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Retrofit HP Section Steam Turbine 300MW
Vaľočík, Jan ; Buršík, Michal (referee) ; Buršík, Michal (referee) ; Fiedler, Jan (advisor)
The aim of this master‘s thesis is retrofit of a 300 MW tandem compound steam turbinetype K300 - 170 with three casings and reheat of steam. In the first part a heat balance of the cycle is calculated for given nominal parameters. Further the thesis is focused only on the high pressure section of the turbine, for which the flow section is designed based on thermodynamic calculations and appropriate blade profiles are selected. Then the stress control of the blading is done. The thesis is concluded with estimation of power loss due to shaft seals and real power output of the turbine is calculated. This thesis also includes a drawing of axial section of the high pressure section of the turbine.
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Design of a combi cycle for heating plant
Rovný, Jan ; Kracík, Petr (referee) ; Milčák, Pavel (advisor)
Nowadays, European power production has to meet requirements than ever before. Environmentally oriented efforts end of coal mining and burning of coal, on which economies of a great number of countries depend. The main objective of these efforts is primarily the production of green energy from renewable energy sources and reduction of dependence on fossil fuels. However, the disadvantage of renewable sources (photovoltaics, wind farms) is their dependence on the weather conditions. As a result, there might be delays in supply of electricity, which must be compensated. One of the solutions is the launch of a combi cycle plant, which has the possibility of almost prompt start-up and electricity production. The combustion of gas and liquid fuels also ensures almost emission-free operation. In addition, thanks to the use of waste heat energy from the gas turbine, it is possible to operate the combi cycle unit with the character of a power plant and as a heating plant. The aim of this thesis is to search for combi cycles and balance calculation of the combi cycle heating plant under given conditions. In the last point, the approximate dimensions of the calculated heating plant are given.
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Calculation of the thermal diagram high load steam turbine with steam reheating
Cerman, Marek ; Lázničková, Ilona (referee) ; Raček, Jiří (advisor)
The major topic of this bachelor’s thesis is calculation of thermal diagram with condensing steam turbine. In the first section the project is focused on the theory of steam cycles. In nine separate chapters the reader is briefly introduced to the principle of steam turbine as well as to some common type of steam turbines, basic diagrams of steam cycles and their illustrations in T-s diagram and Mollier h-s diagram. The attention is then individually focused on the process of energy change, how is the steam energy transformed into a mechanical energy, the inference of turbine output power, the assesment of actual efficiency of steam diagram systems and on the facilities that allow for an increase of the efficiency in practice. In the second section of the project, the calculation of thermal diagram of free-cylinder turbine with steam reheating is introduced as a follow-through to the theoretical basics. The rated output of the turbo-set is 100 MW. The thermal cycle is defined by the main steam parameters, the reheat parameters and the emission pressure. Setting component is basic thermal diagram which foremost introduces the connections of system of regenerative heaters from the point of utilisation of the heating steams condensates. First chapter of the second section targets the general method of solution, which in connectedness consists of the concept of steam expansion in the turbine, the concept of heating feed water in regenerative heaters, the assignment of the mass steam flows in the cycle and the assignment of energy index figures. The method analysis is, even in the scope of determining basic parameters detailed. In the second chapter, the general method is subsequently applied to a numeral calculation of the given diagram. Here, the method that exploits computer software is demonstrated. It will assert itself with the instancy, the calculation may be proceeded with, compared to common use of water and steam tables and to the accuracy to which the quantity values of working substance are marked during various thermodynamic phases. All of the significant figures defining the designated thermal cycle are calculated. In the conclusion the values are summarized in a table and picture overview and evaluated.
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Technological solution of biomass power station with steam engine.
Pleban, Jakub ; Lisý, Martin (referee) ; Škorpík, Jiří (advisor)
This work describes function and main parts of a heat plant burning biomass. The work is thematically divided into five parts. In the first part there are presented possible sorts of energy which are suitable for generating both electric and heat energy. The second part of the work describes basic principles of the plant functioning. The third part which relates to the second one is focused on the given technologic scheme of the plant. The fourth part closely analyses a function of a steam piston engine and its main components. In the last part there is assessed the actual situation in the field of heating plants in the Czech republic.
