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Design of heating system for family house
Houzar, Filip ; Elbl, Patrik (referee) ; Lachman, Jakub (advisor)
This bachelor thesis deals with ways of family house heating. This thesis aimed to choose a suitable heating system for a specific family house. The first part of the thesis deals with a search of commonly used heat sources. This part contains a description of the work of these heat sources and their pros and cons. The following part introduces a specific family house, and the calculation of heat loss and annual heat consumption is performed. Then, three proposals are selected, for which the costs of their operation and return are calculated. At the end of the thesis, the proposals are compared and evaluated from an economic point of view. Based on this comparison, the most suitable proposals are selected, and the conclusions are commented on.
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Waste Gasification
Sedláček, Tomáš ; Elbl, Patrik (referee) ; Lachman, Jakub (advisor)
The bachelor’s thesis deals with the topic of waste gasification. The first part includes the definition of waste with the focus on municipal solid waste, its evaluation as fuel on the basis of its contents and properties, in this case the heating value. Eventually the waste is compared with other normally used solid fuels. The second part presents and describes the thermal processes applied to waste-to-energy technologies, where the gasification is explained in more detail, its final products, the content of contaminants in these products and their removal. The next part deals with technologies used for waste gasification. The last part deals with the issue of waste gasification in the Czech republic.
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Waste-to-Energy in the Czech Republic
Rajkovič, Jaroslav ; Toman, Filip (referee) ; Lachman, Jakub (advisor)
This bachelor’s thesis is focused on Waste-to-Energy process of municipal waste in the Czech republic. It describes production of municipal waste in the Czech republic, influence of waste composition on burning process and principle of incineration technology. The largest attention is paid to current Waste-to-Energy plants in the Czech republic and new planned projects. Last part of the thesis evaluates fulfilment of Waste management plan of the Czech republic goals.
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Design of heat pump
Daxner, Ján ; Lachman, Jakub (referee) ; Toman, Filip (advisor)
The aim of this thesis is to design the main components of the heat pump on the basis of specified parameters. The first theoretical part is an introduction to the problem of heat pumps. It describes types of heat pumps, energy sources and their advantages and disadvantages. In the second calculation part, the calculation was performed according to the entered parameters on the basis of which the heat pump components were suitably selected.
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Design of heat source for heating a family house
Kotráš, Pavel ; Lachman, Jakub (referee) ; Baláš, Marek (advisor)
The main aim of this bachelor thesis is a proposal of a heat source for a specific house. The first part is a research of different heating technology. In the second part there is a shortlisting of heat sources for this specific house and then calculating of costs for the selected heating sources. These costs are calculated from heat losses of the object. After the economic comparison one source is selected, from which costs of heating are calculated with three versions of possible insulation of this house.
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Effect of sample treatment on biofuel characteristics
Zlevorová, Tereza ; Lachman, Jakub (referee) ; Lisá, Hana (advisor)
The subject of this bachelor thesis is experimental solution of the problem focused on the effect of sample treatment on bioful characteristics. The theoretical introduction includes biofuel classification, explanation of each biofuels‘ trait and description of methods used to their determination. It continues with sample preparation with broader focus on milling. The following experimental part examines basic traits of four materials before and after milling on high-speed rotor mill using multiple sieves of varying fineness. The traits were determined using normalised methods. For determination of moisture had been selected gravimetric method. In this thesis, there is described every procedure and following calculations. The results are stated in tables and processed in graphs.
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Methods of Determination of Moisture Content
Bezdíček, Jiří ; Lachman, Jakub (referee) ; Lisá, Hana (advisor)
With the growing interest in the energy use of biomass in the form of solid biofuels, the requirements for determining the moisture content of these fuels are also growing. Moisture is an important factor not only in the production of biofuels, where the moisture values must be ideal, eg in the production of pellets, but also in storage and other processes. The aim of the work was to determine the suitability of methods for determining moisture for various types of solid biofuels. The main subject of interest was fuels with grain structure. A search of the basic distribution of fuels and introduced and new methods for determining moisture was performed. The research was focused on oven drying methods. The result is the determination of the unsuitability of the method of drying scales for fuels with grain structure, the suitability of all investigated methods for wood fuels, the accuracy of the reference method for most fuels and the susceptibility of the analytical method to the homogeneity of the test portion.
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Grate RDF Boiler
Lachman, Jakub ; Šilhavý, Karel (referee) ; Lisý, Martin (advisor)
The master’s thesis deals with the design of a boiler for RDF combustion, based on the required power output and superheated steam parameters. The first part of the thesis focuses on combustion calculations. Boiler efficiency is also calculated in this chapter, using the heat balance efficiency method. The main part of the thesis consists of dimensional design and heat transfer calculations. The precision of the calculations is checked at the end of the thesis along with the chlorine corrosion, which is considered because of the higher amount of chlorine in the fuel. The thesis comes with a basic schematic of the designed boiler.
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Energy use of waste
Lachman, Jakub ; Kracík, Petr (referee) ; Baláš, Marek (advisor)
The bachelor’s thesis deals with the Waste-to-Energy topic. The first part evaluates municipal solid waste (MSW) as fuel, analyzes the influence of its indiviual fractions on the overal properties, mainly the lower heating value, compares MSW with other conventional solid fuels which are thermally used. The second part of the thesis deals with Waste-to-Energy technologies. It is divided into three parts: combustion, pyrolysis and gasification. Each contains both the description of the process itself as well as the description of the applied technology. The last chapter contains some of the negative impacts of Waste-to-Energy technologies and a list of measures used to deal with them.
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