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Biomass for power plants in the off-grid operation
Roule, Jaroslav ; Radil, Lukáš (referee) ; Baxant, Petr (advisor)
The thesis discusses the use of biomass for electricity island operation. The first chapter explains the concept of biomass and its distribution. It also shows the potential and availability of biomass. The second chapter describes the transformation of biomass into a suitable fuel form. The third to fifth chapter describes the conversion of biomass as a fuel into electrical energy through combustion, Stirling and steam engine. In these chapters there are brought the following parameters and prices of these motors and single-phase and three-phase alternators that can be connected to these engines. Other chapters describe the production of electricity in line with consumption, where the cost per hour to run engines for the various types of fuel and price of the electricity produced in kilowatt hours is calculated. In the last chapter of the thesis there is described the possibility of accumulation of electrical energy.
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The requirements of the airworthiness of aircraft
Pauliny, Jan ; Pejchar, Jan (referee) ; Chlebek, Jiří (advisor)
The focus of this study is to investigate the requirements and procedures for obtaining and maintaining a certificate of airworthiness of aircraft and aeronautical products within the scope of civil aviation. The requirements investigated include the standards regarding airworthiness requirements for large airplanes, helicopters, small airplanes, engines, and propellers. The procedures for certification and continuing airworthiness throughout the design, production and operating life of an aircraft are explained.
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Conception of ATV (all-terrain vehicles)
Dosedla, Milan ; Vančura, Jan (referee) ; Porteš, Petr (advisor)
This thesis is review article of the current design and construction setup of ATVs. In the individual chapters are analyzed function of structural units and their advantages and disadvantages for the application. Much attention is paid to the design and construction of the brakes and axles. Work based on the analysis 30 models of ATVs from different manufacturers. This thesis reports the specifications of selected models. In conclusion we discuss the appropriateness of design solutions for different types of ATVs such as utility or sport models.
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Recent Trucks Technical Solutions
Slavíček, Jakub ; Svída, David (referee) ; Ramík, Pavel (advisor)
Bachelor’s thesis is about technical solving of goods carriers. There is defined kinds of trucks by purposes of using. There are described carriages, gear units, motors, cabins, safety factor, electrical systems. There is vision of future. Knowledge of professional driver are used.
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Reologický profil motorového oleje používaného ve čtyřdobých pístových motorech
Kumbár, Vojtěch
This dissertation deals with rheological and flow behavior of engine oil used in four-stroke piston engines. Experiments were performed using some selected oils used in motorcycles, cars and agricultural machinery. Samples of used oil were collected and analyzed. The following parameters were measured: time-dependence of dynamic viscosity and shear stress of engine oils, the dependence of shear stress on the shear rate of engine oil, temperature dependence of engine oil density and temperature dependence of dynamic and kinematic viscosity of engine oil. To evaluate the degree of degradation of analyzed engine oils, the measured results were compared with data concerning new, (non-used) motor oil of the same trademark and specification. Thereafter, mathematical models were elaborated using the results obtained in individual measurements. Correlation coefficients and coefficients of determination existing between measured and calculated values were calculated and evaluated. Elaborated mathematical models can be used when predicting the behavior of engine oils and liquids with similar rheological characteristics.
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Motor abilities of childern at the age from six to seven years in České Budějovice\\
KUNCOVÁ, Pavla
The aim of my diplomy work is to find out the level of motory skills 6-7 year old children. Research work ran in the sekond {--} class at Primery schoul Kubatova in České Budějovice. General set spaned 42 pupils. My task was to compare theirs efficient and co {--} ordinative abilities with supposed level, to deliminate theirs mutual relations, to compare boys and girls and sports and non-sports class.
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