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Gantry crane
Kriegler, Boleslav ; Škopán, Miroslav (referee) ; Pokorný, Přemysl (advisor)
The work is focusing on design and actual construction of gantry crane, which is constructed for manipulation with ships in ports. The work describes calculation of powers that are put on the crane or describes control of its parts. As an output of the work is considered drawing documentation.
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Capacity meter for Li-Ion and NiMH accumulators
Pinďák, Lukáš ; Cipín, Radoslav (referee) ; Huták, Petr (advisor)
The goal of this bachelor thesis is primarily theoretical analysis of battery problems, analysis tester capacity of Li-ion and NiMH accumulators and its subsequent construction. The work consists of three main. The first part deals with the electrochemical current sources and their division, a brief description of their charging and final comparison commonly most used batteries. The second part of the thesis is already focused on the practical design of the capacity meter. In this section is explained the issue of measuring voltage, current and temperature of the battery and determination of their capacity. The last part describes the device software. The proposed devices allow measurement capacity Li-ion and NiMH cells at three different load modes and can be recharged after discharge.
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Monitoring of temperature influence on properties of lead-acid accumulators
Musil, Petr ; Křivík, Petr (referee) ; Bača, Petr (advisor)
This thesis deals with lead-acid battery, its parameters and temperature behaviour of this electro-chemical source of power. In the theory section, types of batteries are presented, followed by their primary parameters and electro-chemical reactions, which take part in battery cells. This section also contains information about charging stages, detailed description of each battery part, used materials, construction of the battery and degradation processes caused by battery operation. The practictal section of this thesis offers a measurement scheme for automated measuring workstation. Furthermore, the practical section presents results of measurements on parameters of chosen lead-acid battery types, it also contains long-term deep battery cycling and measurements under elevated temperatures. Detailed comparison of measurements results and datasheet values is included. Conclusion sums up parameters of chosen lead-acid battery types and their feasibility for further usage in power backuping.
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Design of optimal utilization of company's data capacities
Odehnal, Tomáš ; Hrbáček, Miroslav (referee) ; Ondrák, Viktor (advisor)
The diploma thesis deals with the problem of storage capacities of server discs in the allowance organization of Brno City Museum. The organization has long-lasting troubles with insufficient capacity of these discs. The aim of this thesis is to analyse the current state and to propose a suitable solution on the basis of the results of this analysis. Further, the suggested measures should be applied as well.
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Electrotechnic firm logistic
Dvořáková, Ivona ; Vaněk, Jiří (referee) ; Špinka, Jiří (advisor)
The thesis paies logistics and this firstly from aspects production of the process in theoretic introduction. In the next part of thesis interprets technology projection, capacity calculations and planning. The theory is ending characterization monitored company. The practical part work forms analysis input data prejudicing calculations capacity utilization company and characterization project calculation. The capacitive calculations utilization company for traced period are enclosed at the close this thesis.
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Impact of technological parameters on electrochemical properties of negative electrode in lithium-ion battery
Živčic, Samuel ; Máca, Josef (referee) ; Libich, Jiří (advisor)
This bachelor thesis deals with the issue of li-ion batteries and consists of two main parts. The first part of the thesis deals with a theory. It describes the functionality of electrochemical cells, especially li-ion cells. Operational principle of the cell is discussed, with the main focus given on negative electrode (anode) and the material it consists of, the natural graphite, mainly his electrochemical properties. Last chapter of theory describes expected impact of technological parameters on electrochemical properties of negative electrode. The second part of the thesis is the practical part. First, it describes procedure of making electrodes in laboratory and afterwards it provides an explanation of used measuring methods, steps taken during the measurement, and the results of the measurements. At the end of the thesis, the influence of pressure and layer thickness on electrochemical properties of natural graphite and on capacitive and current characteristics of negative electrode is evaluated.
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Safety Assesment of the Těšany Dam during Floods
Desatová, Martina ; Holomek, Petr (referee) ; Jandora, Jan (advisor)
The aim of this bachelor thesis is safety assessment of the Těšany dam in the conversion of control floods. The content of the work is a description and summary of basic data on the water structure the documents and the resulting values, including descriptions of hydraulic calculations. The requirements ČSN 75 2935 were a basis for this thesis. The result of thesis is evaluation of current condition of dam and associated facility.
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Editing roundabout Hviezdoslavova x Bedrichovicka
Klusková, Jana ; Pančík, Vladimír (referee) ; Smělý, Martin (advisor)
The aim of this Bachelor's thesis is solution of the problem of the roundabout that connects road II/430 Hviezdoslavova and the road III/715283 Bedřichovická in city district Brno Slatina. It is about single lane roundabout. The crossroad is situated on the edge of the city and the main problem is satisfactory capacity of it. This problem is linked to the movement of the vehicles leaving the city in the afternoon hours and arriving the city in the morning hours and also with transit transport across the roundabout. The aim is to design new geometry of the roundabout to increase its capacity and also increase the fluidity and efficiency of the passage of vehicles through the intersection with emphasis on the safety of vehicles and pedestrians . The work also includes solutions for pedestrians through the intersection and the draft modifications sidewalks, barrier adaptations of pedestrian crosswalks , points for crossing and adjust the bus stops.
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Exploring the influence of pressure on the life of lead acid batteries for hybrid electric vehicles
Pospíchal, Martin ; Tošer, Pavel (referee) ; Bača, Petr (advisor)
The lead-acid batteries used in hybrid electronic vehicles HEV operate in high-rate mode in a state of partial charge PSoC. It occurs when the degradation mechanisms related to irreversible sulphation and negative electrodes are a limiting factor in the life of lead-acid batteries. The electrode system was applied to experimental pressure cells of different sizes. Exp. cells were subjected to measurement and evaluation of potential negative electrode, a negative active mass resistance, contact resistance of transition collector - the active mass with the evaluation and measurement of pressure fluctuations within four PSoC runs.
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