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Elimination of nanoplastics by cavitation and advanced oxidation processes
Kluknavská, Júlia ; Burda, Radim (referee) ; Rudolf, Pavel (advisor)
Táto práca sa zaoberá znečistením životného prostredia mikro a nanoplastami a ich možnou likvidáciou. Práca pozostáva z rešeršnej a experimentálnej časti. V rámci rešerše je opísaná problematika mikro a nanoplatov z hľadiska ich vzniku, disperzie do životného prostredia a živých organizmov. V závere rešeršnej časti sú opísané súčasné možnosti eliminácie mikro a nanoplastov pri čistení odpadových vôd. Súčasné riešenia sú založené prevažne na filtrácii, ktorá však zo svojej podstaty nemôže byť absolútna. Bol vyslovený predpoklad, že pomocou zariadenia CaviPlasma by bolo možné eliminovať mikro a nanoplasty z odpadových vôd. Cieľom práce bolo experimentálne overiť tento predpoklad. Skúšobnou vzorkou bola suspenzia vody a polyamidových častíc, ktorá bola následne vystavená pôsobeniu kavitácie a plazmového výboja. Pri experimente nedošlo ku zničeniu častíc a ani ich k viditeľnému porušeniu. Ukázalo sa však, že plazmový výboj môže iniciovať zhlukovanie sa častíc až do takej miery, že sú pozorovateľné kontinuálne štruktúry mikroplastov. Tento jav by mohol byť potenciálne prospešný pri zachytávaní mikročastíc filtráciou.
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Adapter for pressing of sport shockabsorber
Drozd, David ; Jeniš, Filip (referee) ; Mazůrek, Ivan (advisor)
This bachelor thesis is aimed at developing an adapter intended for filling mono-tube shock absorbers with gas. The first part deals with fundamentals and methods of gas charging of shock absorbers. The second part is aimed at designing the adapter based on findings from the first part. The third part includes detailed description of the final design and control calculations. Thesis outcomes include complete technical documentation of filling adapter of custom design and a comprehensive research report concerning gas charging of shock absorbers.
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Design of Ultrasonic Cleaner
Danková, Magdalena ; Rubínová, Dana (referee) ; Sládek, Josef (advisor)
The bachelor thesis deals with the design of a home ultrasonic cleaner. The aim of the work is to design emphasizing compactness, convenient portability with easy pouring of water. The work is based on the identification of characteristic elements of current products and connect the function with the form.
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Transition of cavitating flow to supercavitation
Chovanec, Radomír ; Fic, Miloslav (referee) ; Rudolf, Pavel (advisor)
Bachelor thesis consists of two parts. The first part is dedicated to research. It deals with clarifying the basic concepts of cavitation and current knowledge in the field of supercavitation. The second, experimental part is devoted to flow in Venturi nozzle in the transition from developed cavitation to supercavitation. The aim was to examine the hysteresis that occurs with a change of transition direction. To clarify the phenomenon were compared static and dynamic characteristics acquired from the measurement and visualization on the hydraulic circuit with cavitation jet.
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Machine learning in water machine diagnostics
Šebek, Denis ; Rudolf, Pavel (referee) ; Habán, Vladimír (advisor)
The thesis focuses on utilizing high-frequency measurement methods for measuring pressure, sound, and acoustic emission, and their application in machine learning for detecting operational states in water machinery. This thesis aims to propose a machine-learning approach capable of evaluating cavitation, flow conditions, and faults based on the collected data. The first part of the thesis discusses the theoretical introduction to selected high-frequency measurement methods and provides a basic introduction to machine learning. The second part describes the experimental setup, including data preprocessing and the implementation of a neural network. In the conclusion, the individual results are evaluated and compared.
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Elimination of nanoplastics by cavitation and advanced oxidation processes
Kluknavská, Júlia ; Burda, Radim (referee) ; Rudolf, Pavel (advisor)
Táto práca sa zaoberá znečistením životného prostredia mikro a nanoplastami a ich možnou likvidáciou. Práca pozostáva z rešeršnej a experimentálnej časti. V rámci rešerše je opísaná problematika mikro a nanoplatov z hľadiska ich vzniku, disperzie do životného prostredia a živých organizmov. V závere rešeršnej časti sú opísané súčasné možnosti eliminácie mikro a nanoplastov pri čistení odpadových vôd. Súčasné riešenia sú založené prevažne na filtrácii, ktorá však zo svojej podstaty nemôže byť absolútna. Bol vyslovený predpoklad, že pomocou zariadenia CaviPlasma by bolo možné eliminovať mikro a nanoplasty z odpadových vôd. Cieľom práce bolo experimentálne overiť tento predpoklad. Skúšobnou vzorkou bola suspenzia vody a polyamidových častíc, ktorá bola následne vystavená pôsobeniu kavitácie a plazmového výboja. Pri experimente nedošlo ku zničeniu častíc a ani ich k viditeľnému porušeniu. Ukázalo sa však, že plazmový výboj môže iniciovať zhlukovanie sa častíc až do takej miery, že sú pozorovateľné kontinuálne štruktúry mikroplastov. Tento jav by mohol byť potenciálne prospešný pri zachytávaní mikročastíc filtráciou.
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|
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Design of Ultrasonic Cleaner
Danková, Magdalena ; Rubínová, Dana (referee) ; Sládek, Josef (advisor)
The bachelor thesis deals with the design of a home ultrasonic cleaner. The aim of the work is to design emphasizing compactness, convenient portability with easy pouring of water. The work is based on the identification of characteristic elements of current products and connect the function with the form.
|
|
|
Adapter for pressing of sport shockabsorber
Drozd, David ; Jeniš, Filip (referee) ; Mazůrek, Ivan (advisor)
This bachelor thesis is aimed at developing an adapter intended for filling mono-tube shock absorbers with gas. The first part deals with fundamentals and methods of gas charging of shock absorbers. The second part is aimed at designing the adapter based on findings from the first part. The third part includes detailed description of the final design and control calculations. Thesis outcomes include complete technical documentation of filling adapter of custom design and a comprehensive research report concerning gas charging of shock absorbers.
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Transition of cavitating flow to supercavitation
Chovanec, Radomír ; Fic, Miloslav (referee) ; Rudolf, Pavel (advisor)
Bachelor thesis consists of two parts. The first part is dedicated to research. It deals with clarifying the basic concepts of cavitation and current knowledge in the field of supercavitation. The second, experimental part is devoted to flow in Venturi nozzle in the transition from developed cavitation to supercavitation. The aim was to examine the hysteresis that occurs with a change of transition direction. To clarify the phenomenon were compared static and dynamic characteristics acquired from the measurement and visualization on the hydraulic circuit with cavitation jet.
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