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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.
91

Návrh horizontální spalovací komory / Design of horizontal combustion chamber

Nesiba, Petr January 2008 (has links)
This diploma thesis deals with a design of the water cooled horizontal combustion chamber for testing of burners with the maximum heat duty up to 2.5 MW. The design of horizontal combustion chamber is carried out with regard to the testing of different burner types. The proposal is elaborated up drawing documentation. The theoretical part of the diploma thesis describes briefly basic necessary theory about the classification of combustion chambers and burners. It was described advantages and disadvantages of basic group of burners. Last chapter of the theoretical part deals with a description of burner testing. The practical part of the diploma thesis consists of necessary calculations required for the determination of basic geometry of the combustion chamber and verification of the assumptions first of all the assumption of the bubbling evaporation of the water on the internal shell. It was carried out the strength calculation of the combustion chamber according to the standards and by means of Finite Element Method.
92

Klima komora pro zkoušení osobních vozidel / Climate testing room for personal vehicles

Málek, Ludvík January 2010 (has links)
The diploma thesis deals with the design of testing equipment, a climate chamber in particular, to simulate external weather conditions. The chamber walls are made of socalled sandwich insulation panels. Based on the wall thermal properties, heat loss of the chamber was calculated. The conditioned air is supplied by a distribution channel at sides of the chamber. The exhaust air leaves the chamber in the ceiling zone. The ventilation unit is located on the ceiling. The design includes the integration of the UV lamp, simulating sunlight. The chamber will allow the weather effects on the microclimate inside a car to be studied. Furthermore, the sunlight simulations can be carried out in the chamber to detect polymers or varnish aging, and the fading of colours.
93

Parní kotel na spalování kontaminovaného dřeva / Steam boiler for demolition wood

Mazal, Lubomir January 2010 (has links)
The threat of depletion of fossil fuels is the driving force to diversify energy sources in the Czech Republic respectively in the European Union but also worldwide. One of these potential sources are being biomass boilers. The construction of these boilers has expanded in recent years because of government support for the construction of clean energy sources. Whether it is a burning of clean biomass or just incorporation of biomass to fossil fuels, teh substitution of fossil fuels and biomass boilers are the ideal solution. Their major advantages include significant reductions in emissions, mainly sulfur compounds, organic closure of the cycle of CO2 and disposal costs of spent residue.
94

Parní kotel na dřevní štěpku s pískem 92,5t/h / Steam boiler for biomass and sand 92,5t/h

Špiláček, Michal January 2011 (has links)
This master’s thesis is dealing with design of steam boiler for wood chips. Wood chips are considered as biomass and so the steam boiler is considerate to enviroment. Main purpose of this work is calculation of size and number of water/steam heating surfaces so the boiler can produce steam with required parametres of temperature, pressure and amount.
95

Výpočtová predikce charakteristických parametrů procesu spalování / Calculation prediction of characteristic parameters of combustion process

Táborský, Miroslav January 2012 (has links)
The present thesis is focused on calculation prediction of characteristic parameters of combustion process in combustion chamber which is installed at burners testing laboratory. In the thesis basic theoretical knowledge needed for description of heat transfer in process combustion equipment are given. The Plug Flow Furnace Model is based on this knowledge. This model is used to evaluation of specific heat flux in tube furnaces. In the next step the Plug – Flow model is modified and adapted on the combustion chamber. Obtained results are compared with a measured data. By this comparison quality of this model is assessed.
96

Navrhněte parní kotel s přirozenou cirkulací na spalování dřevní štěpky / Steam boiler with natural cirkulation for wood cheaps burning

Vaculík, Jaroslav January 2014 (has links)
The purpose of this Diploma Thesis is the construction design of the steam boiler with natural circulation for the combustion of wood biomass according to the specified parameters. It is the boiler with the power of 12 tons per hour of superheated vapor output parameters of 3,3 Mpa at a temperature of 400 °C and a temperature of feed water 105 °C. For the specified parameters I first calculated the stoichiometric calculations, boiler efficiency, and followed by using geometrical parameters of the blocks and thermal calculations set design and the number of heat transfer surfaces, depending on the input parameters of the air and water and output parameters of vapor. The work also includes drawings of the boiler.
97

Plnicí potrubí s proměnným průřezem pro 16V motor / Variable Intake manifold for 16V Engine

Konečný, Lukáš January 2014 (has links)
Aim of the diploma thesis is to design intake ducting with variable cross-section for 16V diesel engine consisting from divided intake manifold and divided ejector. Cross-section variability is ensured by a swirl flap placed in the divided ejector. Next aim of thesis is to provide drawing documentation for production of samples. For designing was used PTC Creo system and software GeomCaliper. Also was taken account of manufacturing of the parts with sand-casting, especially to guarantee trouble-free taking out of models from the moulds, and taking out of cores from core moulds, and also for machinability of some elements. Introduction of thesis is focused on diesel engine emissions and ways of their reduction.
98

Sací potrubí jednoválcového motoru / Intake Manifold for Single-cylinder Engine

Pavličík, Lukáš January 2014 (has links)
The aim of this diploma thesis is to create a thermodynamic computational model of a single cylinder IC engine for the Formula SAE car. The single cylinder SI engine KTM 500 EXC is considered as a powertrain unit. The intake manifold of the serial enduro motorcycle is modified according to the Formula SAE 2014 rules. Analysis of the one dimensional flow is performed by using Lotus engine simulation software.
99

Návrh mlýnského okruhu kotle PK 4S v Teplárně Košice / The Proposal of Coal Mill system for Boiler PK 4S

Kubínek, Martin January 2015 (has links)
The aim of this thesis is the proposal of a coal mill system and a combustion chamber for the boiler PK 4S situated in Košice CHP station with regard to transition to the new fuel. This proposal is focused on the elimination of NOx emissions. The calculation is based on required parameters of the boiler and declared characteristic of the new fuel. The proposal of the coal mill system includes three roller mills working in closed circuit with direct blowing. One of the mills serves as a reserve in case of failure. Dimensions of the dry bottom combustion chamber are proposed considering the applied primary measures to reduce NOx emissions so that the temperature at the end of the furnace would not be higher than maximal allowed temperature 1200 °C.
100

Studie odkanalizování města Rokytnice nad Rokytnou / The study sewerage city Rokytnice nad Rokytnou

Došek, Jan January 2016 (has links)
This work deals with factual building, which is a sewerage in the town of Rokytnice nad Rokytnou. The aim of this work is to propose measures to reduce inflow of redundant water to the local wastewater treatment plant. A method chosen to achieve it is an assesment the most problematic location and making a plan. This work includes among other outputs from the primary exploration and a condition survey, hydrological analysis and designing of two measures. These designs are complemented by the calculation of investment costs and their comparison. Appendix to this work contains drawings and the sheets from condition survey.

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