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Study of transverse velocity field in the vicinity of rotating wheel with assumption of forced convection of disc brake
Regner, Dominik ; Polanský, Jiří (referee) ; Štefan, David (advisor)
The master thesis deals with the influence of a local change of temperature due to advection from disc brake to axial velocity field close to the rotating wheel of a car. The second goal is to set parameters applicable to various wheel discs and study of the influence of these parameters to aerodynamical properties of car and thermodynamical properties of the disc brake. The thesis is numerically executed in StarCCM+. The first part focuses on theoretical background about the numerical solution and current status of research. There are described disc parameters, geometry input and solver settings in the second part. The final part deals with a comparison of velocity fields for isothermal and thermodynamical model and evaluates the influence of parameters to velocity field, aerodynamical drag and thermodynamical performance of the brake.
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Analysis of the heat utilisation from biogas stations for heating
Kareš, Martin ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
This bachelor thesis deals with the analysis of the use of heat from biogas stations. The first part describes the production of biogas, its combustion efficiency and the development of energy production thus obtained. In the second part it deals with individual solutions of the application of heat produced and in the last chapter it analyses the balance of the specific solution of heat transfer and its impact on the environment.
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Studium vedení tepla metodami počítačového modelování
STANĚK, Jakub
This diploma thesis is concerned with a problem of the line heat simulation by different kinds of materials with computer - aided COMSOL Multiphysics. The thesis is composed of three thematic units. In the first part there is a line heat principle shortly described and his basic physical quantities which are necessary for correct defining of the simulation. The second part is concerned with the software, its function, auxiliary modulus and a description of single actions, which are essential for making of the model. In the last part there is the whole process of the multiphysical task creation that enables to simulate line heat in a specific material in reliance on time.
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Assessment of the measure reducing heat loss residential building
Vašíř, Jan ; Chýlek, Radomír (referee) ; Baláš, Marek (advisor)
Objectives of this thesis are analysis of measurements to decrease energetical consumption of buildings and efficiency calculation of measurements made to concrete apartment building. Thesis is thematically devieded into for parts. First part is theory determinating baisic therminology. Heat conduction and its meaning for heat loss in houses is described in this part. In second part is described meaning of thermal insulation and contains analysis of market with materials including suitability of materials for thermal insulation and windows. In third part is described house which is examined in the thesis. Last fourth part contains calculation consumption of heat and examines why was not fulfiled assuption of designed savings. Financial calculation of how much money was saved and when the investmen was retruned. In this part is also estimated mass of CO2 gas emited by thermaly insulated house versus state in which house is not thermly insulated.
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Increasing the energy efficiency of industrial heating plant
Spišák, Lukáš ; Lisý, Martin (referee) ; Kracík, Petr (advisor)
This bachelor thesis consists of two parts. The introductory chapters are devoted to the basic description of cogeneration and trigeneration technologies, focusing on the description of cogeneration units and cooling devices. The second part of the thesis compares two specific ways of using cogeneration units and gas boilers in the CHEMOSVIT ENERGOCHEM a.s. in the town Svit. Subsequently, both variants are evaluated energetically and economically.
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Topical and Advanced Possibilities of Heating by Thermal Pumps
Božek, Michal ; Brázdil, Marian (referee) ; Lisý, Martin (advisor)
The bachelor's thesis is focused on search of one of the many methods of home heating systems, specifically on heat pumps. The first part describes the structure of heat pumps, the principle of how they work, main types, their two most important parameters and comparison of them to other systems of heating. The second part contains comparison of individual heating systems from economical point of views on a selected model house.
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Design of Fireplace Stoves
Crhová, Veronika ; Sládek, Josef (referee) ; Sovják, Richard (advisor)
This Bachelor’s thesis deals with designing a hot air stove for solid fuels. The stove is designed to accumulate a huge amount of heat and to heat the space. The main idea is to work with unusual material. The concept is build on simple design and function. The thesis is composed of current market trends, design process and technical parameters.
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Temperature measurement of a machine tool
Novotný, Petr ; Merenus, Ondřej (referee) ; Hermanský, Dominik (advisor)
The aim of this work is to get acquainted with the problems of temperature measurement, various types of non-contact temperature measurement and types of non-contact gauges. It also tries to explain the basic concepts and knowledge from the field of machine tools and their thermal load. Part of the thesis is to test this knowledge using measurements at Intemac Solutions s.r.o. The acquired knowledge is then evaluated using graphs and tables.
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