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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1211

Parní turbína pro průmyslovou teplárnu / Steam turbine for an industrial CHP plant

Tretera, Michal January 2021 (has links)
This diploma thesis deals with the thermodynamic design of a backpressure steam turbine. The mass flow of steam through the turbine is determined based on the required heat output, which is transferred in a heat exchanger at the turbine outlet. The governing stage of the turbine is in form of an impulse stage, with optimization of degree of reaction included. During the optimization, a suitable rotor blade was chosen as well as its size. The governing stage is followed by fifteen stages of reaction blading with the stage loading coefficient in the range of 2,75 to 2,80. The governing stage and the reaction blading both meet the mechanical strength requirements. Balancing piston, sealing system and bearings are also designed. Finally, a turbine characteristic is created as well as a longitudinal section. The designed turbine has a speed of 10 000 rpm. While supplying the required heat output, it has a terminal power output of 5 863,4 kW and a thermodynamic efficiency of 84,69 %.
1212

Voir l'espace architectural en coupe : exploration du rôle de la coupe dans la conception de l'espace moderne

Costa, Adrienne 01 1900 (has links)
Thèse en cotutelle En vue de l’obtention du Doctorat en Architecture de l’Université de Toulouse Jean Jaurès/ Ecole Nationale Supérieure d’Architecture de Toulouse, Et du Ph.D. Individualisé en Architecture de l’Université de Montréal, Présentée à l’Ecole Doctorale TESC Université de Toulouse Jean Jaurès. Unités de Recherche : LRA – Laboratoire de Recherche en Architecture LEAP – Laboratoire d’Etude de L’Architecture Potentielle / L’état du développement de la théorie sur les modes de représentation ne contient que peu de travaux sur la coupe architecturale, notamment au XXe siècle, époque à laquelle la notion d’espace devient un enjeu architectural propre à la modernité. Cette étude théorique établit les conditions du recours à la coupe dans l’élaboration d’une spatialité qui fournit du sens au projet. Elle propose au préalable sur une investigation des façons de voir un édifice ouvert, de la ruine à l’écorché, permettant d’extraire quelques ressorts disciplinaires de la coupe. L’exploration de sa contribution à « la résolution du projet dans l’espace » qui constitue le cœur de ce travail, est guidée par l’analyse approfondie de la fabrication d’un corpus de coupes d’espaces domestiques emblématiques du XXe siècle. Elle éclaire ainsi, in fine, sur son usage et la connaissance de son statut, au seuil de l’hyper-développement de la modélisation. / Seeing architectural space in section exploration of the section in the conception of modern space. Progress of digital technology allows hyper-developing of representation modes free from instruments which are more and more considered as obsolete to produce new spaces. However, referring to the spread which is given to the section when presenting projects, or in teaching practices, it is often described as a device for stimulating, designing and building. This theorical research observes the use and the status of section at the end of the twentieth century, at the dawning of modelling development. According to Jacques Guillerme and Hélène Vérin , section appears within surveys and studies of antic ruins as a physic reality, the one of a building truncated by its own partial collapse. Many theorists, as Barbara Stafford and Robin Evans , make a connection between section and dissection as opening modes on the inside and by the development of both practices during the Eighteenth century. According to Robin Evans, to reveal the essence of the building is the real function of architectural drawing. The approach is to explore the drawing and the evolution of sections through traces of the designing process, in order to understand how section act as a “générateur” of the project. The research question may be : How, and to which spread, architectural section has a generating dimension of space and it intervene in the elaboration process of modern houses designed after the “Resolving the project in space” ? Based on archives drawings a reference corpus of six modern emblematic houses sections designed between twenties and sixties have been observed in their representation and space. Six other emblematic houses sections conceived from seventies to two thousand ten have been observed through a comparative analysis with the reference corpus. The expected results are to detect the spatial issues raised by the section, to extend its agreed definition as a representation tool to a designing tool and to settle a methodology for analysing cut space.
1213

Dvouosý pohon s EC motory Maxon / Two-axle drive with EC Maxon motors

Nevole, Josef January 2008 (has links)
The content of this master´s thesis is compact complex piece of knowledge from semestral projects 1 and 2. These semestral projects deal with analysis two-axle servo - drive, most common methods design regulators, design regulators and their simulation. Further was analysed quality regulation integral criteria, whereupon connect simulation circular and linear interpolation. Simulation was effected by force of Matlab Simulink. In one’s chapter was tested effect feedforwards to regulation. In closing parts is acquaint with control section position EPOS, and programming environment Open PCS company Maxon. In this environment was biaxial drive with EC motors Maxon and control section EPOS P 24/5 programmed. Results was discusseds with simulation.
1214

