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Biomass utilization for cogeneration small power
Neminář, Štěpán ; Škorpík, Jiří (referee) ; Baláš, Marek (advisor)
The subject of this thesis is the utilization of biomass for cogeneration units of small power (to 500 kWe). Within the first paragraphs the thesis focuses on technologies which produce more valuable fuels than the solid biomass. This chapter also describes the most recent processes of waste biomass usage. The following section summarizes gaseous and liquid products of this procedure and their feasible use in co-generation. In the last part of this thesis author describes a CHP devices which are used in small electric power production and assesses their advantages and disadvantages. Consequently, some options of their practical usage are highlighted. As a conclusion, these devices are compared and their possible future application is illustrated.
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Biomass and waste gasification and cogeneration by the help of microturbine
Kašpar, Matěj ; Najser,, Jan (referee) ; Baláš, Marek (advisor)
This diploma thesis investigate the question of combined production of heat and power by the gasification of biomass. The introduction describes basic dilemma energy conversion from biomass. Further, special attention at the gasification technology and it´s usage at combined heat and power production is paid. The main section includes schematic proposal cycle with use of microturbine 80 [kWe] as well as basic calculation, which serves as a base for folowing project optimization. For discussed optimization is made concept of configuration, thermal and aerodynamics calculation for both heat exchangers B1 and B2. Last but not least these heat exangers were compared by different aspects such as influence of deposits on power transfer and pressure loss. At the end of the work calculated numeric values are discussed and the project of heat exchanger with it´s advantages for practise are summarised.
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Source for heat production in the Czech Republic
Macek, Robin ; Kracík, Petr (referee) ; Baláš, Marek (advisor)
This bachelor’s thesis deals with sources for heat production in the Czech Republic. The first part is a research part and is about used heating technology in our country. The second part is again research part and describes individually in more detail parts of the heat sources, as boils, turbines, heat exchangers a heat distribution. The next chapter compares advantages and disadvantages of central heat supply and local source of heat, first theoretically and then practically. The last part balances production of the heat and electricity from the point of view of the fuel used and the amount of production over the past 15 years.
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Cogeneration units for family houses
Pekárek, Michal ; Toman, Filip (referee) ; Kracík, Petr (advisor)
The scope of this bachelor’s thesis is basic design cogeneration unit in family house. The work is divided into three parts. The first part includes a summary of suitable cogeneration units. For each technology is mentioned short description with advantages and disadvantages. Based on this information was made a conclusion, that the most suitable microcogeneration units are with combustion engine, Stirling engine and fuel cells. This section focuses on legal requirements, which are connected with the application in family houses. The last section deals with the application in a specific family house. Heat loss of family house is 12,4 kW, amount of heat we have to provide for heating and warm water is 41,7 MWh and during the year was used 3,15 MWh of electricity. We have decided to design three different variations, all traffic-related cost and revenues are calculated for each design. In conclusion, they are compared with original state of energy supply to the family house.
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Application of cogeneration units in apartment buildings and industrial buildings
Pinkoš, Patrik ; Radil, Lukáš (referee) ; Pitron, Jiří (advisor)
This bachelor’s thesis deals with issues of cogeneration and its application to apartment buildings and Industrial buildings. At the beginning of the thesis are described main principles. In the next part are characterized different types of cogeneration technologies and their comparisons. This thesis also deals with possibilities of use of cogeneration technologies and the input parameters for commissioning. Thesis contains basic European and Czech legislation for combined production of electricity and heat. At the end thesis deals with possibilities of using cogeneration as decentralized source.
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Cogeneration units for family houses
Pekárek, Michal ; Toman, Filip (referee) ; Kracík, Petr (advisor)
The scope of this bachelor’s thesis is basic design cogeneration unit in family house. The work is divided into three parts. The first part includes a summary of suitable cogeneration units. For each technology is mentioned short description with advantages and disadvantages. Based on this information was made a conclusion, that the most suitable microcogeneration units are with combustion engine, Stirling engine and fuel cells. This section focuses on legal requirements, which are connected with the application in family houses. The last section deals with the application in a specific family house. Heat loss of family house is 12,4 kW, amount of heat we have to provide for heating and warm water is 41,7 MWh and during the year was used 3,15 MWh of electricity. We have decided to design three different variations, all traffic-related cost and revenues are calculated for each design. In conclusion, they are compared with original state of energy supply to the family house.
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Source for heat production in the Czech Republic
Macek, Robin ; Kracík, Petr (referee) ; Baláš, Marek (advisor)
This bachelor’s thesis deals with sources for heat production in the Czech Republic. The first part is a research part and is about used heating technology in our country. The second part is again research part and describes individually in more detail parts of the heat sources, as boils, turbines, heat exchangers a heat distribution. The next chapter compares advantages and disadvantages of central heat supply and local source of heat, first theoretically and then practically. The last part balances production of the heat and electricity from the point of view of the fuel used and the amount of production over the past 15 years.
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Vývoj emisí skleníkových plynů a znečišťujících látek z veřejné energetiky a výroby tepla v ČR v letech 1990–2012
Rollerová, Miluše ; Mertl, Jan
The impact of public electricity and heat production on the environment in the Czech Republic has significantly declined since 1990. Nevertheless, the public electricity and heat production in the Czech Republic has remained the category with the highest share on the total aggregated greenhouse gas emissions and also have a significant influence on the state of the environment. The positive trend of pressures on the environment from public electricity and heat production during the last 25 years was influenced by investments on the environment, by implementation of new measures aimed at decreasing the level of pollution and by dynamic technological development. On the other hand, there has been no significant decline of the consumption of brown coal for electricity and heat generation; therefore, the current efforts aimed at decreasing carbon intensity of the economy by means of increasing the share of “green” alternatives (especially renewable energy sources) in the energy mix can be seen as ineffective from environmental perspective. Moreover, the Czech Republic has a significantly negative and growing balance of international trade with electricity, which is an exception amongst European countries. In the consequence, the additional burden on the environment is caused by electricity generation.
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