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Woodchipping is the act and industry of chipping wood for pulp or processed wood products.
Timber is converted to woodchips and sold, primarily, for paper manufacture. Forestry practices such as short rotation coppice are the usual methods adopted as a source of wood but old growth forests are also used, raising opposition from environmental organisations.
Uses of wood chips includes the manufacture of particle board (or chip board) and other engineered woods, mulch and fuel.
SOURCE: en.wikipedia.org/wiki/Woodchipping |
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Wood Chips: Wood chips can be made from waste wood, brush, saplings, limbs, tree slash from logging operations, and from forestry and roadside maintenance operations. Wood chips do not need to be made from old standing timber. Other advantages are:
- Wood chip prices are relatively stable between $15 and $30 per ton, and are often available free from tree services working in the neighborhood..
- The energy required to chip wood is a fraction of the energy required to make pellets. A wood chipper uses about the same amount of energy per pound of product as a small wood splitter.
- Green chips can be used immediately without drying in stacks for a year (like cord wood) and without using process energy (like pellets)..
- Chips can be transported and unloaded by dump truck. Because they are generally available locally, long distance haulage, packaging, and energy consumption can be reduced.
- The supply of chips is not limited by another industry's waste output.
- Fuel growing methods, such as brush and coppice farming can produce ideal wood for chipping on a sustainable basis with a very high yield per acre, and a short cycle. Coppicing can be mixed with conventional timber forestry to maintain an ecological balance
SOURCE: Stephen Redmond - www.sredmond.com/vthr_index.htm |
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BioBricks |
BioBricks™ are a perfect hardwood replacement for use in ALL wood burning stoves. One ton of BioBrick provides The heat output of a full cord of wood. Easy to store, Handle and use in your wood burning stove.
SOURCE: http://www.nebioproducts.com/ |
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Wood Pellets |
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Wood pellets are a type of wood fuel, generally made from compacted sawdust. They are usually produced as a byproduct of sawmilling and other wood transformation activities. The pellets are extremely dense and can be produced with a low humidity content (below 10%) that allows them to be burned with a very high combustion efficiency. Further, their regular geometry and small size allow automatic feeding with very fine calibration. They can be fed to a burner by auger feeding or by pneumatic conveying. |
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Comparing the costs of commonly used fuels per million British thermal units on a delivered basis makes the economic argument for wood chips clear:
Oil at $3.50 per gallon: $35 per million Btu
Propane: $28 per million Btu
Natural gas: $18 per million Btu
Wood chips at $50 per ton: $8 per million Btu |
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