Full-scale proof of Waertsilae Energopac

摘要

Waertsilae's energopac integrated propeller and rudder design effectively reduces flow separation behind the propeller hub, thereby reducing frictional drag while preserving course-keeping capabilities.rnIn recent trials carried out in co-operation with the Spliethoff Group, a company that manages more than 55 multi-purpose cargo vessels, it was shown that the Energopac solution delivers significant reductions in fuel costs. The trials involved eight 17 700dwt vessels, six of which were fitted with standard rudders and two with Energopac. The trials have shown that the Energopac solution saves close to 4% power in design condition, representing annual fuel cost savings of more than US$120 000 (at July 2010 fuel prices).