|
|
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.
|
|
|
Heating curve calculation
Štěpánek, Jindřich ; Charvát, Pavel (referee) ; Hejčík, Jiří (advisor)
The bachelor thesis examines the question of heating, more precisely heating depending on climatic conditions of the environment in which the heated entity is situated. It summarizes the information necessary for calculating equithermal dependency as well as the information about the types of heat loss of buildings and their calculation. There is also basic information about the heating elements, their types and characteristics. Using all the information, a model calculation of one point weather compensation curve for the chosen reference room is determined. Further, another way how to get the heating curve is mentioned there, its model calculation is done and the advantages and disadvantages of this method are described.
|
|
|
Methods of moisture separation
Pokorný, Vojtěch ; Pešek, Martin (referee) ; Hejčík, Jiří (advisor)
General properties of moist air are written in introductory part of this final thesis. It includes description of moisture, this is important for determination the state in which the air is. The main part of this thesis are analysis methods, which are leading to reduce moisture in the air. These processes are illustrated in the Molliere diagram. In the final part are the moisture separation systems, which we can use in practice.
|
|
|
Heat storage in solar thermal systems
Mokriš, Lukáš ; Hejčík, Jiří (referee) ; Charvát, Pavel (advisor)
In this bachelor’s thesis are described methods of heat storage in solar thermal systems. Solar energy is retrieved in form of solar radiation, that is processed and stored in the form of sensible heat of solid materials and liquids, as heat of fusion of some material or as chemical heat, which is created during reversible chemical reactions.
|
|
|
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.
|
|
|
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.
|
|
|
Air filtration methods
Valenta, Jiří ; Pech, Ondřej (referee) ; Hejčík, Jiří (advisor)
achelor thesis provides an overview of the methods used in industrial air filtration. The work consists of the 5 main parts of dry and wet mechanical separators, electric precipitators, fabric filters and filter media.
|
|
| |
|
|
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.
|
|
|
Solar production of electricity
Špiláček, Michal ; Hejčík, Jiří (referee) ; Charvát, Pavel (advisor)
In this bachelor’s thesis are mentioned basic methods how to convert solar radiation into electric energy. Shortly introducing the origin of solar radiation and its subsequent lightening of the Earth surface. Then is here the history of photovoltaic and principle of function of photovoltaic cells. In next chapters are mentioned a variety of cells, construction of photovoltaic panels and methods, how to increase their productivity. In the following chapters are mentioned basic thermal cycles used for indirect conversion of solar radiation into electric energy, their usage in various applications. At last, here are mentioned ways of using the gained electric energy both from direct and indirect conversion.
|
guest ::
