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Test bench for analysis of energy recovery in experimental vehicle
Indruch, Jiří ; Čermák, Jan (referee) ; Nevrlý, Josef (advisor)
The diploma thesis deals with design of an experimental test bench for recovery energy simulation at machines with hydrostatic energy transmission. This work describes choice of connection and selection of hydrostatic and other components. A first part of the thesis deals with calculation and design of the flywheel whose is its rotational kinetic energy corresponds in a certain scale to translational kinetic energy of the experimental vehicle. The thesis outlines the efficiency of transformation of rotational kinetic energy to pressure energy its accumulation and subsequent conversion back to rotational kinetic energy. Precise determination of the effectiveness of hydrostatic recovery is one of the objectives of experiments that will be implemented at the test bench. The task of the measurement and physical-technical analysis to be conducted at the manufactured test bench is primarily to obtain data at for the precise control of the hydrostatic energy recovery system to maximize its efficiency.
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Design of aircraft power unit
Poledno, Martin ; Maňas, Pavel (referee) ; Nevrlý, Josef (advisor)
This diploma thesis deals with basic design and calculation of an aircraft power unit (APU). For desired shaft power the thermal cycle is calculated. Basic dimensions of compressor, turbine and exhaust system are calculated as well as thermodynamic parameters of air and hot gases along the motor. Corresponding compressor map, turbine map and characteristics of the exhaust system are designed. Based on these characteristics, an effective shaft power is being calculated in various off-design conditions. Dependency of the shaft power vs. altitude is also presented. All the calculations are made in MATLAB. Finally, simplified motor cross-section is created.
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Methodological guide and digitization of gear pump
Ševčík, Ondřej ; Nevrlý, Josef (referee) ; Nečas, David (advisor)
The aim of this bachelor thesis is to provide a methodological quide of U10 type gear pump. In the first part of the thesis, analysis of individual pump components including its main parameters is presented. The next part is focused on the identification of the defect suggesting the instructions for the reparation. All the operations such as dismantling, inspection, reparation, and assembly are described in a detail in a form of the technological processes. After the reparation, an operating test was conducted to verify the functionality of the pump. In addition, all the components of the pump were digitized by using SolidWorks CAD system. The last chapter provides FEM analysis of the cogwheels contact. For this purpose, computational system ANSYS Workbench was used.
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Optimization of hydraulic system for milling machining center
Smíšek, Tomáš ; Ranuša, Matúš (referee) ; Nevrlý, Josef (advisor)
The bachelor thesis is focused on the design of optimized solution of the hydraulic system for milling machining centre. The main points of this work are to assess the current condition, design optimization solutions, construction calculations, final optimized solution and summary of the optimization. The contracting company is HYTEK Ltd. dealing with construction of hydraulic equipments.
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Pumps of artificial kidney
Březina, Marek ; Ranuša, Matúš (referee) ; Nevrlý, Josef (advisor)
This bachelor thesis deals with issue of pumps of artificial kidney, especially with blood pumps of artificial kidney. It compares available technical, economic and hemolysing properties from different manufacturers. It concisely informs about the history of pumps of artificial kidney.
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Testing of strength of extracorporeal blood circulation connections
Pospíšil, Luděk ; Friedel, Daniel (referee) ; Nevrlý, Josef (advisor)
This thesis deals with testing the connection strength between the cannula and tubing for extracorporeal blood circulation. The first part gives information about tubing, cannulas and instruments in extracorporeal blood circuit. The following is the issue of connection strength, design and assembly of measuring stand including a measurement of the required parameters for different conditions. The second part deals with the evaluation of the measured data. The outcome of this work is measuring breakaway strength on pressure and temperature of the flowing medium and the size of the tensile forces in the axis of the tube over time, analysis of results and comparison with materials from supplier cannulas and tubing.
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Design and manufacturing of patented bowling ball equipped by submerging grasp
Plachý, Ladislav ; Nohál, Libor (referee) ; Nevrlý, Josef (advisor)
The purpose of this bachelor thesis is design of mechanical elaboration and manufacturing of patented bowling ball equipped by submerging grasp. The introduction is about given task and it shows a possible solution. In the next part of thesis are described different mechanisms which can be used inside of the ball. Third part is about design of every single component, choice of its material and about other properties which are necessary for the correct function of suitable system.
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Optimization of hydraulic system for milling machining center
Smíšek, Tomáš ; Horňák, Samuel (referee) ; Nevrlý, Josef (advisor)
The bachelor thesis is focused on the design of optimized solution of the hydraulic system for milling machining centre. The main points of this work are to assess the current condition, design optimization solutions, construction calculations, final optimized solution and summary of the optimization. The contracting company is HYTEK Ltd. dealing with construction of hydraulic equipments.
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