Wood pellet moisture is important in all phases of manufacturing and processing. Homes and businesses throughout the world are looking at wood pellet fuel as an alternative or supplementary source for heat. Wood pellets yield high BTU?s at an economical price. Moisture measurement is important in all stages of processing. Cord wood that you might burn in a fireplace or fire pit generally has a moisture from 20 to 60 %. Cord wood is relatively inefficient in energy conversion. Wood pellets offer high BTU energy yields.
Wood pellets are processed from waste materials that are unsuitable for other uses. The waste material is typically sawdust and chips from hard and softwood used in manufacturing flooring or furniture, or other waste wood. The raw material is processed to a moisture level of 12 to 18 % and shipped and purchased on a bone dry weight basis. Moisture control is important to avoid agglomeration or clumping.
This processed sawdust is then compressed to either a standard level 10% for standard pellets, or 8% for premium pellets. Pelletizing is essentially a compression process under high pressure and temperature in which the natural wood lignin binds the wood fibers together without having to add expensive resins.
Process Sensors MCT-360WP can make all these measurements with analog outputs for control, and digital interface for data archiving.
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