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Heat exchanger flu gas - water/stem for tri-generation unit based on stroke engine
Hadraba, Jiří ; Baláš, Marek (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis with resolution of technical and partially economical project of combustion exchanger of cogeneration unit for application of absorbing cooling. Considered types of exchangers are: combustions/water and combustions/steam. The other capitols include the description of cogeneration, trigeneration and other possible resolutions of intersections among mentioned systems; general overview of plant oils used as a fuel in energetics, particularly in compression engines in technology of combined production of electricity and heat.
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Utilization of Waste Vegetable Oils as an Alternative Fuel for Diesel Combustion Engines
Michna, Lukáš ; Novotný, Pavel (referee) ; Stodola, Jiří (advisor)
In the introduction this thesis brings a short summary of the energy, environmental and economical balance, related to the production and use of conventional fuels for diesel engines, and compares them with possibility of using recycled cooking vegetable oils as a fuel. The main part focuses on the laboratory analysis of major physical and chemical properties of this alternative fuel and on their comparison to diesel fuel, especially according to ČSN EN 590 norm. In conclusion there is a proposal of diesel vehicle modification to be propelled with waste vegetable oils.
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Vegetable Oils as Alternative Fuel
Ježek, Přemysl ; Svída, David (referee) ; Dundálek, Radim (advisor)
Presented thesis applies to possible solutions of the reduction of environmental pollution - use vegetable oil as diesel engine fuel. Thesis aims to describe important terms of this topic and to name facts linked with vegetable oils in use. In the end it tries to make a prognosis based on gathered information.
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Vegetable oil as a fuel for a diesel engine
Kuběna, Pavel ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This thesis offers an opportunity to get closely acquainted with ignition engines running on alternative fuels. At the beginning of this work the reader is offered a wide variety of alternative fuels since born automotive industry, their basic information, features, use, and technical issues of each fuel. In the following part of this thesis, the author deals only with vegetable oil and its potential use as a fuel in an ignition internal combustion engine. It focuses on the specific conversion vehicles, their complexity, advantages and disadvantages, the overall economy of operation and risks of using vegetable oil instead of conventional diesel fuel. There is also documented performance characteristics and ecological balance of a particular target vehicle.
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Characterization of plum oil and its use in cosmetics
Kaňovská, Zuzana ; Němcová, Andrea (referee) ; Szotkowski, Martin (advisor)
The aim of this bachelor thesis was to characterize plum kernel oil and to explore its possible use in the cosmetics industry. The theoretical part of the thesis is a research on the properties of vegetable oils in general, plum kernel oil and other kernel oils. In the experimental part, the oil was characterized in terms of the profile of fatty acids, phenolic compounds and tocopherols. Body lotion was also prepared, containing plum kernel oil, for which hydration and barrier properties were determined. Pure plum kernel oil and body lotion were tested for antimicrobial activity.
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Use of rare oils in cosmetics
Pilipenco, Alina ; Szotkowski, Martin (referee) ; Němcová, Andrea (advisor)
The purpose of this bachelor thesis was to research rare oils. The oils from selected plants (poppy, cannabis, thistle) is characterized by the content of active phenolic compounds, fatty acid composition, antioxidant and antimicrobial effects. First part of the thesis is a literary research on a given topic, which contains the following parts: the universal chemical composition of vegetable oils, the characteristics and effects of selected oils and the ways of their obtaining for cosmetic purposes. The experimental part is focused primarily on the basic analysis of selected oil components and the preparation of the shower oil based on the obtained results. In conclusion are presented an overview of all the properties of selected oils, their practical use and assessment of their application in cosmetics.
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Characterization of plum oil and its use in cosmetics
Kaňovská, Zuzana ; Němcová, Andrea (referee) ; Szotkowski, Martin (advisor)
The aim of this bachelor thesis was to characterize plum kernel oil and to explore its possible use in the cosmetics industry. The theoretical part of the thesis is a research on the properties of vegetable oils in general, plum kernel oil and other kernel oils. In the experimental part, the oil was characterized in terms of the profile of fatty acids, phenolic compounds and tocopherols. Body lotion was also prepared, containing plum kernel oil, for which hydration and barrier properties were determined. Pure plum kernel oil and body lotion were tested for antimicrobial activity.
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Teplotní závislost viskozity rostlinných olejů
Bureš, Václav
A large part of this bachelor thesis is focused on fats and oils, their usage and ef-fect on human health and organism, as well as industrially oil extraction and its final treatment before filling the packages and distribution to the end consumer through business network. There are three kinds of the most used vegetable oils, namely rape-seed, sunflower and olive oil, and then two kinds of less traditional, such as grape oil and rice oil. There are a characteristics, chemical composition and utilization of these oils described. Second part is practical and deals directly with the change of the viscos-ity of these oils within increasing the temperature. The viscosity is measured on rotary viscometer Brookfield DV2T. The measured values have been evaluated and processed into graphs and tables.
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Rostlinné oleje - jejich výroba, význam a zdravotní přínosy
Kopečková, Jana
Bachelor thesis Vegetable oils - their importance, production and health benefits were carried out at the department of Post-Harvest Technology of Horticultural Products at the Faculty of Horticulture at the Mendel University in Brno in the academic year 2018/2019. The literature part deals with the basic chemical structure of lipids and the reactions that most often occur in lipids. Crops, which are the most used, both within the Czech Republic and in the world, include rape, soybean, sunflower, cotton, peanut, oil palm and coconut palm. For each of these oilseeds, its chemical composition and influence on consumer health are mentioned. In the next part, there are legislative requirements related to the issue and technology of oil production. In the practical part, 12 types of oils were analyzed, one of the basic parameters were determined - peroxide value, acid value, saponification value and iodine value. Methods, which were used, are from valid ČSN standards. The results were statistically processed.
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