b'ENERGY EFFICIENCIESCASE STUDY 1 have been reached and sealing and Lee&Man Tissue TM9, 10, 11 & 12cooling water consumption fully are new double-width tissue machinesstopped. installed in the Guangdong site in southern China. All machines areRuntech Systems Ltd. is a Finnish-equipped with two EP500-D1 turbosbased company, today a part of to fulfil the capacity and enableGardner Denver. With years of hands-controllability. Installed power in allon papermaking know-how, Runtech cases is 1000 kW, however with thedevelops, designs and supplies help of EcoFlow dewatering equipmentequipment and related services Table 2. Energy consumption targets are achieved at allfor paper, tissue and pulp mills. the machines have been optimized tofour Lee&Man tissue machines. run with only one unit during normalHundreds of delivered systems, such operation with an energy consumption ofThe new system was rebuilt with two EPas dewatering meters, vacuum systems, between 300-350 kW.blowers namely EP550-T1 and EP600- tail threading equipment and doctoring HF1. solutions benefit our customers by All energy consumption targets haveenabling both energy-efficient and been fulfilled and the efficiency has beenAfter start-up, the turbo operation waseconomical production. Our integrated increased even further with an exhaustoptimized with the help of EcoFlowsolutions can result in significant air heat recovery system. In addition,dewatering equipment enabling aoperational cost savings, improved turbo systems are naturally runningreduction in energy consumption of upmachine runnability and product without any sealing or cooling water.to 900 kWduring normal operation.quality, giving a competitive edge for our Naturally, all energy efficiency targetscustomers in the market. Lee&Man Tissue TM3 was a vacuum system rebuild project for a double width tissue machine at the Ruichang site in central China. The existing system consisted of three liquid ring pumps consuming around 800 kW in total. The new system was rebuilt with one EP550-T1 turbo unit replacing all the pumps. Table 3. Replacing liquid ring pumps resulted in 50% energy savings.After start-up the turbo operation was optimized with the help of EcoFlow dewatering equipment enabling a 50% reduction of energy consumption during normal operation. Naturally, all energy efficiency targets have been reached and sealing and cooling water consumption fully stopped. CASE STUDY 2 Confidental Tissue machine TM11 is a double width tissue machine in Europe. A vacuum system rebuild project was installed to improve energy efficiency and improve profitability. The old vacuum system consisted of five liquid ring pumps consuming 1300 kW in total.Table 4. Results before and after the rebuild. 32 TISSUE TECHNOLOGY INTERNATIONAL'