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Heat sources for nearly zero-energy buildings
Zábovský, Ján ; Fojtlín, Miloš (referee) ; Hejčík, Jiří (advisor)
This bachelor's thesis deals with the topic of heat sources for nearly zero energy buildings. It is divided into three parts. The first part of the thesis describes the term „nearly zero energy buldings“ and its differences across European union and especially Czech and Slovak republic. The next part summarizes various types of systems and devices, which are directly or indirectly involved in maintaining interior thermal comfort. It also assesses their applicability to buildings with nearly zero energy consumption. The final part of the thesis consists of the design of several input parameters for the selected model house. A suitable heat source is suggested for each of the variants.
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Energy self sufficient house
Hrncsjarová, Hana ; Talanda, Tomáš (referee) ; Chovancová, Michaela (advisor)
The bachelor’s thesis deals with the issue of energy self-sufficient houses. The search of requirements and technical applications usable in the design of energy self sufficient house is presented. There are some of the legislation relating to the issue too. Thesis includes also the examples of implemented projects in the Czech Republic and the design of modifications of the particular house for the possible energy self-sufficiency.
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Influence of the building envelope structures on the expenses associated with the operation
Baďurová, Monika ; Bradáč, Albert (referee) ; Čech, Josef (advisor)
The thesis deals with the assessment of the current proposal for pension envelopes along with proposing alternative plans with emphasis on reducing heating costs. The first section describes the types of buildings according to heating demand and output energy performance of buildings. Work also deals with a list of different variants of thermal insulation materials and design options outer insulation of the building envelope. It outlines fire characteristics of building materials and options of construction budget. The second part is devoted to a specific pension house in the Old Rejviz for which there are designed in three variants of insulation. These variants are then reviewed in terms of thermal insulation. Through research will bedetermined price of implementation of proposed insulation options together with the costs of operation of the pension. The conclusion is to evaluate each proposed version of insulation of the building envelope associated with the economic return on investment.
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Impact Assessment of Selected Parameters of Residential Buildings on Their Energy Performance
Vendlová, Lucie ; Rubina, Aleš (referee) ; Kabele,, Karel (referee) ; Papež,, Karel (referee) ; Hirš, Jiří (advisor)
The work deals with the impact assessment of selected parameters of residential buildings on their energy performance. Within the application of the theory of statistics database of selected residential buildings is analyzed in terms of different features that characterize it. In particular, the thermal insulating properties and individual sub-items in the energy balance are analyzed. Then the measured rate dependence of selected parameters affecting energy performance is examined using correlation and regression analysis. The results are applied in the development of computational tools for evaluating energy flows in the building.
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Wind energy
Král, Ondřej ; Brázdil, Marian (referee) ; Kracík, Petr (advisor)
This bachelor’s thesis discuss wind energy sector. The first chapter focuses on basic construction types of wind power plants, their classification and description of the main parts. Basic physical principles by which electrical energy is produced, presents the next section, which deals with the lifetime of wind turbines, too. The final chapter describes the development of wind power in history, wind energy is here compared with other energy sources, and finally it is dedicated to matter of wind turbines’ energy payback.
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Energy Performance of sewerage networks
Žďára, Jan ; Hluštík, Petr (referee) ; Raclavský, Jaroslav (advisor)
First section of this master thesis is background research of energy demand of sewer systems. Intrudoctory chapter explains basic concepts. Second chapter is dealing with Czech and European legislation concerning energy consumption of water service. Third chapter describes energy demand of sewer systems. In this chapter there are described conventional gravity, vakuum and pressure sewer systems and components with major power consumption. Fourth chapter describes actual state of energy demand of WWTP and possible ways of improving power consumption of WWTP. Second section is a review of energy consumtion of vacuum systems of five different municipalities including one WWTP. Measured and evaluated outputs were used to create energy audit methodology for sewer systems.
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Energy efficient mountain chalet
Hartman, František ; Vlach, František (referee) ; Bečkovský, David (advisor)
This diploma thesis deals with project energy efficient mountain chalet. The building is located in the Krkonoše national park, near by highest Czech mountain named Sněžka. Object is located on plot number 899 in the cadastral Pec pod Sněžkou, on the site of the initial ,,Giant” chalet. The aim of this thesis is proposal of energy efficient mountain chalet in extreme climate conditions, such as in the mountain area, at the elevation 1378 m. Proposal of the chalet emphasis is on achieving maximum energy self-sufficiency. The building consists of two objects SO 01 and SO 02 interconnected by the roof. The total built-up area is 191.39 square meters. The accommodation capacity is 20 people.
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Energy performance of kindergarten
Mahovská, Adriana ; Vyhlídalová, Karolína (referee) ; Horák, Petr (advisor)
The bachelor’s thesis elaborates two energy performance certificates of kindergarten in the variant for the current status and the new state. The theoretical part deals with solar collectors. Computational part contains specification of building structures and power systems. It always includes a comparison of the default and the new state. The economic assessment is determined by the return on investment in revitalization. As part of the mandatory analysis of alternative sources, a proposal for a solar system for partial hot water heating will be established. The project part contains two processed EPCs (building energy performance certificate) for this building.
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Calculation of Energy Performance of Buildings
Hartman, František ; Maurerová, Lenka (referee) ; Hirš, Jiří (advisor)
This bachelor´s thesis in the first part deals with changes of energy assessment of the building by introducing decree 78/2013 and compares it with the previous decree 148/2007. In the next part are specified energy systems entering the calculations and individual computing procedures for determining the energy requirements for individual HVAC systems. In the last part is calculation of the energy performance of the building. As an evaluation mechanism was chosen, the energy performance certificate. There were dealt different variants of calculations in terms of data input. The results are shown in the comparative charts and diagrams.
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Hydrostatic bearings for wind energetics
Procházka, Michal ; Foltýn, Jan (referee) ; Michalec, Michal (advisor)
This bachelor thesis deals with the bearing of the main rotor shaft of a wind turbine using hydrostatic bearings. Wind turbines come in many designs and the thesis then determine the operating parameters and bearings used in horizontal axis turbines of different installed power outputs. Currently, repairs, as well as servicing of bearings, are very costly and affect the operation of the entire power plant. Hydrostatic bearings offer advantages that could reduce the failure rate of wind turbine bearings. The operating parameters of turbines of different outputs were used to calculate the selected hydrostatic bearings. The results shows that the use of this type of bearings is possible for turbines with different power outputs, but higher efficiency is estimated for larger turbines (for example 8 MW turbine). The energy consumption of bearing, required to drive the hydrostatic bearings, reaches 0,03 % of the total output, compared to 0,39 % for the smaller 55 kW turbine. The calculation has been simplified in the initial energy performance estimation and further steps could include bearing geometry optimization or extending the operating parameter range of the wind turbines.
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