[Stoves] Adjustable Primary Air

[A J]

Here is a video I made of a TLUD Natural Draft stove that has adjustable Secondary Air.  This stove is burning wood pellets.

      The long wavy flames have as much secondary air turned off as possible.  The tight blue flames are the result of almost maximum secondary air pre-mixed into the wood gas.  During the video I am adjusting the air flow up and down to show the results of different air/fuel ratios.

I believe these kinds of flames are only possible with very good pre mixing, which until now has been very difficult to control and keep lit.

https://youtu.be/yKPfAlPXCMY

Anyway, I thought someone around here might be interested in these results.

Feel free to Email me at awingle at hotmail.com

Thank you for your time,

Aaron Wingle





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Today's Topics:

   1. Re: stove selection (Rogerio carneiro de miranda)


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Message: 1
Date: Fri, 26 Nov 2021 11:59:20 -0300
From: Rogerio carneiro de miranda <carneirodemiranda at gmail.com>
To: Discussion of biomass cooking stoves
        <stoves at lists.bioenergylists.org>
Subject: Re: [Stoves] stove selection
Message-ID:
        <CADB_T=i5yF00WpWB=qsSu_j3HL_ZHp5DuSbiswt+L+N_wH3=Xw at mail.gmail.com>
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Dear Paul:

In my view, the following aspects comes to mind when selecting a stove for
a particular project:

Cultural aspects:  what type of cooking is done: frying, cooking, oven
baking or baking over a griddle?   The ergonomics of the cooking:  at table
level or ground level?

Socio economics: will the community pay for the stove, partial pay or no
payment at all?  My experience is that when people do not pay anything, the
care of the stove is more likely neglected, versus when there is some
cost-sharing the beneficiary does take better care of the stove.   We have
had cases where we had to reinforce our casted concrete stoves against
border breakage with a metal border, due to poor care by extremely poor
beneficiaries.

Geography:  Is the weather cold (indoor cooking) or hot  (outdoor cooking),
and the ventilation patterns?  Stove with lateral heat loss may be
interesting for space heating, and for outdoors cooking a chimney may not
be necessary.....

Fuel availability:  Will there be plenty of fuel available and at what
cost?  What type of fuel does the stove need?  Some stoves, for instance,
may need very small firewood sticks, and perhaps beneficiaries may be
resistant to spending time splitting the wood. There  are cases that
beneficiaries modified the stove fuel entrance, for larger firewood, which
changed the stove performance.

Stove assembly:  An off the shelf stove will be easier, faster and cheaper
to install? or a localy built stove that may require a stove master to set
it up?

Just some quick thoughts about it....

Rog?rio


Em qua., 17 de nov. de 2021 ?s 12:32, Paul Arveson <paularveson at gmail.com>
escreveu:

> Colleagues:
> I would like to know if any of you have prepared a document to guide
> project planners in selecting an appropriate stove for a particular
> location.  What site and user considerations are important?
>
>
>
> Thank you,
>
> Paul Arveson
>
>
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