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Renewable energy sources in CR
Žaloudek, Martin ; Moskalík, Jiří (referee) ; Fiedler, Jan (advisor)
The thesis consists of the definition of biomass and its exploitation as a sustainable resource. It describes different types of biomass and their influence on the process of transformation to use for energy needs. It also introduces possibilities of electric energy and heat production out of this raw material, accompanied by an illustrating example of biomass as a suitable fuel. The end of the thesis evaluates the importance of biomass as an energy resource for the Czech Republic.
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Legal and economic aspects of use of CNG and biogas in transportation
Yusupova, Regina ; Štěpánek, Petr (advisor) ; Černý, Pavel (referee)
Use of compressed natural gas (CNG) as an alternative transportation fuel is currently being supported in European Union and Czech Republic as well. Upgraded Biogas (or biomethane) with its chemical characteristics is to be considered as a renewable substitute of CNG so it can be used for the same purposes. Biogas is produced in biogas stations. Current legislation terminates the support of producers of electricity and heat from renewable sources, including biogas stations. The absence of governmental support will endanger their existence. Producing of biomethane and using it in transportation is an alternative option for the owners of biogas stations. The aim of this bachelor thesis is to conduct an economic analysis of biomethane producing costs. On the basis of the results obtained, we will be able to say whether producing od biomethane is reasonable in Czech Republic. Then we will try to establish whether the use of biomethane in transportation is possible according to Czech legislative terms or what possible legislative amendments should be implemented.
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Vliv pěstování energetických rostlin na biodiverzitu
DVOŘÁK, Jan
The thesis is focused on the cultivation of energy crop in the Czech Republic and their potential use as renewable energy sources. It describes energy plants grown for the production of liquid fuel, biogas or direct combustion. Furthermore, there is an emphasis on environmental aspects of cultivating these plants. Especially erosion risks of the land on which energy crops are grown, is also evaluated. There is described the species diversity in crops focusing on weeds and ground beetles as bioindicators environment. Part of this work is elaboration a questionnaire with subjects that deal with the cultivation of energy plants. In the questionnaire, there is observed total area and the percentage of types of energy and other cultivated plants. The subjects were also asked about new kinds of energy crops, and whether they planned their growing in the near future.
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The renewable energy sources and their influence on Brazilian economy
Semerádová, Zuzana ; Müller, Štěpán (advisor) ; Taušer, Josef (referee)
Bachelor thesis deals with the influence of the integration of renewable energy sources in the Brazilian economy and the subsequent negative or positive effect on the economy of the country. The first part presents the basic factual data about Brazil, the development of the Brazilian economy and its current status. The second part is devoted to the field of theoretical clarification of the concept of renewable energy sources, describes the types of renewable energy sources and how they can be obtained. The third part refers to the particular cases utilization of renewable sources in the Brazilian territory and the problems associated with this drawing. This chapter also discusses the government's involvement in the production of energy through renewable sources and the local energy market environment. The last section compares the data to determine the effect of various categories of renewable energy sources in the economy and describes investment in renewables.
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Brownfields as places for renewable sources location?
Kunc, Josef ; Frantál, Bohumil ; Klusáček, Petr
Issue of finding suitable methods and solutions of brownfields revitalization has been discussed for several years. Given its multidisciplinary character the solution is very complicated and the succes is not always ensured. Due to frequent contamination and degree of devastation of brownfields, increased demands on implementation of the projects are placed and private capital shows little interest in revitalization process yet. State support is also very important. One of the possible way of brownfields revitalization is installation of renewable energy sources (primarily solar and wind powers) on brownfields sites how is to be seen in developed countries. The aim of the contibution is to point out the occasions mentioned above in the Czech Republic as well.
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Objectives of Centre Competence BIORAF for Recyclable Biological Material Treatment
Šolcová, Olga ; Hajšlová, J. ; Demnerová, K. ; Vosátka, M. ; Jandejsek, Z. ; Bárnet, M. ; Svátek, A. ; Kaštánek, P. ; Hanika, Jiří ; Topka, Pavel
Projekt Bioraf řeší komplexní přeměnu biomasy metodami tzv. zelené chemie na spektrum společensky žádaných produktů s vysokou přidanou hodnotou a energií.
Fulltext:  PDF
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BIORAF – Biorefinery Research Centre of Competence
Topka, Pavel ; Hajšlová, J. ; Demnerová, K. ; Cepák, Vladislav ; Vosátka, Miroslav ; Jiřičný, Vladimír ; Jandejsek, Z. ; Kopenec, J. ; Šmejkal, M. ; Kaštánek, P. ; Šolcová, Olga
The project, which started in 2012, creates an interdisciplinary center with high innovation potential for sustainable utilization of renewable sources, and will bring the Czech Republic to the leading position in next-generation biorefinery within next eight years. The project links the private sector with experts from different fields of science (e.g., biosciences, phycology, analytical chemistry, enzymology, microbiology, chemical and biochemical engineering, material engineering, etc.).
