Guest Post: Elaine M. Wolf
Who knew two years ago, when we made the decision to purchase and install a free standing wood fired gasification boiler, that we would be operating virtually oil free this Winter season? It has given us energy independence because we control the fuel source – wood. It not only provides heat for our home, but as a bonus feature, heats our hot water!
A wood gasification boiler works on the principle of taking wood and baking it in the upper chamber of the boiler so that it creates wood gas (smoke). This wood gas contains volatile organic compounds that contain a tremendous amount of energy. The wood gas is then redirected by a fan through a slit in the ceramic floor that separates the upper chamber from the lower chamber and contains hot coal beds. In the lower chamber the wood gas mixes with secondary air and explodes into a flame of approximately 2000 degrees F. These superheated gases are then circulated through heat exchangers where the hot gases heat up a surrounding water jacket. These gases then exit the gasification boiler at about 400 degrees F. The hot water is then pumped through a series of pipes that connect with the baseboard heaters in the home as well as the domestic water supply.
Gasification boilers are prevalent in Europe where heating oil is very expensive. One cord of hard wood, which measures 4’ x 4’ x 8’ contains the energy equivalent of 197 gallons of home heating oil. At $4.00/gallon that is $788.00. We can purchase a cord of wood for $210.00. You can see where the cost savings become attractive. With an initial investment of $6,500.00 for a ‘Tarm’, Scandtec, Solo Plus gasification boiler and a federal tax credit of $1,500.00, our investment will pay for itself after two years.

























