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Strength calculation of heat exchanger tubesheet with focusing on economic evaluation
Horniak, Patrik ; Vincour, Dušan (referee) ; Buzík, Jiří (advisor)
This bachelor thesis is focused on strength design of assigned shell-and-tube heat exchanger. This heat exchanger have fixed tube sheets and straight tubes. Designed tube sheet is integrated with shell and flanged to the channel. First part of the thesis serves as introduction on the issue of heat exchangers and tube sheets. Following chapters are dedicated to the strength design of tube sheet thickness based on the ČSN EN 13 445 standard. These chapters are dealing with input parameters, basic requirements of calculation, equations essential for calculation of stress in heat exchanger and analysis of stresses in heat exchanger with the use of proper strength conditions. Conclusion of these chapters is evaluation of calculated results from personal scipt written in Python language using Spyder environment. Correctness of these results is ensured by their comparison with the output of Visual Vessel Design (VVD) program. Final part of the thesis is economic evaluation of whole tube sheet design based on possibility of choosing different analyzed material.
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Proposal of Marketing Plan and its Economical Evaluation
Tomečková, Michaela ; Šmýdová, Martina (referee) ; Kaňovská, Lucie (advisor)
The main subject of this bachelor thesis is to create a marketing plan proposal for Maralex trade s. r. o. and subsequent implementation of these marketing stategies in the management of the company including economic evaluation of the situation. This company sells humorous gifts especially through the online store DárkyHry.cz The first part focuses on the theory of marketing planning. In the second part, attention is paid to the company and its desription. Subsequently, in the practical part is to analyze current situation of company and a formulating a marketing plan. Conclusion of the work will be devoted to my own designs solutions and economic evaluation.
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Proposal of Marketing Plan and its Economical Evaluation
Tomečková, Michaela ; Dohnalová, Anna-Marie (referee) ; Kaňovská, Lucie (advisor)
The main subject of this bachelor thesis is to create a marketing plan proposal for Maralex trade s. r. o. and subsequent implementation of these marketing stategies in the management of the company including economic evaluation of the situation. This company sells humorous gifts especially through the online store DárkyHry.cz The first part focuses on the theory of marketing planning. In the second part, attention is paid to the company and its desription. Subsequently, in the practical part is to analyze current situation of company and a formulating a marketing plan. Conclusion of the work will be devoted to my own designs solutions and economic evaluation.
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Design and comparison of a space heating systems with different heat sources in family house
Kamenský, Petr ; Elcner, Jakub (referee) ; Katolický, Jaroslav (advisor)
Diploma thesis deals with design and comparison of heating systems. In diploma thesis is designed system with gas condensing boiler, system with heat pump and system with gas condensing boiler for heating and solar collectors for heating of hot water. Content of this thesis is calculation of house heat loss, design of radiators, design of heat systems including a check of protective components, regulation with the help of thermostatic radiator valve, calculation of economical evaluation and creation of design documentation. Design is made for systems with unified temperature fall 55/45. For the variation with heat pump is computed a possibility of using the heat pump as an univalent or bivalent heat source. In the analysis of costs is considered a usage of natural gas for heating and warming of hot water with a condensing boiler, annual consumption of electric energy for operation of electrical appliances in household, consumption of electric energy for operation of heat pump for heating and warming of hot water and consumption of electric energy for warming of hot water in case of system with solar collectors. In the final evaluation a pay-off period is determined.
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Suggestions for improvement in long-termed material property economy
Navrátil, Tomáš ; Kotík, Vladislav (referee) ; Mikulec, Luděk (advisor)
This work solves the problems with taking care of capital goods in the firm Komponenty, a. s. The work is elaborated from the analysis of present situation in the firm, the heed is oriented to the most important areas, especially the organisation and maintenance activity and taking care of assets. The result of the performed analysis is identification of bad spots. Proposal is submitted in the second part of the work in order to solve the problems found by performing the work. At the end economical evaluation of the proposal and statement of assumptions for the applications of the extended work result to firm use is performed.
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Design of an extraction steam condensing turbine in the Precheza company.
