Carrier Corporation (Farmington, CT) recently announced a new technology that it says will set a new benchmark for chiller energy efficiency. During a press and government briefing at the Earth Technologies Forum and Exhibition, Carrier unveiled “Evergreen VSS,” a new technology that combines HFC-134a non-ozone depleting refrigerant and a high efficiency Variable Speed Screw (VSS) compressor-based chiller system.

Carrier’s new technology incorporates innovations in screw compressor design, advanced materials and manufacturing processes, bearing and lubrication systems, sound and vibration prediction and reduction, advanced variable frequency motor speed control, power factor improvement, harmonic distortion reduction and controls integration. The new technology will be available in the water-cooled chiller market’s largest segment – below 500 tons, the size range that represents 60% of all large water-cooled chiller sales.