The topic of this diploma thesis is to design the co-firing of blast furnace gas and coke-oven gas. First, the stoichiometric calculation for the gas mixture was made. It is followed with the determination of basic measures of heating surfaces and with their thermal calculation. The part of the work is also the drawing documentation of the boiler.

The topic of this diploma thesis is the design of a MIG/MAG welding machine, suitable for locksmiths and workshops. The diploma thesis includes the analysis of existing products from the design and technical point of view and deals with the design of welding machine. The proposed concept focuses on interactive and modern look of the machine and comfortable manipulation and easy operation. The design itself offers a possible direction of morphology of welding machines in the future.

The aim of a diploma thesis is design of draft boiler for co-firing blast furnace gas and natural gas. In the first part is made the stoichiometric calculation for the gas mixture. Next is the proposal of combustion chamber and proposal of individual heating surfaces of boiler. Next part contains the thermal calculation and control of individual heating surfaces. Part of the work is also drawing documentation of boiler.

This paper analyses the purchase and operation of vehicles on compressed natural gas. It contains a definition of Compressed Natural Gas (CNG) and discusses the various phases of its use in transport. It indicates the differences of this alternative fuel compared to traditional fuel such as gasoline or diesel. Then it focuses on the main reasons to support the use of compressed natural gas transport and talks about the legislation which has a major role in the development of alternative fuels. Then it specifies the disadvantages which can be associated with its use in transport. The last section includes an analysis on the specific example of the RWE CZ Group, which compares the different costs for compressed natural gas vehicles and vehicles which run on conventional fuel. Specifically the cost per kilometer of vehicle, CO2 emission and purchase price are given for comparison.

The thesis focuses on the influence of new natural gas sources on energy security in the USA. The new sources include mainly shale gas, but also tight gas and others. The main objective of the thesis is to evaluate the impact of changes in production and trade in gas on energy security and self-sufficiency of the USA. The thesis is divided into five chapters. The first chapter is theoretic and thus provides the frameworks for the following parts of the thesis. It focuses on the security concept in literature and in the papers of international energy agencies, e.g. IEA. For the purposes of the thesis, energy security is defined as the ability of a state to secure uninterrupted and stable supply of energy at a reasonable price of sufficiently diversified energy sources, which can be flexibly substituted among each other without additional costs by the end consumers. The second chapter concentrates on energy security in the USA, the development of energy legislation and the position of the United States in international comparison from this point of view. The third chapter deals with the technical background of production and its legislative status of the USA. To compare, it also addresses the production legislation in some EU countries. It follows up market implications of increased domestic production, specifically its profitability, changes in energy mix and in trading position of the USA in energy sources. The fourth chapter analyzes price impacts using change in domestic and foreign demand and supply in natural gas, including their price elasticity, and the price development itself. The fifth chapter summarizes, based on the findings from previous chapters, perspectives of the future development, mainly impacts on economy and potential export. The thesis comes to the main conclusion stating that the production from domestic sources shall have a positive impact on energy security not only in the USA, but also consecutively in other countries dependent on import of energy sources through higher diversification of source countries. Better available commodity may contribute to greater price competitiveness of domestic products on international markets and help to substitute coal with gas in energy mix. The biggest risk is seen in the low gas price that makes the production economically unprofitable. However, the gas price should maintain the level which would allow for profit of the producers, reasonable price for the consumers and increased level of energy security thanks to further development of the production technology, its better price availability and increased demand on cleaner energy sources.

The diploma thesis deals with the energy security of China, mainly with the question considering energy mix, consumption, infrastructure network and diversification of importers in natural gas field. The analysis of research question is done mainly from the data of international energy organizations, from the Chinese government data and other sources, which enable to describe mentioned problems. From the People's Republic of China perspective, it focuses on the detailed description of gas pipeline infrastructure, importers and subjects, which are involved in energy sector. Risks and threats, which should occur from signed partnerships or projects, were taken into consideration too. The aim of this work is to define and evaluate the energy security of PRC, its energy policy mainly in natural gas field when considering present situation as well as possibilities for the future. Than the diploma thesis outlines the role of natural gas in Chinese energy mix, state of the gas sector in China and evaluation of projects, which take place in China's gas sector or will occur in the future.

The aim of the Master's thesis is to map the importance and role of liquefied natural gas in Europe and to assess its significance for future energy security of the EU. Working with the general characteristics of natural gas and LNG dedicated to LNG infrastructure and LNG position in the gas market in Europe. The fundamental part of the thesis analyzes the importance of LNG for energy security of European countries. Theoretical framework of the thesis comprises the concept of energy security of Daniel Yergin, which is followed by an approximation of EU energy policy. The end of thesis describes an European project North-South Energy Corridor that will significantly strengthen the energy security of Central European countries.

This diploma thesis deals with the energy policy of the Russian Federation in the period from 2000 to 2008 and its prospects until 2030. First of all, I analyse particular targets of the energy policy of Russia and put them in a broader framework. Consequently, I focus my attention on three economic targets that need to be met if Russia is to become an "energetic superpower". Firstly, I search for the answer to the question whether Russia has enough oil and gas for foreigner markets and whether it can provide for their export in order to be able to act successfully as an "energetic superpower". Secondly, whether Russia will succeed when exporting oil and natural gas to world markets and whether it will manage to diversify transport routes for its exports. Thirdly, whether the effort to "make the economy move" supported by raw-material exports has been successful and whether this situation can continue. The thesis further follows each answer to these questions in two dimensions of time. A hindsight shall first clarify how successful the energy policy of Russia was when meeting these targets until 2008, or what problems Russia had to face while trying to meet them. In consequence, this provides a basis for a foresight.

Předmětem zkoumání diplomové práce je energetická bezpečnost členských zemí Evropské unie a Spojených států amerických. Pomocí analýzy vývoje jejich energetických politik se práce snaží najít odpověď na otázku, jakým směrem se bude ubírat jejich vzájemný vztah s ohledem zajišťování jejich energetické bezpečnosti. Pole zkoumání je zúženo pouze na zajišťování si přístupu k dodávkám ropy a zemního plynu.

This thesis deals with the introduction of alternative propulsion vehicles in a medium-sized enterprise. The starting point of the work is time series of fuel prices modelation: CNG gas, Natural 95 and Diesel during the years 2008--2013 and a two-year prediction of the prices, including the estimation of the uncertainty associated with the development of prices. The prediction is then used in simulations to estimate the probable development and effect of investments. The result of this thesis is formulated in a general methodology for the possible purchase of new cars in the midmarket and practical applications to mid-sized company MIKROP ČEBÍN a.s.