Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Combustion characteristics of fuelwoods.

Abstract

Biomass, mainly fuelwood, accounts for 7% of primary energy consumption in South Africa and it is estimated that a total plantation area of 500 000 ha will be required to meet fuelwood deficits by the end of the century. The combustion characteristics of 20 fuelwood species (11 hardwoods, 9 softwoods) were investigated in a single particle combustion rig in order to provide an absolute measure which might be combined with silvicultural factors when selecting appropriate fuelwood species. Ignition time was closely related to density and provided a useful assessment of the flammability of the species. Reasonably consistent rankings for 5 combustion parameters were obtained for the hardwoods: Olea europaea > Ptaeroxylon obliquum > Maytenus acuminata > Eucalyptus maidenii > Terminalia sericea > Eucalyptus maculata > Eucalyptus delegatensis > Acacia sieberana [sieberiana] > Grevillea robusta > Gmelina arborea > Erythrina lysistemon. The general properties of a good fuelwood are discussed.