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Characteristics of fan cooling towers
Joska, Jakub ; Milčák, Pavel (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with the problematics of fan cooling towers. The very first part of the text is research, focusing mainly on the theory of cooling and the function of fan cooling towers in general. The following chapter deals with the water resource management of the Dukovany nuclear power plant and the specification of its objects of forced draft cooling towers. The second part describes a computational model created to determine the cooling performance of these towers under the given input conditions. In the following chapters, the results from the computational model are compared with the available data from warranty measurements and with the provided characteristics. The final pages deal with the study of the influence of changes in input parameters on the cooling performance and the research of the behavior of the cooling towers under extreme weather conditions.
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Rankin cycle for waste heat recovery of internal combustion engines
Kučinský, Josef ; Fiedler, Jan (referee) ; Brázdil, Marian (advisor)
This bachelor thesis deals with Rankine cycle as a method of waste heat recovery for internal combustion engine. Firstly, internal combustion engine and some technologies on waste heat recovery are described simply. Secondly, Rankine cycle and its utilization in automobiles are overviewed. At the end, there are summarized results from simulations and experiments regarding the issue. It was stated in a conclusion that in case of waste heat recovery in automobile, Rankine cycle is a promising technology but it is not ready for wide application yet.
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Combined heat and power generation
Hlaváč, Ivan ; Zálešák, Martin (referee) ; Klimeš, Lubomír (advisor)
The bachelor thesis deals with the power generation by means of a combined gas-steam cycle. In the first part of the work, an overview and description of the combined cycle as well as of the Brayton cycle and the Rankine cycle are provided. The second part of the work focuses in the thermal analysis of the cycles. As a part of the work, a computer program was created, which allows for such thermal analysis of the combined cycle.
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Heat exchangers, influence of cycle efficiency
Khůlová, Jitka ; Štěpánová, Lenka (referee) ; Fiedler, Jan (advisor)
The master's thesis deals with district heat exchangers in a thermal steam cycle of combined heat and power plants and with types of condensate cascades in the multilevel heating systems. Calculation of the thermal efficiency of electricity generation is provided for the investigated thermal cycle, which was modified for three different types of cascades. Besides that, a comparison of useful electric power and electricity generation through one year period of working is made. A significant part of the work is devoted to the design of district heat exchangers, including the calculation of thermal power and heat transfer area. Main dimensions are proposed for each exchanger together with a basic drawing.
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Rankine cycle with water steam for power generation
Uhříček, Michal ; Mauder, Tomáš (referee) ; Klimeš, Lubomír (advisor)
The Rankine cycle with water steam is the basic thermal cycle used in power generation for producing electricity. Through this cycle thermal energy (of any source) is transformed into shaft work, which then generates electricity. Therefore, the aim is to achieve the highest efficiency of this transformation with losing as little of the usable energy as possible. This bachelor thesis is focused on describing the general thermodynamics cycle, the basic Rankine cycle and Rankine cycles with modifications, which help to increase the thermal efficiency. The practical part of this thesis is dedicated to programming the script in the MATLAB programming environment for easy thermodynamic analysis of the basic ideal Rankine cycle.
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Characteristics of fan cooling towers
Joska, Jakub ; Milčák, Pavel (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with the problematics of fan cooling towers. The very first part of the text is research, focusing mainly on the theory of cooling and the function of fan cooling towers in general. The following chapter deals with the water resource management of the Dukovany nuclear power plant and the specification of its objects of forced draft cooling towers. The second part describes a computational model created to determine the cooling performance of these towers under the given input conditions. In the following chapters, the results from the computational model are compared with the available data from warranty measurements and with the provided characteristics. The final pages deal with the study of the influence of changes in input parameters on the cooling performance and the research of the behavior of the cooling towers under extreme weather conditions.
|
|
|
Combined heat and power generation
Hlaváč, Ivan ; Zálešák, Martin (referee) ; Klimeš, Lubomír (advisor)
The bachelor thesis deals with the power generation by means of a combined gas-steam cycle. In the first part of the work, an overview and description of the combined cycle as well as of the Brayton cycle and the Rankine cycle are provided. The second part of the work focuses in the thermal analysis of the cycles. As a part of the work, a computer program was created, which allows for such thermal analysis of the combined cycle.
|
|
|
Rankine cycle with water steam for power generation
Uhříček, Michal ; Mauder, Tomáš (referee) ; Klimeš, Lubomír (advisor)
The Rankine cycle with water steam is the basic thermal cycle used in power generation for producing electricity. Through this cycle thermal energy (of any source) is transformed into shaft work, which then generates electricity. Therefore, the aim is to achieve the highest efficiency of this transformation with losing as little of the usable energy as possible. This bachelor thesis is focused on describing the general thermodynamics cycle, the basic Rankine cycle and Rankine cycles with modifications, which help to increase the thermal efficiency. The practical part of this thesis is dedicated to programming the script in the MATLAB programming environment for easy thermodynamic analysis of the basic ideal Rankine cycle.
|
|
|
Heat exchangers, influence of cycle efficiency
Khůlová, Jitka ; Štěpánová, Lenka (referee) ; Fiedler, Jan (advisor)
The master's thesis deals with district heat exchangers in a thermal steam cycle of combined heat and power plants and with types of condensate cascades in the multilevel heating systems. Calculation of the thermal efficiency of electricity generation is provided for the investigated thermal cycle, which was modified for three different types of cascades. Besides that, a comparison of useful electric power and electricity generation through one year period of working is made. A significant part of the work is devoted to the design of district heat exchangers, including the calculation of thermal power and heat transfer area. Main dimensions are proposed for each exchanger together with a basic drawing.
|
|
|
Rankin cycle for waste heat recovery of internal combustion engines
Kučinský, Josef ; Fiedler, Jan (referee) ; Brázdil, Marian (advisor)
This bachelor thesis deals with Rankine cycle as a method of waste heat recovery for internal combustion engine. Firstly, internal combustion engine and some technologies on waste heat recovery are described simply. Secondly, Rankine cycle and its utilization in automobiles are overviewed. At the end, there are summarized results from simulations and experiments regarding the issue. It was stated in a conclusion that in case of waste heat recovery in automobile, Rankine cycle is a promising technology but it is not ready for wide application yet.
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