National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Steam turbine to drive the feed pump
Pavliska, Vojtěch ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
This diploma thesis performs a calculation of a steam turbine to drive a feed pump. The research part deals with the basic classification of steam turbines focusing on mechanical drive steam turbines. The second part of the thesis is a controlled extraction pressure optimization for achieving the maximum possible thermic efficiency of the cycle. The last part of the thesis shows a detailed thermodynamic calculation of the mechanical drive turbine along with the basic geometric parameters of the flow canal.
Hydrogen technology as a clean energy solution
Pavliska, Vojtěch ; Šnajdárek, Ladislav (referee) ; Poláčik, Ján (advisor)
Gradual transition towards renewable sources of energy should be one of the main concerns of today’s society. This does not only concern the production of electricity but also automotive industry. Transportation is the main cause of air pollution in bigger cities and is also responsible for a solid percentage of green-house gases production. For these reasons, it is key to seek more sustainable and eco-friendly ways of motorized vehicles propulsion. Artificially produced hydrogen is one of the more promising alternatives to fossil fuels. This thesis describes the application of fuel cell technology for city busses. It presents some existing examples of hydrogen busses and their comparison with common means of mass transportation.
Programmable resistance decade
Pavliska, Vojtěch ; Sitta, Michal (referee) ; Havlíková, Marie (advisor)
Subject of this work is description of programmable resistance decade M632 from company Meatest. Description will include construction, functionality and practical usage. Principles are described on basis of real resistor and it‘s connection in electrical circuit. Next part is focused on most important components of M632 followed by part describing functional units and control of resistance decade. Last part focuses on measurement design of resistor and its dependence on frequency with Caliber programme.

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