Why it's good / how it works
Why it's good
Red Super, EKO and Atmos wood gasification boilers
provide a convenient, safe and environmentally friendly way
to heat your home and domestic hot water with wood. The
boilers assure the independence and self-reliance that
heating with wood provides.
Because these boilers use wood gasification, they give
unusually high overall heating efficiency. They use
substantially less wood than conventional and outdoor wood
boilers with no visible smoke when properly operating.
Wood gasification boilers burn so clean, they result in
cleaner air for everyone. They also help to substantially
reduce greenhouse gas emissions.
Wood gasification boilers enable you to increase the warm
security of your home in a safe, environmentally responsible
way.
Fuel Comparison
Fuel Type BTU/Unit
Softwood 15 million BTU/cord
Hardwood 24 million BTU/cord
Wood Pellets - 10% moisture 16 million BTU/cord
Natural Gas 100,000 BTU/therm
Propane 91,600 BTU/gal
#2 Heating Oil 138,500 BTU/gal
Anthracite Coal 28 million BTU/ton
Sources: U.S. Department of Energy; The Biomass Energy
Foundation
1 cord of hardwood = 173 gallons of #2 heating oil
1 ton of pellets = 150 gallons of #2 heating oil*
1000 gallons of #2 heating oil = 5.8 cords of hardwood
1000 gallons of #2 heating oil = 6.8 ton of wood pellets*
What is "wood Gas" or "wood gasification"?
When wood is heated it gives off gas under the right
conditions. These gases sometimes condense in a chimney
as creosote.
Wood gas consists of:
Nitrogen 50-60%
Hydrogen 20%
Carbon monoxide 20%
Methane 0-10%
How it works
In a wood gasification boiler the wood is loaded into the
upper chamber. A traditional fire is built and lighted. The
door is the closed, the fan is turned on and air is forced in
pushing the gases into the lower chamber through a ceramic
slot or "nozzle" in the bottom of the firebox. The burning
gases are mixed with super-heated air that is forced through
the ceramics below the wood. The combination of hot air
mixed with the “wood gas” from the top enters into the lower
chamber and burns in a blow torch like flame at
temperatures around 2000 to 2200ºF.
At those temperatures the gases that make creosote are
eliminated, smoke becomes almost non-existent, and very
little ash is left.
The 2000ºF gases then pass to the rear of the boiler and
pass through the smoke tube heat exchanger, a series of
tubes that take the flue gases from the bottom of the stove,
through the water, toward the chimney vent. These gases
exit the boiler at temperatures around 350 to 400ºF. All the
heat possible is pulled from the fire into the water through
these tubes.
These boilers are a safe and environmentally friendly way to
heat your home and domestic water with wood. Because the
boilers use wood gasification combustion, they give
unusually high overall heating efficiency.
Wood gasification boilers burn so clean and efficient that
they result in cleaner air for everyone.
Boiler output should be based on:
A buildings heat demand should be calculated by a qualified
central heating professional. To select proper boiler, the
calculated value should be increased by 20% ( boiler over-
design )
Water Storage
Water Storage is a way of storing heat after the fire burns
out, this increases the efficiency and extends the life of the
boiler.
There are two main types of water storage, pressurized and
unpressurized.
Pressurized consists of an insulated tank that can hold the
same pressure as the rest of the system, the same water
flows through the wood boiler and the rest of the heating
system.
Unpressurized storage is an insulated tank of water that
holds no pressure and is open to the atmosphere, heat must
be pumped in and out using a heat exchanger.
Water Storage Calculation Sheet.pdf
Piping Diagrams
Recirculation Loop
Wood Boiler With No Storage
Wood Boiler With Water Storage
Wood Boiler With Water Storage And Dip Tube
Simplest Pressurized Storage
*per manufacturer
Red Super, EKO and Atmos wood gasification boilers
provide a convenient, safe and environmentally friendly way
to heat your home and domestic hot water with wood. The
boilers assure the independence and self-reliance that
heating with wood provides.
Because these boilers use wood gasification, they give
unusually high overall heating efficiency. They use
substantially less wood than conventional and outdoor wood
boilers with no visible smoke when properly operating.
Wood gasification boilers burn so clean, they result in
cleaner air for everyone. They also help to substantially
reduce greenhouse gas emissions.
Wood gasification boilers enable you to increase the warm
security of your home in a safe, environmentally responsible
way.
Fuel Comparison
Fuel Type BTU/Unit
Softwood 15 million BTU/cord
Hardwood 24 million BTU/cord
Wood Pellets - 10% moisture 16 million BTU/cord
Natural Gas 100,000 BTU/therm
Propane 91,600 BTU/gal
#2 Heating Oil 138,500 BTU/gal
Anthracite Coal 28 million BTU/ton
Sources: U.S. Department of Energy; The Biomass Energy
Foundation
1 cord of hardwood = 173 gallons of #2 heating oil
1 ton of pellets = 150 gallons of #2 heating oil*
1000 gallons of #2 heating oil = 5.8 cords of hardwood
1000 gallons of #2 heating oil = 6.8 ton of wood pellets*
What is "wood Gas" or "wood gasification"?
When wood is heated it gives off gas under the right
conditions. These gases sometimes condense in a chimney
as creosote.
Wood gas consists of:
Nitrogen 50-60%
Hydrogen 20%
Carbon monoxide 20%
Methane 0-10%
How it works
In a wood gasification boiler the wood is loaded into the
upper chamber. A traditional fire is built and lighted. The
door is the closed, the fan is turned on and air is forced in
pushing the gases into the lower chamber through a ceramic
slot or "nozzle" in the bottom of the firebox. The burning
gases are mixed with super-heated air that is forced through
the ceramics below the wood. The combination of hot air
mixed with the “wood gas” from the top enters into the lower
chamber and burns in a blow torch like flame at
temperatures around 2000 to 2200ºF.
At those temperatures the gases that make creosote are
eliminated, smoke becomes almost non-existent, and very
little ash is left.
The 2000ºF gases then pass to the rear of the boiler and
pass through the smoke tube heat exchanger, a series of
tubes that take the flue gases from the bottom of the stove,
through the water, toward the chimney vent. These gases
exit the boiler at temperatures around 350 to 400ºF. All the
heat possible is pulled from the fire into the water through
these tubes.
These boilers are a safe and environmentally friendly way to
heat your home and domestic water with wood. Because the
boilers use wood gasification combustion, they give
unusually high overall heating efficiency.
Wood gasification boilers burn so clean and efficient that
they result in cleaner air for everyone.
Boiler output should be based on:
A buildings heat demand should be calculated by a qualified
central heating professional. To select proper boiler, the
calculated value should be increased by 20% ( boiler over-
design )
Water Storage
Water Storage is a way of storing heat after the fire burns
out, this increases the efficiency and extends the life of the
boiler.
There are two main types of water storage, pressurized and
unpressurized.
Pressurized consists of an insulated tank that can hold the
same pressure as the rest of the system, the same water
flows through the wood boiler and the rest of the heating
system.
Unpressurized storage is an insulated tank of water that
holds no pressure and is open to the atmosphere, heat must
be pumped in and out using a heat exchanger.
Water Storage Calculation Sheet.pdf
Piping Diagrams
Recirculation Loop
Wood Boiler With No Storage
Wood Boiler With Water Storage
Wood Boiler With Water Storage And Dip Tube
Simplest Pressurized Storage
*per manufacturer
 | |  | |  | |  | |  |
| = |
| + |
| Unpressurized Storage and Heat Exchanger |