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Design of a filter unit for waste gas cleaning
Volánka, Lukáš ; Wegschmied, Roman (referee) ; Jecha, David (advisor)
This bachelor's thesis focuses on the design of the filtration unit and on particulate matter, or PM, which is still a significant contributor to air pollution. The first chapter describes the basic properties of these pollutants and their influence on the design of the separator. The next chapter briefly discusses the current legislation in the Czech Republic dealing with emission and air pollution limits. In the third chapter, which is also the last of the theoretical part of the thesis, the individual methods of removal of PMs are presented and explained. The practical part follows, mainly devoted to the design of the filtration unit for the given case, which ends with the measurement of emissions and a brief evaluation of the results.
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Bicycle suspension test stations
Volánka, Lukáš ; Růžička, Bronislav (referee) ; Mazůrek, Ivan (advisor)
This work deals with the design of a bicycle suspension testing station. Currently, new suspension technologies are still being developed, especially for mountain bikes, which are intended for very rough terrain. For this development of new technologies, it is necessary to have a suitable station that enables experimental verification of driving characteristics, ideally in laboratory conditions. The key features that can be evaluated in a bike are riding comfort and grip. The designed station uses a cylindrical road simulator placed under the tested suspension (wheel). Speed bumps are placed on the cylinder of the simulator, which excite vibrations in the bike when passed over, which simulates driving on a bumpy road. At the station, it is possible to evaluate the properties of the front and rear suspension, while the bicycle is always clamped to the station by the axis of the untested suspension. During the tests, the riders weight is replaced by additional weights placed on a rack that connects the seat and head tube of the bike. The additional weights can be moved to imitate different positions of the cyclist while riding. A virtual dynamic model was created for the test station, which makes the experiments much more efficient. The simulation model was designed and tested in MSC Adams software. The test station together with the virtual model forms a simple tool that enables quick and efficient testing of the quality of bicycle suspension.
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Design of a filter unit for waste gas cleaning
Volánka, Lukáš ; Wegschmied, Roman (referee) ; Jecha, David (advisor)
This bachelor's thesis focuses on the design of the filtration unit and on particulate matter, or PM, which is still a significant contributor to air pollution. The first chapter describes the basic properties of these pollutants and their influence on the design of the separator. The next chapter briefly discusses the current legislation in the Czech Republic dealing with emission and air pollution limits. In the third chapter, which is also the last of the theoretical part of the thesis, the individual methods of removal of PMs are presented and explained. The practical part follows, mainly devoted to the design of the filtration unit for the given case, which ends with the measurement of emissions and a brief evaluation of the results.
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