Key words: Wave energy Oscillating water column Turbine test-rig Bidirectional air flow Reciprocating air flow Oscillating air flow Self-rectifying air turbines Experimental testing.įigure 1: Photograph of the oscillating air flow test rig. Orifice plates or venturi can measure bypass flow. Examples include: (1) a flange can be fitted to investigate the performance of flap/check valves or (2) air turbine performance can be assessed by mounting an adaptor to the exit flange or via a bypass pipe. The air flow exit can be adapted to suit specific applications. Other measurements acquired with the dedicated data logging system include pressure and temperature sensors. Programmable profiles based using position way points and velocityĪ system controller monitors the active piston position and velocity.Ball screw driven by a 32 kW Servo motor.The main parameters of the AMC oscillating air flow test rig are:
In 2018, AMC commissioned a bespoke test facility to generate high volume oscillating air flow.
Due to the oscillatory flow characteristics, bi-directional (or self-rectifying) air turbines are generally adopted.Ī fundamental step in turbine development is to conduct model-scale performance tests, however facilities that accurately simulate bi-directional, or oscillatory, air flows are relatively rare.
The action of the waves moves the water column and, alternately, compresses and decompresses the entrapped air resulting in a bi-directional flow through an air turbine, which generates electricity. The OWC is an artificial blowhole consisting of a chamber that is open beneath the waterline. Oscillating water column (OWC) wave energy converters (WEC) are the most extensively studied and possibly the most reliable of all WEC devices.
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