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Application of thermal camera for analysis of heat
Palička, David ; Pokorný, Jan (referee) ; Lízal, František (advisor)
Within this bachelor degree thesis I have focused on the thermal losses from storage tanks serving as asphalt binders. I have used the theory of non-contact temperature measurements using a thermovision camera. In the first part of this document I deal with the history, theory and some basic principles of non-contact temperature measurements. In the second part I am examining the thermovision camera settings. The third part considers the function of the asphalt mixture production plant itself, as well as the function of storage tanks. In the last part of this thesis I analyze the results of the measurements. The goal of this analysis is to compare results of thermal losses from storage tanks heated with thermal oil, and storage tanks heated with an electrical thermocouple.
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Analysis of possibilities of solution of buckling of a screw-shaped beam
Pokorný, Jan ; Fuis, Vladimír (referee) ; Burša, Jiří (advisor)
Bachelor’s thesis deals with the effect of the pretwist of a column on the increase in buckling load and also focuses on a column with rectangular cross section. This problem is divided into two main parts. The first one is represented by the column with a large thread pitch, the second one by a small thread pitch. The results are obtained by a numerical approach using MATLAB software. The verification is carried out via finite element software. The outcome of this thesis is plotting the ratio of the critical loads of the twisted and prismatic columns against the ratio of the side lengths of the rectangular cross section. The results are shown for both types of considered columns.
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Determination of thermal properties of gloves by means of thermal manikin
Pidrová, Kateřina ; Pokorný, Jan (referee) ; Fišer, Jan (advisor)
This diploma thesis is focused on determination of thermal properties of gloves by means of thermal manikin. The background research with relation to this topic together with derivation of the computational equations used for the following measurement are presented in the first part. The most significant part of this work is suggestion of procedure for measuring the heat resistance of gloves with thermal manikin based on procedure from ČSN EN 511. This methodics was verificated with 5 pairs of gloves together with analysing the uncertainties and testing the repeatability of this measurement. This work also contains the outline for all of the measured pairs with posibilities of their usage in specific situations and surrounding air temperatures. At the end of this work is mentioned brief summary of achieved results.
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Car Cabin Aditional Ventilation System Powered by Photovoltaic Panel
Zdvořilý, Vítek ; Pokorný, Jan (referee) ; Fišer, Jan (advisor)
The aim of the Master thesis is to design and verify the function of the system for the ventilation of parked car in the summer season with the intention to cut down the temperature peak in the cabin of the vehicle. The design of the system consists of the suitable placement of the fans and corresponding inlets and outlets for the flowing of the ventilating air. The fans are powered by a photovoltaic panel. The functionality of the system is verified by the measuring of the temperature drop in the cabin of the car. The ambient conditions for the setting of the intensity of solar radiation and of the ambient temperature have been chosen from the real measurements from TUBO station which is meteorological station of the Faculty of Civil Engineering of BUT Brno.
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The effect of the ventilation settings on amount of fed air and its distribution in the car cabin
Poláček, Filip ; Fojtlín, Miloš (referee) ; Pokorný, Jan (advisor)
This thesis deals with measuring of the distribution and volume of intake air inside vehicle cockpit under varying outdoor conditions and air conditioning settings. Fan characteristic was developed to determine the volume of air taken inside the cockpit. The measuring was made using speed probes in climatic chamber, where different outdoor conditions could be simulated. Following the measurements there is dependence between the air distribution and the outside temperature. The diploma thesis presents source materials to develop a mathematical model of car cabin.
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Frame of stationary hydraulic device
Klezla, Vojtěch ; Pokorný, Jan (referee) ; Pokorný, Přemysl (advisor)
The subject of this thesis is design and strength analysis of stationary hydraulic device. Strength analysis is made by the finite element method. The thesis describes design of used frames, profiles and other components, which are parts of the frame. Frame modification is proposed, based on the results of the strength analysis. These modifications are checked with strength analysis. The thesis includes drawing of weldment. The project has been carried out in cooperation with Bosch Rexroth, spol. s. r. o.
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Tracked chassis of a forwarder
Svoboda, Jan ; Pokorný, Jan (referee) ; Kašpárek, Jaroslav (advisor)
The thesis describes the design of a modular track undercarriage system for a forest utility vehicle called the forest forwarder. In the introduction there is a research study which reviews a variety of design options. The main part of the thesis describes the 3D model created in the Catia V5 programme. The model was subjected to an analysis of dynamic effects by simulated use of the track undercarriage system in the MSC Adams programme. A selected part of the undercarriage was analyzed by the finite element method in the Ansys Workbench programme. Drawing documentation of some of the components is included at the end of the thesis.
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Variation of the Evolutionary Algorithm for Dynamic Problems
Pokorný, Jan ; Bidlo, Michal (referee) ; Schwarz, Josef (advisor)
This study is focused on SOMA evolution algorithm and testing its versions aimed to solve dynamic problems. At the beginning it briefly explains principes of evolution algorithms and then it looks closer on SOMA algorithm. It describes its contemporary troubles for static and dynamic problems. There are also mentioned ways for their correction. It also describes the mostly used strategies -- All To One, All To Random, All To All and All To All Adaptive and shows their advantages and disadvantages. Furthermore another searching strategy is proposed focused on dynamic functions that are changing independently on program. The separate chapter is about project part of the study. There is described implementation and merging of used programs. This part is available on included CD along with results of testing strategies. Tables with average values are also part of the thesis.
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Symbian S60
Pokorný, Jan ; Weiss, Petr (referee) ; Chmelař, Petr (advisor)
Symbian OS with its additions (consisting of a user interface and an application suite) forms a software base for so-called smartphones. S60 platform that is the aim of this thesis is one such example. Although a significant part is dedicated to a theoretical overview covering Symbian and S60, the main goal is to develop a sample application. It enables customizable notifications for incoming short text messages (SMS) according to various criteria. It has been implemented in (Symbian-specific) C++ with the use of C++ orientated development environment (IDE) Carbide.c++ 2.0 and standard development kit (SDK) for S60 3rd Edition (initial release and Feature Pack 1). This application serves as an example to demonstrate some characteristics of the development for this platform as well as the means of an access to the relevant sorts of data and performing the relevant operations.
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