CABA Information Series

IS-2008-126: Energy Implications of Economizer Use in California Data Centers

This paper from the University of California explores methods for cooling data centers.  Two techniques are compared: a water-side economizer that uses an air-conditioning compressor, and air-side economizer that blows in outside air and does not cool it if it is cooler than the building interior.  The air-side economizer is lower cost, but may introduce air pollution that could affect the computers.  Data centers were modeled in various locations in California.  In all cases air-side economizers offered savings.  For example, in San Jose, the saving was $130,000 per year.  The cooler the outside air, the larger the savings.  Also, savings are possible by accommodating a wider range of humidity.






















(Adobe PDF File)