[ale] fried innards -- final report

Vernard Martin vernard at gmail.com
Thu Aug 8 21:13:35 EDT 2013


On 8/8/2013 9:08 PM, Alex Carver wrote:
> I neglected the control data.  With the rack in the room and no 
> exhaust, the room warmed up about 10 degrees. :)
>
Damn Alex, you *still* have those 220Rs running? I'm surprised that you 
haven't replaced it all with a single low power system. At this point, I 
wonder if the power usage on those units cost more than replacement cost :)

> On 8/8/2013 18:05, Alex Carver wrote:
>> I'd rather have the cold air blowing on me instead of the machines. :)
>>
>> But the exhaust system worked pretty well during a limited test.  I have
>> four 220R's in a rack.  In one apartment I was in, the rack was in a
>> small bedroom.  The top of the rack had a fan bank.  That was covered
>> with a box and a 4-inch duct sent out the window to a booster fan
>> outside.  The room didn't warm up much more than it already was (maybe
>> an extra degree or two) and the extra power consumed was about 5 watts
>> (for the booster fan).  The rack eventually moved into a garage where I
>> didn't have to worry about heat but I had been building up the hardware
>> for the rest of the machines to exhaust all of them to the outside (or
>> attic).
>>
>> On 8/8/2013 15:23, Jim Kinney wrote:
>>> AH! You need to rethink the "fan as case" model and go straight to the
>>> "AC
>>> duct as case" model.
>>>
>>> Take a 15k BTU window unit. Add some sheet metal to the cold air
>>> output to
>>> run it right over all the cpus you have. Add a second bit of sheet
>>> metal to
>>> join the big front AC return to the hot side of the PC/ductwork 
>>> monolith.
>>>
>>> With some decent measuring and placement of ribs, you can mount 8-12
>>> motherboards in a decent size chunk of rigid duct. Add some cutout to
>>> place
>>> the back panel shield and some fancy power supply work and you've got
>>> your
>>> own cluster!
>>>
>>> Then the spouse finds out what's making all the noise...
>>>
>>>
>>> On Thu, Aug 8, 2013 at 4:51 PM, Alex Carver
>>> <agcarver+ale at acarver.net>wrote:
>>>
>>>> On 8/8/2013 13:37, Jim Kinney wrote:
>>>>
>>>>> computer cases are made of fans and cable ties :-)
>>>>>
>>>>
>>>> Ohhhhh!  Then I have tons of those. :)
>>>>
>>>> I gave up on cases once I decided I'd be using 100-200mm fans for
>>>> cooling
>>>> to keep noise under control.  :)  Next step is a central exhaust
>>>> system for
>>>> the heat.  I'm close, already have all the fans and ductwork, just
>>>> need to
>>>> piece it together.
>>>>
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>>>>
>>>
>>>
>>>
>>>
>>>
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>>
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>
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