NDLI: OWC design to increase wave energy absorption efficiency in wave conversion systems

Content Provider	Springer Nature Link
Author	Oh, Jin seok Jang, Jae hee
Copyright Year	2015
Abstract	Oscillating water column (OWC) systems are commonly used as wave energy converters. Such a system consists of an air chamber with a seawater inlet and an air discharger. If seawater moves as a result of the vertical motion of external waves, then the seawater within the OWC moves as well. This movement within the system generates air pressure, which produces power with which to turn the Wells turbine in the air discharge port. OWC systems must be designed in consideration of vibration because waves possess basic oscillation properties. In this research, the efficiency characteristics of OWC systems combined with breakwaters are studied by applying a vibration model. Factors affecting the energy conversion rate of OWC include the volume of air in the air chamber, pressure, and wave period. In this study, changes in the energy absorption efficiency of OWC are measured according to the area ratio between the air discharger and the air chamber, as well as on the basis of air chamber length. Simulations are performed with varying design parameters, such as internal wave, air pressure, and energy, according to changes in external waves. In addition, wave period properties are modified according to the surroundings of the sea in which the OWC system is installed. Variations in these period properties affect energy conversion efficiency. Therefore, changes in energy absorption efficiency due to the wave period are simulated in this study to design an OWC system with high absorption efficiency in view of the characteristic of wave periods in Korea.
Starting Page	2987
Ending Page	2993
Page Count	7
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	29
Issue Number	7
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2015-07-11
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Conversion efficiency Oscillating water column (OWC) Wave conversion system Wave energy Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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