People have been using simple indoor wood stoves for a very long time. The idea is very simple. You burn wood inside of a cast iron stove and the heat radiates out into the air while the exhaust from the combustion escapes out of a flue into the air outside. A wood-fired boiler uses a similar concept to provide heat and, in some cases, hot water to your Chester VT home.
The Firebox
Like an indoor wood-burning stove, an outdoor wood boiler uses a firebox to burn wood. The firebox is normally constructed out of a refractory material like fire brick. The wood, or other biomass, is loaded into the firebox and lit.
The Syngas
When wood burns, it releases smoke and a combination of other gases. These gases are called synthesis gas, or syngas for short. In the case of an indoor wood burning stove the process ends here and all of that gas is released to the outdoors through the flue. But an outdoor wood burner actually uses these gases to produce even more heat.
Burning the Syngas
Burning the syngas requires a lot of heat. To achieve enough heat, some wood boilers use an insulated, secondary chamber that burns the gases at temperatures as high as 2000 degree Fahrenheit. This second burning of the syngas allows wood boilers to achieve very high efficiency. By burning the gases and much of the physical fuel there is very little waste product.
The Water Jacket
After the syngas is burned, the heat is transferred to water through a series of heat exchangers that double as the flue. The water is pumped to the house and used to heat the home and provide hot water to the house.
If you have questions about wood boilers and if one might be a good choice for your home in Chester VT, then contact the experts at HB Energy Solutions. Our technicians can answer any questions you might have.
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