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Aircraft windshield blowing: solution and design possibilities
Šamša, Petr ; Fišer, Jan (referee) ; Jícha, Miroslav (advisor)
My thesis is considering with aircraft windshield blowing for airplanes designed according to CS-23 regulation. The first part introduces the size of precipitation clearing area in connection with CS-23 regulation and report SAE AIR805C. Next chapter describes a few possible design solutions which can be potentially used for windshield precipitation. There are also other methods analysed in that part. There are not only the casual systems like windshield wipers but some more rare or new technologies too. It can be some fluid repellent surfaces or blowers in that category. The third part deals with jet blast system in detail. There will be a design calculation for airflow conditions which are important for the correct function. The last quarter of this thesis mentions the experiment what should compare the theoretical computations from the third part with the real values.
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Optimization of the cleaning of the heating surfaces on the coal boiler K1 in Plzeňská teplárenská
Kostrhounová, Petra ; Tomáš, Zdeněk (referee) ; Baláš, Marek (advisor)
This master’s thesis deals with the assessment of cleaning of heat transfer surfaces of a coal-fired steam boiler. The first part is devoted to the description of the knowledge about the formation of deposits, the deposits influence on the operation of the plant and cleaning mechanisms. Then, basic information on the operation, design and method of removal of deposits of the K1 boiler is summarised. Based on this knowledge, operating data from four summer months of boiler operation are analysed to determine the fouling condition of the boiler surfaces and over fifty graphs are produced showing the evolution of selected operating values between each cleaning cycle of the convective and plate superheater as well as air preheater. Subsequently, a parametric model of the K1 boiler at 60 % output is created in PPSD, which allows a more detailed analysis of the boiler operating characteristics and is used for a more thorough interpretation of the operating data. In addition, two models for higher boiler outputs and three theoretical models of operating conditions with different levels of surface fouling were developed. To verify the accuracy of the developed model, a calculation of heat transfer through the outlet superheater is performed. Finally, the calculation of steam consumption for sootblowing is performed.
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Optimization of the cleaning of the heating surfaces on the coal boiler K1 in Plzeňská teplárenská
Kostrhounová, Petra ; Tomáš, Zdeněk (referee) ; Baláš, Marek (advisor)
This master’s thesis deals with the assessment of cleaning of heat transfer surfaces of a coal-fired steam boiler. The first part is devoted to the description of the knowledge about the formation of deposits, the deposits influence on the operation of the plant and cleaning mechanisms. Then, basic information on the operation, design and method of removal of deposits of the K1 boiler is summarised. Based on this knowledge, operating data from four summer months of boiler operation are analysed to determine the fouling condition of the boiler surfaces and over fifty graphs are produced showing the evolution of selected operating values between each cleaning cycle of the convective and plate superheater as well as air preheater. Subsequently, a parametric model of the K1 boiler at 60 % output is created in PPSD, which allows a more detailed analysis of the boiler operating characteristics and is used for a more thorough interpretation of the operating data. In addition, two models for higher boiler outputs and three theoretical models of operating conditions with different levels of surface fouling were developed. To verify the accuracy of the developed model, a calculation of heat transfer through the outlet superheater is performed. Finally, the calculation of steam consumption for sootblowing is performed.
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Aircraft windshield blowing: solution and design possibilities
Šamša, Petr ; Fišer, Jan (referee) ; Jícha, Miroslav (advisor)
My thesis is considering with aircraft windshield blowing for airplanes designed according to CS-23 regulation. The first part introduces the size of precipitation clearing area in connection with CS-23 regulation and report SAE AIR805C. Next chapter describes a few possible design solutions which can be potentially used for windshield precipitation. There are also other methods analysed in that part. There are not only the casual systems like windshield wipers but some more rare or new technologies too. It can be some fluid repellent surfaces or blowers in that category. The third part deals with jet blast system in detail. There will be a design calculation for airflow conditions which are important for the correct function. The last quarter of this thesis mentions the experiment what should compare the theoretical computations from the third part with the real values.
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