[Beowulf] Google greywater cooling

Bob Drzyzgula bob at drzyzgula.org
Wed Mar 21 22:52:09 EDT 2012


And it certainly is not the case that greywater would be used as a
potable -- or breathable -- source of water or humidity. To obtain
greywater in the quantities useful for data center cooling, it
typically has to come from the local public water company, and
generally requires a local ordinance allowing its use. Moreover, such
ordinances will specify exactly what the water can be used for, and
plumbing codes will ensure that the greywater will be kept separate
from the potable water, much as are waste and storm water.

--Bob

On Wed, Mar 21, 2012 at 10:17 PM, Mike Davis <jmdavis1 at vcu.edu> wrote:
> Greywater isn't sewage, though it is often dealt with in the same way.
> Greywater could be from sinks, plant watering systems, condensation,
> etc. It could also be recaptured and reused fresh water from some
> cooling systems.
>
>
> On 3/21/2012 8:45 PM, Ellis H. Wilson III wrote:
>> On 03/21/2012 10:11 AM, Hearns, John wrote:
>>> Flagging up yet another Register article I’m afraid, but it is interesting
>>>
>>> http://www.theregister.co.uk/2012/03/20/google_greywater_data_center_cooling/
>> Certainly interesting.  I missed this one in my El Reg RSS.  Does anyone
>> have references on a (modern) picture of what their servers look like?
>> In other words, they are particularly vague in the article and the
>> associated video on how they actually use this water to do the cooling.
>>    I assume it is not "real" water cooling, but utilizing that water in
>> their air conditioning units somehow.  I cannot imagine they use the
>> water to re-humidify their server rooms, since rooms smelling of piss
>> and chlorine probably isn't appreciated by any but the most green of
>> environmentalists.
>>
>> Best,
>>
>> ellis
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