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Estudo Geral
Master thesis . 2016
Data sources: Estudo Geral
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Contribuição para a caracterização da biomassa florestal arbustiva

Authors: Ribeiro, Jorge Santos;

Contribuição para a caracterização da biomassa florestal arbustiva

Abstract

Biomassa florestal é um recurso renovável passível de aproveitamento e com crescente valorização económica. O presente estudo pretende caracterizar combustíveis florestais e biomassa provenientes de espécies arbustivas e verificar a viabilidade de integração destes em sistemas de aproveitamento energético. Como tal são desenvolvidos modelos alométricos para avaliação da carga de combustível florestal por forma a quantificar disponibilidade de biomassa em termos de produção florestal e avaliar percentagens de coberto vegetal relativamente a espécies arbustivas tais como: Erica sp., Chamaespartium Tridentatum e Cytisus sp. Estes modelos são suportados por dados recolhidos em ensaios de campo e pela literatura, sendo que se recorre nos ensaios à avaliação da percentagem coberto vegetal pelo Método Linha Interceção (MLI) e à determinação da densidade aparente (kg/m3). Estes parâmetros são obtidos por meio de ensaios laboratoriais e comparados com dados da literatura por forma a validar os resultados. No decorrer do presente trabalho é feita também uma análise sobre as fases de crescimento de arbustos tendo em vista uma otimização em ciclos de colheita focando os padrões de carga típicos destas espécies.

Forest biomass is a natural renewable resource with an increasing economic valorisation. The present study focus shrub fuel characterization regarding its potential for integration in energy production systems. Therefore, there are developed allometric models to predict forest fuel load supported by data collected from field experiments in order to ascertain about biomass availability and to check the feasibility of exploitation as a product. The shrub fuel characterization and load determination techniques are assessed resourcing to an evaluation of the cover percentage of shrub species such as Erica sp., Chamaespartium Tridentatum, Cytisus sp. The evaluation follows the Line Intersect Method (MLI) and determination of fuel bulk density. The data retrieved from the experiments is compared with other studies reference in order to validate the results. In this studies there is also an analysis of the shrubs growing phases regarding the optimization in harvesting cycles and the growth patterns adjacent to this species.

Dissertação de Mestrado em Engenharia Mecânica na especialidade de Energia e Ambiente, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.

Country
Portugal
Related Organizations
Keywords

Aproveitamento energético, Biomassa florestal, Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green