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Prediction and experimental evaluation of the performance of a Z-type distribution system
Polcsák, Jakub ; Rebej, Miroslav (referee) ; Babička Fialová, Dominika (advisor)
The purpose of this work was to find a suitable calculation method for predicting the function of distribution systems in the design calculations of process and energy equipment. In particular, it aimed at describing the distribution of the working fluid flow in a dividing distribution system and a combined Z-type distribution system (with nozzles located parallel to opposite sides of the system). Analytical and CFD calculation tools validated by data from the performed physical experiments were used in this work. In the CFD method, the prediction of the dividing flow was performed for full 3D and simplified 2D geometry of Z-type distribution systems. The carried-out analyzes show that the prediction of the distribution system function obtained by both analytical and numerical approaches is accurate enough. The relative difference between the experimental and computational relative standard deviations did not exceed 9 %. The main disadvantage of 3D CFD analysis, especially concerning the purpose of the intended application, i.e., the inclusion of a distribution model in a complex modeling system for the initial design of heat transfer equipment, was the extremely long computational time. Analytical models appear to be a reasonable compromise between the accuracy of the flow distribution prediction and the computational times.
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The impact of HVAC systems on the acoustic microclimate of clean rooms
Jelínek, Ondřej ; Mathauserová, Zuzana (referee) ; Papež,, Karel (referee) ; Rubina, Aleš (advisor)
The work description is to create a system of measures to prevent the spread and the consequent attenuation of sound in air handling systems serving the cleanrooms. The thesis presents a solution to noise attenuation in the investigated area, and in HVAC duct, which uses a commercially available material in the form of sound insulation hoses. In the systém solution is part of the work focuses on the optimal design of terminal elements to distribute air in a clean room. Processing methods utilize theoretical and experimental approach. The experiment comprises a unique analysis of the sound insulation properties of selected products under specific conditions. The data obtained are analyzed and incorporated into the framework of this work created program module for determining the attenuation and noise propagation in an enclosed space. Math and physical dependence are programmed into their own DLL by programming language DELPHI.
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Comparison of Selected Methods of Valuation of Family Houses in Znojmo and its Affiliated Villages
Oremba, Lukáš ; Hrubanová, Michaela (referee) ; Hlavinková, Vítězslava (advisor)
Thesis, Comparison of selected methods of houses’ evaluation in Znojmo and associated communities, explains some of the currently used valuation methods. It also deals with comparison of prices which were determined by selected valuation methods. Those methods include cost approach, comparative method, the current price and the price of time. It accentuates the consideration of coefficient within connecting into utility networks – especially sewer. Then it focuses on ways of heating. The aim of this thesis is to find out how the aspect of connecting into utility networks is involved in methods of heating. For the evaluation there were selected 10 houses in Znojmo and associated communities.
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Prediction and experimental evaluation of the performance of a Z-type distribution system
Polcsák, Jakub ; Rebej, Miroslav (referee) ; Babička Fialová, Dominika (advisor)
The purpose of this work was to find a suitable calculation method for predicting the function of distribution systems in the design calculations of process and energy equipment. In particular, it aimed at describing the distribution of the working fluid flow in a dividing distribution system and a combined Z-type distribution system (with nozzles located parallel to opposite sides of the system). Analytical and CFD calculation tools validated by data from the performed physical experiments were used in this work. In the CFD method, the prediction of the dividing flow was performed for full 3D and simplified 2D geometry of Z-type distribution systems. The carried-out analyzes show that the prediction of the distribution system function obtained by both analytical and numerical approaches is accurate enough. The relative difference between the experimental and computational relative standard deviations did not exceed 9 %. The main disadvantage of 3D CFD analysis, especially concerning the purpose of the intended application, i.e., the inclusion of a distribution model in a complex modeling system for the initial design of heat transfer equipment, was the extremely long computational time. Analytical models appear to be a reasonable compromise between the accuracy of the flow distribution prediction and the computational times.
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The impact of HVAC systems on the acoustic microclimate of clean rooms
Jelínek, Ondřej ; Mathauserová, Zuzana (referee) ; Papež,, Karel (referee) ; Rubina, Aleš (advisor)
The work description is to create a system of measures to prevent the spread and the consequent attenuation of sound in air handling systems serving the cleanrooms. The thesis presents a solution to noise attenuation in the investigated area, and in HVAC duct, which uses a commercially available material in the form of sound insulation hoses. In the systém solution is part of the work focuses on the optimal design of terminal elements to distribute air in a clean room. Processing methods utilize theoretical and experimental approach. The experiment comprises a unique analysis of the sound insulation properties of selected products under specific conditions. The data obtained are analyzed and incorporated into the framework of this work created program module for determining the attenuation and noise propagation in an enclosed space. Math and physical dependence are programmed into their own DLL by programming language DELPHI.
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Comparison of Selected Methods of Valuation of Family Houses in Znojmo and its Affiliated Villages
Oremba, Lukáš ; Hrubanová, Michaela (referee) ; Hlavinková, Vítězslava (advisor)
Thesis, Comparison of selected methods of houses’ evaluation in Znojmo and associated communities, explains some of the currently used valuation methods. It also deals with comparison of prices which were determined by selected valuation methods. Those methods include cost approach, comparative method, the current price and the price of time. It accentuates the consideration of coefficient within connecting into utility networks – especially sewer. Then it focuses on ways of heating. The aim of this thesis is to find out how the aspect of connecting into utility networks is involved in methods of heating. For the evaluation there were selected 10 houses in Znojmo and associated communities.
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Distributed systems for cryptoanalysys
Zelinka, Miloslav ; Martinásek, Zdeněk (referee) ; Sobotka, Jiří (advisor)
This work deals with crytpoanalysis, calculation performance and its distribution. It describes the methods of distributing the calculation performance for the needs of crypto analysis. Further it focuses on other methods allowing the speed increasing in breaking the cryptographic algorithms especially by means of the hash functions. The work explains the relatively new term of cloud computing and its consecutive use in cryptography. The examples of its practical utilisation follow. Also this work deals with possibility how to use grid computing for needs of cryptoanalysis. At last part of this work is system design using „cloud computing“ for breaking access password.
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The Using Logistics in a Manufacturing Company
BODLÁKOVÁ, Alena
This bachelor thesis deals with using logistics in the brewery Městský pivovar PLATAN s. r. o. It reports on the present state of alcoholic and non-alcoholic drinks consumption in the Czech Republic. The consumption of non-alcoholic drinks and non-alcoholic beer has a significantly increasing trend. The largest part of alcoholic drink consumption in the Czech Republic is beer. The strategy of the brewery Platan is presented. The strategy should lead to maintain the sale position the company has reached. An analysis of competitive environment was performed for the investigation of market position of the company Platan. The study describes the material flow and information flow in the company as well. The material flow was described in terms of inputs, production, outputs and reverse logistics. The results of this study show that the gastronomy sphere customers have the widest requirements. Based on the questionnaire investigation, the standards in providing brewing services were compiled. Finally, the distribution services was examined and the possibility of using own transportation when compared to the outside forwarding agent services was explored.
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