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formIng conSIStency monItorIng world pulppaper64 In several case studies the potential energy saving obtained through vacuum reduction has been around 500 KWh which equates to approximately 4000000 KWh per year Dewatering distribution on each single ply ensures better quality and more accurate and therefore lower energy consumption. Ideal conditions at the bonding stage leads to better fibre cohesion and distribution. The use of excessive vacuum at low consistency range from 15 to 5 is very common in many cases this leads to sheet sealing. A fast dewatering in the low vacuum area results in poor dewatering efficiency in many cases at the suction boxes. ply bondIng enhancement on a teSt lIner machIne The test focused upon the dewatering of all ply. The reference sensor was located just before the bonding on each ply and before the suction roll. The vacuum reduction was gradually reduced in all ply except at low vacuum of filler ply. One of the targets during the vacuum reductions was to keep the consistency before couch roll stable in figure 4. Quality enhancement and energy saving addition stable steam consumption provided further evidence in support of this as a success. reduced conSIStency at bondIng on fIller and bottom ply Thanks to the consistency sensor on the filler ply operators can set the proper vacuum on the top former in order to achieve the best board quality Fig.4. The sensor installed at couch roll controlled the global dewatering performance of the forming section. concluSIon When placed in strategic positions the FiberScanFix sensors allow the dewatering to be distributed in a better way and to define the best operative points for each vacuum element. In several case studies the potential energy saving obtained through vacuum reduction has been around 500 KWh which equates to approximately 4000000 KWh per year. Given the average electricity price in Europe this represents a saving of well over 380.000 . The ROI for the complete sensor system payback was in each case study only few months. The impressive results are even more important when considering the reduction of Green House Gases GHG. 4000000 KWhy equates to a reduction of 1.716 GHG tyear. Or to put this another way this is the equivalent GHG emission produced by 233 people in one year Proven and repeated tests performed across Europe Australia North America have shown that very significant results in paper quality and energy consumption can be obtained in the vast majority of the cases. In a paper world constantly evolving at a fast rate this technology is a new starting point for better papermaking whilst enjoying lower production costs.