Re: Computer room cooling

@ Roberto re: "don't ask me to figure out the °F"

Type this in Google: convert 20 degrees celsius to fahrenheit

68°F is the answer.

@ Rob re: Thermometer at Harbor Freight

I think I'll pick one up this weekend. Besides data center measurements I
can use it around the house to spot areas where the cold is seeping in the
house.



On Thu, Jan 30, 2014 at 8:31 AM, Roberto José Etcheverry Romero <
yggdrasil.raiker@xxxxxxxxx> wrote:

I had a small fight on this issue with both the buyer and the AC guy (no HV
AC here, standard home AC's....). I wanted to mimick the cold/hot aisle as
much as possible even going as fas a isolating the cold from the hot and
ducting the racks but i got overruled. At least both the network/telephone
and the 220V lines are mine to specify. (and the room is now a cozy
20°C/293,3K, don't ask me to figure out the °F)
When a breaker up the chain trips it feels like a bad set up, for the
main/group to trip it must be underrated OR they installed more load with
overrated breakers under it...
We're having the utility provider come and upgrade the inputs, since we
were overheating the mains (damm summer, ACs consume a whole lot).
My new UPS setup will be isolated from the rest of the company, one big fat
4x25mm2 cable just for me and my 2x 10kVA UPS
Got a cheapo laser thermometer from china and it works wonders for finding
the hotspots

Hope you can get it fixed.



On Thu, Jan 30, 2014 at 11:15 AM, <rob@xxxxxxxxx> wrote:

Man, one of those laser temperature guns like below:

http://www.harborfreight.com/non-contact-infrared-thermometer-with-laser-targeting-69465-8905.html

Really shows you where your computer room hot spots are.

I really think it would be more efficient if we ducted our racks.

I should probably also be concerned that the breaker boxes on the loading
dock shows a few breakers well over 80o when the ambient temperature
surrounding them is under 60o.
These breakers control HVAC units on the roof. Another concern about
these is that when they blow they don't blow their individual breaker.
They blow the breaker which feeds their breaker box. Which also happens
to feed our computer room UPS. See my concern?
This breaker is a special one you will never see in a home application.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

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