clearview have <25% on their website.
think it was November when I posted this up from the FC renewables or whatever his title was:
I am certainly aware that most combustion equipment prefers the fuel not to be bone dry. In the case of wood chip boilers they will be commissioned for a specific range of moisture content, and log stoves too are designed to operate optimally at a specific range of moisture content, typically 15-25% (wet basis) as this is the value that dried wood will tend to stabilize at if stored outdoors, under cover in the British climate, even if it’s initially kiln dried lower. Lower MC woodfuel can be burned perfectly well, and very efficiently, as is the case with wood pellets that are typically <10% MC, however that’s because the boiler/stove is designed and optimized for this range. I haven’t seen the specific EPA report you mention, but it is likely that a stove designed for 15-25% will not work as well at lower values. I’d be interested to see their specific concerns. In the case of woodchip boilers, if the fuel is too dry it can lead to higher levels of NOx emissions as a result of the combustion temperature being too high
I am certainly aware that most combustion equipment prefers the fuel not to be bone dry. In the case of wood chip boilers they will be commissioned for a specific range of moisture content, and log stoves too are designed to operate optimally at a specific range of moisture content, typically 15-25% (wet basis) as this is the value that dried wood will tend to stabilize at if stored outdoors, under cover in the British climate, even if it’s initially kiln dried lower. Lower MC woodfuel can be burned perfectly well, and very efficiently, as is the case with wood pellets that are typically <10% MC, however that’s because the boiler/stove is designed and optimized for this range. I haven’t seen the specific EPA report you mention, but it is likely that a stove designed for 15-25% will not work as well at lower values. I’d be interested to see their specific concerns. In the case of woodchip boilers, if the fuel is too dry it can lead to higher levels of NOx emissions as a result of the combustion temperature being too high