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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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Gray water heat exchangers
Devečka, Viktor ; Tuhovčák, Ján (referee) ; Fišer, Jan (advisor)
In the present development of building industry and increasing demands for convenience and comfort of living, energy demands of buildings are also getting higher. After heating, the second largest costs are for the production of hot water. Use of hot water produces grey water with high residual thermal energy, which is drained into sewage. The heat recovery system of grey water solves this heat loss problem. This paper deals with the possibilities of using the heat of grey water. It is aimed mainly at the use of heat energy from grey water to reduce the cost of preparation of hot water. The paper analyzed the energy consumption in buildings. Subsequently, it focuses on the methods of using heat from grey water. It familiarizes with the methods of thermal energy recovery and describes drain water heat recovery system. Drain water heat recovery systems' producers from Czech and Slovak market are named. In conclusion, there are two modeling studies evaluating heat recovery system's efficiency.
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Possibilities of energy savings
Palkovič, Peter ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
The work is mainly engaged in electricity savings opportunities in fair housing unit 3+1 in the locality Brno - Černá Pole due to confusion classic appliances for more efficient appliances with lower power consumption. In the introductory part of the thesis is a description of the energy label for household appliances with calculations for inclusion in the energy classes according to the most recent applicable regulations, directives and regulations of the Ministry of Industry and Trade. The next section describes the structure of electricity prices coupled with monthly fees and possible financial savings in changing the current supplier for another. In the last part of the thesis describes the specific consumption of each appliance is switched on and in StandBy mode and replacing them with more efficient appliances. Finally, the representation of the return on investment for those changes, calculated total annual consumption and costs for energy consumption in apartment 3+1.
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Heat recovery ventilation unit
Balák, Jan ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
This bachelor thesis will inform readers about residental buildings ventilation posibilities, higyenical standarts of ventilation, sorting of heat recovery units used for heat recovery in residental buildings. Moreover, specific house will be choosen and its ventilation demands will be calculated. Than conveniend ventilation and heat recovery equipment will be search, because of optimalization of ventilation and heat losses.
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Electric cars heating systems
Kolomazník, Milan ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
The object of this bachelor thesis is a research concerned the electric vehicle interior heating ways. The basic terms connected with the electromobilism general problems are described at the beginning. The following part outlines the current problems that impede the wide expansion of these vehicles. The thesis sums up the direct methods of the heating using electricity and the alternative way, which is a self-sufficient heating using an internal combustion engine. It also assesses the applicability of heat loss emerging in the electric components, such as an electric motor, a frequency converter or an accumulator. Based on these findings, the various constructional drafts were created including a list of their strengths and weaknesses. The conclusion draws a comparison between each of these constructional solutions.
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Environmental control system of aircraft cabin
Fojtlín, Miloš ; Hejčík, Jiří (referee) ; Fišer, Jan (advisor)
In this research work available information about air-conditioning systems of actual airliners are processed. These systems solve in complexity aircraft cabin microclimate modification into form comfortable and acceptable for the human body (ECS – enviromental control system). The work also covers ECS subsystems description. It explains their function, thermalmechanical principle, different possibilities of their realization and overall ECS function. Examples of ECS negative impact on other aircraft systems are also mentioned. Afterwards, real schemes of ECS built on board are sketched. The paper also presents reasons of ECS introduction, concrete requirements to cabin microclimate out of consideration to safe stay of human bean on board in different flight procedures. Simultaneously technical obstacles and limitations of ECS are shown. In conclusion need of correct ECS function is highlighted.
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Family house energy requirements audit
Němec, Miloš ; Hejčík, Jiří (referee) ; Fišer, Jan (advisor)
The bachelor’s thesis deals with a comparison of several modifications of the terraced house, which should reduce the final energy requirements. For this purpose National calculating tool is applied, which complies with Czech government regulation no. 148/2007 Coll. In conclusion, individual modifications are evaluated accordely to energy savings and simple return on investments.
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Photovoltaic power systems for stand-alone applications
Hrňa, Lukáš ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
Topic of Bachelor’s thesis is descriptions photovoltaic power systems and their parts. It describes photovoltaic power system for stand-alone applications. In Bachelor’s thesis make photovoltaic power system for cottage. It characterizes basic components for build-up, basic aspect for determination right component and talk about immunity photovoltaic power system in long time.
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Energy performance of block of flats
Jakeš, Martin ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
This bachelor thesis was created for comparing energy performance of common slab block before energy saving reconstruction and after it. Five floors slab blocks are situated into slab block estate. During reconstruction all wooden windows were changed to plastic-framed windows. Walls were insulated by using polystyrene foam boards. The bachelor thesis is divided into several parts. Through the thesis general requirement of minimizing of energy consumption is performed by standardized calculation. Consequently is possible to compare energy consumption before energy saving reconstruction and after it.
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Family house energy requirements audit
Halata, Maxmilián ; Hejčík, Jiří (referee) ; Fišer, Jan (advisor)
The bachelor’s thesis is focused to possibilities of using National calculating tool of buildings energy requirements according to Czech government regulation no. 148/2007 Sb. The tool was applied to calculate energy requirements of chosen family house. Several types of house modifications which can reduce energy requirements are proposed based on results of the audit. Each modification of the house is analyzed from the energetic, construction and economic point of view.
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