The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) develops and publishes thermal and humidity guidelines for data centers. The latest edition outlines the temperatures and humidity levels at which you can reliably operate a data center based on the equipment classification.
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In the most recent guidelines, ASHRAE recommends that IT equipment be used with the following:
– Temperatures between 18 and 27 degrees C or 64 and 81 degrees F;
– dew point -9 degrees C to 15 degrees C; and
– relative humidity of 60%
How to calculate data center cooling requirements
General calculation you can start with to get a baseline British thermal unit (BTU) cooling size:
(Room square footage x 20) + (IT equipment watt usage x 3.14) + (Active people in the room x 400)
To Convert BTU/hour in watts, multiply by 0.293
To Convert Watts into BTU/hour, multiply by 3.41
To Convert Tons into watts, multiply by 3530
To convert Watts into Tons, multiply by 0.000283
How to calculate data center cooling requirements
For more information, do take a look at How to calculate data center cooling requirements