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Air conditioning in multifunctional center
Svobodová, Leona ; Blasinski, Petr (referee) ; Rubina, Aleš (advisor)
The object of this bachelor thesis is the design of air-conditioning equipment in a multifunctional centre. The devices serve a multifunctional hall and a room with over-head, the lighting and the sound. The units are designed in a way to meet all the hygienical, operational and functional requirements and to create optimal in-door microclimatic conditions for people to stay. There were used all the available budget calculations, applicable regulations and standards for this design. The air-conditioning provides a supply of fresh air and conducting of depreciated air, cov-erage of heat losses, removal of heat load and humidification of air. The theoreti-cal part deals with the system of return gaining of heat and describes advantages and disadvantages of every device enabling.
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Web Application for Dietary Plan Creation
Matějíček, Vojtěch ; Zendulka, Jaroslav (referee) ; Bartík, Vladimír (advisor)
The aim of this bachelor's thesis was creation of a web application which generates daily menus based on measuring body losses. User creates records of his losses at regular intervals. Food in these menus correspond to food or dietary plan that user chooses from three implemented plans. Therefore, getting familiar with principles of creating web applications and studying theory of implemented dietary plans were both part of this thesis. Application provides opportunity to review recipes and creates shopping lists. Recipes, menus and shopping lists can be printed. User registers and logs in the application with his e-mail and password.
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Aircondition of club
Urban, Ondřej ; Rubinová, Olga (referee) ; Uher, Pavel (advisor)
This bachelor´s thesis deals with the air-conditioning of a club. Its design focuses specifically on sanitary facilities and sports hall. The project of the bachelor thesis covers ventilation units, including heat recovery from a sport hall and outline of displacement ventilation.
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Utilization of waste in the context of current legislative measures and principles of circular economy
Dočekal, Petr ; Vymazal, Petr (referee) ; Chorazy, Tomáš (advisor)
This bachelor thesis deals with the use of selected types of waste under the conditions of current legislation in force in the Czech Republic. It focuses on plastic packaging waste and sewage sludge – waste generated from municipal wastewater treatment. The aim of the work was to process a search of current legislation and strategic documents in the field of waste management in the context of the principles of circular economy and then design and then critical evaluation of the optimal system of utilization of the above waste based on the principles of circular economy. Both its strengths and weaknesses as well as basic economic parameters were described. The first part of the work is a description and current methods of waste management and search for legislation and strategic documents at the EU and Czech level. In the second part, the optimal circulatory method of waste management is designed and evaluated. A delivery system is currently in place for plastic packaging waste. The bachelor work deals with a new system of taking back PET bottles and compares their strengths and weaknesses. For the sewage sludge, drying and subsequent pyrolysis were chosen as the optimal treatment method, which seems to be a very efficient method.
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Design of air conditioning system of a flat
Vrbický, Jiří ; Zerzaňová, Alena (referee) ; Hejčík, Jiří (advisor)
The diploma thesis is consisting of theoretic part, which deal with used ventilating systems, ways of waste heat recovery and describe basic types of air-conditioning systems. Following part attend to design of ventilating system and multi-split air-conditioning system for flat. Part of design of ventilation system is calculation of noise levels in rooms. Air-conditioner design is based on calculation of thermal stress. Annual demand of cold and heat demand are calculated using TRANSYS software. Design documentation is part of the diploma thesis.
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Producing of aluminum shell
Šindelka, Karel ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The bachelor's thesis is focused on the design of a large-caliber signal cartridge. As a semi-finished product, a dome is chosen, which will be cut from aluminum sheet, according to the ČSN 42 4005 standard. Thanks to good cold formability and a large production series, it is suitable to use back-extrusion technology. The semi-finished product for this operation is a calibrated roller, from which a thin-walled cup is subsequently formed. Another operation is the shaping of the bottom of the cartridge case, in which it is necessary to create a flange and a cavity for the match. Since the semi-finished product is cut from a sheet metal sheet, it is advisable to choose multi-row cutting, in which the material utilization is about 70%. Thanks to the combined set of tools, it is possible to perform several operations per machine stroke. In this way, hundreds to thousands of pieces can be produced per hour. The extruder and extruders are made of tool steel 19 423 according to the drawing documentation.
