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Pressure surge in the flowing gas simulation
Sedlmajer, Jakub ; Himr, Daniel (referee) ; Habán, Vladimír (advisor)
Creation of vacuum is very slow, energetically and technologicaly demanding process. Closing of valve is very simple and fast process which produces pressure surges when moving cylinder of fluid is stopped. The goal of this thesis is to find out, if it is possible to combine these processes. To reach this goal, 1D model of compressible gas flow and pressure surges in direct pipeline was made. Then follows experimental measurement evaluation and assessment of potential that the technology offers.
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Air valve as protection from water hammer
Sedlmajer, Jakub ; Machů, Tomáš (referee) ; Himr, Daniel (advisor)
The thesis deals with air valves, focusing on vacuum air valves. The theoretical part describes basic water hammer theory, especially low pressure problematics. Subsequently there are briefly explained any of usual water hammer protections, air valves function principles and differences in vacuum air valves constructions. The work is finished by measurement which evaluates reduction of pressure head according to use of this kind of protection.
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Automatic evaluation of fermentation degree of cocoa beans
Sedlmajer, Jakub ; Kůdela, Jakub (referee) ; Škrabánek, Pavel (advisor)
Standardní metodou zjištění výsledné kvality fermentace kakaových semen je tzv. cut-test. Při tomto testu je kakaové semeno rozříznuto na 2 poloviny, a následně je posouzeno vysoce kvalifikovaným odborníkem. Vzhledem k obrovským objemům zpracovávaného kakaa je automatizace tohoto procesu pomocí strojového vidění nevyhnutelná. Tato práce se zabývá návrhem a vytvořením softwarových nástrojů, které to efektivně umožní.
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Pressure surge in the flowing gas simulation
Sedlmajer, Jakub ; Himr, Daniel (referee) ; Habán, Vladimír (advisor)
Creation of vacuum is very slow, energetically and technologicaly demanding process. Closing of valve is very simple and fast process which produces pressure surges when moving cylinder of fluid is stopped. The goal of this thesis is to find out, if it is possible to combine these processes. To reach this goal, 1D model of compressible gas flow and pressure surges in direct pipeline was made. Then follows experimental measurement evaluation and assessment of potential that the technology offers.
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Air valve as protection from water hammer
Sedlmajer, Jakub ; Machů, Tomáš (referee) ; Himr, Daniel (advisor)
The thesis deals with air valves, focusing on vacuum air valves. The theoretical part describes basic water hammer theory, especially low pressure problematics. Subsequently there are briefly explained any of usual water hammer protections, air valves function principles and differences in vacuum air valves constructions. The work is finished by measurement which evaluates reduction of pressure head according to use of this kind of protection.
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Economic analysis of company Mlýn Havlíčkův Brod, spol. s r.o.
Sedlmajer, Jakub ; Štamfestová, Petra (advisor) ; Kubíček, Aleš (referee)
The main goal of the Master's thesis is to create complex economic analysis of company Mlýn Havlíčkův Brod, Ltd. for period from 2007 to 2013. This economic analysis will consist of evaluation of economic and financial situation of chosen company, of analysis of its competitive position, its strengths and weaknesses and also of its comparison with few competitors. There will also be analysis of industry, where chosen company operates. The reader of this thesis should gain knowledge about mill products market in Czech Republic as well as about way of working and about results of company Mlýn Havlíčkův Brod. The thesis itself is then divided into two parts, theoretical part, which will summarize all models, methods and indexes used and practical part, which will be focused on economic analysis itself and on interpretation of its results.
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