The 700 ton Magnitude has a oil-less, magnetic-bearing design. By eliminating the high friction losses of conventional centrifugal compressors, the chiller achieves good full and part-load performance, according to the manufacturer. Part-load IPLV for the 700-ton unit is as low as 0.306 kW/ton while maintaining class full-load efficiency of 0.532 kW/ton. The oil-less technology reduces maintenance it does not require conventional bearings and, therefore, an oil management system, and associated maintenance, is not required.
McQuay International, a division
of Daikin Industries Ltd., (800) 432-1342
Magnetic Bearing Centrifugal Chiller
March 14, 2011