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Calculation of Brown Coal Boiler for SCR Application
Mizerovský, Karel ; Bursa, Robert (referee) ; Skála, Zdeněk (advisor)
This Master´s thesis deals with the verification calculation of boiler which burns brown coal for the application of the selective catalytic reduction method. The thesis is divided into several parts. In the first of all is performed the calculation of the furnace chamber which involves stoichiometrics calculations and enthalpy calculations of air and flue gas. In the second part the heat balance of the boiler, the boiler losses and the thermal efficiency are determined. After all the heating surfaces are calculed for the verify the dimensions. In the conclusion of the thesis we looked for the temperature range which is used for the SCR application. Then the improvements for the appropriate temperature range are designed.
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Methods for separation of ammonia from waste water
Zendulka, Štěpán ; Touš, Michal (referee) ; Vondra, Marek (advisor)
The main concern of this thesis is to provide a comprehensive overview of methods for ammonia separation from wastewater that have been discovered so far. The elementary differentiation is based on technological principle – biological and physical-chemical. Also, the thesis examines all methods from the „conventional or progressive“ point of view, which shows if the method is commonly used or is still in an experimental set up. Furthermore the focus is on classification of methods on „eliminating ammonia“ or „recovering ammonia“. This is closely connected to the economical aspects of each method which is also one of concerns of this thesis. Some of the methods are described with further details as there has been a recent progress and upgrading of these methods. It is air stripping and membrane methods. More attention is also provided to bioelectrochemical systems as it is proclaimed as one of the most suitable candidates for usage in the future. Last part of this work compares selected methods in terms of the ammonia elminiation or recovery efficiency and also power demand.
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The gas monitoring equipment in breeding of edible insects
Chlumecký, Karel ; Skácel, Josef (referee) ; Adámek, Martin (advisor)
Bachelor’s thesis deals with monitoring of edible insects. The most monitured element will be dangerous gases. In the first part will be discussed the life cycle of edible insects and associated ecological consequences. Another part is description of measuring non-electric variables. This knowledge will be useful in design of breeding box in practical part of bachelor’s thesis. Design contains selections and description of used components and their locations on breeding box. Breeding box is managed by microcontroller ESP32 from Espressif family. Practical part contains first results of measuring and program for microcontroller. The results are in the form of a graph. Breeding box can be used for most terrarium animals.
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Disposable sensor of ammonium for intelligent packaging
Nentvichová, Aneta ; Kořínková, Radka (referee) ; Veselá, Mária (advisor)
This diploma thesis is focused on the problematic of the smart packaging and deals with the preparation of disposable ammonia sensors/indicators and the subsequent color measurement of prepared sensors/indicators using the CIE L* a* b* color space. The theoretical part of the diploma thesis focuses on active and intelligent packaging, using ammonia sensors/indicators. The emphasis is placed on the main components of the sensor/indicator, i.e., chitosan as a polymer and curcumin as a dye. The theoretical part also includes the problematic of meat degradation, which plays a very important role in this thesis. The experimental part was divided into two parts. The first part was to prepare layers that will respond in different colors based on the concentrations of ammonia. Prepared layers were sensitive to ammonia across all concentrations, and based on this result, ascorbic acid was applied to compositions to achieve a calibration retention of the selected amount of ammonia. The second minor part of the experiment was the application of selected layers to packages with real meat.
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Methods for separation of ammonia from waste water
Bajzík, Martin ; Touš, Michal (referee) ; Vondra, Marek (advisor)
The bachelor thesis is focused on the methods of separation of Ammonia from the wastewater. The introduction of the thesis defines Ammonia, its characteristics, natural sources, production and utilization of it. The main part of the thesis describes and rates the twelve methods used for the separation of Ammonia from the wastewater. There is a description of a principle, the advantages and disadvantages of the methods in consideration of their utilization in practice, by each technology. In the experimental part of the thesis are described the outcomes of efficiency measurements of the stripping device and their comparison with the results stated in scientific literature. The thesis represents the primar overview and introduction into the theme for laymen and experts, who are unfamiliar with the topic and would like to examine it.
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Innovation of experimental e-nose for odor analysis in the food industry
Janošíková, Pavla ; Búran, Martin (referee) ; Adámek, Martin (advisor)
This work deals with innovation of the program for processing data acquired from sensory device known as electronic nose. The work introduces possibilities and utilization of a electronic nose. Furthermore it introduces some of the best known analysis for odor recognition that are used mainly in the food industry focusing on principal component analysis. The work focus on creation of mobile application that process data from a simple electronic nose and on improvement of ammonia and CO2 measurement accuracy. The program must also allow wireless data reception, their processing and storage.
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Direct cooling systems in food processing plants
Kotásek, Petr ; Vlček, Petr (referee) ; Formánek, Marian (advisor)
Diploma thesis deals with direct cooling systems in food processing plants. The work focuses on the description of the components of the refrigerant cycle, with emphasis on the choice of refrigerant. The result is a design of direct cooling system in the food factory in the variants with refrigerant R404A and R717. The work describes the advantages and disadvantages of various options. The work includes an experimental section which deals with the measure-ment and processing of the actual values of the refrigerant cycle and the comparison of two cold sources.
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Sensor for long-term control of food quality
Navara, Róbert ; Búran, Martin (referee) ; Adámek, Martin (advisor)
This final thesis focuses on the problems related to the lifespan of food and it’s monitoring. The first chapter is focused on the food businesses and on the creation of system HACCP which those businesses need to implement. Next chapter talks about factors which have the biggest impact on the lifespan of meat. The chapter about technologies used for monitoring of health safety of food talks about most used and most viable sensing tags used for this purpose. The following chapter describes microcontroller ESP32, it’s pros, it’s cons and it’s programmability. The practical part revolves around the realization of a printed circuit board, fitted with a microcontroler ESP32, a relative humidity and temperature sensor HDC1080 and an ammonia sensor MiCS-6814, which as a whole along with designed firmware and software work as a sensor tag, which is capable of measuring, saving and exporting data based on a configuration of an user.
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Efficiency of selected chemical reactions on the membrane reactor
Liman, Martin ; Mirko,, Dohnal (referee) ; Svěrák, Tomáš (advisor)
This bachelor’s thesis focuses on the efficiency of reactions happening on the membrane reactor or also known as a contactor. The theoretical part contains basic insight into the theories needed to understand chemically physical phenomena on membrane contactors. Furthermore, the theoretical part serves as a recherche for modern membrane contactor technologies, including the examples of their usage. The practical part consists of a description of the membrane contactor that is used, the methodology of the measuring and the measured data output. Afterwards, the results are being talked over and developed further to the possible use in the current technologies.
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