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Appropriateness of modelling the actual soil model as a uniform or horizontal two-layer soil model
Kuběna, Michael ; Topolánek, David (referee) ; Vyčítal, Václav (advisor)
The present thesis deals with soil resistivity and especially the suitability of replacing various soil models with a two-layer horizontal model. First, the factors that influence soil resistivity as well as the methodology of its measuring are described, and various soil models are introduced. Then, the Ansys program was used to create several soil models: a vertical model with perpendicular or oblique division, a model with a pronounced inhomogeneity and a three-layer model. In all of these models, a Wenner measurement simulation was performed, followed by a two-layer horizontal replacement model. Then the size of the error that was created by replacing the actual model with a two-layer horizontal model was examined.
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Utilization of Heat in Biodegradation Processes as Electricity Savings Potential
Kuběna, Michael ; Šejvl, Radovan (referee) ; Baxant, Petr (advisor)
The present thesis deals with a non-traditional use of biomass–in particular the use of heat generated by the biodegradation processes, involving the degradation of organic substances. The theoretical part of the thesis discusses common uses of biomass in general first, later focusing on the description of biodegradation processes. Various types of bioreactors, in which biodegradation processes take place, are also briefly examined. Moreover, modern systems using this type of heating are described. The practical part focuses on the construction of a bioreactor with the system of heat dissipation. The bioreactor was monitored with temperature sensors to survey the ongoing processes inside the bioreactor and to determine the appropriate time to abstract the heat.
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Appropriateness of modelling the actual soil model as a uniform or horizontal two-layer soil model
Kuběna, Michael ; Topolánek, David (referee) ; Vyčítal, Václav (advisor)
The present thesis deals with soil resistivity and especially the suitability of replacing various soil models with a two-layer horizontal model. First, the factors that influence soil resistivity as well as the methodology of its measuring are described, and various soil models are introduced. Then, the Ansys program was used to create several soil models: a vertical model with perpendicular or oblique division, a model with a pronounced inhomogeneity and a three-layer model. In all of these models, a Wenner measurement simulation was performed, followed by a two-layer horizontal replacement model. Then the size of the error that was created by replacing the actual model with a two-layer horizontal model was examined.
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Utilization of Heat in Biodegradation Processes as Electricity Savings Potential
Kuběna, Michael ; Šejvl, Radovan (referee) ; Baxant, Petr (advisor)
The present thesis deals with a non-traditional use of biomass–in particular the use of heat generated by the biodegradation processes, involving the degradation of organic substances. The theoretical part of the thesis discusses common uses of biomass in general first, later focusing on the description of biodegradation processes. Various types of bioreactors, in which biodegradation processes take place, are also briefly examined. Moreover, modern systems using this type of heating are described. The practical part focuses on the construction of a bioreactor with the system of heat dissipation. The bioreactor was monitored with temperature sensors to survey the ongoing processes inside the bioreactor and to determine the appropriate time to abstract the heat.
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