新方式振動水柱型波力発電システムの提案

概要

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This paper proposes the wave power generation system of new OWC (Oscillating Water Column) type. The weaknesses of the previous OWC system are the high-cost structure due to a massive air chamber required to withstand the high pressure, and low efficiency of the special turbine which converts bidirectional airflow into unidirectional rotation of the shaft. In this paper, the new system consisting of a unidirectional turbine and a ratchet mechanism is devised. When the water level is rising the turbine does not work i.e. it rotates freely, which has an advantage that high pressure does not occur inside an air chamber; when the water level is descending the turbine works to generate electric power. Therefore, the air chamber can be lighter and of lower cost than that of the previous system and the efficiency of the turbine is definitely higher than the bidirectional turbine used in the previous OWC system. Consequently, the proposed system has much higher cost performance than the previous OWC system.
山口大学工学部の論文