A ênfase deste trabalho está voltada ao desenvolvimento de um novo sistema de limpeza para a colheitadeira de grãos visando, principalmente, a utilização de uma nova geometria. O design de um sistema com peneiras rotativas vem de encontro a todos os sistemas conhecidos até o momento, este sistema visa eliminar sistemas eletrônicos cada vez mais complexos e caros. Uma descrição sobre os sistemas de colheita e máquinas agrícolas, principalmente colheitadeiras, é apresentada neste trabalho, já que a bibliografia sobre este assunto é bastante restrita. A utilização de métodos computacionais, voltados à análise de fluídos foi utilizada com o intuito de nortear o desenvolvimento de protótipos reais. O método computacional dos fluídos dinâmicos simula diversas hipóteses de maneira mais rápida e mais barata até que sejam alcançados resultados suficientemente bons que compensem a fabricação de um protótipo real. Com o protótipo real os resultados virtuais podem ser validados e comparados com outros sistemas. Os resultados obtidos foram bons, a peneira rotativa tem um ótimo desempenho em testes realizados no plano, com perdas inferiores comparativamente às peneiras planas. Nos testes realizados com inclinação o desempenho não foi bom, devido a alguns problemas no duto de ar. Com relação à qualidade dos grãos separados, não foram detectadas quaisquer avarias que pudessem ter sido resultadas da peneira. / The emphasis of this work is dedicated to the development of a new cleaning system for grain harvester aiming mainly to use a new geometry in this part of the machine. The design of a system with rotary sieves comes against all systems known at this time; this system seeks to eliminate electronic systems increasingly complex and expensive. A description of the harvesting systems and agricultural machinery, harvesters mainly, is been presented in this work, since the literature on this subject is very limited. The use of computational methods, focused on the analysis of fluid was used in order to guide the development of prototypes. The method of computational fluid dynamic simulates scenarios faster and cheaper to achieve results that are good enough to compensate the fabrication of a real prototype. With the real prototype, virtual results can be validated and compared with other systems. The results achieved were good. The rotary sieve cleaning system shows excellent performance when testing on level ground with lower losses than a flat sieve system. In tests on slopes, the performance was not as good due to some problems in the air duct. With regard to grain quality, no mechanical damage that could have been produced by the screens was detected in either test.

CONCEPTUAL DESIGN, TESTING AND MANUFACTURING OF AN INDUSTRIAL TYPE ELECTRO-HYDRAULIC VACUUM SWEEPER SAHIN, Emre M.Sc., Department of Mechanical Engineering Supervisor : Prof. Dr. Kahraman ALBAYRAK Co-Supervisor: Prof. Dr. Bilgin KAFTANOGLU September 2011, 156 pages In this thesis, conceptual design, testing, development and manufacturing processes of the cleaning (elevator and fan system) and electro-hydraulic systems of an industrial type vacuum sweeper are presented. Thesis is financially supported by Ministry of Science, Industry and Technology (Turkey) and M&uuml / san A.S. (Makina &Uuml / retim Sanayi ve Ticaret A.S.) under the SAN-TEZ projects with numbers 00028.STZ.2007-1 and 00623.STZ.2010-1. The main purpose is to make critical design changes on existing fan system, designing a new elevator system and eventually obtaining efficient and powerful cleaning system. For design, Catia and SolidWorks softwares are used. Within the SAN-TEZ project, all CFD solutions were provided by Punto Engineering. Unlike many industrial type vacuum sweepers, new design will be electrically and electro-hydraulic controlled. All cleaning system of new &lsquo / M&Uuml / SAN Vacuum Sweeper&rsquo / will be activated by using hydraulic motors (traction system including hydraulic system is driven by the brushless DC electric motor as well) and the power of all these systems is supplied by batteries which are placed in the middle of the vehicle. Elevator and fan system can be considered as a group for a street sweeper for cleaning operations. Fan and elevator systems both gain an important place especially in cleaning operations due to lifting heavy and small particles from the ground. Fan system is used for sucking the small materials and dust by vacuum and elevator system is used to elevate heavier materials such stones, bottles, cans. Therefore, it is essential to design an efficient and powerful fan and elevator system for a street sweeper. The thesis work includes the design, development, supervision of manufacturing, simulation and testing of the cleaning (elevator and fan systems) and electro-hydraulic system of the street cleaners.

