[Gasification] forced air for TLUDs
Tom Reed
tombreed2010 at gmail.com
Sun May 12 12:23:26 CDT 2013
Dear Robert
An excellent question below, and some good reasons for forced draft TLUDS.
Certainly TLUDS can work usefully without electric power.
However, the flame from a natural draft TLUD is tall and skinny and so you have incomplete combustion, quenched when a pot an inch or two away from the stove top (since hot gases naturally rise). Result: you need more fuel and get soot bottomed pots.
The battery allows you to have a horizontal disk of completely burned fuel.
similar to the disc of heat created by a premixed gas stove.
So, at present, the 1.5 V battery makes a much cleaner and more efficient stove.
Good question, and I hope a good answer.
Tom Reed
Thomas B Reed
280 Hardwick Rd
Barre, MA 01005
508 353 7841
On May 12, 2013, at 7:05 AM, Robert Fairchild <solarbobky at yahoo.com> wrote:
>
> Why might we want forced air for a TLUD?
>
>
>
> For primary air:
>
> Higher power output (than natural draft)
>
> Adequate power with tight packing fuels ( pellets, rice hulls, …)
>
>
>
> For secondary air:
>
> Higher power output (with forced primary air)
>
> Improve cleanliness of combustion through better turbulence/mixing/air quantity
>
> Reduce flame height to ensure more complete combustion, less soot/black carbon
>
>
>
> Anything I've missed?
>
>
>
> Thanks,
>
> Bob
>
>
>
> I am still thinking about venturis and enhanced natural draft secondary air flow.
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