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Coal combustion- Moisture %

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Old   September 5, 2007, 13:03
Default Coal combustion- Moisture %
  #1
Michael
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Hello I'm currently trying to do coal combustion. I read the manual/tutorials about how to input coal properties. All of these shows you how to input fuel assumming certain % volatiles, % char, % ash. What if your proximate analysis contains moisture level. How would you input the coal's percentage of moisture in fluent

Thank you in advance
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Old   September 7, 2007, 18:15
Default Re: Coal combustion- Moisture %
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Allan Walsh
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Have you tried the "wet combustion" panel in the injection set-up?
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Old   September 10, 2007, 04:39
Default Re: Coal combustion- Moisture %
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IgorB
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Hi!

I'm having similar problem here. I'm trying to simulate biomass combustion with high moisture content using two mixture fraction (volatiles and char). The question is should I include liquid water H2O(l) in the same stream with char? Fuel stream (volatiles) are given empiricaly so water cannot be added there. "Wet combustion" tab is greyed for some reason.
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Old   September 10, 2007, 13:49
Default Re: Coal combustion- Moisture %
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Allan Walsh
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Igor - check out some of the previous discussion on biomass combustion.
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Old   September 11, 2007, 03:56
Default Re: Coal combustion- Moisture %
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IgorB
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I did that but I could not find the reason why "wet combustion" tab is greyed in Fluent (is it maybe usable only for species transport model?). I tried to include moisture by adding H2O(vapor) in char steam and correcting latent heat in materials panel but i'm not sure if it is correct way. I don't exactly know what laws are included for volatile stream and char stream respectively when using two mixture fraction. I would appriciate any help i can get. Thanks in advance, Igor B.
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