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Basics of space motion
Bahník, Michal ; Rozehnalová, Petra (referee) ; Kisela, Tomáš (advisor)
This Bachelor thesis is a summarising text which deals with the issue of space motion. We analyse one-body, two-body and three-body problems. We derive analytical solution for the first two problems, from which we derive Kepler's laws, which are important for understanding of the space motion. We also discuss the relation of analytical solution to escape velocities. The closed form of analytical solution for general case of three-body problem does not exist. There are special cases, so-called stable orbits, for which the analytical solution is known. We design the numerical solution by explicit Runge-Kutta-Bogacki-Shampine method and back diferentiation method and we will test the results on the stable orbits.
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Design of warm air heating system for low-energy house
Koutník, Martin ; Krejčí, Vladimír (referee) ; Košner, Jan (advisor)
The diploma thesis deals with design of warm air heating and ventilating system for low energy house. Introduction of this thesis is focused on dividing residential buildings by their heat requirement. Then problems of residential building ventilation and possibilities of warm air heating systems including heat recovery are presented. In the next chapter summary of ventilating units with heat recovery and warm air heating units for residential low energy buildings and pasive family houses is presented. Calculation of low energy house heat losses, which is solved, is based on CSN 06 0210, CSN 73 0540 and CSN EN 12831 standards. Design and calculation of warm air heating and ventilation system and ground heat exchangers is also described. Floor heating system, fireplace insert and solar heating system are designed as supplementary systems. At the end of this thesis the control system is presented. Project documentation is enclosed in appendix.
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Apartment building
Jaroš, Radek ; Havířová, Zdeňka (referee) ; Lavický, Miloš (advisor)
The subject of this bachelor's thesis is the design of a new apartment building and the elaboration of project documentation for the construction. The apartment building is located on the southern outskirts of the city of Brno in the Brno - Jih district, in the part of the village Přízřenice on flat terrain. The building is designed as a free-standing building with four above-ground floors and one underground floor completely sunk below ground level. In the underground part of the apartment building there is a technical background of the building and individual cellar cubicles for the housing units. There are twelve residential units in the above-ground part of the building, three units on each floor. Housing units on the ground floor are complemented by terraces, housing units on other floors are complemented by balconies and loggias. A barrier-free entrance to the building is designed. An elevator is also designed in the building. The above-ground part of the apartment building is made of Porotherm ceramic blocks and insulated with a contact thermal insulation system. The external load-bearing walls in the basement are monolithic made of reinforced concrete. The horizontal load-bearing structures are made of monolithic reinforced concrete slabs. A single-skin flat roof is designed for the apartment building. The building is based on foundation strips. The building is designed parking with a sufficient number of parking spaces. The house is designed according to the requirements for buildings with almost zero energy consumption. Such a requirement has been achieved through heat recovery and building envelope parameters.
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Utilizing psychoacoustic model and Wavelet Packet Transform for purposes of audio signal watermarking
Heitel, Tomáš ; Schimmel, Jiří (referee) ; Rajmic, Pavel (advisor)
This Thesis deals with a method to enforce the intellectual property rights and protect digital media from tampering – Digital Audio Watermarking. The main aim of this work is implement an audio watermarking algorithm. The theoretical part defined basic terms, methods and processes, which are used in this area. The practical part shows a process of embedding the digital signature into a host signal and her backward extraction. The embedding rule used spread spectrum technique and a psychoacoustic model. The implemented psychoacoustic model involves two properties of the human auditory system which are frequency masking and representation the frequency scale on limited bands called critical bands. The model is relatively new and based on the DWPT. In terms of above model is then the digital watermark embedded in the wavelet domain. This algorithm is implemented in technical software MATLAB. One part of this work focuses on robustness tests of the algorithm. Common signal processing modifications are applied to the watermarked audio as follows: Cutting of the audio, re-sampling, lossy compression, filtering, equalization, modulation effects, noise addition. The last part of the thesis presents subjective and objective methods usable in order to judge the influence of watermarking embedding on the quality of audio tracks called transparency.
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