A ênfase deste trabalho está voltada ao desenvolvimento de um novo sistema de limpeza para a colheitadeira de grãos visando, principalmente, a utilização de uma nova geometria. O design de um sistema com peneiras rotativas vem de encontro a todos os sistemas conhecidos até o momento, este sistema visa eliminar sistemas eletrônicos cada vez mais complexos e caros. Uma descrição sobre os sistemas de colheita e máquinas agrícolas, principalmente colheitadeiras, é apresentada neste trabalho, já que a bibliografia sobre este assunto é bastante restrita. A utilização de métodos computacionais, voltados à análise de fluídos foi utilizada com o intuito de nortear o desenvolvimento de protótipos reais. O método computacional dos fluídos dinâmicos simula diversas hipóteses de maneira mais rápida e mais barata até que sejam alcançados resultados suficientemente bons que compensem a fabricação de um protótipo real. Com o protótipo real os resultados virtuais podem ser validados e comparados com outros sistemas. Os resultados obtidos foram bons, a peneira rotativa tem um ótimo desempenho em testes realizados no plano, com perdas inferiores comparativamente às peneiras planas. Nos testes realizados com inclinação o desempenho não foi bom, devido a alguns problemas no duto de ar. Com relação à qualidade dos grãos separados, não foram detectadas quaisquer avarias que pudessem ter sido resultadas da peneira. / The emphasis of this work is dedicated to the development of a new cleaning system for grain harvester aiming mainly to use a new geometry in this part of the machine. The design of a system with rotary sieves comes against all systems known at this time; this system seeks to eliminate electronic systems increasingly complex and expensive. A description of the harvesting systems and agricultural machinery, harvesters mainly, is been presented in this work, since the literature on this subject is very limited. The use of computational methods, focused on the analysis of fluid was used in order to guide the development of prototypes. The method of computational fluid dynamic simulates scenarios faster and cheaper to achieve results that are good enough to compensate the fabrication of a real prototype. With the real prototype, virtual results can be validated and compared with other systems. The results achieved were good. The rotary sieve cleaning system shows excellent performance when testing on level ground with lower losses than a flat sieve system. In tests on slopes, the performance was not as good due to some problems in the air duct. With regard to grain quality, no mechanical damage that could have been produced by the screens was detected in either test.

A ênfase deste trabalho está voltada ao desenvolvimento de um novo sistema de limpeza para a colheitadeira de grãos visando, principalmente, a utilização de uma nova geometria. O design de um sistema com peneiras rotativas vem de encontro a todos os sistemas conhecidos até o momento, este sistema visa eliminar sistemas eletrônicos cada vez mais complexos e caros. Uma descrição sobre os sistemas de colheita e máquinas agrícolas, principalmente colheitadeiras, é apresentada neste trabalho, já que a bibliografia sobre este assunto é bastante restrita. A utilização de métodos computacionais, voltados à análise de fluídos foi utilizada com o intuito de nortear o desenvolvimento de protótipos reais. O método computacional dos fluídos dinâmicos simula diversas hipóteses de maneira mais rápida e mais barata até que sejam alcançados resultados suficientemente bons que compensem a fabricação de um protótipo real. Com o protótipo real os resultados virtuais podem ser validados e comparados com outros sistemas. Os resultados obtidos foram bons, a peneira rotativa tem um ótimo desempenho em testes realizados no plano, com perdas inferiores comparativamente às peneiras planas. Nos testes realizados com inclinação o desempenho não foi bom, devido a alguns problemas no duto de ar. Com relação à qualidade dos grãos separados, não foram detectadas quaisquer avarias que pudessem ter sido resultadas da peneira. / The emphasis of this work is dedicated to the development of a new cleaning system for grain harvester aiming mainly to use a new geometry in this part of the machine. The design of a system with rotary sieves comes against all systems known at this time; this system seeks to eliminate electronic systems increasingly complex and expensive. A description of the harvesting systems and agricultural machinery, harvesters mainly, is been presented in this work, since the literature on this subject is very limited. The use of computational methods, focused on the analysis of fluid was used in order to guide the development of prototypes. The method of computational fluid dynamic simulates scenarios faster and cheaper to achieve results that are good enough to compensate the fabrication of a real prototype. With the real prototype, virtual results can be validated and compared with other systems. The results achieved were good. The rotary sieve cleaning system shows excellent performance when testing on level ground with lower losses than a flat sieve system. In tests on slopes, the performance was not as good due to some problems in the air duct. With regard to grain quality, no mechanical damage that could have been produced by the screens was detected in either test.

This master's thesis deals with current situation of medical waste management in the Czech Republic and it also analyzes the quality of existing units for thermal treatment of the medical waste. In the second part of the thesis, available off-gas cleaning methods were described as well as the emission limits for waste incineration, which correspond to the legislative regulations effective in the Czech Republic. These emission limits are considered as input data for off-gas cleaning system design. In the main part of this thesis, two technological solutions of off-gas cleaning methods for Up-to-Date medical waste incineration unit were designed. The unit is designed for energy utilization of 1400 tons of medical waste accumulated during one year in a regional hospital of model region. From given input parameters, two appropriate apparatus concepts were created. After that, both concepts were evaluated either form energetic point of view as well as from material one. From these evaluations, key apparatuses of both concepts were designed which provided necessary design dimensions for further investment price estimation of each individual key apparatus. In the conclusion of this thesis, the best solution of an off-gas cleaning method was picked according to the comparison of operating and investment costs.