Pellet Fuel is a biomass fuel manufactured
from ground wood, waste wood, bark, and other
combustibles which is pressed through dies
at very high pressure. Wood Pellets can be
purchased in bulk or in bags. The energy content
of pellets is more constant, than corn because
of lower moisture content (4 -8%).As a rough
approximation, 17.5lbs of wood pellets provide
the same amount of heat as a gallon of heating
oil. With these characteristics, wood pellets
burn very efficiency. They are also very easy
and safe to transport and store. Wood pellets
have an average net Btu rating of 8,200 Btu/lb.
Corn is a fuel that is widely
available in many parts of the country and
can be used in the Multi-Heat boiler. Corn
can be purchased in bulk or by the bushel
(56 lb bags).
The energy of content of corn is not constant,
but approximately 20 lbs of corn is equal
to a gallon of fuel oil. On average, the
energy content of corn is between 8,000
to 8,500 Btu/lb of dry matter. One Btu (British
Thermal Unit) is the amount of energy needed
to heat one pound of water one degree Fahrenheit.
To get the net dry Btu rating on corn one
needs to factor in the moisture content.
Average moisture content for corn is 12-15%.
This gives corn an average BTU rating of