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Design of Stirling Engine Operating at Low Temperature Difference
Gavač, Adam ; Kolář, Ladislav (referee) ; Sedlák, Josef (advisor)
The aim of this study is to acquaint the reader with the Stirling engine, which is one of the possible alternatives to generally known combustion engine. The theoretical part has three major purposes: First is to describe thermodynamics of the Stirling cycle in the range that is essential for comprehension of the engine`s operating principle. Second is to mathematicaly derivate expression for the efficiency of the ideal Stirling cycle. Third is to discuss each of the essential parts of the device. Concepts acquired in the theoretical part were employed to design a digital model in the parametric modeler Autodesk Inventor. Parts were manufactured by a combination of typical and progressive technologies. Engine was assembled and tested afterwards.
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Unconventional heat cycles
Snášel, Jan ; Košner, Jan (referee) ; Jedelský, Jan (advisor)
The bachelor thesis is describing four unconventional heat cycles and devices which are using them. It is Stirling cycle, organic-Rankine cycle, Kalina cycle and Brayton cycle. The cycles are described in terms of the main parts of their devices and in terms of their thermomechanical principle. In thesis are also stated applications for each cycle and their advantages and disadvantages. There are also stated formulas for the ideal cases of cycles to calculate specific work done, specific input heat flow and efficiency of cycle.
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Ideal cycles of combustion engines
Kertész, Tibor ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
The main subject of this bachelor´s thesis is to summarize basic theoretical knowledge of ideal thermodynamic cycles and to develop their mathematical models in Matlab to calculate and draw diagrams of each cycle. Based on the calculated values, it was possible to compare the cycles with each other.
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Stirling Engine
Vondruš, Jan ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This bachelor thesis deals with the description and calculation of a closed regenerative thermodynamic cycle. In the theoretical part of the thesis, there is described history of the engine, the principle of its function, differences between particular design variants, and the use of the engine in the past and nowadays. In the other part of the work, there is described the principle and calculation of ideal Stirling cycle. In addition, there are included positives as well as negatives of applying the heat devices based on this cycle. Practical part of the work deals with the calculation of ideal Stirling cycle with the use of Schmidt theory. The primary aim of this bachelor thesis is then to compare and contrast the results gained from both of the calculation methods. In the end, the results of the thesis show that the use of Schmidt theory gives lower, i.e. more accurate, values of engine's parameters compared to the use of Stirling ideal cycle.
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Stirling cycle
Veselý, Milan ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
This work was aimed to comparise of ideal traditional and alternative termodynamic cycles, calculations and determinativ of efficiency of these cycles, executions of p-V and T-S diagrams with a closer look at the Stirling cycle.
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Stirling engine
Mader, Dan ; Jedelský, Jan (referee) ; Hejčík, Jiří (advisor)
Presented bachelor thesis deals with study of constructional variations of Stirling engine that work in reverse as heat pump for cooling. First chapter contains history and functional principle of Stirling engine. Second chapter describes Stirling cycle for various devices. The following chapters consist of constructional variations which are divided into three application categories: commercial, military technical, space. In last chapter are these variations compared together and possible future of these devices is being predicted. Result of this thesis is theoretical analysis of Stirling cryocoolers that are based on Stirling engine.
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Study of Stirling cycle
Pospíšil, Jaromír ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
The purpose of my thesis is to introduce the Stirling cycle as a thermodynamic cycle and introduce theoretical analysis due to Gustav Schmidt. First part concentrates on principle of Stirling cycle and on the differences between the ideal and real cycle. Next part introduces step by step a derivation of theoretical analysis of the operation of Stirling engines due to Gustav Schmidt Last part graphically investigates the dependence of principal design parameters of Schmidt analysis on power parameter of Stirling engine.
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Heat engines for waste heat utilization
Macháček, Pavel ; Lízal, František (referee) ; Jedelský, Jan (advisor)
This thesis deals with heat cycles for waste heat utilization and their comparison. The first part describes particular heat cycles, their basic modifications and working principle, their advantages and disadvantages and typical applications. The second part is dedicated to technical parameters and creating of idealized models of those cycles on the basis of gained data. The comparison of the cycles is also done.
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Stirling cycle
Veselý, Milan ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
This work was aimed to comparise of ideal traditional and alternative termodynamic cycles, calculations and determinativ of efficiency of these cycles, executions of p-V and T-S diagrams with a closer look at the Stirling cycle.
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