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Posted by Harold Kestenholz - hydronic.net on January 18, 2002 at 15:48:04:
In Reply to: which fuel requires more excess air posted by Tom M on January 18, 2002 at 10:28:44:
While it would ordinarily bring a response that pulverized coal requires more excess air on older technology boilers, the answer can depend upon the type of burning. A fluidized bed or blown coal can make different characteristics. At times, 6 oil burners are used as preliminary ignition for coal combustion.
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