre du projet collaboratif MICROSOL, mené par Schneider Electric, et qui oeuvre pour le développement de micros centrales solaires thermodynamiques destinées à la production d'électricité en sites isolés (non connectés au réseau électrique) en exploitant l'énergie thermique du soleil. Le but de cette thèse étant le développement de lois de commande innovantes et efficaces pour la gestion de l'énergie de deux types de micros centrales solaires thermodynamiques : à base de moteur à cycle de Stirling et à base de machines à Cycle de Rankine Organique (ORC). Dans un

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Filho, Ari do Amaral Torres. "AnÃlise da utilizaÃÃo de mÃtodos Ãgeis no desenvolvimento de ambientes virtuais de aprendizagem: um estudo de caso do Solar 2.0." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12689.

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FundaÃÃo de Amparo Ã Pesquisa do Estado do CearÃ<br>Nas duas Ãltimas dÃcadas houve um considerÃvel avanÃo no uso de Tecnologias da InformaÃÃo e ComunicaÃÃo Digitais no processo de ensino e aprendizagem, tanto na modalidade de EducaÃÃo presencial quanto a distÃncia. Neste contexto, o uso de Ambientes Virtuais de Aprendizagem - softwares criados para o suporte a cursos atravÃs da Internet - vÃm crescendo e seu acesso se tornando cada vez mais diversificado, indo de computadores desktop a celulares smartphones. Desta forma, a complexidade de criaÃÃo destes ambientes se torna cada vez maior e exig

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Andrabi, Liaqat Hussain. "Intelligent Retrieval and Clustering of Inventions." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187018.

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Ericsson’s Region IPR & Licensing (RIPL) receives about 3000 thousands Invention Disclosures (IvDs) every year submitted by researchers as a result of their R&D activities. To decide whether an IvD has a good business value and a patent application should be filed; a rigorous evaluation process is carried out by a selected Patent Attorney (PA). One of most important elements of the evaluation process is to find prior art similar, including similar IvDs that have been evaluated before. These documents are not public and therefore can’t be searched using available search tools. For now t

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Ali, Miran. "Changing a user’s search experience byincorporating preferences of metadata." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154608.

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Implicit feedback is usually data that comes from users’ clicks, search queries and text highlights. It exists in abun- dance, but it is riddled with much noise and requires advanced algorithms to properly make good use of it. Several findings suggest that factors such as click-through data and reading time could be used to create user behaviour models in order to predict the users’ information need. This Master’s thesis aims to use click-through data and search queries together with heuristics to create a model that prioritises metadata-fields of the documents in order to predict the informat

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Tîrcă-Dragomirescu, Georgiana. "Optimisation exergoéconomique des systèmes de trigénération d'énergie." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0164/document.

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Voir résumé étendu en français en fin de thèse<br>In the actual energetic and economic context, energy polygeneration represents the answer regarding the efficient use of a fuel. This solution would diminish the losses associated to the classical methods of energy production and, as a result, would increase the installations' efficiency. The polygeneration systems (cogeneration/trigeneration of energy), consist of various technologies that offer alternatives to the global problems linked to energy, such as energy scarcity, energy supply security, emissions control from the production of energy

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Vedin, Felix, and Camilla Sandström. "A comparison study of PV and battery technologies for EWB off-grid electrification projects in Sub-Saharan Africa." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235497.

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Only 10 % of the rural population in Sub-Saharan Africa has access to electricity. At the same time the Sub-Saharan countries are close to the equator and get many sun hours a day, leading to a huge potential for solar energy. This report aims to compare different PV system components for use in Sub-Saharan Africa to facilitate EWB for their work in electrification projects in the areas. The PV system will be compared with the following factors: economic, adoptability, scalability, environmental impact and efficiency, weighed in that order. A case simulation was made for a village around Nairo

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Nico, Thibaut. "Étude et développement de solutions de relocalisation d'objets sous-marins par des véhicules sous-marins hétérogènes." Thesis, Brest, École nationale supérieure de techniques avancées Bretagne, 2019. http://www.theses.fr/2019ENTA0005.

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Dans le contexte de guerre des mines (MCM), il est important de revisiter les objets potentiellement dangereux afin de les identifier et les neutraliser s’il s’agit effectivement de mines. Cette dangereuse tâche était habituellement réalisée par des plongeurs démineurs qui sont petit à petit remplacés par des drones sous-marins. Le design « low cost » des robots de revisite/destruction de mines ne permet en général pas de garantir la revisite d’une cible géolocalisée en allant droit dessus. De plus, le robot pourrait commencer sa mission sous-marine à une distance éloignée et l’absence de posi

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Torres, Filho Ari do Amaral. "Análise da utilização de métodos ágeis no desenvolvimento de ambientes virtuais de aprendizagem: um estudo de caso do Solar 2.0." reponame:Repositório Institucional da UFC, 2014. http://www.repositorio.ufc.br/handle/riufc/13359.

