106:, but when properly burned, studies show that burning wood is still one of the most environmentally friendly heating options. In 2007, EPA began a voluntary program to encourage manufacturers to reduce particulate levels. In 2015, the U.S. EPA updated its clean air standards for residential wood heaters, this is a mandatory standard for sales in the United States. The revised regulations apply only to new products and will not affect existing wood heaters. At this point, the only boilers that pass these emission controls are gasification models.
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and the weather proof housing. The fire box ranges from 2 to 5 feet long and can be as tall as 4 feet. The firebox and heat exchanger are surrounded by water or a glycol-water solution, which absorb heat from the burning wood. The heated water is generally circulated through insulated underground lines to a heating load, where the heat can be transferred from the water to various heat emitters.
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The outdoor wood boiler is a variant on the indoor wood, oil or gas boiler. An outdoor wood boiler or outdoor wood stove is a unit about 4-6 feet wide and around 10 feet long. It is made up of four main parts- the firebox, which can be either round or square, the water jacket, the heat exchanger,
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installed, to allow for a more efficient burn and treatment of the exhaust before it leaves the unit. There is a considerable difference in cost between these and standard units. These are far less popular than gasification outdoor wood boilers.
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High efficiency outdoor wood boilers use down draft gasification must meet strict EPA Phase 2 Certification. Outdoor wood gasification boilers can burn between 30% - 50% less fuel than its traditional counterpart.
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Gasifier wood boilers use secondary combustion air to burn additional wood gases. The most sophisticated systems use computer controls to direct air at different stages of the burn process at variable volume.
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Outdoor wood boilers are a topic of environmental controversy. An improperly used or built outdoor wood boiler can produce wood smoke with excessive unburned
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will not be fully rendered. While functional, these models take more work and are far less efficient than some newer more efficient models.
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Standard outdoor wood boilers heat the firebox and the smoke goes out the exhaust straight. If not run hot enough, the
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243:"High Efficiency Residential Wood Boiler Modeling Assumptions Based On Monitored Data"
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adapted for set-up outdoors while still transferring the heat to interior buildings.
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216:"FACT SHEET: Summary of Requirements for Wood-fired Hydronic Heaters"
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Insulated underground line is run from the boiler to the building.
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sfn error: no target: CITEREFWood_Heat_Organization2011 (
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Secondary combustion (gasification) outdoor wood boilers
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90:How a gasification outdoor wood boiler works.
250:Michigan Department of Environmental Quality
230:"Outdoor Wood Furnace and Boiler Pollution"
61:will be thick and black, and the resulting
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73:Some newer outdoor wood boilers have a
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174:sfn error: no target: CITEREFUS_EPA (
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124:"Choosing the Right Hydronic Heater"
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128:Environmental Protection Agency
282:Residential heating appliances
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69:Catalytic outdoor wood boilers
53:Standard outdoor wood furnaces
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190:"Wood Stove EPA Regulations"
36:is a variant of the classic
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151:Wood Heat Organization 2011
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241:Kish, Steve (March 2007).
228:Blake, Uni (2006-02-14).
20:Outdoor wood-fired boiler
234:Environmental Chemistry
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277:Residential heating
75:catalytic converter
34:outdoor wood boiler
218:. 4 February 2015.
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132:. Retrieved
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59:exhaust gas
261:Categories
203:Blake 2006
134:2018-11-28
110:References
44:Technology
38:wood stove
292:Furnaces
272:Heaters
267:Boilers
287:Stoves
170:US EPA
246:(PDF)
176:help
157:help
32:The
63:ash
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