|
|
Kidsgarden
Kuttelwascherová, Kristína ; Čížek, Roman (referee) ; Daněk, Lukáš (advisor)
This diploma thesis is a project of a two-storey building of a Kindergarten. The building will be used for educating preschool children. On the ground floor, there are two base classrooms, one in each wing of the building. Each classroom has several zones (relaxing, playing, creating). Each classroom also has its own dressing room, washroom + toilets. On the ground floor, we can also find facilities for teachers and the principal office. Since finished food will be delivered, the building only contains a food preparation facility + dry storage. The second floor is accessible either by stairs or by elevator. On the second floor, there is another base classroom with its own dressing room and a washroom with toilet. Food is transported from the first floor by elevator, which is not designed for transporting people. On the second floor, there is also the teacher´s base + large social hall for occasional events. The kindergarten building has an atypical layout. The building is partly roofed by a flat roof and partly by a gabled roof. The project was processed using the computer program AutoCAD. During processing, emphasis was placed on the correct layout, architectural design and safe use of the building.
|
|
|
Variant production technology of a fan impeller
Macháček, Marek ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The thesis considers a change in the manufacturing technology of a fan impeller from welding to 3D printing. The wish of the manufacturer was to investigate if such a change is possible and financially profitable and decide on a further approach to manufacturing. Models were created using information from the manufacturer and using them, conditions for manufacturing the impeller in the 1:1 ratio were derived. Based on the new technological process and the experience from prints a new price calculation for the fan impeller using 3D printing was created.
|
|
|
3-wheel air cycle machine
Vrána, Jan ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
For air cooling in aircrafts is used an air cycle machine. Recently, there is focusing on incresing efficiency of air cycle and due this are added another rotors. Design of machine with three rotors is performed in this thesis.
|
|
|
Program for calculation of ventilation and heating in synchronous machine
Kolář, Pavel ; Ondrůšek, Čestmír (referee) ; Huzlík, Rostislav (advisor)
This master´s thesis deals with ventilation of synchronous generators with a cylindrical rotor. For the design of ventilation we apply basic physical laws in the field of hydromechanics and thermomechanics. Therefore the first chapters are devoted to these subjects. They are followed by the description of ventilation systems and a thermal net is created and solved for one of them consisting of the thermal resistance and sources. The final part deals with a program, which I developed in Visual Basic 2008 Express Edition. This program enables to calculate the ventilation and heating of individual parts of the machine after entering basic machine dimensions and losses.
|
|
|
Structural analysis of part of electrical machine
Fodor, Viktor ; Hájek, Vítězslav (referee) ; Janda, Marcel (advisor)
This thesis discusses the optical diagnostics of electrical motor parts using a 3D scanner. It describes the construction of electrical induction motors, their heat losses, cooling and refrigeration systems that may be used by such motors. It approaches the possibilities of heat recording and briefly explains the 3D scanner’s principal. It also introduces the simulation program ANSYS which uses the finite element method. This thesis shows the post processing of the digitalized object and the simulations and compares the simulation and measurement results. The final part is devoted to the analysis of the obtained results.
|
|
| |
|
| |
|
|
Sound emission directivity model
Zdvyhal, Marian ; Hájek, Roman (referee) ; Hejčík, Jiří (advisor)
This diploma thesis solves creation of a computing model of sound propagation for determination of acoustic pressure level around multiple point sound source with consideration of sound directivity of each source (compresor and fan). Thesis contains neccesary theoretical knowledge for creation of computing model and basics of sound measuring, theoretical computing model, measurement data of real unit and model configuration for real measured values. Computing code of the model in Visual Basic for MS Excel is a part of the thesis.
|
|
|
Ball position control with airflow using PLC
Hubálek, Michal ; Němec, Zdeněk (referee) ; Lang, Stanislav (advisor)
This bachelor thesis deals with the design of an educational model of air levitation and regulation. The theoretical part introduces the principle of the programmable logic controller of the company B&R Automation. In the next part, methods of measuring distance were described. The main part of the work was the construction of the whole mechanical part. Furthermore, the design of electronics and cabling to connect the model with a programmable controller. The final output is a functional model of air levitation and a tutorial for the subject.
|
|
|
Using thermoelectric generator to increase the efficiency of the radiator
Kříž, Pavel ; Janák, Luděk (referee) ; Vlach, Radek (advisor)
This diploma thesis deals with a design layout of the fan power supply that ensures the increase of the efficiency of the heating unit. For usage in the areas without electric power, the power supply is secured by thermoelectric generator. The system has to function on the basis of autonomous system which turns itself on only when necessary. In the introductory part of the paper there is a recherché of thermoelectric generators for general usage. Next it mentions the basic findings in from the field of DC/DC converters for low power applications. In this part attention is given to MPPT algorithm. Furthermore basic knowledge from the field of heat transmission together with its most used elements is described. Subsequently existing applications that increase the effectiveness of heating are mentioned. Their disadvantage however is that they depend on the external source of power supply. The practical part to a large extent covers the analysis of the suitability of the chosen thermoelectric module. For securing of the heat gradient of the generator there was a model created meeting the figures in the manual and there are several simulations in the MATLAB program. Furthermore several measurements of the thermoelectric module took place in order to secure realistic figures. Subsequently a DC/DC converter was chosen. Finally the testing was made on the real composition. In conclusion there is an overall evaluation including the real usage and the economical aspect of the project. The outcomes of the work enable to avoid common mistakes that are part of many specialized articles. The created system is to be used after the adjustment of the cooling to the required aim. At the same time it becomes very effective.
|
guest ::
