Biomass and Bioenergy

Biography

Biography: Spirchez Cosmin

Abstract

In the paper shown the importance of the physical and energetic properties of straw briquettes. The density is much than the firewood. The value of density obtained is 1184 kg/m3. The porosity is very low and as  aresult the flame produced during combustion is more dense than that produced by the burning.The value of Gross calorific is 19619 kJ/kg, and 19767 kJ/kg for net calorific value. The ash of  content is 5.8%. Straw briquettes are considered a much better wooden fuel so the advantages are: improvement of physical characteristics, shrink storage volume 12ː1, improvement burning behaviour with a much higher calorific compared to wood (1 ton of briquettes = 5 cubic meters of wood), increasing the volume of energy density in relation to the consumption of material, very few scrap after combustion and boilers much clean, easy in manipulation, contains no additives or chemical liants, burn almost without smoke, no CO2 emissions, during combustion doesnˈt cane the flame. Biomass is the most important source of renewable energy which will play an important role in world energy. The role of the use of energy resources in biomass become all the more important as energy development and independence strategies target 20% renewable sources by 2020. At the moment, the use of biomass provider about 5% of total energy consuption at European level, and in countries Sweden, Austria, biomass provide 15-20%.