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Economic analysis of passive houses
Řezníčková, Tereza ; Geuss, Erik (advisor) ; Branžovský, Antonín (referee)
The master thesis deals with passive houses and their profitability's economic analysis. The thesis focuses on both new buildings and renovations, which have the greatest potential for energy savings in the building's sector. The cost-effectiveness of proposed measures is evaluated using the example of reconstruction of an existing house with passive and low-energy standard. Low-energy option of reconstruction is more profitable from an investor's perspective than the passive one. At 4% annual growth in energy prices, both options become comparable. The result of the calculation is not generally applicable. The profitability always depends on a specific building and various measures. Besides the cost-effectiveness, the investor's decision about an investment is also influenced by an increasing level of living comfort, subsidies and environmental protection.
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Economic Diplomacy of China in Africa
Dus, Jakub ; Stuchlíková, Zuzana (advisor) ; Vlčková, Jana (referee)
This study is about economic diplomacy of China in Africa. It describes development of China-Africa relations, their current form and examines, whether less democratic countries trade more with China than the democratic ones. The study is divided into four chapters. The first one defines economic diplomacy theoretically. The second one focuses on China-Africa relationship from its history up to establishing of Forum on China-Africa Cooperation. It also describes motives of China-Africa cooperation, stressing China's energy dependance. The third chapter describes development of China-Africa trade, Chinese foreign direct investments and development aid and pros and cons of China's presence in Africa. The last chapter examines relationship between level of democracy in african countries and their trade with China.
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Economic analysis of influence of weather extremes on working and return on investment of small hydropower plants in the Czech republic betwen 2000-2015
Pavlík, Vladimír ; Macháč, Jan (advisor) ; Louda, Jiří (referee)
Nowadays, investments to small hydroelectric power stations are still highly profitable. Return on investment of a small hydroelectric power station is frequently half the period guaranteed by the state or by energy regulatory authority (Energy Regulatory Office, ERO). There is an information asymmetry among the state, as the entity that providing a subsidy, and operator of a small hydroelectric power station. These power station have constantly great potential. However, the risk of extreme hydrological fluctuations caused by floods or drought is discussed more thoroughly. Consequently, these fluctuations might harm the return on investment. The aim of this thesis is to determine to what extent hydrological extremes will affect the return on investment...
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Study of the impact of the new energy block Domoradice on local climate II
Sokol, Zbyněk ; Řezáčová, Daniela
The study stems from a previous work, where we used a mathematical model CT-PLUME / DOM. It is a basic model CT-PLUME adapted to assess the effect of mechanical cooling towers located in Domoradice on the model area. This study differs from the previous one in two respects: it processes 3-year period (2013, 2014 and 2015) and in addition to the basic climatic characteristics pays attention to icing. For this study, the basic module used before should be extended to model the conditions for the formation of ice in the vicinity. The final version of the model used in this study is referred to as CT-PLUME / DOM-2.
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Ground Heat Exchangers - Operating States and their Influence on Microbiological Hazards
Kolbábek, Antonín ; Klánová, Kateřina (referee) ; Kratochvíl, Zdeněk (referee) ; Jaroš, Michal (advisor)
This thesis deals with the Air to Ground Heat Exchangers (AGHEx) and their effects on the hygienic quality of the supplied air and the microbial microclimate in the interior of buildings. The theoretical part focuses on current findings and knowledge in the field of warm air heating, ventilation of the low-energy and energy passive houses and ground heat exchanger for the ventilation systems to family houses. The next chapter deals with the quality of the indoor environment and the influence on HVAC systems on the building microclimate. The experimental part of the thesis presents the results of energy simulations of operation of air to ground heat exchanger, obtained using the simplified model, and the data from long-term monitoring of experimental AGHEx built at FME BUT. Furthermore, the results of microbiological research of several already operating air to ground heat exchangers are evaluated. The research was carried out using two different sampling methods: the method using swabs taken from the pipe wall, and the sedimentation (gravimetric) method. The conclusion part mentions the practical experiences of users and knowledge of the author relating to the design, operation and use of air to ground heat exchangers.
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Properties and in vitro Degradation of Metalic Biodegradable Materials
Ročňáková, Ivana ; Trojanová, Zuzanka (referee) ; Vojtěch,, Dalibor (referee) ; Podrábský, Tomáš (advisor)
Biodegradable metallic materials for medical applications have received considerable attention in recent years. The main reason is that they provide high potential for fabrication of temporal orthopedic implants such as bone fixation devices. Magnesium is an excellent candidate for fabrication of biodegradable implants due to its biocompatibility, mechanical properties similar to human bone and relevance for biological body functions. The fast degradation rate of magnesium and its biodegradable alloys in physiological environment limits its clinical application. Another attractive material in the field of biodegradable materials is zinc, which is among the essential elements in human body. Zinc exhibits an excellent corrosion resistance, and inferior biocompatibility compared to with magnesium. Hence, surface modification to form a hard, dense/porous, biocompatible and corrosion resistant modified layer has become an interesting topic in magnesium base biomaterials. Since hydroxyapatite is well tolerated by living organisms and in addition, improves the bone growth, it appears to be excellent candidate for such coatings on surface of biodegradable materials (e.g. Mg, Zn). This thesis is focused on comparison of corrosion behavior of pure non ferrous metals (Mg, Zn) and metals coated with hydroxyapatite, in simulated body fluids. The present approach is the use of modified atmospheric plasma spray technology to produce the hydroxyapatite coatings – suspension spraying. Composition and structure of the coatings and corrosion products were studied by light microscopy, scanning electron microscopy equipped with energy dispersive microanalyzer and X-ray diffraction. Corrosion of Mg and Zn samples was monitored by weight loss and determined by X ray and micro-tomography. The application of the HA coating resulted in decrease of corrosion rate of pure Mg. The corrosion rate of coated Mg samples was lower by 27,3 % in comparison with the corrosion rate of pure non coated Mg. Corrosion degradation of uncoated and coated Zn samples was minimal. The aplication of HA on the non ferrous surface appears to be a very promising method to improve corrosion and biological properties of these biodegradable materials.
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The strategic importance of Serbia to the European Union
Janković, Vukica ; Vošta, Milan (advisor) ; Karpová, Eva (referee) ; Němcová, Ingeborg (referee) ; Kazanský, Rastislav (referee)
Doctoral dissertation presents an analysis of the Serbian economy in the mutual relations between the European Union (EU) and the Western Balkans. The assumption that the EU and Serbia, as an integral part of the Balkan region, have interests in the partnership and cooperation is the baseline of the research. The following aspects have been singled out, by method of ranking, which is based on achieving the highest turnover in the last six years: trade, foreign direct investment and energy. Gravity model was used to analyze routes of trade and energy. A models of trade import and export between Serbia and the EU 28 member countries and the countries of the Western Balkans, as well as models of imports and exports of energy between Serbia and the EU 28 member countries and the countries of the Western Balkans, were used in order to assess the potential of trade and energy trade. Method of trend line and trend extrapolation of foreign direct investment (FDI) was used in order to determine the degree of the presence of FDI in Serbia and their predictions, which could be an indicator of investment climate in Serbia. The conclusion is that Serbia has strategic importance as a candidate for membership in the EU because of its regional importance. Entering the Western Balkan countries in the EU should not happen without Serbia, because Serbia has a regional importance, which arise from the economic, historical, cultural, infrastructural and geopolitical links with countries in the region, of which some are already members of the EU.
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