Evaluation of reed resources in Latgale region and analysis of its use for energy production | Latgales reģiona niedru resursu izvērtēšana un to izmantošanas enerģijas ieguvei analīze
2010
Cubars, E., Rezekne Higher Educational Institution (Latvia). Dept. of Engineering | Noviks, G., Rezekne Higher Educational Institution (Latvia). Dept. of Engineering
Reed areas in Lubana Lake and Kvāpānu ponds have doubled since 1997 and the lakes of Latvia and pond managements are becoming overgrown, reed harvesting can decrease the eutrophication processes. Reed can be used as a heat energy resource. In Latgale region there are 20 notable lakes and pond managements that comply with certain criterions. The total reed biomass amount in the largest lakes and ponds of Latgale constitute approximately 18 440 tons per year and occupy an area of 2293 ha, total yearly heat energy potential is 93.77 GWh. Having assessed the heating properties of reed, it was concluded that it is similar to wood. There is no need to plant or fertilize reed, they grow by themselves. No need to invest in agrotechnology as it is with energocultures. When harvesting reed in winter over ice, the moisture content is relatively low - 8-12% - and extra energy use for drying is not necessary, the moisture is satisfactory for pellet production. Reed harvesting have some impact on ecosystems, optimal models of reed harvesting in lakes of Latvia should be studied.
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