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TORRES FILHO, A. A. Análise da utilização de métodos ágeis no desenvolvimento de ambientes virtuais de aprendizagem: um estudo de caso do Solar 2.0. 2014. 158 f. Dissertação (Mestrado em Ciência da Computação) - Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2014.<br>Submitted by Daniel Eduardo Alencar da Silva (dealencar.silva@gmail.com) on 2015-01-23T20:18:36Z No. of bitstreams: 1 2014_dis_aatfilho.pdf: 5052662 bytes, checksum: bbc494f5731e2ba4a447896641ee5d11 (MD5)<br>Approved for entry into archive by Rocilda Sales(rocilda@ufc.br) on 2015-09-23T16:29:47Z (GMT) No. of bitst

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Mathieu, Antoine. "Contribution à la conception et à l'optimisation thermodynamique d'une microcentrale solaire thermo-électrique." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0027/document.

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En ce début de millénaire 1,4 Milliards d'humains, parmi les plus démunis de la planète, vivent dans des sites isolés et ne bénéficient pas de réseaux de distribution d'énergie. Leur besoin en électricité est modeste, mais important en terme d'usages : accès aux soins médicaux et à l'instruction, communication, développement d'économies locales. C'est face à ce constat que Schneider Electric Industries relève, depuis 2009, le défi de concevoir et réaliser des microcentrales solaires thermodynamiques, concurrentielles à d'autres solutions, pour fournir à ces populations une énergie électrique f

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Khan, MD Ershad Ullah. "Renewables Based Polygeneration for Rural Development in Bangladesh." Doctoral thesis, KTH, Kraft- och värmeteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-205556.

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Despite the country's rural electrification programme, kerosene is the predominant source for lighting, and unsustainable and polluting woody biomass is virtually the only option available for cooking. The rural population also struggles with unsafe drinking water in terms of widespread arsenic contamination of well water. The present work has taken an integrated approach in an attempt to mitigate problems through small-scale polygeneration, a concept linking renewable energy sources to these energy needs via novel energy conversion systems. Anaerobic digesters (AD) for biogas production are p

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39

Rousselle, Denis. "Classification d’objets au moyen de machines à vecteurs supports dans les images de sonar de haute résolution du fond marin." Electronic Thesis or Diss., Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0020.

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Cette thèse a pour objectif d'améliorer la classification d'objets sous-marins dans des images sonar haute résolution. En particulier, il s'agit de distinguer les mines des objets inoffensifs parmi une collection d'objets ressemblant à des mines. Nos recherches ont été dirigées par deux contraintes classiques en guerre de la mine : d'une part, le manque de données et d'autre part, le besoin de lisibilité des décisions. Nous avons donc constitué une base de données la plus représentative possible et simulé des objets dans le but de la compléter. Le manque d'exemples nous a mené à utiliser une r

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40

Harant, Miroslav. "Využití solární energie pro elektromobilitu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-413046.

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The thesis deals with the use of solar energy for electromobility. First, the potential of electromobility on the current market is theoretically discussed. This issue includes mainly the producers of electrically powered vehicles, the issue of electric energy storage and the real applications of fast charging and photovoltaic charging stations. In the next part, electric cars are analyzed, which use solar energy for their function and their efficiency is compared with the effiency of combustion engines. The main part of this thesis is the design of photovoltaic charging station for electric v

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41

Harant, Miroslav. "Využití solární energie pro elektromobilitu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413232.

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The thesis deals with the use of solar energy for electromobility. First, the potential of electromobility on the current market is theoretically discussed. This issue includes mainly the producers of electrically powered vehicles, the issue of electric energy storage and the real applications of fast charging and photovoltaic charging stations. The second part of the diploma thesis deals with the measurement of electric car consumption and the evaluation of measurement results. In the next part, electric cars are analyzed, which use solar energy for their function and their efficiency is comp

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42

Fula, Rojas Manuel Alejandro. "Modélisation thermique, thermodynamique et expérimentation d'un moteur ericsson a air chaud a cycle de joule." Thesis, Pau, 2015. http://www.theses.fr/2015PAUU3055/document.

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Avec l'épuisement des ressources naturelles, notamment les sources d’énergies fossiles, les énergies renouvelables sont à nouveau considérées comme une alternative réelle pour la transition énergétique des pays industrialisés.Les moteurs à apport de chaleur externe comme le Stirling et son « cousin » le moteur Ericsson peuvent valoriser de multiples sources -renouvelables ou non- d'énergie thermique. Le moteur Ericsson est ainsi particulièrement bien adapté pour la conversion de l’énergie solaire ou de la biomasse en électricité dans des applications de microcogénération.Cette thèse s’inscrit

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43

Rousselle, Denis. "Classification d’objets au moyen de machines à vecteurs supports dans les images de sonar de haute résolution du fond marin." Thesis, Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0020.

