|
|
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.
|
|
|
Complex analysis of the performance of a U-type distribution system
Sýs, Tomáš ; Strouhal, Jiří (referee) ; Babička Fialová, Dominika (advisor)
Fluid flow maldistribution plays a key role in equipment used in process and energy industries, although its evaluation is often underestimated or fully neglected. Uneven flow distribution may cause thermal or mechanical load on the tube bundle, and in extreme scenarios, it can also have an adverse effect on the process efficiency. This thesis aims to find the optimal computational tools for flow distribution prediction suitable for the initial stage of the equipment design process and to identify suitable settings of these tools for their subsequent industrial deployment. The results of simplified analytical models, detailed numerical simulations, and experimental measurements were compared for the dividing header and the U-type distribution system. It was found that the results provided by simplified mathematical models, the solution of which is also significantly less time-consuming compared to detailed CFD simulations, best correspond to the measured experimental values in all modeled configurations. For arrangements with higher lateral resistance coefficient, both computational approaches provide approximately equally accurate results. However, for arrangements with lower lateral resistance coefficient, the deviation of the results obtained by CFD calculations from the experimental data is significantly larger.
|
|
|
Complex analysis of the performance of a U-type distribution system
Sýs, Tomáš ; Strouhal, Jiří (referee) ; Babička Fialová, Dominika (advisor)
Fluid flow maldistribution plays a key role in equipment used in process and energy industries, although its evaluation is often underestimated or fully neglected. Uneven flow distribution may cause thermal or mechanical load on the tube bundle, and in extreme scenarios, it can also have an adverse effect on the process efficiency. This thesis aims to find the optimal computational tools for flow distribution prediction suitable for the initial stage of the equipment design process and to identify suitable settings of these tools for their subsequent industrial deployment. The results of simplified analytical models, detailed numerical simulations, and experimental measurements were compared for the dividing header and the U-type distribution system. It was found that the results provided by simplified mathematical models, the solution of which is also significantly less time-consuming compared to detailed CFD simulations, best correspond to the measured experimental values in all modeled configurations. For arrangements with higher lateral resistance coefficient, both computational approaches provide approximately equally accurate results. However, for arrangements with lower lateral resistance coefficient, the deviation of the results obtained by CFD calculations from the experimental data is significantly larger.
|
|
|
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.
|
|
|
Creation and management of marketing distribution channels
MRKÁČKOVÁ, Bohdana
This thesis is focused on creating and managing marketing distribution channels in terms of a particular enterprise. The basic concept for this thesis is marketing, from which further depends on other important concepts. The aim is to assess the current creation and management of marketing distribution channels in the selected company. Based on the analysis to propose appropriate measures for improvement. For these purposes, was chosen production company that specializes in the manufacture of doors and door frames.
|
|
|
Distribution of chosen French products on the Czech market
CHLUPOVÁ, Tereza
This bachelor work aims to evaluate the distribution of chosen French products to the Czech market and uncovering the possibilities how to increase their marketability. The whole work consists of theoretical and practical part. The theoretical part gives an explanation of the basic terms of the marketing field which are important for the clarification of the issue of this work. It is focused on the characteristics of markets and their classification at the market of organizations and the market of a final consommateur. It explains the importance of the value for a final customer and it tries to describe the purchase behaviour of organizations and of the final consommateur. This part contains a brief presentation of market analysis and methods how to find out data and information. It deals in detail with the distribution which represents for each company a complex and an exacting process of shipping their products to the final consumer. The practical part is based on an analysis of the sales activities of the company Anglo Czech Ltd. It is concerned with the characteristics and development of French company called Prodifa, which is specialized in the manufacture of perfume atomizers and their charges and afterwards in their sale to distribution companies. This part gives a description of development and characteristics of Czech distribution company Anglo Czech Ltd., which is purchaser of several products of the French company. The work is devoted to the history of cooperation between these two companies and current methods of selling of French products on the Czech market. Also it tries to uncover new opportunities how to increase their marketability.
|
|
| |
|
| |
|
|
Multi-tier system of distribution of audiovisual content
Pulda, Michal ; Donát, Jiří (advisor) ; Mildeová, Stanislava (referee)
This paper analyzes and critically evaluates present music and video market functioning with emphasis to the sales of electronic format of this content which is preferred by current customers. It analyzes the widespread trend of content sharing via the Internet and specifies reasons why the trend is happening. It defines cases of behavior that are justifiable in the eyes of consumers and therefore legitimate (i.e. creation of backups, downloading and sharing legally unavailable content, downloading for personal use, etc.) and elements that reduce value of the legally distributed content for the customer (copy protection mechanisms or current licensing system). Furthermore, it analyzes new economic approaches that enable the utilization potential of the Internet (i.e. the Long Tail Theory) or of potential customers (Crowdsourcing, Word of Mouth, Gamification). The paper analyzes the functioning new services that use the Internet as a platform for their operation and offer users the experience they want. Proposal for this new system of audiovisual content distribution is proposed based on a synthesis of findings from the operation of these services, new theoretical approaches and author's own contribution. This new system rejects the idea of selling the content as goods (per items) and adopts an approach of access to the whole catalogue of content for a flat monthly fee. This newly born service has several tiers that differ qualitatively among themselves, also in terms of added value for users and finally in the price at which the layers are available. This system is very acceptable to customers as well as being an interesting long-term alternative to the current system for operators of the new system and copyright holders.
|
|
| |
guest ::