Vliv integrálu teploty a času pájení na kvalitu pájeného spoje / Solder Joint Quality based on Heating Factor

Ježek, Vladimír January 2015 (has links)
Semester project deals with the theoretical processing of reflow soldering. Describes the process of reflow soldering, description of intermetallic compounds, the influence of heating factor on the reliability and strength of soldered joints.Also deals with the preparation of cross-section, X-ray control, thermal cycling and description of test boards.
1215

Přemostění řeky a železniční trati na městském obchvatu / Bridge across river and railway line on town bypass

Němec, Martin January 2012 (has links)
This thesis deals with a bridging design of a river and ČD railway at the town bypass . The construction of the bridge is made as a running girder used for the road S 11,5/70 crossing the river Šlapanka and the railway line Šatov – Kolín, TÚ 1201. The work comprises some alternative solutions to this bridging design as well, especially alternatives of cross-section, static system and bridge building process. The static design solution made on a computer includes TDA (Time Dependant Analysis). All suggested alternatives consist of a design of prestressing and rough assessment of chosen sections. The next goal of this thesis is working-out of a project based on chosen alternative of the main bearing construction and a rough calculation of the foundation.
1216

Modernizace trati Brno – Přerov v okolí Vyškova pro rychlost 200 km/h / Modernization of Brno - Přerov railway line in Vyškov area for speed 200 km/h

Hašek, Jan January 2013 (has links)
The objective of this master´s thesis is a design of modernization of railway line no. 300 Brno – Přerov in Vyškov area and its vicinity for speed 200 km/h. The track section is located between railway station Luleč and Ivanovice na Hané. The track is designed in two variants. The first variant is proposed keeping railway line through Vyškov railway station including necessary modification of the railway station. The second variant suggests keeping track outside Vyškov and a connection with the railway station by bridging is designed.
1217

Úprava toku – Luha v Jeseníku n/Odrou / River trainning - The Luha River in Jesenik upon Odra

Tkáč, Matěj January 2013 (has links)
The object of this Master`s thesis is the river training of the Luha river in Jeseník nad Odrou. The thesis is divided into several chapters. In the theoretical introduction, the problems of the sediment flow regime are discussed. Moreover, it deals with the questions associated with the roughness in open channels and adjustment of riparian zones. As a part of the overall proposal of the flow adjustment, the hydraulically most suitable cross section in cunette is proposed. It is done with respect to the desired velocity ratios in the profile. Since the new cunette shape was established, the adjustment of vertical alignment was proposed. The thesis also contains the capacity assessment of the existing channel. Design of adjustment of flood protection measures includes mainly spatial rearrangement and increase the crest of levees with respect to the local conditions. The thesis also suggests the placement of vegetation in the riparian zones. Furhermore, the work deals with problems arising from the flow adjustment considering applicable laws and regulations of the Czech Republic. In the case of project implementation, it is necessary to evaluate these problems independently.
1218

Přeložka silnice II/150 Domaželice - Bystřice p. Hostýnem / Road II/150 Domaželice - Bystřice p. Hostýnem - relocation study

Feichtinger, Lukáš January 2013 (has links)
The aim of the diploma‘s thesis is the project of relaying of road II/150 between Domaželice village and the town of Bystřice pod Hostýnem. The road continues on to the bypass of Čechy village and Domaželice village. This bypass is under construction at this time. Relaying of road II/150 is connected on project of Bystřice pod Hostýnem bypass. The connection of the existing and intended roads is designed. The project includes the accompanying report, the drawing part and the photodocumentation. The project is drawning up in two programs called Bentley Inroads and AutoCAD according to valid standards.
1219

Most na rampě v Brně / Bridge on a ramp in Brno

Vančura, Lukáš January 2014 (has links)
The topic of the thesis is the design and assessment of roadway bridge structure, which is curved in the horizontal plan with a very small radius. Bridges is part of the flyover crossing in Brno. There are designed two variations of which are further developed the variant of the two-chamber cross-section. Calculations and assessments are conducted in according to the valid European standards (Eurocodes). The static calculation is supplemented with a clear technical drawings and visualizations.
1220

Ocenění stavebního díla v ČR a na Ukrajině / The award of the works in the Czech Republic and Ukraine

Shashko, Maryna January 2014 (has links)
The main aim of this master’s thesis is to find out the extent of costs for construction in CZ and Ukraine. Costs for the construction were calculated according to the conditions in CZ an according to the conditions in Ukraine. There were made analysis of differences in construction works, which shows the biggest difference. Costs were determined in crowns for particular line of construction works calculation according to the ordinary calculation pattern which is using in CZ. Conversion of costs from Ukraine currency (UAH) to CZK was made with an actual currency course. The consequence of the work is analysis and evaluation of difference of construction costs.

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