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Prediction and experimental evaluation of the performance of a Z-type distribution system
Polcsák, Jakub ; Rebej, Miroslav (oponent) ; Babička Fialová, Dominika (vedoucí práce)
The purpose of this work was to find a suitable calculation method for predicting the function of distribution systems in the design calculations of process and energy equipment. In particular, it aimed at describing the distribution of the working fluid flow in a dividing distribution system and a combined Z-type distribution system (with nozzles located parallel to opposite sides of the system). Analytical and CFD calculation tools validated by data from the performed physical experiments were used in this work. In the CFD method, the prediction of the dividing flow was performed for full 3D and simplified 2D geometry of Z-type distribution systems. The carried-out analyzes show that the prediction of the distribution system function obtained by both analytical and numerical approaches is accurate enough. The relative difference between the experimental and computational relative standard deviations did not exceed 9 %. The main disadvantage of 3D CFD analysis, especially concerning the purpose of the intended application, i.e., the inclusion of a distribution model in a complex modeling system for the initial design of heat transfer equipment, was the extremely long computational time. Analytical models appear to be a reasonable compromise between the accuracy of the flow distribution prediction and the computational times.
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Wind power plants principle
Polcsák, Jakub ; Fialová, Simona (oponent) ; Pochylý, František (vedoucí práce)
The aim of the bachelor thesis is to elaborate the most extensive search, which deals with the description and function of existing wind turbines / pumps and their use in connection with water tanks. Wind turbines are divided by size. I have dealt with their principle of functioning, economy and properties. Next, I devoted myself to the future of wind farms. I have described their principles of functioning and properties. The last topic was dedicated to water tanks. In the first part I described their placement against the consumer, construction and use. The second part deals with their connection with wind turbines / pumps and their efficient use.
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Prediction and experimental evaluation of the performance of a Z-type distribution system
Polcsák, Jakub ; Rebej, Miroslav (oponent) ; Babička Fialová, Dominika (vedoucí práce)
The purpose of this work was to find a suitable calculation method for predicting the function of distribution systems in the design calculations of process and energy equipment. In particular, it aimed at describing the distribution of the working fluid flow in a dividing distribution system and a combined Z-type distribution system (with nozzles located parallel to opposite sides of the system). Analytical and CFD calculation tools validated by data from the performed physical experiments were used in this work. In the CFD method, the prediction of the dividing flow was performed for full 3D and simplified 2D geometry of Z-type distribution systems. The carried-out analyzes show that the prediction of the distribution system function obtained by both analytical and numerical approaches is accurate enough. The relative difference between the experimental and computational relative standard deviations did not exceed 9 %. The main disadvantage of 3D CFD analysis, especially concerning the purpose of the intended application, i.e., the inclusion of a distribution model in a complex modeling system for the initial design of heat transfer equipment, was the extremely long computational time. Analytical models appear to be a reasonable compromise between the accuracy of the flow distribution prediction and the computational times.
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Wind power plants principle
Polcsák, Jakub ; Fialová, Simona (oponent) ; Pochylý, František (vedoucí práce)
The aim of the bachelor thesis is to elaborate the most extensive search, which deals with the description and function of existing wind turbines / pumps and their use in connection with water tanks. Wind turbines are divided by size. I have dealt with their principle of functioning, economy and properties. Next, I devoted myself to the future of wind farms. I have described their principles of functioning and properties. The last topic was dedicated to water tanks. In the first part I described their placement against the consumer, construction and use. The second part deals with their connection with wind turbines / pumps and their efficient use.
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