Andrew,
I guess I would differ by suggesting that the air wash is primary air.
At low burn rates it, being cooler drops to the base of the fire box
where it reacts with the fuel at the front. At high burn rates it
entrains some flames down with it and could be described in part as
secondary air, although poorly mixed, yet driving some flame and exhaust
gas recirculation.
Alex
On 1/9/2011 9:40 AM, [email protected] wrote:
In the glass doored variety a portion of the secondary air is jetted down
over the glass as an air wash, to keep combustion products away from the
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