Free cooling has become firmly established as a highly effective way to reduce the energy consumed by chillers through the use of outside air or water.

When the National Center for Atmospheric Research (NCAR) decided to build a new supercomputing center, it wanted to take advantage of the free cooling available by the high, dry Wyoming environment.

For the university, avoiding freeze damage to the cooling tower was the No. 1 priority, but there were other benefits as well.

Carrier's AquaEdge 19DV Water-Cooled Chiller features low-speed, direct drive, back-to-back EquiDrive™ compressor technology.

Daikin introduced an integrated water-side economizer (WSE) for its Pathfinder Air-cooled Screw Chiller.