Biomass wood residue cover

Logging residue is an inexpensive and easily accessible source of biofuel. But to improve the energy content, the residue must first dry on the ground and then be stored in piles for several months. To shelter the piles from moisture through rain, snow, and ice, Walki has developed a paper-based, waterproof cover that can be chipped and burned together with the residue. Walki’s biomass cover might not look high-tech, but it’s an ingenious invention that efficiently improves the energy content in logging residue.

The cover itself is a four-meter wide laminate, mainly produced from renewable fibrous materials. It shelters the top of a pile, leaving the sides open to allow moisture to evaporate. A thin plastic layer within the cover makes it waterproof and strong, but because of the characteristics of the plastic, the cover can later be chipped along with the residue and used as fuel. A six-meter wide version that can cover even bigger piles of logging residue and other wood-based biofuels is in development.

Walki Group
www.walki.com