Magnetic Bearing Centrifugal Chiller Development

This effort has demonstrated a unique, patented, high-efficiency, lubricant-free 120-ton centrifugal chiller that uses patented, dual 24,000 rpm magnetic-bearing supported centrifugal compressors. This program has demonstrated the world's first magnetic bearing chiller and represents significant technology advances in the areas of dynamic control, high-speed rotating machinery and magnetic bearings. This technology results in substantial improvements in efficiency and the dramatic savings in both operating and maintenance costs.

This effort has incorporated other unique features, such as variable speed control to provide load following, environmentally safe non-toxic HFC refrigerant to improve performance, and integrated electronic diagnostics to provide condition monitoring and predictive maintenance capabilities.