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Cette thèse a pour objectif d'améliorer la classification d'objets sous-marins dans des images sonar haute résolution. En particulier, il s'agit de distinguer les mines des objets inoffensifs parmi une collection d'objets ressemblant à des mines. Nos recherches ont été dirigées par deux contraintes classiques en guerre de la mine : d'une part, le manque de données et d'autre part, le besoin de lisibilité des décisions. Nous avons donc constitué une base de données la plus représentative possible et simulé des objets dans le but de la compléter. Le manque d'exemples nous a mené à utiliser une r

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44

Kmeť, Jozef. "Problematika snižování tepelné odrazivosti zrcadel solární elektrárny se Stirlingovým motorem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231827.

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This thesis describes a concentrating solar power using a Stirling engine. The problems encountered during construction and operation. I focus mainly on problems derating dusting and icing. The second part of this work is the experimental design of the stand with long-term measurement of dusting depending on the reflectivity of mirrors and their degradation under various conditions. First measurement is stated and estimation of long-term results.

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45

Bouvier, Jean-Louis. "Étude expérimentale d'une installation de micro-cogénération solaire couplant un concentrateur cylindro-parabolique et un moteur à cycle de Hirn." Thesis, La Rochelle, 2014. http://www.theses.fr/2014LAROS031/document.

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L’objectif de cette thèse est d’étudier expérimentalement les performances énergétiques d'une installation de micro-cogénération solaire. Le prototype réalisé est constitué d'un concentrateur cylindro-parabolique associé à un moteur à vapeur fonctionnant suivant un cycle de Hirn (Rankine avec surchauffe). Les originalités de ce projet sont l’utilisation de l’énergie solaire, renouvelable et inépuisable mais intermittente, la génération directe de vapeur au sein d'un concentrateur de taille réduite (46,5 m²), le système de suivi solaire sur deux axes et le couplage à un moteur à piston non lubr

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Chi-Cho, Chih-Ming, and 紀卓志明. "Generate Electricity from solar powered Stirling Engines." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/86424902155917892258.

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碩士<br>萬能科技大學<br>工程科技研究所<br>97<br>A small Stirling engine generator driven by solar energy comprises a disk to concentrate sunlight, a device to track the sun, a Stirling engine and a generator. A program, written in Mat lab and Lab View and based on the Schmidt model, was used to analyze the performance of a Stirling engine and to evaluate the factors critical to its performance. The results of this theoretical simulation are as follows. The work done per cycle by a Stirling engine increases with increasing difference of temperature between the hot and cold ends of that engine. Decreasing th

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Pudney, Peter. "Optimal energy management for solar-powered cars." 2000. http://arrow.unisa.edu.au:8081/1959.8/24969.

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Solar powered cars may never be practical. Nevertheless, in the 1996 World Solar Challenge the Honda Dream carried two people 3000km across Australia at an average speed of 90km/h, powered only by sunlight. You clearly don?t need a 2500kg machine powered by polluting fuels to get you to work and back each day. The Australian Aurora 101 solar powered car requires less than 2000W of power to travel at 100km/h. To achieve such high performance the car has high aerodynamic efficiency, motor efficiency greater than 98%, low rolling resistance tyres, and weighs less than 280kg with the driver in it.

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Gohary, Mohamed Morsy Abdel Meguid Salama el [Verfasser]. "Diesel engines and solar energy for electric and cooling applications / von Mohamed Morsy Abdel Meguid Salama el Gohary." 2004. http://d-nb.info/973168242/34.

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Tsung, Yueh Tsai, and 蔡宗岳. "Heat pipe-type Stirling engine solar." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/11976965447455688477.

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碩士<br>萬能科技大學<br>工程科技研究所<br>99<br>In this paper, we develop a Fresnel lens focusing sunlight, heating the heat pipe, the use of heat pipe working fluid in the phase change occurs, the temperature the same way, through the heat pipe heat transfer to the Stirling solar thermal heating at, The heating temperature difference Stirling engine, Stirling engine to operate, thus promoting hair dryer power, this low temperature difference Stirling engine can be used for geothermal power generation. Heat pipe-type Stirling engine solar power technology can be further combined with the building, and then f

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50

Chang, Yin-Yu, and 張吟瑜. "CFD simulation of a solar Stirling engine." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/snwcq4.

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碩士<br>淡江大學<br>化學工程與材料工程學系碩士班<br>102<br>In a solar desalination project, an alpha type solar Stirling engine is developed from a commercial diesel engine by adding heater, cooler and regenerator as well as modifying crankshaft system. In this thesis, the 3-D Computational Fluid Dynamic (CFD) simulation of a single axi-symmetric channel of the engine is presented. The FLUENT software and the RNG k-ε turbulence model are employed for the simulation. Special treatments are adopted for the simulation, including the piston is defined as a dynamic boundary, the cylinder spaces use dynamic mesh and no

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