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Re: which fuel requires more excess air


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Posted by gburns on January 21, 2002 at 13:38:43:

In Reply to: Re: which fuel requires more excess air posted by Harold Kestenholz - hydronic.net on January 18, 2002 at 15:48:04:

Typically coal requires more excess air (15-20%) while oil can be anywhere from (10-15%). This of course depends on the type and condition of your burner equipment

: 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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