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Biomass drying
Straka, Lukáš ; Chroboczek, Libor (referee) ; Pospíšil, Jiří (advisor)
The bachelor thesis deals with the importace of drying wood biomass and design drying equipment. The challenge is to design a drying line for drying sawdust for subsequent pelleting. Perform the heat balance calculations and suggest the basic dimensions of the drum dryer output of 100 kg/h of sawdust. Finally, the drying after evaluating the technical-economic terms.
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Possibilities of SinuTrain software in programming of CNC machine tools
Kohout, Tomáš ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This thesis illustrates the potential use of software SinuTrain for programming CNC machine tools on the component Sugar Bowl. First of all, Sinumerik 840D control system - ShopTurn is briefly positioned among other control systems. Subsequently, the technological preparation of production is processed for the two alternatives. The first one is production version from the rod blank 160 mm and the second one is production variant from a pre-cast. NC programs are created for the production of components of both technological options of Sugar Bowl in the software SinuTrain 6.3 - 6.4 V Open ShopTurn. The variants of technological solutions are compared with each other in the technical-economic evaluation. The pre-cast variant is better for manufacturing more than 50 pieces of the Sugar Bowls.
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Assessment of evaporator integration into biogas plant
Peťovský, Patrik ; Touš, Michal (referee) ; Máša, Vítězslav (advisor)
The main waste output of the biogas plant is digested which is used as fertilizer. It can be further process. Digestate cannot be discharged freely into surface waters. This problem is associated with high transportation costs and higher costs of storage tanks in the new biogas plant. The aim of this bachelor thesis is to assess a suitable evaporation system for a particular biogas plant. The evaporation system leads to the concentration of digestate by evaporation water. The system uses heat produced by cogeneration unit. The main consequence of the integration is lower cost for the transport of liquid digestate. The output of the bachelor thesis is a technical and economic evaluation that assesses the payback period depending on the flow of concentrated digestate. The specific costs for adjustment of liquid digestate with regard to the payback period are in the range of 5–15 years. The values do not exceed 210 (Kčyear)/t_fug . The values considering selling heat are even negative. The minimum value guaranteed by the manufacturer is around 260 (Kčyear)/t_fug . The integration of the evaporation system into Žamberk's biogas plant is economically disadvantageous. The thesis brings new knowledge about the potential of multi-stage flash evaporation in biogas plants with short transport distances and high utilization of waste heat.
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Assessment of evaporator integration into biogas plant
Peťovský, Patrik ; Touš, Michal (referee) ; Máša, Vítězslav (advisor)
The main waste output of the biogas plant is digested which is used as fertilizer. It can be further process. Digestate cannot be discharged freely into surface waters. This problem is associated with high transportation costs and higher costs of storage tanks in the new biogas plant. The aim of this bachelor thesis is to assess a suitable evaporation system for a particular biogas plant. The evaporation system leads to the concentration of digestate by evaporation water. The system uses heat produced by cogeneration unit. The main consequence of the integration is lower cost for the transport of liquid digestate. The output of the bachelor thesis is a technical and economic evaluation that assesses the payback period depending on the flow of concentrated digestate. The specific costs for adjustment of liquid digestate with regard to the payback period are in the range of 5–15 years. The values do not exceed 210 (Kčyear)/t_fug . The values considering selling heat are even negative. The minimum value guaranteed by the manufacturer is around 260 (Kčyear)/t_fug . The integration of the evaporation system into Žamberk's biogas plant is economically disadvantageous. The thesis brings new knowledge about the potential of multi-stage flash evaporation in biogas plants with short transport distances and high utilization of waste heat.
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Possibilities of SinuTrain software in programming of CNC machine tools
Kohout, Tomáš ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This thesis illustrates the potential use of software SinuTrain for programming CNC machine tools on the component Sugar Bowl. First of all, Sinumerik 840D control system - ShopTurn is briefly positioned among other control systems. Subsequently, the technological preparation of production is processed for the two alternatives. The first one is production version from the rod blank 160 mm and the second one is production variant from a pre-cast. NC programs are created for the production of components of both technological options of Sugar Bowl in the software SinuTrain 6.3 - 6.4 V Open ShopTurn. The variants of technological solutions are compared with each other in the technical-economic evaluation. The pre-cast variant is better for manufacturing more than 50 pieces of the Sugar Bowls.
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Biomass drying
Straka, Lukáš ; Chroboczek, Libor (referee) ; Pospíšil, Jiří (advisor)
The bachelor thesis deals with the importace of drying wood biomass and design drying equipment. The challenge is to design a drying line for drying sawdust for subsequent pelleting. Perform the heat balance calculations and suggest the basic dimensions of the drum dryer output of 100 kg/h of sawdust. Finally, the drying after evaluating the technical-economic terms.
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Renovation of expensive spare parts using of special engineering technologies.
DOLEŽEL, Zdeněk
This masters thesis deals with renovations expensive spare parts for the use of special engineering technologies. The aim was to compare and evaluate the technical and economical technological processes used components renovations. In the theoretical part are written information obtained from literature sources dealing with the basic concepts, definitions and describes the most commonly used technology renovation. In their study were selected components for renovation, where it is necessary to use special methods of engineering technologies. The first part was chosen balancer shaft used for four-cylinder diesel engine Volkswagen. For component was suggested special technological process of repair, so as to achieve low prices, but also guarantee a high quality repair and threaten further damage. Price repairs were compared against the cost of a new spare part. Another component was selected renovation speed bump for truck Scania. For component was suggested technological process of repair. Prices renovations by various techniques were compared.
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