Energia armazenada nos resíduos do desdobro de toras de Eucalyptus grandis

Abstract

The aim of this experiment was to evaluate the energy stored in the various wastes of the sawing of Eucalyptus grandis logs. Ten logs of Eucalyptus grandis were used. The logs were cut from 15-year-old trees, taken from an area of the Federal University of Lavras. The logs were sawed with a simple band saw and then the planks were re-sawed with a circular saw. The waste has been classified as slabs, shavings, sawdust and bark. The energy stored in the waste was determined by superior calorific value (SCV) and then converted into kWh. The volume of waste generated represented 56% of the volume of logs. The energy stored in a composite of slabs and shavings and in the sawdust were not statistically different and showed a SCV of 4,735 kcal.kg-1 . The energy stored in the bark was significantly statistically lower and showed a SCV of 3833 kcal.kg-1.