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Steam boiler for fytomass
Rotrekl, Jan ; Ing.Pavel Křemínský (referee) ; Skála, Zdeněk (advisor)
This diploma thesis deals with a design of a boiler for stillage combustion. Stoichiometric calculations and enthalpies of combustion gases have been calculated from the specified parameters. In addition, heat calculation, design of the combustion chamber dimensions and dimensioning of heat surfaces were accomplished. The boiler has an evaporator with natural circulation and a fire grate.
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Study of Impurities and their Effect on the Physico-Chemical Properties of Ionic Liquids.
Rotrekl, Jan
The primary aim of the present study is to characterize thermophysically three novel ionic liquids 1-(2-(2ethoxyethoxy)ethyl)-3-alkylimidazolium with the bistriflate anion, where the alkyl stands for pentyl, isopentyl or neopentyl. For this purpose thermodynamic and transport properties such as density, heat capacity, electrical conductivity, and viscosity are studied.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22016053109240 - PDF
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Steam boiler for fytomass
Rotrekl, Jan ; Ing.Pavel Křemínský (referee) ; Skála, Zdeněk (advisor)
This diploma thesis deals with a design of a boiler for stillage combustion. Stoichiometric calculations and enthalpies of combustion gases have been calculated from the specified parameters. In addition, heat calculation, design of the combustion chamber dimensions and dimensioning of heat surfaces were accomplished. The boiler has an evaporator with natural circulation and a fire grate.
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Influence of Structure of Ionic Liquids on the Properties of their Mixtures with Water
Rotrekl, Jan
This contribution reports on a part of the results of a project focused on imidazolium-based ILs with a bis{(trifluoromethyl)sulfonyl}imide anion. The choice of the studied ILs is motivated by a study of the influence of the cation structure on the physico-chemical properties of pure ionic liquids and their mixtures with molecular solvents. For this purpose, four isomeric ILs, namely 1-alkyl-3-butylimidazolium bis{(trifluoromethyl) sulfonyl}imides (abbreviated [C4xC5im][Tf2N], alkyl = pentyl, isopentyl, 3-pentyl, or cyclopentyl) were selected. In a previous work, fundamental physico-chemical properties such as density, isobaric heat capacity, viscosity, electrical conductivity were measured.2 In this part of the study, the properties of the studied range of ILs in systems with water were investigated.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22015061709371 - PDF
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An aristocratic art patronage in the second half of the 19th century (Aristocracy in the Association of fine arts and the Society of the patriotic friends of arts)
ROTREKL, Jan
The dissertation inquires into the participation of the historic aristocracy in the agency of the Society of the patriotic friends of arts and the Association of fine arts. On the basis of an analysis of the annual reports of both of the institutions a survey of selected aristocratic contributors and donators of works of art will be made. In addition to this, the dissertation focuses on several of the more or less noted aristocratic members of the named institutions. In this respect a form of their interest in collecting of artworks and in art patronage, shortly {--} in their virtu, will also be partly dealt with. As an introduction to the subject the survey is preceded by a text dealing with even earlier activities concerning art patronage and art collections that occured in the region of the Czech kingdom and also the Margraviate of Moravia.
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