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Influence of calculation accuracy on final parameters of heat exchanger
Matyska, Stanislav ; Radil, Lukáš (referee) ; Foral, Štěpán (advisor)
The aim of this thesis is to make the design of the heat exchanger more accurate. It is assumed that the division of the tube bundle of the heat exchanger to a plurality of parts by the transferred thermal output can achieve more accurate values. The first part of this thesis is dedicated to the sorting of the heat exchangers according to different criteria, and a brief description of most of them. It describes what are their functions and what are the demands placed on them. Next, there is given a detailed description of the tubular heat exchanger, specifically the mantle one because it is fundamental for this thesis. To investigate the influence of calculation accuracy, there is selected a reference heat exchanger, which processes the study. There are described the main characteristics for the reference heat exchanger (transferred thermal output, heat transfer fluids, their temperature on inputs and outputs) and its construction (geometry of the heat exchanger, number of tubes, tube geometry). The thesis also discusses the influence of calculation accuracy of the heat exchanger at its parameters. In the next part, there is made a basic calculation of the tube bundle length and the pressure losses of the proposed heat exchanger. Here are assembled the theoretical basis for the calculation by dividing the tube bundle. Specific calculations are performed so that the tube bundle of the heat exchanger is divided into a selectable number of parts by the transferred thermal output. In each section, there is performed a calculation of the length of the specific tube bundle part. Individual lengths are added up and finally put together the entire tube bundle length. At the end of this section, there are calculated the pressure losses in the heat exchanger in a similar manner as for the calculating the total length of the tube bundle. In conclusion of this thesis there are described and clarified the results of the calculations. It examines the difference between the results of the reference and the proposed heat exchanger.
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Measurement of electrical soil resistivity
Matyska, Stanislav ; Topolánek, David (referee) ; Vyčítal, Václav (advisor)
This master’s thesis deals with the measurement of the electrical soil resistivity. In the theoretical part there are described the methods by which the soil resistivity is measured – especially the Wenner’s method, which was used for the practical measurements. Then there is also described the one-layered and the two-layered model of this method. Furthermore, there is described the procedure for the measurement of soil resistivity using the OMICRON CPC 100 and PU 193 instruments used in the measurement. To verify the modeling of a two-layered soil model, the theoretical part of the thesis describes the soil modeling process using the program Ansys. As for the practical part of the thesis, the measurements were carried out in three localities: Brno – Královo Pole; Hrušovany nad Jevišovkou – Pravice; Hustopeče nad Bečvou – Vysoká. The measured values were processed using the Matlab’s graphical user interface (GUI) that was developed within this thesis. From these values, at least one two-layered soil model was created for each location and both meters – a total of 12 models were created. For these models, measurements were simulated in Ansys. The results of the simulations were then compared with the measured values. The aim of this thesis is to compare the measured data with the data obtained by the simulations and subsequently to describe the suitability / unsuitability of the substitution of the one-layered soil model for the two-layered one for given measurements.
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A man in consecrated life and his relationship to women
MATYSKA, Stanislav
The aim of this thesis is to describe the history of celibacy in the Roman Catholic Church, to state the reasons why celibacy was introduced as obligatory for persons in consecrated life, and to comment on objections to it. There was described the history of celibacy from Jesus Christ to the Second Vatican Council, the theological and practical reasons for celibacy were given, as well as the most common objections to it with the arguments of the ecclesiastical authorities that defend celibacy. From its inception, the Church tended to introduce celibacy, but did not introduce it as a duty until 1139 at the Second Lateran Council. All subsequent councils have confirmed this law. The main theological reason for celibacy is the paragon in Jesus Christ, and for practical reasons it is above all freedom and time, thanks to which the celibate can devote himself fully to God or the Church.
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Measurement of electrical soil resistivity
Matyska, Stanislav ; Topolánek, David (referee) ; Vyčítal, Václav (advisor)
This master’s thesis deals with the measurement of the electrical soil resistivity. In the theoretical part there are described the methods by which the soil resistivity is measured – especially the Wenner’s method, which was used for the practical measurements. Then there is also described the one-layered and the two-layered model of this method. Furthermore, there is described the procedure for the measurement of soil resistivity using the OMICRON CPC 100 and PU 193 instruments used in the measurement. To verify the modeling of a two-layered soil model, the theoretical part of the thesis describes the soil modeling process using the program Ansys. As for the practical part of the thesis, the measurements were carried out in three localities: Brno – Královo Pole; Hrušovany nad Jevišovkou – Pravice; Hustopeče nad Bečvou – Vysoká. The measured values were processed using the Matlab’s graphical user interface (GUI) that was developed within this thesis. From these values, at least one two-layered soil model was created for each location and both meters – a total of 12 models were created. For these models, measurements were simulated in Ansys. The results of the simulations were then compared with the measured values. The aim of this thesis is to compare the measured data with the data obtained by the simulations and subsequently to describe the suitability / unsuitability of the substitution of the one-layered soil model for the two-layered one for given measurements.
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Influence of calculation accuracy on final parameters of heat exchanger
Matyska, Stanislav ; Radil, Lukáš (referee) ; Foral, Štěpán (advisor)
The aim of this thesis is to make the design of the heat exchanger more accurate. It is assumed that the division of the tube bundle of the heat exchanger to a plurality of parts by the transferred thermal output can achieve more accurate values. The first part of this thesis is dedicated to the sorting of the heat exchangers according to different criteria, and a brief description of most of them. It describes what are their functions and what are the demands placed on them. Next, there is given a detailed description of the tubular heat exchanger, specifically the mantle one because it is fundamental for this thesis. To investigate the influence of calculation accuracy, there is selected a reference heat exchanger, which processes the study. There are described the main characteristics for the reference heat exchanger (transferred thermal output, heat transfer fluids, their temperature on inputs and outputs) and its construction (geometry of the heat exchanger, number of tubes, tube geometry). The thesis also discusses the influence of calculation accuracy of the heat exchanger at its parameters. In the next part, there is made a basic calculation of the tube bundle length and the pressure losses of the proposed heat exchanger. Here are assembled the theoretical basis for the calculation by dividing the tube bundle. Specific calculations are performed so that the tube bundle of the heat exchanger is divided into a selectable number of parts by the transferred thermal output. In each section, there is performed a calculation of the length of the specific tube bundle part. Individual lengths are added up and finally put together the entire tube bundle length. At the end of this section, there are calculated the pressure losses in the heat exchanger in a similar manner as for the calculating the total length of the tube bundle. In conclusion of this thesis there are described and clarified the results of the calculations. It examines the difference between the results of the reference and the proposed heat exchanger.
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