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Saturday, April 6, 2013

History of Wood Stoves

By Roger Frost


Archaeologists at South Africa's Wonderwerk Cave recently discovered what could be the earliest evidence of a controlled fire, dating back a million years. However, there are no signs that the cave's resident hominids built a fire pit or a hearth. For that, scientists point to the 750,000-year-old Gesher Benot Ya'aqov site in Israel, where clusters of burned grain, bones, seed, and wood suggest humans made fires in specific spots-perhaps using hearths.

Read more: Know Your Wood-Burning Stoves - Popular Mechanics

Wood burning stoves quickly became popular because of their effectiveness in comparison with fireplaces. Initially they were placed against the opening of the fireplace so that the chimney could be used for the fumes to escape. At that time they were made of a metal box and they had the power to heat the room thoroughly. However, after some time they were modified into a model with its own chimney and flue. This enabled users to place it anywhere in the house without relying upon the position of the fireplace.

The most common stove for heating in the industrial world for almost a century and a half was the coal stove that burned coal. Coal stoves came in all sizes and shapes and different operating principles. Coal burns at a much higher temperature than wood, and coal stoves must be constructed to withstand the high heat levels. A coal stove can burn either wood or coal, but a wood stove can not burn coal. While a given amount of coal gives up more heat than the same weight of wood, coal stoves have largely been abandoned because of environmental concerns.

Biomass fuel is essentially any type of renewable biological material that has good combustion. It obviously has the desirable characteristic that being renewable implies a life cycle, and hence a period of growth which typically ensures it is self-balancing as regards carbon output. The most commonly used biofuels are of course logs, wood pellets and other forms of reclaimed wood, but you can even burn husks from cereal crops and nuts (so long as your particular burner is capable of accepting it).

Not everyone is able to take advantage of a wood burning stove though. Common impediments are an unsuitable property, air pollution regulations, lack of access to or storage space for fuel (principally seasoned wood or specially manufactured pellets). And anyway, there isn't at present the capacity or infrastructure to support everyone converting to wood burners.

Have your wood stove inspected or installed by a WETT Certified Professional. This will ensure safe installation and a WETT inspection will most likely be required by your home insurance company prior to issuing policy.




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