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Modular absorption cycle
Honka, Pavel ; Pavlů, Jaroslav (referee) ; Pospíšil, Jiří (advisor)
The thesis is focused on the cooling cycles, namely cycles of absorption. The work is divided into several parts, as problems to be solved. The first part deals with the principles and using refrigeration cycles in practice, their involvement and by comparing the working pairs of substances circulating in the absorption unit. The practical part deals with making a proposal for one-and two-level modular absorption cycle of 6 kW, and the subsequent techno-economic comparison with commonly supplied absorption unit
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The large-scale solar systems
Králová, Martina ; Rubinová, Olga (referee) ; Počinková, Marcela (advisor)
Entering of thesis focuses on large-scale solar systems. Large solar-scale system will be used for heating water in public swimming pool. The pool is located in Brno - country. The pool is operated year-round. Great emphasis of the thesis is on the surface heat loss. Evaporation of water from the water surface is also applied in the experimental part of the thesis. In the calculations is used software for modeling the thermal microclimate of buildings and air conditioning design Teruna.
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Power measurement in ultrasound fields
Škůrek, Pavel ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
This work is focused on the developement of a sensor, which enables to measure the ultrasonic power by heat effect of the mechanical Wales. The princip of two basic kinds of thermoacoustic sensor is descibed here – one level and two level sensor. This work also contains a proposition of these sensors with description of each parts and a trial to find suitable absorber. Achieved results, which support the function of the sensors are presented here by form of graphs and tables. Measuring by thermoacoustic sensors is confronted here with measuring of ultrasonic by hydrophone, which is used as reference measuring.
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Trigeneration and its use in practice
Čupera, Pavel ; Mastný, Petr (referee) ; Baxant, Petr (advisor)
e master's thesis clarifies the concept of trigeneration and the principle of absorbing cooling. Compare the advantages and disadvantages of this method of manufacture cool with compressor cooling. It presents an overview of the implementation of a developing cold absorption and performance. Acquainted with the types of absorption chillers of the two leading suppliers, their characteristics and existing applications of these refrigeration units in operation in the Czech Republic and abroad. It also assesses the possibility of using these units in conjunction with a cogeneration unit powered by internal combustion engine. It follows from the economic assessment of costs and income of the absorption chillers and compressor chillers and on concrete examples and an assessment of the effectiveness of the various options.
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Solar collectors of Viessmann Company – technical and economical assessment
Kábele, Pavel ; Bělka, Miloslav (referee) ; Jaroš, Michal (advisor)
This work is about technical and economical asessment of solar collectors by Viessmann company. In the first part there are general distribution, description each parts of collectors and parameters which affect a function of collectors. In the second part there are Viessmann company, description of present production. Suitability of use and technical parameters. The last part deals the effect of Viessmann, including basic energetic and economic calculation.
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Class Super 2000 Rally Cars
Ratiborský, Pavel ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This bachelor’s thesis is divided into three points. The first section is divided into the basic design elements of the Super 2000 cars and briefly describes their function. In the second section is a call for representatives of this class, described the design and comparison with a standard car. The last point is outlined the possible future development.
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Chassis of racing motorcycles
Kudr, Jan ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
Those theses describe complex of motorbike chassis and components from racing sector. Here is explained geometry of motorbike chassis and impact to riding properties. Geometry of motorbike chassis and driving style are closely linked with adjusting of damping and springing. In the end, depending on chassis adjustment tires can show us how good or how bad is adjusted the chassis.
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Rallye Championships and Used Engineering Including WRC Series
Novák, Pavel ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
The content of the bachelor thesis is an overview of the current condition of technics used in the car racing competitions focused on the WRC serial. The thesis is diveded into five parts. The first part introduces the contemporary car competitions and FIA federation. The second part is focused on specification of the WRC cars. The third part familiarizes with the organization process of the WRC championship. There are introduced crews with their teams and their results in the constructor cup. The main attention is given to the parts four and five which deal with the contemporary engineering used in WRC and the development trends in this field. There are given methods of virtual designing, computer simulation and testing. In the conclusion of the thesis there are mentioned examples of WRC car development and solutions assumed for the serial cars from the WRC technics.
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Solar collectors with vacuum tubes
Petruška, Bohumil ; Katolický, Jaroslav (referee) ; Jaroš, Michal (advisor)
This thesis deals with solar collectors with vacuum tubes. The first part is focused on describing the function of the collectors, comparing with other types of solar collectors followed by specifications of their usage. Another topic is the heat transfer fluid that is used for transmission of heat, and therefore it is an important component of a collector. The last part deals with an application concept of use of a vacuum tube solar collector, including basic energetic and economic calculation.
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Měření, analýza a zlepšení hlukových vlastností železničních dvojkolí
Boháč, T. ; Šeděnka, M. ; Smutný, J. ; Pazdera, L. ; Pešek, Luděk
Within the long-term development of railway wheels with vibration and noise absorbers manufactured in the Bonatrans Group a.s., their numerical modelling is in process as well as their dynamic and vibro-acoustic testing in laboratories and in operation. This article provides a brief description of the methodology of operational measurements of the railway wheels noise with and without absorbers including the results obtained on the basis of the analyses of the measurements in the underground in Boston and Prague and on the test ring of the reference track in Cerhenice. The effectiveness of the applied absorbers resulting in reduction of the noise of moving vehicles on various tracks during various travelling modes is evident from the results.
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