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Utilization of solar energy for heating and ventilation – solar façades
Mazáč, Ondřej ; Fišer, Jan (referee) ; Jaroš, Michal (advisor)
The objective of bachelor´s thesis „The Usage of Solar Energy for Heating and Ventilation – The Solar Facades“ is the description of nowadays used types of solar facades, the examination of their technical parameters and the estimation of theoretical project on chosen building. The first part is focused on general description of solar radiation, the possibility of its usage in the solar system and and the explanation of its principle. The division of solar facades in terms of their basic criteria is described in the next part. The last part deals with particular estimation of buildings which uses the passive solar system in form of the solar Facade.
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Apparatus for measuring the thermal resistance of the gloves
Pelikán, Jakub ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
This thesis deals with common problem health protection at work. Namely hand protection during the work in very cold environment. It’s an analysis of materials suitable for apparatus used for measuring the thermal resistance of the gloves. There was analysed a range of materials. Every single sample was tested for heat conductivity and afterwards was assessed the suitability of materials. Heat was generated by electricity. Ocured heat fields was assessed with thermocamera. After performed experiments of carbon fiber we haven’t reached any satisfying results which we could use for manufacturing of this device. On the other hand kapton film has given very interesting results which we would recommend eventually. Kapton film needs to be modify according to the method listed in the conlusion. This thesis gives us a clear overview and inspiration for additional research of this device. It finds it’s place in research facilities and companies manufacturing protective clothing.
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Design and measurement of a small induction motor
Fišer, Jan ; Klíma, Jiří (referee) ; Mach, Martin (advisor)
This bachelor thesis deals with design and measurement of a small induction motor. The introduction describes a structure and an operating principle of the induction motor. The following part deals with analytical calculation of three-phase induction motor‘s properties. Next are executed an analytical calculations and a finite element method calculations by the Maxwell software. In the end are these calculations compared with results from measurement.
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Space heating and ventilation in a bungalow family house
Menšík, Marek ; Fišer, Jan (referee) ; Charvát, Pavel (advisor)
This diploma thesis deals with design of ventilation and heating of bungalow single-storey house. The work is divided into three parts. In the first part is presented the design of the house with calculation of heat losses. The second part deals with the design, calculations and regulation of the heating of the house. In the third part there is designed a system of forced ventilation for the house.
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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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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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EV vehicle cabin thermal management strategy in hot and cold climates
Matušková, Lucie ; Charvát, Pavel (referee) ; Fišer, Jan (advisor)
The goal of the work is to conduct an experiment to measure the temperature at which optimal thermal comfort is achieved. The experiment is carried out in a climate chamber, where constant climatic conditions acting on the vehicle can be ensured. The iHVAC measuring system is used to measure thermal comfort. Then to compare the values with the previous measurement that took place for other vehicles. Part of the work is devoted to research that describe the issue of thermal management of vehicles.
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Application of the Life Cycle Assessment (LCA) method to passenger cars
Šándor, Kristián ; Mišík, Ondrej (referee) ; Fišer, Jan (advisor)
The electrification of personal transport is an intensely discussed and relevant topic in 2023. The motivation behind this master thesis was to compare the lifetime energy consumption of vehicles equipped with internal combustion engines, battery-powered electric systems, and fuel cells. The theoretical part of this master thesis includes the introduction and explanation of the method by which a product lifecycle is assessed, known as LCA. The dissertation includes a chapter detailing the main components of automobiles, followed by a chapter which has calculations the energy consumption of production, operation, and recycling or destruction of the automobiles. The outcome of the theoretical part shows that the lifecycle of a battery-powered electric car is the least energetically costly, followed by internal combustion cars, and fuel cell cars being the most energy costly. The practical part of this master thesis involved a physical decomposition of a vehicle with an internal combustion engine with the aim of obtaining the material composition of its components and applying the LCA method on the vehicle Skoda Octavia III. The thesis sparks future research and eco-friendly alternatives in personal transportation.
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Heat transfer from the surface of the human body - validation of a CFD thermal manikin model
Kuruc, Jan ; Pokorný, Jan (referee) ; Fišer, Jan (advisor)
This master thesis is focused on CFD simulation of heat transfer from a thermal manikin in a calibration environment and its subsequent validation based on the experiments already performed in the master thesis of Ing. Fojtlín and Ing. Hrubanová. The main objective of the work is to find and test a suitable combination of physical models and set boundary conditions in the simulation model so that the actual heat transfer and airflow processes from the validation experiments are faithfully simulated. In the course of the work, 7 cases were simulated based on individual measurements made during the experiments. The calculated heat transfer coefficients of the thermal mannequin segments for each simulated case can be considered as the main results of the simulation. For the experiment of Ing. Fojtlín, these are the heat transfer coefficients by radiation and convection. For the experiment of Ing. Hrubanová, the total heat transfer coefficients for a manikin with five selected clothing assemblies were determined. Validation was performed by comparing the simulated and experimentally determined values of heat transfer coefficients. Based on the comparison, the developed simulation model could be declared validated.
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