How to use server room air conditioning
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Why inverters are a must for server room air conditioning

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 4585.50.

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.

 

  server room air conditioning unit with controller

server room outdoor air conditioning unit installed outside of building with basic cage system

 

 
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.
  • Cheap air 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.
  • Advised manufactures for server room air conditioning Mitsubishi, Daikin, Fujitsu, Sanyo.
  • 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 restrictions then portable air conditioning maybe your only option.
  • 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 conditioning.

 
Call: +44(0)845 567 7080  for details on server room air conditioning quotations.

 

E-mail: info@orionair.co.uk

 

 

Orion Air Conditioning & Refrigeration Ltd, 10 Grisedale Court, Woburn Road Industrial Estate, Kempston, Bedfordshire, MK42 7EE, UK

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                               Last updated - 19/10/2016