[Stoves] Blue Flame -- Natural Draft -- Rice Husk

[Dean Still]

Hi All,

In my limited experience, blue flame is seen in TLUDs when the char starts
to burn. Yellow flame is the hottest but is also associated with the
production of black carbon. Reddish flame seems to be cleaner than yellow
with less CO and PM. I'm thinking that cooling the flame results in less
black carbon.

As far as color goes, a great looking combination is blue at the top of the
TLUD (burning the CO) and orange at the bottom when burning the char. Looks
neat.

Best,

Dean


On Fri, Aug 23, 2013 at 4:46 PM, Marc-Antoine Pare <marcpare0 at gmail.com>wrote:

> Thanks all. As I mentioned, details coming quite soon. I've been
> documenting daily since the start of the project, and plan to keep it up.
>
> Dean, do you have any documentation of the blue flames that are "often"
> seen?
>
> I haven't been able to find a photo or paper on it. Many people *searching
> *for blue flames.
>
> Of course, you get blue flames when you are burning charcoal in a wood
> stove. I saw blue flames both at the beginning and ending phases of the
> runs, so it's not just char burning that's responsible (which is high CO,
> as you mention)
>
> marc
> notwandering.com
>
>
> On Fri, Aug 23, 2013 at 3:54 PM, Dean Still <deankstill at gmail.com> wrote:
>
>> Hi Marc,
>>
>> Blue flame in natural draft stoves is often seen when burning CO. It does
>> not necessarily mean that the flame is very hot or very clean as in forced
>> air stoves.
>>
>> Best,
>>
>> Dean
>>
>>
>> On Thu, Aug 22, 2013 at 8:33 PM, Marc-Antoine Pare <marcpare0 at gmail.com>wrote:
>>
>>> Hi everyone,
>>>
>>> I've managed to repeat blue flames consistently in a rice husk stove
>>> using only natural draft.
>>>
>>> Anyone seen this before? I am only aware of forced air stoves that
>>> achieve blue flames.
>>>
>>> The photo below is just a teaser. The lighting is terrible and you can't
>>> make out the column of blue flame because I'm shooting straight down.
>>>
>>> The smell is also quite motivating. Usually you get acquainted with the
>>> "smell of defeat" with rice husk, since poor combustion smells quite
>>> strong. So far, achieving odor on par with forced air units.
>>>
>>> More soon...
>>> This will be part of a completely Open Source project
>>>
>>> [image: Inline image 1]
>>>
>>> marc
>>> notwandering.com
>>>
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>>
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