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Application of recent methods for synthesis of heat exchanger network
Kunc, Vlastimil ; Kohoutek, Josef (referee) ; Jegla, Zdeněk (advisor)
Master’s thesis deals with the problems of heat exchanger network synthesis and compare the present methods with emphasis on Pinch Design Method and deterministic method. Based on theoretical formulation of deterministic model the computer program for heat exchanger network synthesis was developed in the software Maple environment. Developed software implementation of deterministic method has been applied to several case studies.
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Calculation algorithms for thermal-hydraulic design and rating of unconventional heat transfer equipment
Mikeška, Petr ; Kohoutek, Josef (referee) ; Jegla, Zdeněk (advisor)
The aim of diploma thesis is creating calculation algorithms off single types unconventional heat transfer equipment and their aplication in thermal - hydraulic calculations in the industrial aplication . The main attention is paid to shell and tube heat exchangers with ROD and disc baffle system and radiation heat exchanger. All of these exchangers are used mainly in process of waste thermic destruction. The theoretical part of the work describes construction details of each heat exchanger and calculation algorithms of these equipments. The practical part of the work applies theoretic calculation alghortims in the industrial aplication which is design and rating. In the final part advantages and disadvantages of results have been assessed for construction and process aspects.
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Simplified Basic Engineering Project of Distillation Unit
Šmarda, Michael ; Kohoutek, Josef (referee) ; Lenfeld, Petr (advisor)
The target of diploma thesis was to improve author’s theoretical and practical design knowledge of process engineering. In the diploma thesis a Simplified Basic Engineering Project of distillation unit has been developed. It was necessary to become familiar with the process technology and formal requirements of Basic Engineering Project. The most important parts of Basic Engineering Project are material and heat balances. Material and heat balances are the corner stones of distillation unit equipment design. Parameters of process equipment are presented in the form of equipment datasheets. The specification of pipelines is based on material and heat balances too. Inevitable part of Basic Engineering are Process Flow Diagram and Piping and Instrumentation Diagram (PFD & PID). Process Flow Diagram and Piping and Instrumentation Diagram include all equipment, piping and basic control loops.
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Design of communication network at a company headquarter
Kohoutek, Jan ; Sedlák, Petr (referee) ; Novotný, Vít (advisor)
The bachelor's thesis focuses on the design of a communication infrastructure project for a company building. There are production, storage and administrative premises, including Open Office space for rent. The basic documents for the work are the requirements of the investor and the floor plans of individual parts of the building. The result is an analysis, a proposal for the selection of individual components of the communication infrastructure, project documentation and, at the very end, an economic evaluation.
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Location Estimation of Objects in WiFi Communication Network
Kohoutek, Jan ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
The purpose of the thesis is to design and physically implement a system for location of devices in a Wi-Fi based networks deployed in the interior of small and medium-sized enterprises. First of all, the attention is given to the survey of commonly available technologies suitable for determination of the object position. Then, based on these findings, architecture of a location system comprising an array of sensor nodes and central processing unit is proposed. In conclusion, the results are presented and the fulfillment of the requirements is evaluated.
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Modelling of fouling and its influence on technical-economic characteristics of tubular heat transfer equipment in units for thermal processing of wastes
Keliš, Michal ; Kohoutek, Josef (referee) ; Jegla, Zdeněk (advisor)
The main subject of this study is the improvement of predicative ability of previously developed mathematical model for prediction of so-called “fouling critical velocity”. Attention is devoted especially to the flue gas side fouling process on active heat transfer surfaces in tubular heat exchange tube banks installed in waste incineration process plants and also a technical – economic analysis based on obtained results. The model improvement consists among others in taking into account another forces (electrostatic, capillary etc.) haven't yet been considered, which influence the mutual contact between flue gas particles in case of sedimentation fouling or the contact between particles and heat exchanger tube walls respectively. The improved model has therefore more predicative ability to the reality of fouling process. The results are used for technical – economic analysis, which determines an optimal heat exchanger design with respect to fouling. Furthermore, the algorithm of this analysis, essential fouling mechanisms, fouled heat exchanger surface cleaning methods as well as fundamental knowledge of fouling coefficient prediction are presented, whereas the emphasis is placed on industrial tubular heat exchange equipment installed in waste incineration process plants.
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Selection of suitable fluid flow directions in laminar flow tubular cooler
Krobot, David ; Kohoutek, Josef (referee) ; Jegla, Zdeněk (advisor)
This master’s thesis is devoted to problematic of selection of suitable flow directions in double pipe heat exchanger. First chapter is oriented to the construction of tube heat exchangers. It is also discussed impact of construction solution to the flow character and changing of his process parameters. The difference between parallel and countercurrent flow is also occurred in this parts. The next chapter is focused to the basics of heat-hydraulic calculations of heat exchanger. This also means explanation of ways of heat transfer and heat exchanger function. There are told about specific access to the solving problem of fluid laminar flow. The third chapter is detailed focused to the calculating of heat exchanger. At first is discussed factors, which have impact to the flow character. Next are detailed descriptions of design and controlling calculations, including more alternative ways to solve it. Next chapter exploit those results for deciding, which flow arrangement will be better for given case. Last chapter contain realization and reformulating of process heat exchanger calculating to the program code in Maple. There is also description of used algorithms and operating with them, so any user could be able to work with it. In this master’s thesis are used many examples from attached programs on different parts.
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