Wave energy conversion utilizing vertical motion of water in the array of water chambers aligned in the direction of wave propagation
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As a new technical approach, wave energy converter by using vertical motion of water in the multiple water chambers were developed to realize actual wave power generation as eco-environmental renewable energy. And practical use of wave energy converter was actually to require the following conditions: (1) setting up of the relevant device and its application to wave power generation in case that severe wave loading is avoided; (2) workability in installation and maintenance operations; (3) high energy conversion potential; and (4) low cost. In this system, neither the wall(s) of the chambers nor the energy conversion device(s) are exposed to the impulsive load due to water wave. Also since this system is profitable when set along the jetty or along a long floating body, installation and maintenance are done without difficulty and the cost is reduced. In this paper, we describe the system which consists of a float, a shaft connected with another shaft, a rack and pinion arrangement, a ratchet mechanism, and rotary type generator(s). Then, we present the dynamics model for evaluating the output electric power, and the results of numerical calculation including the effect of the phase shift of up/down motion of the water in the array of water chambers aligned along the direction of wave propagation.
Abstract
As a new technical approach, wave energy converter by using vertical motion of water in the multiple water chambers were developed to realize actual wave power generation as eco-environmental renewable energy. And practical use of wave energy converter was actually to require the following conditions: (1) setting up of the relevant device and its application to wave power generation in case that severe wave loading is avoided; (2) workability in installation and maintenance operations; (3) high energy conversion potential; and (4) low cost. In this system, neither the wall(s) of the chambers nor the energy conversion device(s) are exposed to the impulsive load due to water wave. Also since this system is profitable when set along the jetty or along a long floating body, installation and maintenance are done without difficulty and the cost is reduced. In this paper, we describe the system which consists of a float, a shaft connected with another shaft, a rack and pinion arrangement, a ratchet mechanism, and rotary type generator(s). Then, we present the dynamics model for evaluating the output electric power, and the results of numerical calculation including the effect of the phase shift of up/down motion of the water in the array of water chambers aligned along the direction of wave propagation.
참고문헌 (8)
- Evans, D. V., "Wave power absorption within a resonant harbor", Proceedings of 2nd Intenational Symposium On Wave Energy Utilization, pp.371~378 (1982)
- Hadano, K., "On the dynamics of the float type wave energy conversion", JSCE J. B, 62(3), pp.270~383 (2006)
- Hadano, K., "Water-retarding Chamber Structure for Wavepower Generation", WO2013176171A, ~ (2013)
- Hadano, K., "On the vertical motion of water in the chambers for wave energy converter", Proceedings of the Twenty-third International Offshore and Polar Engineering Conference, pp.516~519 (2013)
- Koirala, P., "Study on the motion of water in the water chambers for wave energy converter", Proceedings of the Tenth ISOPE Pacific, 2012, 1~4
- Independent Administrative Institution Port and Airport Research Institute, "Nagai, N.", Port and Airport Research Institute, 79~331, pp.Technical Note of the Port and Airport Research Institute No. 1017 (2002)
- Sarpkaya, T., "Mechanics of Wave Forces on Offshore Structures" (1981), Van Nostrand Reinhold Company Inc
- Takahashi, S., "Recent development of wave power converters", Lecture Notes of the 29th Summer Seminar on Hydraulic Engineering Course B (1993)