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gvallios Member Join Date: Aug 2008 Location: Athens Posts: 9	Ash Heat Content 08/26/2008 8:14 AM
	Can somebody advise what is the enthalpy of biomass (ie. pellets) ash (kJ/kg) provided by biomass combustion? Or to refer to citations. It is needed for combustion calculations
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Ash Heat Content 08/26/2008 11:08 AM
	The enthalpy will vary with the composition and source of the biomass. Dry softwood chips will have a different figure to mashed swede, for example. Consider doing process trials to determine this information. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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gvallios Member Join Date: Aug 2008 Location: Athens Posts: 9	#2 In reply to #1 Re: Ash Heat Content 08/26/2008 11:18 AM
	Thanks PWSlack, Is it possible to advise for a range. To some calculations have been used as average DH=6700kJ/kg, taken by a written source but justification is needed. Therefore an indication of enthalpy ranges should be very helpful.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 In reply to #2 Re: Ash Heat Content 08/26/2008 11:22 AM
	Please state the temperature of the ash. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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gvallios Member Join Date: Aug 2008 Location: Athens Posts: 9	#4 In reply to #3 Re: Ash Heat Content 08/26/2008 11:33 AM
	The ash temperature during combustion is T=1.390oC. Is there any calculation method - equation. Please state.
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gvallios Member Join Date: Aug 2008 Location: Athens Posts: 9	#6 In reply to #3 Re: Ash Heat Content 08/27/2008 9:39 AM
	Dear PWSlack, Any guidance or instructions for further search?
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Ried Guru Join Date: Dec 2005 Posts: 1602 Good Answers: 19	#5 In reply to #1 Re: Ash Heat Content 08/27/2008 9:16 AM
	Perhaps no trees were harmed in your post, but as an individual with a Scandinavian heritage, I must take great offense at your comment about "mashed swede"! I dare say if the "Flying Circus" were still about, they would pick up on this complaint and then where would you be??? __________________ Eventually, one needs to realize that it is far less important to be the smartest person in the room than it is to sit next to that person and make friends.
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Users who posted comments:

gvallios (3); PWSlack (2); Ried (1)

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