Wave Pump System by a Combination of Centrifugal Pump with Impulse Turbine for Wave Energy Conversion

In this study, a pump system using wave energy was developed for generating power of pumping the seawater, which can be used for the preservation of farming conditions of marine products and the replacement of seawater by pumping of the deep water. A radial pump that can be operated by an impulse turbine for wave energy conversion was developed, and the performance of this pump system was investigated experimentally. The thick-blade impulse turbine used so far was changed to a thin-blade impulse turbine. The torque decreased slightly, but the same tendency was confirmed for the thin-blade impulse turbine. In the closed flow path, the head decreased and the flow rate increased, but the pump efficiency decreased due to the influence of the pipe flow resistance.