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Combi-cycle power plant
Tkachuk, Andriy ; Borbély, Richard (referee) ; Fiedler, Jan (advisor)
This bachelor thesis analyzes the combi-cycle, the advantage of which is easy separation of CO2 for its storage and further usage. The first part shortly presents the currently used cycles and introduces the Graz cycle. It also lists its advantages and disadvantages. The second part focuses on the description of the calculation of thermal efficiency of the cycle and the calculation itself. The calculation is attached in a separate .XLS file. At the end of the thesis, the result of the calculation is interpreted and the conditions under which the project would be realized are outlined.
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Combi-cycle power plant
Tkachuk, Andriy ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
This master thesis follows the bachelor thesis with the same name. It is looks into the analyses of the combi-cycle, the advantage of which is high efficiency and easy separation of CO2 for its storage and further usage. It introduces the Graz cycle, its thermal balance a basic arrangement. The calculation is attached in a separate .XLS file. At the end of the thesis, the result of the calculation is interpreted and the conditions under which the project would be realized are outlined.
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Bi-penalty stabilized explicit finite element algorithm for one-dimensional contact-impact problems
Kolman, Radek ; Kopačka, Ján ; Tkachuk, A. ; Gabriel, Dušan ; Gonzáles, J.A.
In this contribution, a stabilization technique for finite element modelling of contact-impact problems based on the bipenalty method and the explicit predictor-corrector time integration is presented. The penalty method is a standard method for enforced contact constrains in dynamic problems. This method is easily implemented but the solution depends on numerical value of the stiffness penalty parameter and also the stability limit for explicit time integration is effected by a choice of this parameter. The bipenalty method is based on penalized not only stiffness term but also mass term concurrently. By this technique with a special ratio of mass and stiffness penalty parameters, the stability limit of contact-free problem is preserved. In this contribution, we also present a modification of the explicit time scheme based on predictor-corrector form. By meaning of this approach, spurious contact oscillations are eliminated and the results do not depend on numerical parameters.
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Combi-cycle power plant
Tkachuk, Andriy ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
This master thesis follows the bachelor thesis with the same name. It is looks into the analyses of the combi-cycle, the advantage of which is high efficiency and easy separation of CO2 for its storage and further usage. It introduces the Graz cycle, its thermal balance a basic arrangement. The calculation is attached in a separate .XLS file. At the end of the thesis, the result of the calculation is interpreted and the conditions under which the project would be realized are outlined.
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Combi-cycle power plant
Tkachuk, Andriy ; Borbély, Richard (referee) ; Fiedler, Jan (advisor)
This bachelor thesis analyzes the combi-cycle, the advantage of which is easy separation of CO2 for its storage and further usage. The first part shortly presents the currently used cycles and introduces the Graz cycle. It also lists its advantages and disadvantages. The second part focuses on the description of the calculation of thermal efficiency of the cycle and the calculation itself. The calculation is attached in a separate .XLS file. At the end of the thesis, the result of the calculation is interpreted and the conditions under which the project would be realized are outlined.
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