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Thermodynamic Analysis of Internal Combustion Engine
Čajka, Lukáš ; Drápal, Lubomír (referee) ; Svída, David (advisor)
This thesis deals with analysis of the thermodynamics of the internal combustion engine. A survey on individual types of sensors used to measure pressure in combustion chamber is stated in the introductory part of the thesis. Another section deals with design of measuring chain. The main subject matter deals with compilation of the calculation program pertaining to the analysis of indicator diagram. Evaluation the results and procedures are included in the conclusion.
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Analysis of thermodynamic cycles of heat pumps
Vendrame, Katia ; Hejčík, Jiří (referee) ; Klimeš, Lubomír (advisor)
This bachelor thesis focuses on heat pumps for residential applications and their functioning. The theoretical part describes components of heat pump and briefly discusses energy sources that can be used. The types of refrigerants, which are currently used in heat pumps, are discussed: except to the broadly used HFC refrigerants, also the use of carbon dioxide is described. Further, the theoretical part includes the theory of thermodynamical cycles used in heat pumps. In the practical part a computer program for a fundamental thermodynamic analysis of heat pumps was created. The functionality and applicability of the program are demonstrated in the solution fo several problems.
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Analysis of thermodynamic cycles of heat pumps
Vendrame, Katia ; Hejčík, Jiří (referee) ; Klimeš, Lubomír (advisor)
This bachelor thesis focuses on heat pumps for residential applications and their functioning. The theoretical part describes components of heat pump and briefly discusses energy sources that can be used. The types of refrigerants, which are currently used in heat pumps, are discussed: except to the broadly used HFC refrigerants, also the use of carbon dioxide is described. Further, the theoretical part includes the theory of thermodynamical cycles used in heat pumps. In the practical part a computer program for a fundamental thermodynamic analysis of heat pumps was created. The functionality and applicability of the program are demonstrated in the solution fo several problems.
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Stress-strain Analysis of Tractor Exhaust Tail-pipe
Lébl, Jan ; Píštěk, Václav (referee) ; Dundálek, Radim (advisor)
This diploma thesis deals with the strength and frequency analysis of tractor exhaust pipe, which is being developed as an economic alternative in the preparation of construction for use in convertible tractor’s in the Zetor Tractors company. First, modal analysis is performed to determine the natural frequency of the exhaust pipe. In the next section it deals with stress-strain analysis to assess the overall structural strength of the exhaust pipe. At the end is performed thermodynamic analysis to assess the thermal resistance. For these calculations was used the finite element method (FEM) using computing software ANSYS 13.
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Physical analysis of the main processes in the solid oxide fuel cells and their mathematical description
Vágner, Petr ; Maršík, František (advisor) ; Souček, Ondřej (referee)
Solid oxide fuel cells (SOFC) are mainly used as large stationary elec- tricity sources, therefore an every little improvement in their performance leads to considerable savings. In order to understand the fundamentals of the SOFC operation, we have developed a new model describing the main physical processes. The thermodynamical model of SOFC, developed in this thesis, concerns the gas transport, the transport of the charged particles in- cluding the thermoelectric effect and the electrochemical reactions. Linear irreversible thermodynamics is the key modelling framework, in which the dusty gas model and the Butler-Volmer equations are used. A new relation between the electrochemical affinity and the overpotential is introduced into the Butler-Volmer equation. A weakly formulated statinonary system en- dowed with boundary conditions is solved with the finite element method in one dimensional approximation. 1
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Thermodynamic Analysis of Internal Combustion Engine
Čajka, Lukáš ; Drápal, Lubomír (referee) ; Svída, David (advisor)
This thesis deals with analysis of the thermodynamics of the internal combustion engine. A survey on individual types of sensors used to measure pressure in combustion chamber is stated in the introductory part of the thesis. Another section deals with design of measuring chain. The main subject matter deals with compilation of the calculation program pertaining to the analysis of indicator diagram. Evaluation the results and procedures are included in the conclusion.
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