Paper manufacturer saves £20, 000
August 1st 2007

Variable speed drives from ABB are helping paper manufacturer James Cropper save around £20,000 a year..

The energy-saving project has achieved a payback of a year and reduced the number of pumps needed to meet the required duty from two to just one.As well as providing variable speed to match the changing demand, the drives have enabled improved flow through the pipelines and reduced standby pressure.

The drives have boosted efficiency in three ways. First, they automatically vary the speed of the pump motors to match the changing demand for water.

Second, they have enabled the removal of the old control valves from the pipework, eliminating the previous flow restrictions and finally James Cropper can now reduce the standby pressure in the water system when there is no demand from the mill.