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Title: Self Adaptive Air Turbine for Wave Energy Conversion Using Shutter Valve and OWC Heoght Control System

An oscillating water column (OWC) is one of the most technically viable options for converting wave energy into useful electric power. The OWC system uses the wave energy to “push or pull” air through a high-speed turbine, as illustrated in Figure 1. The turbine is typically a bi-directional turbine, such as a Wells turbine or an advanced Dennis-Auld turbine, as developed by Oceanlinx Ltd. (Oceanlinx), a major developer of OWC systems and a major collaborator with Concepts NREC (CN) in Phase II of this STTR effort. Prior to awarding the STTR to CN, work was underway by CN and Oceanlinx to produce a mechanical linkage mechanism that can be cost-effectively manufactured, and can articulate turbine blades to improve wave energy capture. The articulation is controlled by monitoring the chamber pressure. Funding has been made available from the U.S. Department of Energy (DOE) to CN (DOE DE-FG-08GO18171) to co-share the development of a blade articulation mechanism for the purpose of increasing energy recovery. However, articulating the blades is only one of the many effective design improvements that can be made to the composite subsystems that constitute the turbine generator system.
Publication Date:
OSTI Identifier:
Report Number(s):
TM 1761
CN Project 10274
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
Concepts ETI d.b.a. Concepts NREC
Sponsoring Org:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Hydropower Technology Program (EE-2B)
Contributing Orgs:
Maine Maritime Academy
Country of Publication:
United States
16 TIDAL AND WAVE POWER Oscillating Water Column, Wells Turbine, Wave Energy Conversion, Shutter Valve