Stalk biomass drying rate evaluation.

Locally produced bioenergy will boost the national energy security and increase the national energy independency. In order to increase the energy efficiency, improve energy produced quality, and reduce emissions in its thermochemical energy conversion, drying of the biomass to the required moisture content is important in the development of energy productions systems. To avoid overdrying or incomplete drying process characteristics - the drying rates and other parameters, have to be determined. It is known that reed canary grass, reed and hemp are potential energetic crops suitable for fuel production in Latvia. They can be combined with peat to increase fuel durability and density. Drying processes of the above mentioned materials are researched at constant air flow and temperature and at 3 different layer thicknesses. The results are shown in graphs; equations for drying rate calculation are obtained. Comparison of the drying characteristics is demonstrated, to highlight the differences in the drying technology needed for production of fuel with composite structure.

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