|
| |
|
|
Utilization of Zea mays L. for energetic effects
RATAJ, David
This bachelor thesis deals with the types of energy use of flint corn (Zea mays). It compares the suitability of hybrid maize lines. The thesis is to summarize and compare the literature data on other types of energy crops and compares them suitable for cultivation for energy recovery on the basis of some production capacity and energy parameters (dry matter yield, energy recovery, combustion heat and humidity).
|
|
|
Assessment of use of graminoid stands for biogas production
RYCHTEROVÁ, Jana
The MSc. Thesis is part of project No. 2B06131 of the National Research Programme of the Czech Republic. The aim of the work was to assess selected herbaceous stands in repsct to their use for biogas production. A working hypothesis was set as follows: The biogas production per unit organic matter does not differ between biomass coming from different types of grasslands/biotopes. The results support the hypothesis. The sites studied were located in altitudes from 400 to 800 m a.s.l., water availavility ranged from mesexerophytic to hydrophytic conditions and nutrient availability ranged from mesooligotrophic to eutrophic conditions. According to plant species composition, the stands corresponded to stand types Alopecuretum pratense, Phalaridetum, Poetum pratense, Arrhenatheretum elatioris, Festucetum pratense and the ruderal stand type. In spite of these differences, biogass production estimated according to ZIFO was very similar for all stands, i.e. in a range of 518 {--} 546 NL biogas per kg organic substances in dry matter and had almost identical methan content. The results indicate that, in assessment of suitability of herbaceous stands for biogass production, biomass production is of greater importance than plant species composition.
|
|
|
Energy use of phytomass in the South Bohemia Region
NEJEDLÁ, Alice
This bachelor thesis focuses on energetic use of phytomass in the Southern Bohemia. There was identified real and potential production of biomass in the Czech Republic and in the Southern Bohemia. According to the information acquired from literature, internet and questionnairy research there was identified volume of use of energetic sources and biomass deliberately cultivated in Southern Bohemia for energetic use. The results of this research show that Czech Republic meets the commitment to cover 6% of energetic consumption by renewable energy source ? it even reached 8%. Southern Bohemia produces 4,5% of all renewable energy sources of the Czech republic. The research shows that there is a lack of biomass in the Czech Republic, that is why it must be produced by growing energy crops (PEP) and fast growing woods (RRD). Energy crops produces in the Czech Republic are: Sorrel Feed, Miscanthus Chinese, Knotweed, Reed Canary Grass, Hemp, Sorghum. As fast growing woods there are willows and poplars recommended. The most of the renewable energy sources in Southern Bohemia is represented by biomass and its combustion. Its potential is huge, mostly the waste of wood processing ? sawdust and wooden chips, is the most used fuel. Energetic use of biomass has a good perspective in Southern Bohemia. There is still unused waste from logging and straw in agricultural production. There is still hidden potential in growing energy crops and fast growing woods. The development is defended especially by economic reasons and state financial support.
|
|
|
Possible utilization of grass material
KOBERNA, Daniel
The objective if this degree work is creating a survey of possible uses of surplus grass material which is caused by animal farming reduction and by bringing the ground in less fertile areas of our country to a standstill. In the work possible uses of the grass are described, especially its use in the energy industry as a fuel source for the production of heat and biogas. Classical usage of the grass material as a food source for livestock or for the production of compost is described here as well. Examples are shown there of energy kinds of grass, which seems to be a promising renewable resource of biomass for favourable economic results. The harvest of the grass material and its consequent prossesing is done by production lines, that is why a survey of such lines and their economic figures connected with the operation of these machines is also included in this work. The economic part of this work contains many formulae that can be used for counting out all the costs connected with the operation of the grass harvest machine and for evaluating the effectiveness of the return on investment into this machine
|
|
| |
|
|
Possibilities of utilization grass material.
ŠVARC, Miroslav
At work, there are introduction primary kinds of technology of processing grass material. There are description composting waste, incineration, flash pyrolysis and anaerobic digestion too. At the close, there are introduction possibilities of utilization of biogas.
|
|
|
The Biogas Production in the Agricultural Company - Case Study.
Jaša, Martin ; Syrovátka, Oldřich (advisor) ; Čermák, Jan (referee)
In my thesis I described European and national attitudes towards the energy production from renewable sources, technology of biogas production and its usage in particular. The use of technology was described in practical, already standing and functioning project of the biogas station in Budisov at Trebic. I described the feasibility and economic efficiency of such a project. As the result of the thesis I chose to point out at the total convenience of the project not only from the economic point of view but also from the usefulness prospect for the surroundings thanks to the collateral heat creation during the biogas production.The whole work could discuss the direction which the electricity production trend could venture in the future.
|
|
|
Feasibility study and analysis of projects of biogas stations in Czech Republic
Lodr, Jakub ; Pavlová, Eva (advisor) ; Kubíček, Jiří (referee)
Diplomová práce zahrnuje poslední vývoj v oblasti obnovitelných zdrojů energie. (OZE).Hlavním úkolem je seznámit čtenáře se současnými otázkami týkajícími se bioplynu,bioplynových stanic a dalším technologickým problémům. První část je věnována právnímu rámci této problematiky. V dalším oddíle je popsáno současné tržní prostředí,doplněné charakteristikou nejdůležitějších podniků v odvětví. Poslední část diplomové práce by měla pomoci najít způsob jak ocenit investice do obnovitelných zdrojů energie.
|
|
|
Bioenergy as an Alternative Source of Fuels for Transport in World Economics
Běláčková, Adéla ; Vošta, Milan (advisor) ; Kašpar, Václav (referee)
Práce pojednává o využívání bioenergie jako obnovitelného a environmentálně šetrného paliva pro dopravu. Zabývá se otázkou schopnosti biopaliv postupně nahradit ropná paliva v dopravě a snížit tak emise skleníkových plynů i energetickou závislost dopravy na nabídce ropy. Hodnocenými biopalivy jsou bioetanol, biodiesel a bioplyn. Hodnotícími faktory potom environmentální přínosy spojené s jejich využíváním, cenová konkurenceschopnost a odhadované produkční kapacity. Práce vychází především ze zkušeností získaných v zemích Západní Evropy, USA a Brazílii.
|
guest ::
