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Adiabatic air cooling
Silbernágl, Petr ; Blasinski, Petr (referee) ; Rubinová, Olga (advisor)
The diploma thesis deals deals with the designing and assessment of the two variants of cooling and humidifying the air in the production hall for cotton in Humpolec. The system is proposed to fulfil hygienic, operational, economic and functional requirements for indoor microclimate of the production hall. The task of this system is the transport of cooler air to interior and the covering of heat gains all year round. The equipment is also designed for the regulation of air humidity in the interior. The theoretical part is devoted to air humidification and air humidification device. Calculation of the project and then a specific proposal, two variants for air distribution level studies. Both variants are treated as project documentation. Experimental part is devoted to the measurement on the measuring path containing adiabatic humidifier in the laboratory. The benefit of the experiment is to verify the data from the manufacturer adiabatic humidifier which we can assess the practical use of the product.
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Design of heat exchanger for feeding heat water network 5,5 MW
Kubíček, Ondřej ; Moskalík, Jiří (referee) ; Baláš, Marek (advisor)
The Master thesis deals with the water-heater design for heat-exchange station with total power output 5,5 MW. The goal of the thesis is to make thermal and hydraulic calculation in the extent of the assignment and to develop a projection drawing of the heater along with a correct dimensioning of the shell and flanges. Thesis goals were met according to the assignment. The introductory part of the thesis briefly introduces to the heat-exchanger problematic and selected topics about heat-transfer. Following the basic mass and energy flows calculation inside the heater together with the thermal and hydraulic design determines the size of the heat transfer surface of pipes. After that the design calculations were made, whose results are used to determine the basic dimensions of selected parts and checking the accuracy of designed dimensions. In the last part of the work the design process is more described also with a more detailed description of selected parts.
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Air-cooled condenser
Kloda, Michal ; Jaroslav, Sinecký (referee) ; Pospíšil, Jiří (advisor)
The Master’s thesis dealing with air-cooled condensers is split into four sections. The first section shows an overview of air cooling, introduction into air-cooled condensers of A-frame shape and finned tubes. The second section deals with heat transfer on the steam side and deals with trapped incondensables on the steam side of ACC. The third section deals with heat transfer on the air side, shows a brief overview of fans and selected problems on the air side. In the last section the simplified thedmodynamic calculation of air-cooled condenser is shown.
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Experimental and Numerical Assessment of the Heat Transfer Coeficients for Industrial Steam Turbine for Siemens Industrial Turbomachinery
Hladík, Petr ; Pospíšil, Jiří (referee) ; Hrabovský, Jozef (advisor)
The subject of this diploma thesis is experimental and numerical assessment of the heat transfer coefficients during condensation of water steam in simplified parts of an industrial steam turbine. This simplified part is a pipe with circular cross section, which is often used in simulations of processes inside the steam turbine. The first part of thesis describes theoretical basics of heat transfer during conduction, convection and condensation. The content of other chapters is description of methods used to determine heat transfer coefficient. These are: ex-perimental analysis performed on a measuring device and evaluated using finite element ana-lysis (FEA), computational fluid dynamics analysis (CFD) in ANSYS CFX and analytical calculations of heat transfer coefficients using mathematical models for condensation. Thesis is concluded by validation and comparison of obtained results.
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Condensing Steam Turbine
Žáček, Ondřej ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
The aim of the thesis „Condensing steam turbine“ is design of condensing steam turbine with uncontrolled extractions. The design is made according to assigned parameters. Balancing scheme of the turbine is defined at the beginning of the thesis. Then design of the regulation stage and reaction stages is accomplished. The calculation (thermodynamic and strength) is computed for mentioned two parts. For thermodynamic calculation is used ca/u method. In closing the design of the seal system is made.
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High-speed Steam Turbine
Vitovská, Michaela ; Trojan, Aleš (referee) ; Trojan, Aleš (referee) ; Fiedler, Jan (advisor)
The diploma thesis deals with the design of a high-speed steam turbine at given parameters provided by G-Team a.s. in Velka Bíteš. The introductory part briefly focuses on historical development of steam turbines, their operational principle and process of energy transformation. In the main part the machinery analysis of high-speed turbines has been carried out. In addition, a preliminary design of the number of turbine stages has been done. Furthermore, a thermodynamic calculation of flow channel for given input and output paramaters has been done together with the conception of construction design and turbogenerator layout. The final part introduces technical comparison of a one-stage and multy-stage high-speed steam turbine.
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Condensation heat exchanger beyond CHP unit
Sojka, Jiří ; Baláš, Marek (referee) ; Pospíšil, Jiří (advisor)
The aim of this thesis is to design the condensation heat exchanger for stationary engine running on natural gas. Flue gas condenser is designed for universal use of refrigerants (i.e. water or 35% fusion ethylene-glycol in water) and their working temperatures. The work includes theoretical, computational and design part. In the attachment is located the drawing documentation to flue gas condenser.
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Design of heating water heat exchanger, capacity 200 MW
Vašíček, Jakub ; Kól, Přemysl (referee) ; Baláš, Marek (advisor)
The thesis is focused on the design proposal of thermal heaters for heating water in heat-exchanger station with a total output of 200 MW. The aim of the work is conceptual design of heat exchangers, thermal and hydraulic design of individual heaters and preview of flow of mass and energy. The outputs of the work are written calculations, design drawing of one heater and design of a heater arrangement in exchanger station. The objectives of the work are filled completely. The work is focused on issues directly related to the actual design of heat exchangers, does not give a general overview of the topic. Thermal calculation is limited to the calculation of heat transfer surfaces for condensation of steam and condensate hypothermia.
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