Submitted by: KONE Aktiengesellschaft
Implemented country: Austria
Title: New green lift technology saves half on energy
A lift in a 5-6 story building often consumes more than 10,000 kWh annually. The innovative lift system EcoDisc saves up to 50% of the energy compared to a conventional system. Significant factors are the avoidance of a machine room and the counterweight as well as increased energy efficiency. Furthermore, this design has a significantly higher lifetime, particularly due to the lower rotational speed of the drive system, and costs 15% less. The drive of this patent by Kone is based on a synchronous motor with permanent magnets; such motors have no gear box and little friction thus requires no oil (in contrast to hydraulic lifts and lifts with gear boxes). Currently 180,000 such systems are in operation worldwide and save 2.3 million tons of CO2 annually.