Re: [Stoves] Grass Gasification

Sun, 25 Aug 2013 16:00:11 -0700

‎Dear Alex

The burn cycle ‎was such that the gasification of the volatiles commences first and with the correct primary air it has characteristics consistent with  that. 

The later fire starts to consume more char and at the end it is primarily carbon. I expect that the reason why I think it is CO and not hydrocarbons is because if it was mostly HC it would have a largely yellow or orange glow. The HC species would create a series of complex particles rapidly, one after another until it was consumed. 

I think the blue is C > CO2 or CO > CO2 hence the blue photon. No particles involved, right?

Regards
Crispin in sunny Ontario

Sent from Q10
From: Alex English
Sent: Sunday, August 25, 2013 11:09
To: Discussion of biomass cooking stoves
Reply To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Grass Gasification

Crispin,
You are most likely correct that CO is burning in the blue flame, but how can you know that other hydrocarbons are not?

Alex

On 24/08/2013 4:27 PM, Crispin Pemberton-Pigott wrote:

Dear Paul

 

>Very important info you gave about difficulties when the grasses are simply packed in (not in bundles of vertical stems).

This is a photo of switchgrass (pellets) burning in an ND TLUD. The blue flame is CO burning. I have a video if you are interested.

 

Regards

Crispin

 


 



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