The Master’s thesis deals with thermal network computation of UniGear type switchgear and it compares the calculated results with the real temperature rise test. The thesis describes both electrical and non-electrical characteristics of such a switchgear as well as its application in variol fields of industry. Description of switchgear auxiliary equipment is obvious part of the thesis. Modelling of current carrying track in software environment of Autodesk Inventor and preparing of this current carrying track for thermal network calculation in software environment of ANSYS follows. Main part of this thesis is presentation of thermal analysis results and their comparison with the real temperature rise test.

This diploma thesis deals with the problems of heat transfer on printed circuit boards. The first part consists of a theoretical analysis of the principles of conduction of heat in different environments, comparing the properties of common type’s base materials for PCBs in terms of thermal properties and focuses on heat transfer from the chip. In the following part they are general information about the program ANSYS ® Workbench ™. Next part consists of the basic designs of PCBs and their improving. PCBs thermal properties for different configurations are verified with calculations, simulations and practical measurements. In the last part there are created design recommendations for PCBs design based on the comparison of the results of initial proposals and proposals to improvements.

This project focus to desing an on-chip oscillator in function as a clock generator. Frequency stability of the oscillator is affected by supply voltage, temperature and process variations. The aim is to propose a clock generator with sufficient frequency stability, low power consumption and a small chip area. This work deals with the types of oscillators and their basic building blocks suitable for our application. It also deals with the study and design options of temperature and process compensation circuit generating the current control, which provides the frequency stabilization of the output signal.

This document deals with issues of testing semiconductor inertial sensors like gyroscopes and accelerometers, but also other sensors like magnetometers, inclinometers and others for aviation navigation purposes where strict requirements cover every system. The goal of this thesis is to create modular test platform for testing wide variety of sensors in different combinations under variable circumstances. The development covers mechanical design, electrical design – hardware and also control algorithm – software.

This master´s thesis is focused on the use of primary raw materials (clays) in the brick manufacturing. These soils differ mainly CaO contect and it most often in the form of calcite. Diversity of soils is manifested primarily in the mineralogical composition after firing and the existence of anorthite in the calcium clays. In the practical part I am trying to define the optimal type of soil suitable for the production of masonry units.

The work deals with the examination of repression and segregation in asphalt mixtures. The theoretical part is monitoring the current situation about the problem of segregation, which mainly refers to the practical adjustments during laying „risking“ asphalt mixtures on the formation of segregated places in the shelter layers of roads. The practical parts of the thesis are summarised measurements on six samples of the most commonly used asphalt mixtures to determine the segregation depending on the selected parameters. The work is describing and valorising a test for determining segregation according to ČSN EN 12697-15.

The master’s thesis analyzes different methods of comparing structures in terms of thermal stability in summer. An important part is the evaluation of the results accuracy and computational models of these methods. In conclusion it describes the influence of building envelope on the thermal stability of the internal environment in the summer, which are important design parameters and how to optimize the design of wall.

Master’s thesis, „Optimization of hanger design in petrochemical industry heaters”, describes a procedure and means, leading to better hanger design in various cases. The thesis describes several problems which are necessary to be solved in hanger design. Technical expertise is executed on hangers of various designs. The procedure of optimization is shown on one chosen hanger design.

The main aim of this master’s thesis is to design the drivetrain of four-cylinder gasoline internal combustion engine with torsional vibration rubber dumper. For the basic parameters of the engine are designed two optional crankshafts. Crankshaft with eight counterweights and crankshaft with four counterweights. The thesis also includes modal analysis of the crankshaft using FEM, and design of the main dimensions of the dumper. The following part describes the calculation of force torsional vibration and safety factor solution of crankshaft fatigue using FEM. The final calculation is of the temperature field in the rubber dumper in selected operating modes.

This master’s thesis is focused on the description and processing of the cell method, which is generally recommended for prediction of fluids temperature profiles in heat exchanger. In the thesis the basic equations for calculating heat transfer are presented and is also described the current situation in the field of computational prediction of fluids temperature profiles in heat exchangers. The cell method is solved by using the software Maple and is applied to the specific case of industrial heat exchangers. The results obtained by the cell method are compared with the results obtained by educational version of software HTRI Xchanger Suite. By this comparison explicitness of the cell method is assessed.