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22012102413542 - PDF
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Impact of Renewable Energy Source Introduction on Energy System in the Czech Republic
Siuda, Jan ; Bič, Josef (advisor) ; Šolc, Pavel (referee)
This thesis analyse the impact of the renewable energy resources on the transmission and distribution networks in the Czech republic. The volatility changes based on the growth of the number of production places of this kind and other negative effects are being examined. The analysis has proved difficulties in transmission networks balance management and then problems with voltage quality supply by distribution companies. The international cooperation between transmission operators is also being analysed. This thesis proves that renewable resources and their implementation have significant economic impact not only within the meaning of higher production costs.
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Statisitcal models of the renewable energy market
Kozma, Petr ; Marek, Luboš (advisor) ; Coufal, Jan (referee) ; Hronová, Stanislava (referee) ; Janáček, Kamil (referee)
An efficient application and development of renewable energy sources is one of the most important contribution to the energetic balance of the human society. Anyhow, statistical model of the renewable energy market, which would fundamentally explain relevant economical rules related to these perspective energetic resources, is not clearly known up to now. Nevertheless, the relevant statistical data concerning application of solar energy (photovoltaic and thermo-solar heating) are available for the last twenty years. Based on the economic models, statistical data concerning sales of photovoltaic models and thermo-solar collectors sales have been analysed in this work. It has been shown that the model of constant elasticity predicts an exponential increase which will slow down when a certain level of annual cumulative sales was reached. The model of constant elasticity was found to be successful to interpret past sales data. In the approach of variable elasticity model the parameter of the elasticity has been modified as a function of variables such as market volume, price and time through the statistical evaluation. It enabled to calculate initial, saturation and competitive market conditions, as well. Whereas the constant elasticity demand model describes exponential growth of sales and installations, which was characteristic for the beginning of the application of these renewable resources of energy, the variable elasticity demand model describes a more realistic situation, where cumulative sales either increase or decrease and prices vary subsequently. Simple growth model of unlimited demand based on the growing sales is not realistic and could not be feasible in the long term. The market elasticity could be understood as a real economical parameter representing percentual market increase or decrease at a given time; in the variable demand elasticity model, the constant elasticity is replaced by a function of a market volume, price and time. In this case, we can estimate model parameters for the different market conditions: growth, saturation and decrease. The function representing the capital adequacy in the generalized market model has also been deliberated. Statistical models have been used to determine cumulative sales and market prices of photovoltaic modules and thermo-solar collectors. Moreover, model parameters have been used for the calculation of the realized photovoltaic and thermo solar projects' capital adequacy on the renewable energy market. By using model parameters, renewable energy market forecast up to 2020 has been estimated. We have used generalized market model to credibly estimate future renewable energy market until 2020; as well as extend model parameterization on other resources of renewable energy (water and wind, geothermal sources, biomass) and set prices of energy produced from these renewable sources. Potential energetic savings have been estimated for households (apartments and private houses), who can be relevant consumers of energy from renewable sources. We have performed statistical findings on randomly selected files, where we have reached a real energy consumption, to prove this. This research allowed us to perform a real estimate of a renewable energy contribution to the total energy balance. We have successfully proved that linearly growing capital adequacy function, with an annual growth between 2.5% and 3.0%, is reflecting the renewable energy market sufficiently and is fully in line with an average growth of the total energy consumption. Renewable energy share on the total energy balance will grow substantially to reach a level of 15% in 2015 on the world market and a level of 8% in the Czech Republic for the same period with a perspective to reach a level of 11% in 2020 respectively. Assuming this level of renewable energy on the total production will lead to a decrease of CO2 emissions by three million of tones in 2015 and by four million of tones in 2020. Final reach of this status quo is fully predicted by our statistical model for renewable energy market.
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Is subvention program supporting production of electricity in photovoltaic plants in the Czech Republic efficient?
Vaniš, Miloš ; Mičúch, Marek (advisor) ; Zajíček, Miroslav (referee)
As a consequence of recent generous subvention program, supporting electricity production from renewable resources, number and size of installed capacity of the photovoltaic plants in the Czech Republic skyrocketed. Strikingly, using photovoltaic plants to reduce CO2 is the most expansive but paradoxically the most supported way to reduce emissions compared to alternative electricity production in the Czech Republic. Guaranteed producers' purchase price increases electricity prices for households and firms. Production of electricity in photovoltaic plants also encumber power transfer network. Purchase prices of electricity from photovoltaic plants were introduced to increase the share of electricity produced in photovoltaic plants on the overall consumption and to reduce CO2 emissions. Reducing CO2 emissions to stop climate change was the main reason for introducing photovoltaic subvention. Analysing the relationship between amount of CO2, number of photovoltaic plants and GDP on the data of selected countries showed that the production of electricity in a photovoltaic plants contributes nothing to CO2 reduction in short-term.
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