
02/04/09, 08:42 AM
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Join Date: Dec 2003
Posts: 3,693
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Quote:
Originally Posted by haypoint
The cities and townships that have outlawed those outside wood boilers have a different view than those that praise its virtues.
They didn't outlaw burning wood that is too wet, they outlawed the heater themselves.
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Not always though. Some were carefull in allowing specific types operated in certain ways.
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A short stack won't, by design, pull/draw like a tall chimney.
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That's not the issue, it's plume loft. It helps tremendously if you get the chimney up over the height of nearby roofs. This helps keep the smoke up and over people, particularly the neighbors.
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All wood boilers that operate, by design, at temperatures below 200 degrees F (many at below 150 degrees) suffer from incomplete combustion.The relatively cool water surounds the fire chamber allowing unburned gasses up the chimney.
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That is absolutely true when talking about cheap units. However, when you get into the expensive gasification units, it's no longer so true. Yes, the water jacket itself is still a thermodynamically cold encasement. The brick lined combustion chamber runs at a much higher temperature though, so combustion is much more complete. This means those units don't smoke nearly as much.
That's why states like Maine, Maryland and others have language allowing for clean burning units, and have lists of units that are approved in the states.
Now local jurisdictions have less resources than the states, and have much more direct contact with the complaints. So many times they simply ban them to end the flood of nuisance complaints they receive and have to deal with.
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