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Design of a renewable heat source using an energy performance certificate
Karas, Richard ; Vyhlídalová, Karolína (referee) ; Horák, Petr (advisor)
The bachelor's thesis deals with the design of a renewable heat source of the existing kindergarten building in Janovice. The design is made using the building's energy performance certificate. The theoretical part deals with renewable energy sources for heating, which specifically focuses on thermal energy and biomass. The calculation part deals with the energy analysis of energy needs and flows of the building, the energy needs for individual building systems and in coclusion the economic and ecological evaluation of design states. The project part contains three energy performance certificates of assessed building.
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Regeneration of heat and water from the exhaust air stream
Jankůj, Tomáš ; Baláš, Marek (referee) ; Pospíšil, Jiří (advisor)
This thesis deals with the process of wood drying. It is a method of removing excess water from wood. Drying can be divided into two basic types. The first type is natural drying. The material is dried without the presence of foreign energy source. This type depends only on climatic conditions and the amount of sunlight. Another type is artificial drying, where is pre-sent a foreign energy source, such as a biomass boiler. The second type is significantly faster than the first. The second type of drying uses a device called a wood dryer. There are a lot of types of wood dryers, the most widely used are kiln dryer, belt dryer, rotary drum dryer. In these devices, the thermal energy is transferred to the drying materials by the flowing warm drying medium (convection). The heat is transferred to the drying medium in a heat exchan-ger. Because the drying process is very energy demanding, it is appropriate to reduced the required energy. This can be done by regenerating heat and water. In the heat exchanger, part of the heat can be gained from the flowing exhaust medium. If a condensation of evaporated water in the exchanger occurs, the latent heat of the water is released. The gained heat is used to preheat the drying medium and thereby to reduce the required energy.
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Source for heat production in the Czech Republic
Bártová, Jana ; Kracík, Petr (referee) ; Baláš, Marek (advisor)
This bachelor thesis deals with thermal recources in the Czech Republic. The first part of the work is about the division and description of heating plants used for the production of thermal and electric energy. The second part of the thesis describes the advantages and disadvantages of district heating and individual heating. The last part of my work contains statistical processing of heat sources located in the Czech Republic.
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Study of applicability of suitable materials for long-term storage of heat energy
Bukvová, Veronika ; Šot, František (referee) ; Šťastník, Stanislav (advisor)
This bachelor thesis deals with appropriate ways of storing thermal energy and selection of materials for a high capacity storage unit. The thesis describes technologies currently used for long-term storage of thermal energy, structural arrangement of the thermal unit, physical properties of the materials usable for construction of high-temperature storage units and the utilization of these materials. The thesis also describes the measuring procedure of the material characteristics and the method of evaluation.
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Air-water heat pump
Ondráček, Miroslav ; Moskalík, Jiří (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with modern detached house heating by heat pumps. Heat pump is an energetic device able to withdraw (at relatively low temperature) thermal energy from surrounding environment and transform it to heat usable for heating a house or warming up water or a swimming pool. For the process to work, it is necessary to provide a little electrical energy to propel a compressor. Relation between thermal energy gained and electrical energy supplied is then called a heating factor. The heating factor is usually between 3 and 5 according to heat pump operating conditions. The lower is an output temperature, the higher is the heating factor. An underfloor heating operated at 35 degrees Celsius (while the house is warm enough) is ideal for using the heat pump. The thesis describes various heat pump types and their advantages and disadvantages. Air/water heat pump is then explained in more detail including estimation of investment rate of return compared to gas heating.
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Hot water heating systems with solar component
Umýsa, Radovan ; Štětina, Josef (referee) ; Katolický, Jaroslav (advisor)
Bachelor's thesis deals with the description of hot-water heating systems using solar elements. This work consists of two parts. In the first part of thesis describes types of hot-water heating systems and their distribution according to different aspects. The following are the basic types of components, which are used in such systems. The work also discusses the use of sunlight to obtain thermal energy using solar collectors. The second part of work is focused on technical-economic comparison of solar heating systems for TV and heating, using two different types of solar collectors.
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Cogeneration plants on vegetable oil
Macoszek, Pavel ; Baxant, Petr (referee) ; Radil, Lukáš (advisor)
The thesis is focused on cogeneration units on vegetable oil. The first chapter contains basic information about the production, supply and consumption of electric energy in the Czech Republic and about renewable energy sources. The following chapter is devoted to possibilities of use oil kinds of phytomass in the Czech Republic, or products made from them. Next chapter is mentioned on legislation allowing the use of used cooking oils for energy purposes. It contains a summary of the laws and regulations and options regarding subsidies for electric and heat power. The main objective of these chapters is to explain the issue of the establishment and operation of cogeneration units on vegetable oil. The following chapters are devoted to the design and study of simultaneously operated cogeneration unit on the vegetable oil with a combustion engine and the calculation of economic operation running. The reason of study is to evaluation, which on based of the input values and calculation methods determine the economic efficiency of the project cogeneration unit on vegetable oil under mode purchase price and mode green bonus. Appreciation is also given to the overall legal review and responsibilities of cogeneration units on vegetable oil.
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Heat recovery from waste water
Paulíková, Kateřina ; Sitek, Tomáš (referee) ; Toman, Filip (advisor)
The aim of the Bachelor’s Thesis is to discuss the view of wastewater as a source of thermal energy. The thesis is divided into three main chapters. The first chapter aims to acquaint with the issue of wastewater. The analysis of systems for heat recovery from wastewater is summarized in the following chapter. Also there is a focus on systems installed directly at the generation of wastewater, inserted into the sewerage pipes and finally the creation of thermal energy in wastewater treatment plants. All mentioned systems are built to be economical and ecological efficient as possible. Finally, the last chapter includes an overall evaluation of the systems.
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Environmental-friendly heating
Čekanová, Adéla ; Tabasová, Andrea (referee) ; Němec, Zdeněk (advisor)
The subject of thesis is environmental-friendly heating. Theoretical part includes overview of possible ways using alternative energy sources, especially solar energy and energy environment - heat pumps. Partical part is devoted to solution of environmental-friendly heating and heating warm water for family house using solar system. The proposal is documented with economic evaluation and calculation of economic return.
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