In this research, the hydraulic model experiment examined the power generation efficiency of the caisson furnished with PW-OWC type wave power generation equipment. OWC type wave power generation equipment has established the air chamber in which the portion submerged in water carried out the opening in the front of caisson. The problem is that the primary conversion efficiency of energy will decrease rapidly if the period of a wave separates from a resonance period. Therefore the wall called a projecting wall in the normal line right-angled direction was installed in the front of an air chamber. The primary conversion efficiency of energy of OWC breakwater with PW is larger about 10%. that without breakwater.
