[Stoves] Powering a TLUD Fan

Phil Hughes nicafyl at gmail.com
Thu Aug 30 15:17:14 CDT 2012


A first stab would be to use an LM3224. It is way overkill as far as
current capacity

On Thu, Aug 30, 2012 at 12:25 PM, Crispin Pemberton-Pigott <
crispinpigott at gmail.com> wrote:

> Dear Phil
>
>
>
> That was valuable info. The problem is not so much the volume of air
> needed, it is the pressure required to force some air through the fuel to
> maintain a pyrolysing bed.
>
>
>
> If you could stack fans running at a lower speed, it might give you the
> pressure. You sometimes see that on high end computer cases. The fans
> already have holes to allow this, it is so common.
>
>
>
> But it is probably better to use a lower voltage fan that is running at
> the right tip speed for its blade density.
>
>
>
> During an earlier discussion on fans a few years ago we pointed out that a
> squirrel cage fan is better for stoves because it so easily provides the
> pressure needed.
>
>
>
> Do you have access to a DC-DC inverter chip to get the voltage up to 5?
>
>
>
> Regards
>
> Crispin
>
>
>
>
>
> Amazing as it may seem, this off-grid Nicaraguan resident has some of
> those fans. So, I just gave one a test run.
>
> It starts rotating at 3.22V but the speed is very slow at anything less
> than 4V. Even at 4V I would guess 25% or less of the air flow that you get
> at 5V. So, it is possible to use one but not directly from a single LiIon
> cell.
>
> On Thu, Aug 30, 2012 at 9:42 AM, Phil Hughes <nicafyl at gmail.com> wrote:
>
>
>
>
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>


-- 
Phil Hughes
nicafyl at gmail.com
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