|
|
Design of a mechanism for adaptive distribution of plants in hydroponic cultivation
Lupínek, Antonín ; Lošák, Pavel (referee) ; Naď, Martin (advisor)
This thesis addresses the issue of energy consumption n the field of increasingly popular hydroponic cultivation technology and its possible reduction with the help of movement mechanism. The mechanism in question adjusts the distances between plants in order to reduce the number of active artificial lights at different stages of plant growth. In order to achieve this goal, several movement mechanisms were proposed using the theoretical knowledge obtained in the first part of the thesis, from which a mechanism for the movement of the traverses with the plants along the channel of the NFT system, realized with the help of an electric motor and a set of pulleys, was subsequently selected. This mechanism was subsequently modelled in detail and used for the development of the motion study.
|
|
|
Photobioreactor for cultivating Spirulina
Tomandl, Jiří ; Naď, Martin (referee) ; Lošák, Pavel (advisor)
This bachelor thesis addresses the issue of microalgae cultivation, specifically focusing on Spirulina, with the aim of designing a device for its efficient cultivation to produce fresh biomass intended for consumption. Spirulina is characterized by its high content of proteins, minerals, and antioxidants, making it known as a dietary supplement with numerous benefits. The thesis includes the design of a photobioreactor for home cultivation of Spirulina, considering efficiency, simplicity, and economic affordability. The work includes literature review, technical documentation, prototype construction, economic evaluation of the device and operational costs. The proposed photobioreactor enables the production of fresh spirulina at low cost, thus contributing to the wider availability of fresh spirulina to the general consumer. The proposed solution has the potential to increase awareness of the ecological and nutritional benefits of spirulina and to promote its use in households.
|
|
|
Stress analysis of pressure vessel
Šperka, Václav ; Lošák, Pavel (referee) ; Nekvasil, Richard (advisor)
Pressure vessels occupy very important place in many industrial sectors thanks to their purpose and application. For construction and design itis required high safety and reliability of pressure vessels, mainly in use e.g. innuclear poverplants. Bachelor thesis is focused on stress analysis using finite element method; cathegorization of stress and evaluation of selected parts for fatigue.
|
|
|
Design of heat exchanger after ČSN EN 13 445
Lošák, Pavel ; Vincour, Dušan (referee) ; Vincour, Dušan (referee) ; Nekvasil, Richard (advisor)
Diploma thesis is fucused on strength calculation of the heat exchanger according to ČSN EN 13 445. Introductory part introduce problems with the design of heat exchangers. In other parts there are a strength calculation of the heat exchanger according to ČSN EN 13 445, the results of the analysis with their appreciation. Annexes included output logs from the program Sant 'Ambrogio, and drawings documentation.
|
|
|
Software comparison for design and control of pressure vessels
Staňková, Lucie ; Pernica, Marek (referee) ; Lošák, Pavel (advisor)
The main goal of this thesis is to compare different software for pressure vessels design and control. This comparison is done by designing a given pressure vessel, specifically a heat exchanger. The heat exchanger is designed in software Sant’Ambrogio, Visual Vessel Design and PV Elite. Advantages and disadvantages of used software are discussed. Thesis evaluates various aspects of design, particularly graphic interfaces, user-friendliness, clarity and calculated results. The results for the cylindrical shell and the torispherical end of each software are analysed and compared to own calculations based on ČSN EN 13445 design code. Differences among results are explained. Thesis also contains the literature search report of pressure vessels design.
|
|
|
Design and evaluation of process equipment damaged by degradation mechanisms
Cablková, Zuzana ; Naď, Martin (referee) ; Lošák, Pavel (advisor)
This bachelor thesis is aimed at the evaluation of selected degradation mechanisms which occurs in process equipment. The assessment is undoubtedly important in terms of safety and prediction of residual life. This issue is demonstrated by two mechanisms described in this thesis. A phenomenon called creep is the first of these mechanisms and appears in environments with elevated temperature. The theoretical part of the thesis covers the basic principles of the creep mechanism and its effect on the material. A marginal but not negligible problem is the occurrence of this damage in welded joints. Many standards deal with the prediction and assessment of creep. Part of this thesis is the mapping and to some extent a comparison of several selected procedures. The second degradation mechanism is related to the presence of aggressive compounds such as sulfide. This can lead to hydrogen embrittlement, blisters, and many other damages. As with creep, an overview of standards devoted to the design, evaluation, or maintenance of equipment used in this way is created for these mechanisms. The content of the practical part of this thesis is the calculation of the evaluation of such a device by using the procedures of the API 579-1 standard.
|
|
|
Flange design software according to ČSN EN 13445
Schütz, Stanislav ; Lošák, Pavel (referee) ; Létal, Tomáš (advisor)
The goal of this work is to create a simple portable software for stress analysis of gasketed flange connections according to ČSN EN 13445 - Unfired pressure vessels. The programming language Python was chosen for the programming and the program was created in IDE called Eclipse. The thesis includes: literature search in order to get some insight into the theme of stress calculations of flanges, a description of the strength calculation according to the Standard mentioned above and a description of the created program including its debugging. The main output is software called Imhotep. It comes in two forms – as a module executable via Python and a portable .exe version.
|
|
|
Structural design of the high-pressure separator with focus on the flange connection
Šmarda, Radek ; Klučka, Ivan (referee) ; Lošák, Pavel (advisor)
The first part of the diploma thesis deals with research in the field of design of process apparatuses. The research continues describing the function, division and main parts of separators. The research part ends with a more detail overview of flange connections. The second part deals with the design and control calculations of the separator using ČSN EN 13445-3 with tightness-strength calculation of the main flange join using ČSN EN 1591-1. At the end of the second part, partial calculations are performed using finite element method in the ANSYS Workbench R2 program, which aim to verify the required tightness of the joint and describe the effect of the bolts tightening procedure on the gasket.
|
|
|
Complex strength design of condenser
Denk, Jakub ; Naď, Martin (referee) ; Lošák, Pavel (advisor)
This diploma thesis focuses on strength design of steam condenser. The goal of the thesis is to make strength calculations for the specific operation conditions, introduce possible solutions, provide recommendations and refer to weak points of such calculation procedures. First, thermal-hydraulic design in HTRI software is performed. Strength calculations respect ČSN EN 13445 standard. Strength calculation with imported temperature field is performed in ANSYS Workbench software. In the next step, another strength calculation is realized in Sant´ Ambrogio software. Results are evaluated in conclusion chapter, including recommendations for the possible following work.
|
|
|
Design of storage tank
Jahodová, Miroslava ; Lošák, Pavel (referee) ; Létal, Tomáš (advisor)
Subject of this bachelor thesis is a structural design of a vertical cylindrical storage tank with fixed roof. In the first part, basic types of storage tanks are described, followed by various approaches to structural design of a vertical cylindrical storage tank. Second part includes design calculations of the vertical cylindrical storage tank according to the standard ČSN EN 1993-4-2 as well as stress analysis using finite element method.
|
guest ::
RSS feed.