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|
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Design of a combi cycle for heating plant
Rovný, Jan ; Kracík, Petr (referee) ; Milčák, Pavel (advisor)
Nowadays, European power production has to meet requirements than ever before. Environmentally oriented efforts end of coal mining and burning of coal, on which economies of a great number of countries depend. The main objective of these efforts is primarily the production of green energy from renewable energy sources and reduction of dependence on fossil fuels. However, the disadvantage of renewable sources (photovoltaics, wind farms) is their dependence on the weather conditions. As a result, there might be delays in supply of electricity, which must be compensated. One of the solutions is the launch of a combi cycle plant, which has the possibility of almost prompt start-up and electricity production. The combustion of gas and liquid fuels also ensures almost emission-free operation. In addition, thanks to the use of waste heat energy from the gas turbine, it is possible to operate the combi cycle unit with the character of a power plant and as a heating plant. The aim of this thesis is to search for combi cycles and balance calculation of the combi cycle heating plant under given conditions. In the last point, the approximate dimensions of the calculated heating plant are given.
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|
|
Retrofit HP Section Steam Turbine 300MW
Vaľočík, Jan ; Buršík, Michal (referee) ; Buršík, Michal (referee) ; Fiedler, Jan (advisor)
The aim of this master‘s thesis is retrofit of a 300 MW tandem compound steam turbinetype K300 - 170 with three casings and reheat of steam. In the first part a heat balance of the cycle is calculated for given nominal parameters. Further the thesis is focused only on the high pressure section of the turbine, for which the flow section is designed based on thermodynamic calculations and appropriate blade profiles are selected. Then the stress control of the blading is done. The thesis is concluded with estimation of power loss due to shaft seals and real power output of the turbine is calculated. This thesis also includes a drawing of axial section of the high pressure section of the turbine.
|
|
|
Calculation of the thermal diagram high load steam turbine with steam reheating
Cerman, Marek ; Lázničková, Ilona (referee) ; Raček, Jiří (advisor)
The major topic of this bachelor’s thesis is calculation of thermal diagram with condensing steam turbine. In the first section the project is focused on the theory of steam cycles. In nine separate chapters the reader is briefly introduced to the principle of steam turbine as well as to some common type of steam turbines, basic diagrams of steam cycles and their illustrations in T-s diagram and Mollier h-s diagram. The attention is then individually focused on the process of energy change, how is the steam energy transformed into a mechanical energy, the inference of turbine output power, the assesment of actual efficiency of steam diagram systems and on the facilities that allow for an increase of the efficiency in practice. In the second section of the project, the calculation of thermal diagram of free-cylinder turbine with steam reheating is introduced as a follow-through to the theoretical basics. The rated output of the turbo-set is 100 MW. The thermal cycle is defined by the main steam parameters, the reheat parameters and the emission pressure. Setting component is basic thermal diagram which foremost introduces the connections of system of regenerative heaters from the point of utilisation of the heating steams condensates. First chapter of the second section targets the general method of solution, which in connectedness consists of the concept of steam expansion in the turbine, the concept of heating feed water in regenerative heaters, the assignment of the mass steam flows in the cycle and the assignment of energy index figures. The method analysis is, even in the scope of determining basic parameters detailed. In the second chapter, the general method is subsequently applied to a numeral calculation of the given diagram. Here, the method that exploits computer software is demonstrated. It will assert itself with the instancy, the calculation may be proceeded with, compared to common use of water and steam tables and to the accuracy to which the quantity values of working substance are marked during various thermodynamic phases. All of the significant figures defining the designated thermal cycle are calculated. In the conclusion the values are summarized in a table and picture overview and evaluated.
|
|
|
Technological solution of biomass power station with steam engine.
Pleban, Jakub ; Lisý, Martin (referee) ; Škorpík, Jiří (advisor)
This work describes function and main parts of a heat plant burning biomass. The work is thematically divided into five parts. In the first part there are presented possible sorts of energy which are suitable for generating both electric and heat energy. The second part of the work describes basic principles of the plant functioning. The third part which relates to the second one is focused on the given technologic scheme of the plant. The fourth part closely analyses a function of a steam piston engine and its main components. In the last part there is assessed the actual situation in the field of heating plants in the Czech republic.
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