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Sorption heat pump
Veselý, Josef ; Štelcl, Otakar (referee) ; Pospíšil, Jiří (advisor)
This thesis deals with the issue of sorption heat pumps. The theoretical part is devoted to a detailed description of the function of adsorption and absorption heat pumps. For a better understanding of the adsorption cycle is computed theoretical thermal cycle and the heating factor of zeolite adsorption heat pump are computed. The practical part is focused on the design absorption heat pump that works in conjunction with a natural gas boiler. The pump is designed for cooling flue gas condensing boiler and the possible use of thermal energy from other low-temperature source. The thesis contains a thermal calculations, engineering design and structural design of the heat pump.
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Design and construction of a linear hydraulic motor
Melichar, Martin ; Budík, Tomáš (referee) ; Merenus, Ondřej (advisor)
This bachelor’s thesis is interested in linear hydraulic motors. The first part consist of technical research in the field of linear hydraulic motors. The second part focuses on the construction of linear hydraulic motors including all necessary calculations. The thesis also includes technical drawings containing the total linear hydraulic motor assembly with the drawings of the top and bottom cover.
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Analysis of work equipment that are suitable for recycling of construction materials and waste.
HOŠEK, Lukáš
The aim of my thesis is to give an overview and analysis of appropriate facilities for recycling construction materials and waste products. I deal with the generation of construction waste resulting from demolition procedures and examine the classification of the demolition waste and its subsequent usage in recycling materials processes. The work further addresses the usage of relevant earth-moving machinery in this sector, including relevant adapters for demolition works. The thesis also contains an overview of crushing units with selected technical parameters including theoretical performance. The main criterion for the distribution of mobile crushing units is the size of the inlet. The results of measuring cycles and data for the calculation of the efficiency of crushers at particular work in the processing of construction debris are also given. The actual performance values are compared with the theoretical ones. In all cases, the actual performance is lower than the theoretical one.
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Reduction of radiation exposure by the use of the fluoroscopic spinal navigation system during the transpedicular screw placement of the lumbal spine.
ŠRŮTKOVÁ, Eva
RADIATION EXPOSURE REDUCTION BY THE USE OF FLUOROSCOPIC NAVIGATION IN TRANSPEDICULAR INSTRUMENTATION OF THE LUMBAR SPINE SUMMARY The topic of this thesis is a comparison of radiation exposure during standard fluoroscopy and navigated transpedicular instrumentation of the lumbar spine, in compliance with standard techniques and accuracy of screw placement. Material and the Method: A group of 60 patients, divided into two equal groups, was statistically processed. In the first group 1.9 lumbar spine segments were stabilized. The patients´ average age was 60.8 years (from 35 to 75 years). Screws were inserted transpedicularly under the X-ray image intensifier navigation. In the second group stabilization of 1.8 segments was performed on average. The average age was 61.1 years (from 38 to 75 years). The screws were inserted postoperatively by using 2D fluoroscopic navigation technique (VectorVision, BrainLAB, Germany). The duration of skiascopy was collected from the X-ray image intensifier and recorded for each surgery (with navigation and without). The measured values were compared with each other. In both groups the screw positioning was checked continuously according to the rules defined by Learch, Acikbas and Whitecloud in the anteroposterior and lateral projection by meticulous pedicle palpation Results: The radiation exposure was calculated to one vertebra (2 screws) in both groups. In the second (navigated) group the radiation exposure time was significantly shorter (3.4 s) than in the first (standard) group (14.4 s). The mean duration of data registration was 6.0 minutes (range 3 to 11 minutes). The mean ratio according to Acikbas's calculation method was 43.2 % (range 32 % to 74 %) in the first group and 44.1% (range 35% - 76%) in the second group. The mean exposure dose of the first group was 243 ?G/m2 and 138 ?G/m2 in the second group. Exposition doses are smaller by 105 ?G/m2 in the second group Conclusion: Based on the results, the hypothesis that navigation allows the same accuracy of pedicle screws insertion while reducing radiation exposure of the patients and the operating room staff to about ? can be confirmed. This reduction is more pronounced in multiple-level spinal stabilizations and in the centers for spinal surgeries, where numerous spinal instrumentations are performed every day.
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Transferové ceny
Brabenec, Tomáš ; Marek, Petr (advisor) ; Buus, Tomáš (referee)
V diplomové práci je pojednáváno o mikroekonomických základech stanovování transferových cen s důrazem na definici modelu závislého trhu. Práce dále obsahuje analýzu daňových dopadů stanovování transferových cen v České republice a v mezinárodním kontextu, v této souvislosti stručně rozebírá požadavky na vedení dokumentace k transferovým cenám jako důkazního prostředku pro kontroly správcem daně. Práce dále řeší aktuální otázky postavení transferových cen v tzv. síťových koncernech a investičních pobídkách. Součástí práce je také analýza metod oceňování transferových cen z pohledu zákona č. 151/1997 Sb., o oceňování majetku a směrnice OECD pro nadnárodní společnosti a daňové správy. V práci je rovněž rozebrána možnost aplikace regresních modelů pro stanovení strategie tvorby transferové ceny.
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The heat transfer medium in heating systems
Michalíčková, Iveta ; Blasinski, Petr (referee) ; Počinková, Marcela (advisor)
Theme of diploma thesis is the heat transfer medium in heating systems. The thesis is departed to three parts. In the first part, there is a theoretical solution of heat transfer mediums. In the second part, there is a calculation solution of the project. Project solves heating of the apartment building. There are two variants of heating source and water treatment. Those variants are compared. The last part is experimental part. Theme of the experiment is quality of heating water in heating systems.
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The timber viewtower
Lecián, Martin ; Straka,, Bohumil (referee) ; Buchta, Stanislav (advisor)
The master's thesis deals with design and static assessment of loadbearing structure the timber viewtower on the hill Hostyn. The shape of the structure is very close oblate spheroid. Towers plan shape is a regular octagon whose outer diameter varies along the height. Tower in the footing and in the top measure 10,5 meters, at mid-height measure 6.5 meters. The height of the viewtower is 35 meters and view floor is located at a height of 30.5 meters. The main structure of tower consists outer towers curved wooden columns and interior steel column. Columns support the horizontal beams and bracing provide rigidity of the structure. The roof has a pyramid shape towers and tends to 17 °. Outer columns are designed from glued laminated wood GL24h, others carrying wooden beam are designed from solid timber C24 steel rods are designed from steel S235. Connections are solved using steel components. The work includes structural calculation, technical report and drawings.
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Riding hall
Jakubíček, Tomáš ; Buchta, Stanislav (referee) ; Sýkora, Karel (advisor)
In diploma thesis i designed supporting strukture of roofing for riding hall located in Pardubice. Building height is 9,5m and the other two dimensions are 48,7x77,5m. The actual frame with elliptically shaped truss system. The actual structure is formed from a conventional timber of different cross-section. Roof is supported by trapezoidal sheet. wooden elements are connected by steel plates, pins and bolts. Chosing variants depends on material price and manufacturing cost. A goual of my diploma thesis is to make static calculations and drawings.
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