National Repository of Grey Literature 72 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Short-term and medium-term rehabilitation plan for selected sewer network
Chromík, Radek ; Lžičař, Jakub (referee) ; Raclavský, Jaroslav (advisor)
The author of the thesis deals with the issue of the short-term and medium-term rehabilitation plan for selected sewer netwotk. Resolved area for this work is the town of Břeclav. The Contracting Authority selected the area of interest that falls within the cadastral territory of Břeclav - Poštorná. The aim of the thesis is to elaborate a short-term and medium-term strategy of remediation of a selected part of the sewerage network for the need of a recovery plan.
Steam turbine - pipeline design
Kotas, Jakub ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
The master thesis deals with the design, tracing and dimensioning of condensate pipeline. In the beginning, a preliminary calculation of heat balance is done. It is followed by a description of the main condensate system supplemented by the computational design of pipeline and the calculation of pressure losses in this pipeline. The crucial part of the thesis is the calculation of pressure losses, which is done in two ways. The first approach to calculation of pressure losses in the pipeline is calculated using values of representative resistance coefficient for pipe ele-ments using Idelchik literature and for individual types of valves using values from datasheets of Siemens Energy suppliers. In the second approach to calculation representative resistance coefficients for pipe elements and individual types of valves CRANE literature are used. Then both approaches of choosing representative resistance coefficients are compared and evaluated. Based on the calculated values, a suitable pump is selected at the end of the master thesis.
Instruction level parallelism in modern processors
Sláma, Pavel ; Levek, Vladimír (referee) ; Pristach, Marián (advisor)
Basic methodology that exploits instruction level parallelism is called pipelining and it is part of every processor for decades. The ideal pipeline increases performance and efficiency for a relatively small cost. But the real pipeline has number of limitations caused by dependencies and hazards between instructions. The aim of this thesis is to discuss techniques used to improve efficency and performance of pipelined processors, to implement selected techniques to a RISC processor model and discuss its benefits.
Assessment of gas pipeline reliability based on mechanical and fracture tests of pipe segments\nfrom VTL DN 500 (lane no. 41 and 56) and VTL DN 300 (lane no. 152)
Gajdoš, Lubomír ; Šperl, Martin ; Šorm, Filip
Determination of mechanical and fracture mechanical properties include analysis of the critical crack dimensions for specific gas pressure and pipe segment (material).
Cost-efficient design of high pressure gas pipeline
Šrámková, Veronika ; Pernica, Marek (referee) ; Létal, Tomáš (advisor)
The aim of this thesis was the cost-efficient design of high pressure gas pipeline with a maximum capacity 40 mil.Nm3/day and a length of the pipeline 100 km. The economic design consisted of analyzing and comparing expenses for three different pipelines over a 20-year period. The thesis includes the design of pipe dimensions with proposed thickness of pipe walls according to STN EN 1594: 2014 and ISO 4200: 2010. Software Simone was used in order to determine the pressure loss and the number of compressor stations. Software calculated the necessary power of compressor stations and fuel gas consumption as well. Based on the necessary power, the most economically advantageous gas turbine compressors were chosen for each compressor station. The capital expenditures consisted of the price for compressor stations together with gas pipelines. The operating expenditures for 20 years were added to these costs. In conclusion of the thesis, a comparison of expenditures for all 3 variants was conducted. Based on the results, it can be stated that the most economically advantageous variant of the construction is a gas pipeline with a diameter DN1000.
Process pipeline design
Motyka, Ondřej ; Babička Fialová, Dominika (referee) ; Jegla, Zdeněk (advisor)
This bachelor thesis deals with the description of each areas and activities in designing pipeline routes for process equipment, that the designer or constructor has to propose properly and appropriately. First part of this bachelor thesis is focused on the theoretical knowledge and necessary knowledge for the design of a functional route for process equipment. Also, more detailed description of the designing the pipeline can be seen in the first part, such as pipe gripping, thermal expansion, corrosion and pipe insulation. The practical part will deal with the individual steps in creating a project according to the task from engineering organization and creating drawing documentation using the available software. The aim is to describe the procedure for working with this software and the subsequent introduction of this knowledge into the practical design of pipeline routes.
Geopolitical Rivalry in Central Asia and Turkmenistan's power as a weak state
Welsink, Emma ; Šír, Jan (advisor) ; Horák, Slavomír (referee)
Thesis abstract: Geopolitical Rivalry in Central Asia and Turkmenistan's power as a weak state Charles University, Institute of International Studies, MAS programme 2019 Emma Welsink English Abstract Research on weak states and their position in the international system has been a widely discussed topic for decades, especially in relation to the Cold War bipolar system that revolved around Russia and the United States as great powers. Yet what is lacking is a contemporary analysis that concentrates on the current multipolar system in which the importance of economic alliances and power surpass military power, and how this affects weak states' foreign policy behavior and trade opportunities. This research therefore offers an empirical analysis on great power geopolitical competition between Russia and China over Turkmenistan's economic allegiance, specifically regarding its natural gas export, and seeks to explain how this geopolitical competition has affected Turkmenistan's foreign energy policy behavior as a weak state vis-á-vis these great powers. Additionally, this research seeks to examine how Turkmenistan has even instrumentalized this competition to further its national interest of energy export diversification. More specifically, this research shows that great power competition has played a...
Determination of mechanical and fracture mechanical properties for high pressure gas pipelines (line no. 154 and 223 - DN 500, line 113 - DN 200
Gajdoš, Lubomír ; Šperl, Martin
Determination of mechanical and fracture mechanical properties include analysis of the critical crack dimensions for specific gas pressure and pipe segment.
The study alternatives village sewer system Kamenný Malíkov
Rőssová, Markéta ; Raček, Jakub (referee) ; Hluštík, Petr (advisor)
The diploma thesis is focused on the possibilities of drainage of waste water and its subsequent liquidation in the village of Kamenný Malíkov. The aim of this diploma thesis is the elaboration of variant solutions for drainage of Kamenný Malíkov. Furthermore, the proposal for wastewater treatment, the economic comparison of variants and the recommendation of the unsuitable variant. The diploma thesis deals with the proposal of predominantly gravitational way of drainage of waste water in combination with the pressure, due to incline terrain in the village. Each eventuality has wastewater treatment method designed.
Operational efficiency of boilers
Doležal, Lukáš ; Adam, Pavel (referee) ; Počinková, Marcela (advisor)
The topic of this diploma thesis is the operational efficiency of heat sources. The work had several goals. The first was to determine the efficiency of the wood boiler according to available calculation methods and to compare the methods among them. The second was to determine the difference in the performance of the flue gas analyzer and the real calculation. Further, to determine the efficiency of a boiler firing different wood species - spruce and hornbeam based on their properties and elemental composition. Experimental measurement of various operating states of effectiveness took place in an older two-generation family house, which was also the subject of the project part. Due to lack of project documentation, it was necessary to focus and plot the object. Afterwards, the building was thermally inspected and the design of the heating system and the reconstruction of the whole heating system was carried out. The project was developed in two variants for two different heat sources - a heat pump and a solid fuel boiler for heating and water preparation. The thesis deals with the technical report, the conceptual solution of the related professions, the evaluation of the heat source variants and the project documentation.

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