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Spalné teplo a výhřevnost vybraných energetických trav stanovení na základě elementární analýzy
SEDLÁKOVÁ, Aneta
Renewable energy sources are largely represented by biomass energy, which is then used in many ways. Among the most common are the phytomass direct combustion to heating. For these purposes, in many cases growned Reed canary grass, which could compete with other, more efficient energy grass Szarvasi -1. Aim of this work is to compare the suitability of selected energy grasses (Phalaris arundinacea L. and Elymus elongatus subsp. Ponticus cv. Szarvasi-1) for purposes of direct combustion in terms of the energy yield of the unit of production and unit of area under various intensities of fertilization.
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Yield potential of selected energy grass
SAMEC, Jakub
The aim of this thesis is to compare the yield and suitability of selected energy grass (Elymus Elonganus , Phalaris arundinacea L.) for direct combustion . The work includes a review of literature dealing with characteristic energy grasses agrotechnical requirements and general issues of growing. Attention was paid mainly to the aforementioned grass. The practical part deals with the establishment of field trials and monitoring of the proceeds from each harvest. Vegetation Elymus Elonganus, Phalaris arundinacea L. were based variant fertilized intensively, extensively and digestate .
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Economical aspects of qrowing of selected energy crops
VESELÝ, Petr
The society is trying to find new and renewable technologies for securing the increasing consumption of energy. This kind of rediscovery source could be biomass. The question is which of the many types of biomass would be the best for economic effectiveness. The bachelor thesis solves the economic evaluation of selected plants and their potentially suitable for energy utilisation. For comparison was chosen four types of energetic plants: Cannabis sativa L., Phalaris arundinacea L., Miscanthus giganteus, Zea mays L. Literary part solves the general description of renewable energy sources, especially biomass. Next part of thesis is focused on agro - technical goings in planting of these aforesaid species of plants and methods of energy use of selected plants. In analytical part were each plants compared to other in economic aspect within the current price of inputs and outputs. From used the economic analysis was subsequently determined perspective of particular plants to their energy utilization for direct combustion. Cannabis sativa has a profit 1,991 CZK/ha without grants. With grantss it has a profit 8551 CZK / ha. The average purchase price of dry weight is 2350 CZK / t The total cost per year is 18 289 CZK / ha. Phalaris arundinacea has costs quantified at 7982 CZK. Financial income from one hectare is 268 CZK. The profit with grants is 6829 CZK / ha. Miscanthus giganteus shows a loss 3,944 CZK / ha, but with grants has profit 2,617 CZK / ha. The cost per hectare is 17944 CZK. Costs of cultivating Zea mays are 24013 CZK / ha. The graph shows that the loss from one hectare is 2293 CZK and with grants is profit 4269 CZK.
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Environmental aspects of energy crops growing - production of CO2eq
HOVORKOVÁ, Sandra
The task of the thesis: " Environmental aspects of growing energy crops - production CO2 eq " is processed agricultural engineering literature review summarizing selected cultivation of energy plants ( Reed canary grass - Phalaris arundinacea ) and its growing impact on the environment with a focus on the production of carbon dioxide (CO2). The content of their work is to create a framework for calculating emission load growing canary rákosovité in terms of CO2 in the SIMA - PRO.
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