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Cleaving machines
Nykodým, Jiří ; Jonák, Martin (referee) ; Kašpárek, Jaroslav (advisor)
This bachelor thesis deals with the study currently being produced by major semi-automatic and automatic cutting machines. The main aim of this work is to compare the individual properties of machines that appear on the market today. Especially comparing their individual parameters, characteristic for each manufacturer and each type of splitting machines, such as cutting speed, mobility, durability, cutting, etc..
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The influence of operating parameters and construction parameters of the low-NOx burner on characteristic parameters of combustion processes
Nykodým, Jiří ; Hudák, Igor (referee) ; Bělohradský, Petr (advisor)
The main aim of the work was the investigation of the effect of operational parameters of the combustion process (combustion air excess, primary fuel ratio) and burner constructional parameters (the pitch angle of secondary nozzles, tangential orientation of secondary nozzles towards the axis of the burner) on the formation of NOx and CO, flue gas temperature, the shape, dimensions and stability of the flame, in-flame temperatures in the horizontal symmetry plane of the combustion chamber and the amount of heat extracted from the hot combustion gases in the combustion chamber’s shell. Experimental activities were carried out in the laboratory of the Institute of Process and Environmental Engineering, which is focused on burners testing. The combustion tests were performed with the experimental low-NOx type burner, namely the two-gas-staged burner. Mathematical model developed based on the experimental data describes the dependency of NOx on the operating parameters of the combustion process and burner constructional parameters. The model shows that increasing air excess and increasing angle of tangential orientation of the secondary nozzles reduce the formation of NOx. The temperature peaks in the horizontal symmetry plane of the combustion chamber decreases with increasing combustion air excess. The thermal load to the combustion chamber’s wall along the length of the flame was evaluated for selected settings. It was validated that the thermal efficiency of is reduced when higher air excess is used.
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Low Energy Bluetooth Localization
Šlígl, Jan ; Nykodým, Jiří (referee) ; Götthans, Tomáš (advisor)
This diploma thesis is focused on design of localization device using Bluetooth 5.2 with low power consumption. Localization is performed using created devices forming a beacons and designed application for mobile phone. Also design of multiple types of antennas with different directional radiation pattern, gain and size. Design is mostly focusing on low power consumption and compact independent device.
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Design of adaptive wireless video and data transmission
Lorenc, Tomáš ; Nykodým, Jiří (referee) ; Götthans, Tomáš (advisor)
Cílem této diplomové práce je sestavit zařízení, které bude umět vytvořit bezdrátový přenos real time videa a posílat video do počítače, kde bude zobrazeno. Zařízení je postavené na jednotce NVIDIA Jetson Nano a vysílání videa probíhá bezdrátově pomocí WiFi rozhraní. V teoretické části je popsána problematika přenosu videa a komprese videa. Používají se kodeky h264, h265 a VP8. Byl proveden subjektivní test pro nalezení minimální akceptovatelné hodnoty kvality videa. Bylo provedeno měření, které odhalí nejlepší kodek pro real time přenos videa. Měření probíhalo i v reálných podmínkách. V závěru jsou komentovány výsledky měření a výběr nejlepšího kodeku pro real time video přenos.
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Low Energy Bluetooth Localization
Šlígl, Jan ; Nykodým, Jiří (referee) ; Götthans, Tomáš (advisor)
This diploma thesis is focused on design of localization device using Bluetooth 5.2 with low power consumption. Localization is performed using created devices forming a beacons and designed application for mobile phone. Also design of multiple types of antennas with different directional radiation pattern, gain and size. Design is mostly focusing on low power consumption and compact independent device.
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The influence of operating parameters and construction parameters of the low-NOx burner on characteristic parameters of combustion processes
Nykodým, Jiří ; Hudák, Igor (referee) ; Bělohradský, Petr (advisor)
The main aim of the work was the investigation of the effect of operational parameters of the combustion process (combustion air excess, primary fuel ratio) and burner constructional parameters (the pitch angle of secondary nozzles, tangential orientation of secondary nozzles towards the axis of the burner) on the formation of NOx and CO, flue gas temperature, the shape, dimensions and stability of the flame, in-flame temperatures in the horizontal symmetry plane of the combustion chamber and the amount of heat extracted from the hot combustion gases in the combustion chamber’s shell. Experimental activities were carried out in the laboratory of the Institute of Process and Environmental Engineering, which is focused on burners testing. The combustion tests were performed with the experimental low-NOx type burner, namely the two-gas-staged burner. Mathematical model developed based on the experimental data describes the dependency of NOx on the operating parameters of the combustion process and burner constructional parameters. The model shows that increasing air excess and increasing angle of tangential orientation of the secondary nozzles reduce the formation of NOx. The temperature peaks in the horizontal symmetry plane of the combustion chamber decreases with increasing combustion air excess. The thermal load to the combustion chamber’s wall along the length of the flame was evaluated for selected settings. It was validated that the thermal efficiency of is reduced when higher air excess is used.
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Cleaving machines
Nykodým, Jiří ; Jonák, Martin (referee) ; Kašpárek, Jaroslav (advisor)
This bachelor thesis deals with the study currently being produced by major semi-automatic and automatic cutting machines. The main aim of this work is to compare the individual properties of machines that appear on the market today. Especially comparing their individual parameters, characteristic for each manufacturer and each type of splitting machines, such as cutting speed, mobility, durability, cutting, etc..
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