The aim of this work is to detect the thermal defects of the walls on the solid-state biogas plant of Šumperk city, situated in Horní Temenice. In the first part, I give the survey of literature dealing with biogas and the conditions for its formation, storage and use. Next part is focused on basic information concerning building construction and also primarily aspects of thermal processes. The second part of this work provides description of the biogas plant analyzed. The particular accent is placed on its weaknesses in the design for the conservation of thermal energy. On the basis of IR thermography, I finally evaluate detected thermal defects of the walls.

Thesis is focused on thermal-insulation properties of wood fibreboards and building structure model including non-ventilated air layer. In the first part, the influence of temperature and moisture content on heat conductivity coefficient and heat transfer coefficient of wood fibreboards was investigated. In the second part, the building structure model was prepared, consisting of CLT, air layer and wood fibreboard. Subsequently, the two above mentioned characteristics were determined in dependence on measuring temperature, air layer thickness and inner surface emissivity.

Urban heat island is a phenomenon of different temperatures in cities compared to temperatures in the surrounding landscape. The intensity of this phenomenon can be influenced by the presence of vegetation in cities. There is evaluated the effect of vegetation on microclimate in various parts of the city České Budějovice in this thesis. The assessment is based on the evaluation of multispectral Landsat satellite images and thermal images, which were taken in-situ using thermal camera, and their statistical processing. The results show statistically significant differences in surface temperatures in the different areas of the city with a different amount of vegetation. Surface temperatures are significantly lower in areas with a large amount of vegetation than in areas without vegetation. Equally, selected vegetation surfaces have lower temperatures compared to anthropogenic surfaces, at least about 9 ° C.

The present thesis deals with another current issue, which is known as the urban heat island. Phenomenon which aries by changes in the environment i divided into two categories namely natural and anthropogenic, this two categories can work together. City and counrtyside are different, the cause is the growing urbanization of towns and changing the earth´s surface, taht can absorb solar radiation and later released into the environment. The result of this process, the warming of the atmosphere in the cities. In the literary part describes the historical development of climate, climate as a separate element and urban heat island. Urban heat island is also distributed through energy balance, causes, impacts and possible alternatives to eliminate ist mitigation. The main objective was to describe the available evidence and evaluate data from four different European citites (Bourges, Hamburg, Karlov and Strasbourg). Furthermore to determine through maximum and minimum monthly temperatures in the summer months, whether in those cities discovers and develops this phenomenon. Further analyze the frequency of individual synoptic situations for the period 1961-2010 and evaluated their relationship to the air temperature. In the first hypothesis was from statistical studies demonstrated, that in summer was markked ibcidence of urban heat island, which is especially noticeable in minimum temperatures. Further analysis demonstrated that the synoptic situation, when they have their effect on the urban heat island. The second hypothesis and it´s the air temperature changes are causes by human activities, and the result is creation of urban heat island to certify based on the evaluation of the data series.

The diploma thesis is focused on the design of the timbered wall composition considering the low-energy and passive standard. Main goal of the thesis is to calculate heat transfer coefficient U for four different types of the timbered walls and consequently evaluate if they comply with the requirements of low-energy and passive standards. The calculations show that the traditional concept of the timbered structures is inefficient for the mentioned energy standards. The minimal thickness of the timbered wall which will satisfy the requirements of the energy standards for low-energy and passive structure were calculated for the proposed four types of wall composition. For the calculations methods according to the applicable standards ČSN were used. To verify accuracy of these method and the performed calculations simplified numerical model was made in finite element software.

This master thesis describes the design of internal sewage system and infrastructure of project for building permission - center for rescue units in Hostivice near Prague. Partial architectural design documentation created by Martin Svoboda (student of Czech technical univerzity in Prague) was used as a foundation for this master thesis.

This masters’ thesis deals with a thermal design of a draft dry bottom boiler for bituminous coal that should replace a disassembled boiler in a current boiler room. Application of SCR is intended in order to reach emission standards of NOx.

This diploma thesis introduces the reader to the design of the new cooling circuit and its modernization. Part of this is the calculation of the heat exchanger and the design of other parts, such as pumps or cooling towers. It also deals with the possibility of using waste heat for specific conditions.

The thesis focuses on the polymer hollow fibres heat exchangers. The main object of the research is the formation and process of condensation on the outer surface of fibres and the effect of phase change on the heat transfer. The study deals with the influence of the geometry of the heat exchnager on the heat transfer and the condensation process. Fatigue tests of polymeric hollow fibres exchangers are also part of the work. The work provides an overview of the possible use of such heat exchangers in industrial applications associated with condensation.

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.