[PLUG-TALK] Another use for 12 volt fans?

[Denis Heidtmann]

I wonder what flow the chimney effect could produce.  Is it much less than
the fans, esp. if you can make the chimney tall?  And I assume you will
have a thermostat controlling the fans.

-Denis

On Wed, Sep 20, 2017 at 10:08 PM, John Jason Jordan <johnxj at gmx.com> wrote:

> I have a gas log fireplace that is sufficient to heat my entire house.
> However, the fireplace is in an unfinished part of the house (soon to
> be finished) where the vent duct is still exposed. This duct gets
> pretty hot. In the remodeling/finishing about to take place I am going
> to wrap and attach to the vent some wire mesh to facilitate better heat
> transfer. But ultimately the vent will be enclosed, which means that I
> need a vent at the bottom and another at the top of the enclosure for
> air to circulate over the duct and mesh. My plan is to add ordinary
> grilles at the top and bottom and computer-type fans to enable air
> flow.
>
> This means that I need computer fans and a very small computer power
> supply (for the 12v needed by the fans. Noise is a big factor here.
>
> 1) I asked my friend Mr. Google about sound levels for computer fans
> and came up with Noctua as offering the quietest fans. Does anyone have
> experience with the Noctua fans or alternatives?
>
> 2) What about power supplies? I don't need a lot of current for my
> plans. Are there very small power supplies (preferably without fans)
> that would provide enough current for half a dozen four inch fans?
>
> 3) Does anyone think I am crazy?
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