Why inverters are a must for server room air
With server room air conditioning
will run 24 hours / 7 days a week and the power that can be used
when servers are being used to their full capacity. With the old
fixed speed systems the inductive load spikes and high current
draw meant in badly constructed server rooms they could actually
cause issues with the servers they are there to cool.
After a recent installation of a
replacement server room air conditioning system which was being
run from a UPS system in case of power outages, we found that
the savings from having inverter systems was phenomenal. The
original systems were R22 and R407C refrigerant units and used
on average 36% of the 100Kva UPS system or 36A running. The new
inverter air conditioning systems when maintaining temperature
at the same ambient only populated 16% of the server rooms UPS
system. That meant it was drawing 16A in comparison to 36A with
the old systems in the same weather conditions. A saving of 44%
on the companies energy bill.
Breaking this down to cost, in the
UK we pay £0.11p per kw/h for electricity. The original systems
at current electricity costs were costing £22.70 / day. The new
air conditioning system cost on average £10.13 / day to run.
Over the year the inverter air conditioning has saved the client
With a server room air conditioning
systems having a life span of 5 to 15 years (depending on
equipment) if you want to save a lot of electricity make
inverter air conditioning your priority.
Key points to think about when getting air
conditioning for server rooms
Use inverter air
conditioning as it will save energy in the long run.
conditioning units do not work in cold weather because they do
not have a outside fan speed controller (low ambient kit)
Use a established
brand so if a part fails on you Server room air conditioning you
are not waiting 8 weeks for a part.
Sometimes it is
worth having two server room air conditioning units because if
one fails you still have some cooling.
To establish the
heat load of you servers add up all the power supplies of your
servers rack and assume a 40% loss to heat. i.e- If you have 10
servers with 400watt power supply the total watts will be 4000
watts. assuming a 40% loss the heat load will be 1600 watts.
Work on a average
watts per/Msq of 125watts, so if you server room is 5 x 5 meters
you will require a base of 3.5kw/12000btu + the heat load.
for server room air conditioning Mitsubishi, Daikin, Fujitsu,
Always use auto-restart units for
server room air conditioning units as power failures can shut
budget air conditioning down.
If your server room
is temporary (ie short term lease on building) or has building
portable air conditioning maybe your only
If using portable
air conditioning for your server room then make sure it recycles
the water for better cooling performance of that it has a
integral condensate pump.
Use a established
business who will not be going out of business for your server
room air conditioning installation as the warranty of the air
conditioning is with the supplier not the manufacturer.
We offer a complete service to IT
Managers, Building Managers and Server Room / Computer / COMS room managers.
Call us for a comprehensive quotation
on varied air conditioning manufactures to suit any budget on
new installations. We have worked with many Blue-chip
organisations in helping them develop their server room air
+44(0)845 567 7080 for details on server room air