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Nuclear accidents
Mik, Martin ; Suk, Ladislav (referee) ; Vojáčková, Jitka (advisor)
This thesis is a research dealing with nuclear accidents and disasters in the world and us. The work is divided into several parts. The first part deals with the regulation of nuclear safety in the Czech Republic. The second part describes the international INES scale. The last and largest section deals with the actual accidents and disasters.
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The effect of operating position of the light source on the photometric parameters
Šťastný, Jakub ; Štěpánek, Jaroslav (referee) ; Škoda, Jan (advisor)
The theses discusses how operating position and ambient temperature affect electric light sources. For the purposes of this theses, the analysis of light radiation, the description and the principle of taking measurements of light quantities are included. The work also contains the principle of function, construction and parameters of light sources. For each light source a hypothesized impact of the operating position of the light source and the impact of ambient temperature variation on radiated luminous flux are stated. For selected light sources a measurement of the impact of the operating position on the sources’ photometric parameters was taken. The output measurement data are being compared to the theoretical hypotheses. The conclusion of the thesis describes suggested recommendations for the operation of light sources based on both theoretical and practical parts of the thesis.
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Heating of flat house
Zajíček, Václav ; Vendlová, Lucie (referee) ; Topič, Jan (advisor)
The thesis is composed of three parts - theoretical, computational and a project part. The theoretical part deals with heat sharing through conduction, flow and radiation. The computational part is focused on the overall calculation of the heating system to operate smoothly and reliably. Three gas condensing boilers are designed as a source of heat. The heating of the water is solved as a reservoir. It's source of heat is one gas condensation boiler. The project part contains a technical report and the project documentation on the stage of the implementation dossier.
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Calculation of thermal resistance of finned heatsink
Kyanka, Radim ; Huták, Petr (referee) ; Toman, Marek (advisor)
This bachelor's thesis is focused on the problem with analytical calculations needed to define thermal resistance of finned heat sinks. First it describes how temperature proceeds at different boundary conditions at fin tip. Than it describes different mechanisms of heat transfer, equlation of heat resistance especially of natural and forced convection. To verify the results there is comparison between analytical equlations written in Matlab program and measuring results.
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Engineering solution of photovoltaic power station
Gajdošík, Ivo ; Sobotka, Jiří (referee) ; Míča, Ivan (advisor)
This thesis deals with the usage of solar photovoltaic panel production of electic energy. First part focuses on solar radiation alighting the Earth, respectively the area of Czech republic. Next part covers a development of photovoltaic from the very beggining til nowadays, it describes its spread in the world and the area of Czech republic. Then a reader us introduced to physical principles that work inside solar cells a one single chapter desribes individual parts of photovoltaic power station. Next chapter is dedicated to a model study of photovoltaic power station devided in two alternates- with stacionary placement of panel and placement on trackers, where after a market research, there is a whole technical solution designed and economical and delivery balance is calculated. At the last part there are described main directions of development in the field of usage of solar energy for electric current production.
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Iinfrared thermography and handheld ultrasound doppler during exercise test
Urbanová, Lucia ; Vlk, Daniel (referee) ; Staffa,, Erik (advisor)
Semester project elaborates theoretical part of bachelor thesis, which is going to process results of measurements performed by infrared thermography and Doppler ultrasonography during physical tests on volunteers. The theoretical part contains basics of infrared thermography, where physical quantities, laws and principles are explained. The basic of Doppler ultrasonography are explained as well. In practical part will be statistically analyzed data measured by a thermal imager and Doppler ultrasonography. Study group of people will form students aged from 18 to 25 years. Thermographic and Doppler measurements will be performed before exercise and after exercise. The aim is to find a correlation between processed data.
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Analysis and assessment of risks in the construction of the shielding structures of medical irradiators.
Henzelová, Iveta ; Vymazal, Tomáš (referee) ; Hobst, Leonard (advisor)
The thesis focuses on the analysis and evaluation of the potential risks in the design and implementation of shielding structures against the effects of ionizing radiation. The rocedure of calculation and design optimization, according to the current wording of the Atomic Act and related regulations, is mentioned only marginally. According to DIN EN 31010: 2011 Risk Management - Risk Assessment Technique risk assessment were made by risk analysis. risk analysis. Risk management identified these methods - Analysis of the Causes and Consequences (Ishikawa diagram), Analysis Failure Mode and Effects (FMEA) and the Pareto diagram. These methods are implemented to identify and evaluate the associated risks. Based on the identification and assessment of these risks, appropriate measures are then proposed to reduce their impact.
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Detection of ionize radiation with Geiger-Müller tube
Dědina, Radim ; Macků, Jan (referee) ; Musil, Vladislav (advisor)
This work deals with problems related with detection and measuring of the ionisated radiation. First part of this work is devoted to theoretical problems of detection, particulary to measuring with Geiger Muller tubes. Second part of the work contains proposal of electronical circuit using Geiger Muller tube as well as description of results experimentally acquired while using the detector, which was manufactured according to the proposed scheme. On the basis of those results it appears that proposed apparatus can be used for significant indication range extension.
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The use of optical fibers in potentially explosive atmospheres
Mafka, Martin ; Münster, Petr (referee) ; Filka, Miloslav (advisor)
The main object of semestral’s thesis was show familiarize with using optical networks in explosive areas. The thesis is divided into several basic thematic areas, in which we describe the divison by environmental threats hazards, types of protections optical systems, types of testing and verification of optical systems and ignition hazard assessment. The last chapter illustrates the method and procedure, which will be used in the practical part.
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Temperature Measurement in Technical Diagnostics
Szmek, Tomáš ; Janečka, Jan (referee) ; Vdoleček, František (advisor)
The purpose of this bachelor’s thesis is to familiarize a reader with possibilities of temperature measurement along with constructions and functions of particular measuring instruments and to present their positive and negative aspects. Both basic contact thermometers used in common life and complex systems (thermovision) employed in the most demanding industrial application are described here. The thesis depicts temperature as a diagnostic value according to which the causes of machinery failures are easily detected and subsequent accidents prevented.
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