FAQ
Hardwood VS Softwood
Wood pellets are available in either hardwood or softwood. One would think that hardwood would give more heat than softwood, however, once sawdust is compressed into a pellet it is
proven to have comparable heat. Hardwood has less ash than softwood, sometimes as much as three times less ash. A hardwood pellet can produce clinkers, requiring the stove owner to give the fire pot a poke ever so often (as one would do with a wood stove). A softwood pellet does produce more ash than hardwood, the ash is a fluffy ash and may contain less clinkers,
therefore, poking/stirring up the fire pot is not as necessary. Using a softwood pellet, which produces more ash, requires the stove owner to shut down and clean his stove more often, than if using a hardwood pellet, with less ash.
What Are Wood Pellets?
Pellet fuel is a renewable, clean-burning and cost stable home heating alternative, currently used throughout North America. It is a biomass product made of renewable substances (generally recycled wood waste). There are approximately 1,000,000 homes in the U.S. using wood pellets for heat, in freestanding stoves, fireplace inserts, furnaces and boilers. Pellet fuel for heating can also be found in such large-scale environments as schools.
North American pellets are produced in manufacturing facilities in Canada and the United States.
In short, pellet fuel is a way to divert millions of tons of waste from landfills and turn it into energy.
Wood pellets are priced per bag, or by the ton (50 bags), at 40 lbs per bag. At Ferguson's, a full skid of wood pellets is 75 bags (1.5ton), measuring 4 feet by 4 feet, and 6 feet in height.
What is Biofuel?
Cordwood, wood pellets, wood chips, waste paper, along with dozens of other agricultural products and by-products capable of being used for energy, are all examples of biomass fuel. The most compelling principle of biomass is that it is renewable. The remarkable consistency and burn efficiency of pellet fuel produces a fraction of the particulate emissions of raw biomass. Pellet burners feature the lowest particulate matter emissions of all solid fuels burners. Given the proper Sustainable Forest Initiatives and agricultural management, biomass is virtually limitless, and has proven to be price stable in comparison with fossil fuels.
The majority of North America's forest is second-growth, and requires periodic treatment in order to address forest health and fire mitigation. A tremendous amount of unusable material remains on the forest floor after such treatment. This material is rejected by high-end wood product manufacturers but is a perfect resource for commercial pellet manufacturers.
By engineering crops and waste such as cornstalks, straw, and residual forest waste, pellets can utilize millions of tons of waste and put them to work.
Many pellet manufacturers take by-products (like wood waste) and refine them into pencil-sized pellets that are uniform in size, shape, moisture, density and energy content. Why not simply burn raw biomass? First, the moisture content of pellets is substantially lower (4% to 8% water–compared to 20% to 60% for raw biomass). Less moisture means higher BTU value and easier handling especially in freezing situations with green raw biomass materials. Second, the density of pellet fuel is substantially higher than raw biomass (40 lbs. per cubic foot verses 10-25 lbs. per cubic foot in raw material form). More fuel can be transported in a given truck space, and more energy can be stored at your site. Third, pellets are more easily and predictably handled. Their uniform shape and size allows for a smaller and simpler feed system that reduces costs. This high density and uniform shape can be stored in standard silos, transported in rail cars and delivered in truck containers.
What Are The Benefits?
There are numerous benefits achieved by utilizing pellet fuel, including economical and environmental. Pellet fuel is utilized in a varied settings and applications, such as home heating appliances and large scale boilers in commercial operations.
There are an estimated 1,000,000 residences/businesses in the U.S. currently heating with pellets.
- A typical homeowner uses 3 tons of pellets per heating season at a cost of about $825. At an average retail price of $275/ton, pellets offer a fuel cost per million BTU of $20.20. To offer a fuel cost of $20.20 per million BTU, # 2 fuel oil and propane would have to be priced at $2.31/gal and $1.46/gal, respectively. (Fuel Value Calculator, USFS, 2008)
- Wood pellets are equal to oil, when oil is 55 cents a liter, and one ton of wood pellets is equal to one Full cord of wood.
- Direct thermal conversion of 3 million tons of wood pellets displaces the equivalent of almost 8.5 million barrels of #2 fuel oil. That is 356 million gallons! (Energy Information Administration)
- Direct thermal conversion of pellets has an efficiency level of approximately 80%.
- Pellet stoves have extremely low particulate emissions due to their high burn efficiency and the density of the fuel (<1 gm/hr). (Environmental Protection Agency)
- Every ton of pellets used vs. oil reduces CO2 emissions by about 1.5 tons. Total emissions offset this year will be nearly 4.5 million tons of CO2.
- Pellet distribution costs less than the cost of distributing wood chips.
- Wood pellets have a fossil energy ratio (net energy output/fossil energy used) of 12:1. (Net Energy Value Study, University of Wisconsin Green Bay)