South Korean tyre manufacturer achieves energy cost savings with Riventa pump system

In the port city of Yeosu in South Korea, a global tyre manufacturer has been able to achieve an annual energy reduction of 13% at its water pumping plant following the installation of a Riventa pump system.

For a pressurised system that circulates cooling water for synthetic rubber processing, Riventa utilised its FREEFLOW technology and Green Pump Index (GPX) benchmarking system to simultaneously monitor five pumps. For 150 hours, system pressure was measured, together with flow rate and head combinations to pinpoint how effectively the pumps could meet the varying demands of the system.

Included in the tyre manufacturer’s objectives was the need to address pressure objectives for the system, which were operation at 4.5kg/cm2, compared to the contractual minimum supply pressure of 3.8kg/cm2. Although the five pumps had the same casing, Riventa found that by trimming the diameter of three pumps by 3.5%, an 11% reduction in pressure would be achieved.

By understanding the operation of the system and how the pumps interact with it, Riventa was also able to calculate optimum performance and make potential GPX recommendations. For instance, the GPX index was improved from 54 to 64 after Riventa’s modifications. So, for example, of the 100% of electrical power consumed by the motor, just 54% of that power was being successfully converted into net hydraulic output power.