Pavelka, Tomáš ; Paseka, Bohumil (referee) ; Bok, Jaromír (advisor)
This diploma thesis is concerned with the design of the machinery with an extraction steam condensing turbine in Precheza corp. The theoretical part of this thesis describes the energetical situation in the company and the primary consideration about recovery of the heat, released at sulphuric acid production, for electrical power production. There is also presented brief description of the sulphuric acid production and the fundamental principles of the steam production at this process. In the practical part of this thesis there is performed the calculation of the heat-flow diagram of the steam turbine and the calculation of heat and producted electrical power at the basic operational states. There is presented the source code for the calculation of the heat-flow diagram using Matlab software. In the end there is mentioned the economical evaluation of the whole project, using the fundamental economical methods, such as net present value method, or profitability index, including the calculation of the pay-back period.
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Power production in cogeneration units
Šaroun, Josef ; Vašek,, Vladimír (referee) ; Caha, Tomáš (advisor)
The aim of this thesis is the technical-economic evaluation of the advantages of combined pruduction of electrical and thermal energy, depending on the current offer price of feed, bonuses and allowances.. There are described co-generational technologies and used for units with performance up to 500 kWe. There are discussed in detail cogeneration units based on reciprocating internal combustion engines. The thesis contents evaluation of various modes of operation of co-generation unit, depanding on the results is chosen the most suitable mode. Daily yield was calculated in relation with prices paid for commodities and service. Co-generational contribution were considered as well as contribution for decentralized production of electricity. From the operational and economical point of view the most effective mode of running the co-generation unit is 12 hours mode. The economical evaluation of input was made. If the operational mode of the unit would follow the suggested mode, the financial return of input would be in two years. With the correct operation the co-generation unit would generate the income about 21,8 mil. CZK.
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Economical evaluation of investments and risk analysis in real enterprise
Götz, Miroslav ; Fotr, Jiří (advisor) ; Špaček, Miroslav (referee)
The aim of the work is to introduce various ways of economical evaluation of investments and present their practical application for industry branch of electrical devices. The work is divided into two parts: theoretical and practical one. The introductory part presents framework of economical evaluation and describes basics of economical evaluation and terms such as NPV, discount rate, investment decision) The work focuses on the most favorite approach -- discounted cash flow method - of economical evaluation of investments in detail. However, practical experiences show that conventional approach does not take probability distributions of input variables into account. When the higher risk is implied to discount rate, promising project could be rejected. That is why DCF concept is complemented by Monte Carlo risk modeling application.
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Economical and environmental aspects of biogas station in Drahobudice
Pudilová, Pavlína ; Dvořák, Antonín (advisor) ; Hadrabová, Alena (referee)
The topic of my master thesis is analysis of farm biogas station in Drahobudice. It is machinery, which processes agriculture crops and garbage from animal produce. From these substrates is produced biogas and burning of this biogas arises electric and thermal energy. This system of production from renewable resources is in accordance with demands of European union on reducing emissions from burning fossil fuels. This thesis contains overview of legislation relevant to given issue, describes development of this project, technical solution and process of operation. A part of this work also covers analysis of economic efficiency this investment and considers effects on environment. The main objective of my thesis is to identify, analyze and evaluate economical and environmental aspects of biogas station in Drahobudice.
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Analysis of biodegradable communal waste disposal system in the city of Zlín
Přikrylová, Jana ; Dvořák, Antonín (advisor) ; Hadrabová, Alena (referee)
This thesis discusses the disposal of the biodegradable communal waste (hereinafter BRKO) in the city of Zlín. In the beginning it introduces the general terms and keywords and legal regulations concerning waste disposal. It mentions environmental effects of the BRKO dump, and also ways of collecting and further treatment of BRKO. The main part of the thesis describes the current BRKO management system in the city of Zlín and based on the projects that have been completed up until now it analyses management efficiency. The thesis shows an expected progression in the total amount of BRKO in the following years due to the new limits placed on BRKO dump by the Plan of Waste Management Program. Based on the collected data, this thesis proposes an optimal solution for waste collection and waste treatment in the city of Zlín and evaluates the environmental and economic benefits of the suggested waste management system.
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