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Process computer simulation
Čech, Michal ; Pavlas, Martin (referee) ; Touš, Michal (advisor)
The thesis deals with computer simulation of processes, which is crucial in the field of process engineering. In the first part, the methodology of modeling and simulation techniques is described as well as mass and energy balances. Specific approaches to process simulation are included. The thesis offers a list of the most often used simulation programs and their typical structure. Sequential modular and equation-based simulation is demonstrated on an example. The results are then verified by simulation software W2E.
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Boilers with medium capacity for biomass combustion of czech and foreign production
Habán, Tomáš ; Kropáč, Jiří (referee) ; Pavlas, Martin (advisor)
The main objective of this work is to focus on biomass as one of the components of renewable energy sources for the production of thermal energy by combustion. The introduction of work maps the current state of biomass used in the Czech Republic. It evaluates options for future uses for biomass and also the size of the potential in the natural conditions of the Czech Republic. It also views this renewable resource from the point of view of energy conception and evaluace the government positron on this issue. Next part deals with the combustion of biomass and with the use of created thermal energy. It ruminate a problem of pollutants and shows values for emission limits results from the legislation. It shows ways of using this thermal energy and the associated production of electrical energy including an overview of the possibilities of its evaluation. The last part of this work describes a comparison between biomass boilers from Czech and foreign producers in the range of rated output 1 to 3 MW. It divides boilers in terms of legislation and shows the obligations and conditions attached to the operators of biomass boilers. It outlines the biggest application of boilers with medium capacity for biomass combustion in the Czech Republic.
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Renewable energy and energy savings
Veselský, Josef ; Kropáč, Jiří (referee) ; Pavlas, Martin (advisor)
This work focouses on waste to energy. In the introductory part a reviw of state-of-the art in waste in CR, legilation of waste in CR, possibilities waste to energy.In waste incineration plant. In conclusion, this work is evaluating the effectiveness of the production of energy waste incineration plant.
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Potential of biomass resources in CZE and costs of its energy utilisation - II
Štěrba, Martin ; Pavlas, Martin (referee) ; Máša, Vítězslav (advisor)
In recent years, we are more and more confronted with the concepts of bio-energy, biomass or biofuels. In conjunction with the increasing pressure on the use of these commodities thein demand is increased. Crops for the purpose of energy production may be an important renewable source of energy and are the primary topic of the work submitted. Introductory chapter provides distribution, characteristics, list of representatives of crops and ways of energy utilisation the crops. Is folloved by an introduction to the legislation dealing with energy crops. The market for biofuels is still in its infancy, and therefore the work submitted presents only general view of the current status of the production and use in the Czech Republic and potential prospects. Interesting is also the position of farmers and the issue of competitiveness. These areas are collectively analyzed in the final chapters.
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Biomass in heating systems of cities and villages - II
Tomšů, Ondřej ; Pavlas, Martin (referee) ; Máša, Vítězslav (advisor)
The work deals with district heating systems in towns and villages. It presents the heating supply system, features the history of district heating in the Czech Republic, divided into several characteristic periods and future outlook. The next chapter deals with the division and a description of heat sources. There are statistics shown in the use of district heating systems in the Czech Republic and European countries. A large part of the work is devoted to fuels used in heat sources and their distribution. The main emphasis is put on biomass, there are described all the important parameters, and its species, methods of processing and utilization for getting the heat. The work is concerned with cogeneration technology, which uses the joint production of heat and electricity, there are listed its main advantages and described trigeneration technology. The final part is devoted to the financial aspect of district heating systems. There are listed examples of effective projects, given the example of heat station with a very short period of return of investment and a final assessment of the economic and technological performance of new and existing district heating systems.
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Effective use of 3D Cad systems in the field of process engineering-I
Dítě, Jan ; Dvořák, Radek (referee) ; Pavlas, Martin (advisor)
This work is focused on effecitive use of 3D CAD systems in process and environmetal engineering. The system SolidWorks 2006 is applied. The purpose of this work is to describe creation of basic parts, assemblies and drawings in general way. Special attention is paid on the program unit Routing dedicated for piping system design. The work next describes the importace of reference items required and problems associated with routing subassembly.
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Biomass in heating systems of cities and villages - I
Soudek, Ondřej ; Pavlas, Martin (referee) ; Máša, Vítězslav (advisor)
Point of this bachelor’s thesis is in acquainting with district heating problems. Emphases is posed for a technologic items of this system. Present trend is the cause of dissemination of biomass utilization in district heating over liberal possibility of distribution of heating. So bachelor’s thesis deal with vignette common fossil fuel. A new district heating system realization visualize extensive project and include project of thermal source, junction exchange station and heat distribution.
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The environmental aspects of biomass boilers operation
Slavíček, Martin ; Urban, Lukáš (referee) ; Pavlas, Martin (advisor)
The content of this thesis focuses on the subject of biomass usage for energetic purposes. The introduction deals with the renewable energetic resources and their utilization and utilization of the biomass as a fuel, its division and characteristics. The following part deals with the legislation in the Czech Republic for the machinery used for combustion of biomass and its standards. Examples of different technology used in boilers and generators for biomass is mentioned as well. Then the biomass emissions with their specific values are discussed.
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Effective use of 3D Cad systems in the field of process engineering-II
Marek, Tomáš ; Dvořák, Radek (referee) ; Pavlas, Martin (advisor)
The aim of this work was adoption and description of correct technigues of creation basic mechanical components under CAD system SolidWorks. This gained know ledge was then used for creation of library of standard parts used in process engineering with focus on design of pipeline systems. Conceretaly, the assembly of flouged circular Y-branch for duct system was solved. The possibility for its further modification of dimension as well as transformation into parts of similar shape was analysed. Finally, user manual describing the user interface and necessary design procedures was prepared.
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