Low density hardwood utilisation for energy | Mīksto lapkoku koksnes izmantošanas iespējas enerģētikā
2009
Bumanis, K., Latvia Univ. of Agriculture, Jelgava (Latvia) | Skrupskis, V., Latvia Univ. of Agriculture, Jelgava (Latvia)
Today the use of wood for energy transformation process is topical due to climate change and decline of fossil fuel availability. Wood is used both for direct energy conversion for heating and for co-generation where electricity is produced in addition to producing heat. The European Union has raised ambitious targets for renewable energy use where wood plays important role for achievement of these goals. The aim of study is to evaluate the low density hardwood species energy properties there were investigated aspen, white alder, aspen hybrid and plantation willow specimens. Experiments were carried out according to the methodology included in technical specifications developed by the Technical Committee TC 335 Solid biofuels of European standardization body (CEN). Experiments and calculations carried out showed that at 15 % moisture content calorific value of white alder is 15.45±0.11 MJ/kg, plantation willow - 15.37±0.13 MJ/kg, aspen - 15.35±0.29 MJ/kg, but aspen hybrid - 14.60±0.36 MJ/kg. The most beneficial tree species of wood energy production, when evaluate from economical point of view, is aspen hybrid, taking into account the growth rate up to 15 years (22 m**3/ha). There are common energy wood product specifications and production quality system worked out in Europe which could offer broader market available for wood energy companies in Latvia after implementing these guidelines and practises.
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