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Hodnocení lisovacích účinků ve vinařských provozech
Kosík, Jiří
This thesis describes methods of work and structural variants of wine presses used in modern wineries in detail. It summarizes strengths and weaknesses of technological solutions. The practical part of the thesis deals with the evaluation of two presses, each of which is based on a different principle. The effects of pressing were observed during the processing of three grape varieties -- Sauvignon, Chardonnay and Zweigeltrebe -- in 2011, 2012 and 2013. The amount of pressure, processing, most gain and productivity were assessed. The cost of processing one hectolitre of the product was fixed for both systems.
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Hodnocení lisovacích účinků u pneumatických lisů
Vajbar, Kamil
The aim of dissertation was to evaluate physico-mechanical characteristics of pneumatic (membrane) press depending on pressing efficiency. As the result of economic evaluation was to determine the financial cost which occurs during pressing proces for 1 liter of juice, as well as make this analysis for different pressures.
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Comprehensive Assessment of Energy Demand in Production of Granules for Renewable Resources Heating
STERNBERG, Jiří
The first part of the graduation thesis deals with renewable resources, utilization possibilities of biomass and plant phytomass. The most common sources from which phytomass is obtained, are also mentioned here. A great deal of attention is paid to selected energetic plants included into the experiment. It is Sorrel Rumex OK-2 (Rumex tianschanicus x Rumex patientia) and Poppy seed (Papaver Somniferum). Further there are summarized the processes necessary for separating and pressing of biomass into granules for direct combustion. Within the research, two-year experience of growing sorrel stand is described. On the basis of performed technological operations in the stand, energy demands of growing are calculated. The real usage of energy at the production of one tonne of granules is measured. When labour costs are taken into account I can say that the expenses for the production of one tonne of briquettes from biomass would be 4 592 CZK, which is a non-competitive sum.
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Construction and design of stamping tools for metal parts with focus in can drawing
KOTRBA, Jiří
The introductory part of this bachelor thesis is theoretical and it discusses about the topic of sheet stamping in general. In this part analysis and detailed examination of stamping technologies are performed. In the second part, there are tendencies in evolution of stamping tools described and analysed in last years. At the end of the work suggestions for improving arrangements of stamping tools and prediction of future development in stamping tools designs are mentioned.
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Finanční zhodnocení možností výroby pomerančového oleje ve zvoleném regionu
Smíšková, Michaela
This thesis deals with the possibility of the processing of orange peels, that are available for juice producers after the production process and currently are determined to landfill. Proposed practical project explores the need for further use of orange oil, which can bring economic profit to local farmers, help to create new job opportunity and contribute to the overall development of the region. The issue of agrarian sector is described in the theoretical part. By verifying the feasibility of the project deals with both the analytical part of the empirical section, which indicates the initial state, problems and circumstances of the region Eastern Cape and practical part in which compression method is selected as the most effective for this type of production and expected investments are evaluated in the context of financial analysis. The work confirms the possibility of using this type of waste as a natural mechanism of value-added manufacturer of juice and understands the production of an economic, environmental and social benefits for the monitored region.
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The processing of biomass for direct combustion
TOMÁŠEK, Petr
The aim of this work is to create an overview of the possibilities of using the biomass for energy purposes and to assess various treatment technologies of biomass for direct combustion. It was performed the consumption monitoring of pellets in a family house newly insulated and an assessment of the pellet boiler. As fuel for heating of the house were used white wood pellets made from clean wood and wood waste, without additives. For calculation the consumption of pellets and an assessment of the boiler were used data from the heating season 2011/2012. Finally, a comparison is made of pellets and other fuels for heating the object.
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