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VARIABLE SPEED DRIVE TECHNOLOGY ENABLES ENERGY SAVINGS

In a previous issue of Our World magazine, which included a feature on Innovation in the Group, the Variable Speed Drive technology installed on the cooling tower system at AEL's Nitric Acid plant was featured. Implementation of this BIGGER Idea led to lower energy use on the fans at night and in winter because less air is now required to cool the plant.

110 kilowatts of power savings over 8 560 operational hours were realised, which is 941 600 kilowatt hours per year. The energy saved equates to R856 000 and a payback period of 1,3 years for the project, which cost R1,1 million.

The long-term advantages include: