Recently, the demand for fuel pellets has also grown quickly. However, wood is not the only suitable feedstock for manufacturing pellet fuel. A wide array of biomass materials has been applied. Biomass pellets are generally a superior fuel when compared to their raw feedstock. High density and high energy content, standardized properties and consequently reduced cost for transport storage and handling makes pellets a preferred choice over unprocessed biomass for fuel applications. The standard shape of a biomass pellet is a cylinder, having a length smaller than 38 mm and a diameter around 7 mm. They are also easier to handle and use in automated feed systems.
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