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Steam turbine for biomass heating plant
Cmajdálka, Ondřej ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
This master thesis deals with the design of a condensing steam turbine for a biomass block burning wood chips with one regulated take for a hot water heat exchanger. The temperature gradient for the hot water is 90/110 ° C. The thesis guides through the designing proces of a steam turbine from the thermal scheme proposed according to the specified parameters, through the design of the regulatory stage and the stage part of the turbine, including strength calculation, to the design of the compensating piston, seals system and bearings. Finally, the operating characteristic of the turbine is constructed.
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Steam Turbine for the Waste to Energy
Janata, Petr ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The master thesis deals with the design of a condensing steam turbine for a waste incineration plant with regulated take for a heat exchanger, which has a heat output of 15 MWt and a temperature gradient of 60/90 °C. In the thesis, a thermal scheme was first designed, which was based on the required design parameters. The maximum mass flow of steam into the turbine is 38 t/h. The pressure and temperature of the admission steam is 37 bar and 440 °C. The degassing temperature is 105 °C and the cooling water temperature at the condenser inlet is 20 °C. The following is the design and thermodynamic calculation of the turbine flow channels. The first stage of the turbine is designed as a regulatory with equal pressure blades. The rest part of the turbine is designed with overpressure blades and is divided into 6 cones, in which there are a total of 27 stages. The strength inspection of the designed blade profiles was performed. A compensating piston and a gland system were designed. Finally, bearings for the rotor were designed and then the operating diagram of the turbine was constructed. The work is supplemented by a structural drawing of the longitudinal section of the turbine.
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CFD simulation flow of steam in the unregulated extraction of steam turbine
Filip, Patrik ; Pospíšil, Jiří (referee) ; Fiedler, Jan (advisor)
Diploma thesis named CFD simulation of the steam flow in the unregulated extraction of the steam turbine is about an analysis of the balance piston impact on the area of the steam turbine, where the extraction is located. First part describes basic knowledge of the steam turbine in general. At the end of this chapter, there is a description of the solved steam turbine. Next chapter is about introduction to the CFD. Practical part deals with a construction of 3D models, meshing and setting of the boundary conditions in the program ANSYS CFX. The main part of this thesis summarizes the results of the CFD simulation and stipulates the temperature range on the extraction pipe. In conclusion, there is a recommendation how to determine design temperature of the extraction pipe influenced by the balance piston.
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Steam Turbine for Compressor Drive
Beran, Petr ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The goal of this diploma thesis is design of steam turbine for driving a compressor with mechanical power of 25 MW, while using a standard API 612. In the first chapter of this work there is calculation of the steam mass flow about value of 23.17 kg/s, the next chapter deals with the design of control stage with the diameter of 0.715 m, inner power of 1673.6 kW and thermodynamic efficiency of 68 %. The following chapter includes thermodynamic calculation of stage part about power of 26.37 MW at designed rotation speed 5722.5 rpm which corresponds to 105 % of rated speed and thermodynamic efficiency 84 %. For control stage and stage part there is a strength calculation control. The thesis also includes basic design of gland sealing system, the design of balance piston with diameter of 0.543 m and the choosing of axial and radial bearings due to acting forces. The conclusion chapter deals with operating characteristic of designed steam turbine. The thesis includes mechanical drawing of turbine.
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Steam turbine for SMR
Guliš, Jan ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
This master’s thesis deals with the design of condensing steam turbine for small modular reactor (SMR) with nominal heat power of 250 MW. Steam turbine is designed in two variants. The first variant operates with all the heat power of nuclear reactor. In the second variant the heat power is equally divided into two identical steam turbines so the designed turbine process half of the heat power. In the first part of the paper the haet balance diagrams with low pressure regeneration are proposed. In both cases the turbine has a total of four bleeds. Three bleeds for low pressure heaters and one bleed for degasification system in feed water tank. Both turbines are designed with an impulse stage and reaction blading. Turbine that processes all the heat power is designed without gearbox at nominal rpm of 3000, contains 15 stages and achieves a clamp power of 71,11 MW. Turbine that operates with half of the heat power is designed with a gearbox at nominal rpm of 4500, has 14 stages and clamp power of 34,91 MW. The consumption characteristics are created for both of designed steam turbines. Drawing of the turbine section is attached to the thesis.
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Steam turbine for biomass heating plant
Cmajdálka, Ondřej ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
This master thesis deals with the design of a condensing steam turbine for a biomass block burning wood chips with one regulated take for a hot water heat exchanger. The temperature gradient for the hot water is 90/110 ° C. The thesis guides through the designing proces of a steam turbine from the thermal scheme proposed according to the specified parameters, through the design of the regulatory stage and the stage part of the turbine, including strength calculation, to the design of the compensating piston, seals system and bearings. Finally, the operating characteristic of the turbine is constructed.
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Steam Turbine for Compressor Drive
Beran, Petr ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The goal of this diploma thesis is design of steam turbine for driving a compressor with mechanical power of 25 MW, while using a standard API 612. In the first chapter of this work there is calculation of the steam mass flow about value of 23.17 kg/s, the next chapter deals with the design of control stage with the diameter of 0.715 m, inner power of 1673.6 kW and thermodynamic efficiency of 68 %. The following chapter includes thermodynamic calculation of stage part about power of 26.37 MW at designed rotation speed 5722.5 rpm which corresponds to 105 % of rated speed and thermodynamic efficiency 84 %. For control stage and stage part there is a strength calculation control. The thesis also includes basic design of gland sealing system, the design of balance piston with diameter of 0.543 m and the choosing of axial and radial bearings due to acting forces. The conclusion chapter deals with operating characteristic of designed steam turbine. The thesis includes mechanical drawing of turbine.
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Steam Turbine for the Waste to Energy
Janata, Petr ; Fiedler, Jan (referee) ; Kracík, Petr (advisor)
The master thesis deals with the design of a condensing steam turbine for a waste incineration plant with regulated take for a heat exchanger, which has a heat output of 15 MWt and a temperature gradient of 60/90 °C. In the thesis, a thermal scheme was first designed, which was based on the required design parameters. The maximum mass flow of steam into the turbine is 38 t/h. The pressure and temperature of the admission steam is 37 bar and 440 °C. The degassing temperature is 105 °C and the cooling water temperature at the condenser inlet is 20 °C. The following is the design and thermodynamic calculation of the turbine flow channels. The first stage of the turbine is designed as a regulatory with equal pressure blades. The rest part of the turbine is designed with overpressure blades and is divided into 6 cones, in which there are a total of 27 stages. The strength inspection of the designed blade profiles was performed. A compensating piston and a gland system were designed. Finally, bearings for the rotor were designed and then the operating diagram of the turbine was constructed. The work is supplemented by a structural drawing of the longitudinal section of the turbine.
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CFD simulation flow of steam in the unregulated extraction of steam turbine
Filip, Patrik ; Pospíšil, Jiří (referee) ; Fiedler, Jan (advisor)
Diploma thesis named CFD simulation of the steam flow in the unregulated extraction of the steam turbine is about an analysis of the balance piston impact on the area of the steam turbine, where the extraction is located. First part describes basic knowledge of the steam turbine in general. At the end of this chapter, there is a description of the solved steam turbine. Next chapter is about introduction to the CFD. Practical part deals with a construction of 3D models, meshing and setting of the boundary conditions in the program ANSYS CFX. The main part of this thesis summarizes the results of the CFD simulation and stipulates the temperature range on the extraction pipe. In conclusion, there is a recommendation how to determine design temperature of the extraction pipe influenced by the balance piston.
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