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Ranque-Hilsh vortex tube
Obrlík, Jan ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
Ranque-Hilsch vortex tube is thermally-fluid device in which there is a conversion of the pressure energy of the incoming fluid stream to heat energy of two exiting streams without any mechanical parts. The first part of this paper deal with the basic distribution, applications and principle of the vortex tube, which is not fully understood. In the second part there has been carried out a search about performed experimental measurements. Based on this research is designed optimized experiment. The last part of work is the evaluation of the measurement, which was carried out on an industrial vortex tube.
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Brown Coal Power Plants in Czech Republic
Šperka, Radim ; Šnajdárek, Ladislav (referee) ; Špiláček, Michal (advisor)
The thesis describes brown-coal power plants in the Czech Republic. The first part discusses brown coal as a mineral raw material, its mining in the Czech Republic, the impact of mining on the environment and ecological territorial limits.. The second part deals with the Thermo-dynamic working cycles in the power plant. Also deals with various technological parts of brown-coal power plant, including equipment and procedures for the cleaning of exhaust gases. The last part describes the most important individual brown-coal power plants in the Czech Republic, their brief history, the technical parameters and the planned service life.
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Analysis of the usability of a reduction-cooling steam uniton the principle of a vortex tube
Vintr, Lukáš ; Šnajdárek, Ladislav (referee) ; Škorpík, Jiří (advisor)
The aim of the thesis was to describe the current issues of the reduction-cooling station, vortex tube, comment on its use and the design a classic reduction station as the first case. The second practical part was an analysis or comparison of a reduction cooling station operating on the principle of a vortex tube with a conventional one. At the end of the thesis, the problem of determining the radius for the total number of pairs taken is explained. The problem is caused by the instability of potential vortex, which arises mainly because we want to take away matter, but we need to conserve energy. The assumption for the total number of pairs is that it will be more than 10 times higher than the standard variant of the reduction cooling station. From the principle of the vortex tube and the available results, it is clear that the device could be used only for cooling, not for reduction.
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Shale gas extraction
Podhorský, Jakub ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
This bachelor’s thesis on Shale gas extraction describes extraction and world shale gas resources. At the beginning it provides introduction to the terms of geology and overview of historical evolution of extraction and crucial technologies that are currently used in extraction. Shale gas exploration and extraction development is briefly mentioned. Horizontal drilling and hydraulic fracturing is then further described and also summary of the equipment is provided. Potential environmental risks associated with extraction or hydraulic fracturing itself are described. Subsequently world shale gas resources and potential extraction places are described. World technically recoverable resources are estimated at 7245 Tcf. Shale gas commercial production is currently underway in the United States, Canada and China.
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Design of turbocharger
Streďanská, Alexandra ; Šnajdárek, Ladislav (referee) ; Škorpík, Jiří (advisor)
Diploma thesis focus on the design of turbocharger in SW MS Excel. For required flow and pressure ratio, the thermodynamics parameters were calculated for the turbocharger. From these, geometry was designed and the condition of mediums was calculated for each part of the turbine and compressor. At last basic characteristics of the turbine and compressor on varying the regime of engine operation the rotation was made and offered an idea about the working point position.
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The flange gasket modification of TC SVO1 ion filter manhole on the VVER 440 NPP
Šnajdárek, Ladislav ; Fiedler, Jan (referee) ; Šen, Hugo (advisor)
This diploma thesis is engaged in replacement of gasket ion filter used in the ion filter of continuous cleaning TC SV01 of rector coolant in nuclear power plants with VVER 440 reactor. Original nickel gasket is replaced by kammprofile gasket with expanded graphite. Calculation results are compared with each other and are described as suggestions for further calculation. The first part included a detailed description of the primary coolant water chemistry, along with a description of the function and structure of ion filter.
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Steam ejector pump
Třináctý, Jan ; Baláš, Marek (referee) ; Šnajdárek, Ladislav (advisor)
The aim of this theses is to do search about maintaining vaccum in surface condensors and subsequently propose basic dimension of one stage steam ejector. The first part deals with the issue of vacuum. The following part is dedicated to description of various types of vacuum pumps. Hence it describes the principle of operation of each pump as well as their output. The following part deals with vacuum and vacuum technology in the field of power engineering. This part is dedicated to those types of vacuum pumps that are used in power engineering, especially to steam ejectors which are most widely used. The final part is addressed to the design of single stage steam ejector. This part contains the calculation of pump dimension. The conclusion evaluates the design of one stage steam ejector.
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Vortex tube made by additive technology
Spáčil, Petr ; Šnajdárek, Ladislav (referee) ; Chýlek, Radomír (advisor)
The aim of this bachelor's thesis is designing and 3D printing of a detachable Ranque-Hilsch vortex tube. In the following chapters will be presented basic types of vortex tubes and its usage. Then the thesis deals with parameters, that have an impact on the effectiveness of vortex tube. In the main part, the design of individual parts is described. After 3D printing and assembling, the vortex tube's performance is measured with variations of some parameters.
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Technology for liquefaction natural gas and its use and distributing
Konopiský, Karel ; Šnajdárek, Ladislav (referee) ; Škorpík, Jiří (advisor)
This bachelor thesis is concerned with technologies of liquefaction of gases, and methods of their subsequent storage and utilization. Firstly, I summarise a history of the technology of liquefying gases and reaching low temperatures. In the following parts, the thesis is focused on means of utilization and distribution of liquefied gases. Special attention is paid to liquid natural gas, which is the most used liquefied gas in practice. A separate part of the thesis is then designated to a method of liquefaction of natural gas.
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