Namur General Meeting – A Robust Core Process Control System Is a Platform For Innovation

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Dr. Hans Linnenbrink, who has a real talent for finding opportunities to save energy, cites more examples. Besides the very significant savings potential in chlorine production where oxygen depolarized cathodes can reduce electricity consumption by 30%, it is well worth taking a look at conventional electrical systems. Dr. Linnenbrink recommends keeping an eye on reactive power and power losses in the distribution lines. State-of-the-art transformers can reduce electricity consumption over the long term, and the same applies to twilight switches and LED lighting. Replacing electrical freeze protection heating with temperature control based on outdoor temperatures can also save a lot of energy. Even the elevators at BASF are closely scrutinized. It is well worth the effort. BASF has around 700 elevators and the potential savings amount to 10 GWh a year. More than 10,000 motors are installed at the average chemical park, so variable speed or low energy motors would seem to offer significant potential. Interesting footnote: the much-heralded ecodesign directive does not actually apply to the majority of electric motors which are used in the chemical industry. The reason for this is that three-quarters of these motors are “increased safety” Ex e versions, and safety has priority over energy efficiency. This did not deter Namur from taking a pragmatic approach (NA 122) to finding the right balance between safety and energy efficiency.

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