Biomass Boilers: Frequently Asked Questions
Why not Biomass boilers?
The CO 2 and other pollutants emitted by the combustion of solid fuels, even fuels derived from environmental friendly sources, are too intense to be used in dense population areas and is not a sustainable solution for all to use.
Source: grassrootscarboncredits.com
Biomass Boilers Smoke?
Traditionally wood was used in open fires or primitive wood stoves, which burned very inefficiently. This not only made it expensive - with up to 85% of the useful heat going up the chimney - but also polluting with smoky fires. Modern wood heating, in contrast, is clean, efficient, convenient and extremely cost effective. Modern boilers control the airflow, use thick boiler insulation and re-burn flue gases giving colourless flue gas. ...
Source: www.arranwoodfuels.co.uk
How Safe are Biomass Boilers?
Modern, sophisticated and fully automatic wood-fuel boilers are very safe to operate, offering three-stage protection systems: A rotary valve forms part of the final fuel dosing system from the fuel transport to the boiler stoker auger. This provides an effective airtight seal, which prevents airflow within the stoker auger and thus inhibits burn back. ...
Source: www.arranwoodfuels.co.uk
How Much Maintenance do Biomass Boilers Need?
Biomass boilers need a lubrication service every 800 hours of operating time and a major service after 2400 hours of operation. In most applications, boilers are not firing all of the time: a school may only clock-up 2400 hours in a year. Even boilers providing base-load heat will still have 98.5% availability, taking service requirements into account.
Source: www.arranwoodfuels.co.uk
Why are biomass boilers more expensive than conventional boilers?
Highly-efficient modern biomass boilers have more complex controls and function differently from conventional boilers – they cost more to produce. On the other hand, your woodfuel boiler will last much longer than a conventional boiler (25 – 30 years rather than 5 – 10). Some suppliers will give a price for the boiler alone, but then you have to add on the accumulator tank and other essential components, and labour. ...
Source: www.conservenergy.co.uk
Are there air permitting requirements for biomass boilers?
Consult your local, state, and national regulations as these will vary by location and project. For national and regional information from the EPA .
Source: www.fuelsforschools.info
Consult your local, state, and national regulations as these will bary by locaton and project.
Source: dnrc.mt.gov
What kind of material is burned in biomass boilers?
Woody biomass fuel can include forest slash, urban tree waste, clean waste wood from construction demolition, pallets, and wood waste from wood products manufacturers. This material can be wood material processed with a chipper or grinder, or compressed into pellets. A primary goal of the Fuels for Schools and Beyond program is to promote the utilization of wood waste from hazardous fuels reduction and other forest treatments on local forests.
Source: www.fuelsforschools.info
Woody biomass fuel can include forest slash, urban tree waste, clean waste wood from construction demolition, pallets, and wood waste from wood products manufacturers. A primary goas of the Fuels for Schools and Beyond program is to promotr the utilization of wood waste from hazardous fuels reduction and other forest treatments on local forests.
Source: dnrc.mt.gov
What are the emissions associated with biomass boilers?
Like other combustion sources, wood boilers emit a variety of pollutants, including particulate matter (PM), nitrogen oxides ( NOx ), carbon monoxide (CO), volatile organic compounds (VOC), sulfur dioxide (SO2), carbon dioxide (CO2), hazardous air pollutants, and trace elements. Particulate matter emissions are minimized by maintaining efficient combustion in the system and if necessary, installing pollution control devices, especially to minimize PM-2.5 emissions. ...
Source: www.fuelsforschools.info
Like other combustion sources, wood boilers emit a variety of pollutants, including particulate matter (PM), nitrogen oxides (NOx), carbon monoxide (CO), volatile organic compounds (VOC), sulfur dioxide (SO2), carbon dioxide (CO2), hazardous air pollutants, and trace elements. Particulate matter emissions are minimized by maintaining efficient combustion in the system and if necessary, installing pollution control devices, especially to minimize PM-2.5 emissions. ...
Source: dnrc.mt.gov
What do biomass boilers actually burn?
The main substances that will be burnt for a domestic biomass boiler are wood pellets and wood chips. When factories produce waste wood from manufacturing, this wood is recycled into pellets. More and more short crop cycle trees are grown and turned into fuel for biomass systems. Its this sustainability and the fact that they are in effect zero-carbon, why people are looking more seriously at installing a biomass boilers.
Do Biomass Boilers Damage Woodlands?
No, local Arran demand for wood fuel has created an island based market for timber and wood residues, which would otherwise be left behind on our hillsides or transported to the mainland at high cost. By removing the material during normal tree felling, the harvested areas are left clear, ready for replanting and are much more attractive than large areas of rotting wood currently experienced in some areas. Trees grow every summer using the energy of the sun to fix carbon from the atmosphere. ...
Source: www.arranwoodfuels.co.uk
Are there emission factors for biomass boilers? Given the variability of fuel (e.g. woodchip) is generalisation possible?
The emission factors can be found here . But you are correct - emission factors are dependent on the fuel (biomass covers a large variety of fuels in a variety of physical forms), the combustion technology employed and (for larger facilities) the type of emission abatement.
Source: www.naei.org.uk
