Drives floor energy costs for high rise

A 17-storey office complex has dramatically reduced energy costs by using variable speed drive controlled pumps and fans. A London office complex has saved £15,000 on electricity costs in six months following the installation of 18 ABB variable speed drives (VSDs). The drives, ranging from 5.5 kW to 37 kW, are used on hot water and chilled water pumps as well as air extraction systems. The £48,000 project is expected to pay for itself within…