Re: Re: Cooling an understairs cupboard...Node 0!

[Kim Wall <kim@xxxxxxxxxxxxxxxxxx>]

noel_pilot wrote:
> Hmmm hadn't thought of that one, i'm in a relatively new build house,
> tongue and groove chipboard on the floor not sure whats beneath that.
> cupboard is a long way from an external wall so extracting to outside
> will be very difficult!

A couple of thoughts:

- Instead of ducting the warm air outside, could you route it to a
generally cold-ish room (hallway perhaps?).  Given the British weather,
you might as well make use of the heat you're paying for already...

- I'm renting, so don't have a 'node 0' as such - just a free-standing
19" rack with two servers, a router, ethernet switch, $ky box and a
noisy bastard of a UPS in it.  After limited success with bathroom
extractor fans in my previous house[1], I've got all the rack doors
closed, with two pairs of 120mm muffin fans top and bottom to keep the
air moving.  They're 12V fans, as you can get for about a quid each from
ebuyer (no concerns about reliability - at that price you can maintain a
supply of spares and replace them when they get knackered), and I'm
powering them from an unregulated 9V wall-wart (not sure exactly what
voltage they're getting, but it's a bit lower than the rated 12) to keep
them nice and quiet.  This provides more than enough airflow, with the
air at the front of the rack (where all the intakes are) at
floor-level[2] room temperature.


Kim.
--

[1] Where I had the rack doorless in a walk-in cupboard which
conveniently had the loft hatch in the ceiling - I replaced the hatch
with a piece of chipboard with a bathroom extractor fan in it, to blow
the hot air into the roof space.  It moved the heat well enough, but was
very loud, and died after about 12 months.

[2] In this room, generally about 2C cooler than at eye-level, according
to my measurements.