Although this pharmaceutical company had capacitor banks installed at the transformer to correct the power factor, those banks were noted not to function properly as the power factor was highly fluctuating. Installation of an automatic regulator, together with the installation of two fixed batteries supported in maintaining the power factor, and thus increased the bonus on the bill.
This practice illustrates that through proper information system, energy consumption can be reduced with up to 3% provided that the data is properly analysed and corrective actions are considered accordingly.
Through mapping the compressed air supply and demand, it was noted that the pressure setting of the compressors was not optimised, and that the compressors are set to operate simultaneously. Replacing one of the compressors with a variable speed drive compressor, together with the installation of a sequencer controller, enabled the company to reduce the pressure setting, and to save on energy.