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Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.5/570

Title: Avaliação do potencial energético dos residuos sólidos dos lagares do Alentejo
Other Titles: Valuation of the energetic potential of the solid residues of presses of the Alentejo
Authors: Freitas, Manuel Rodrigues
Advisor: Avillez, Francisco Miranda
Duarte, Elizabeth de Almeida
Keywords: olive husk
bagaço de azeitona
presses
lagar
generation of electricity
geração de electricidade
economic analysis
analise economica
organic rankine cycle
Alentejo
Issue Date: 2007
Abstract: This study aims to evaluate the energy potential of the solid residues of the presses of Alentejo, by applying electricity cogeneration and generation technologies using the Organic Rankine Cycle (ORC), and to show the respective economic analysis. The option for an ORC system at the centre of this analysis was justified based on the advantages and disadvantages of this cycle in relation to the water steam cycle. As an alternative, cogeneration technology was chosen, with a steam boiler and condensation steam turbine. The objective is the attainment of electric and thermal energy and the elimination of the solid residues to preserve the environment. In the mixture of extracted olive husk and olive leaves with the weighed percentages of 81% and 19% respectively, the following parameters are determined: average moisture content (9,64%); averages fat content (1,50%); and inferior calorific energy (4 819 kcal/kg). Consequently there are calculations for two alternatives: one with a central ORC and another one of cogeneration, producing about 2 MW power by consuming the available biomass. In the economic analysis the following criteria are used: BLUt (unitary liquid benefit) in the useful time (t), the VLA (actualized liquid value) and the TIR (internal tax of profitability).
Description: Mestrado em Olivicultura, Azeite e Azeitona de Mesa - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/570
Appears in Collections:BISA - Dissertações de Mestrado / Master Thesis

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