Tidal Energy Test Site of the UNH Center for Ocean Renewable Energy (UNH-CORE)

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This video shows the Tidal Energy Test Site of the UNH Center for Ocean Renewable Energy (UNH-CORE) on an ebb tide. The video was shot from aboard the R/V Gulf Challenger while performing vessel-mounted ADCP-transects to capture the spatial structure of the tidal flow (Fall 2010).

The UNH-CORE Tidal Energy Test Site is located in the Great Bay Estuary, NH, at General Sullivan Bridge, a narrows where Great Bay (through Little Bay) joins the Piscataqua River. The estuary is tidally-dominated. While several rivers drain into Great Bay, for example the Lamprey (from Newmarket, NH), the Squamscott (from Exeter), and others flow into the Piscataqua further downstream, for example the Cocheco (from Dover), they only account for a small fraction of the flow in the estuary. Great Bay provides an inland reservoir that filled and drained by the tides. Almost half the volume of Great Bay typically flows through the narrows at the UNH-CORE Test Site during each tidal cycle.

This site has the fastest current velocities in the Great Bay Estuary with tidal currents of typically greater than 4 knots (2.1 m/s), and maximum currents around 5 knots (2.6 m/s). The power density (=power available in the flowing water per unit area) at 4 knots is 4.5 kW/m^2, and at 5 knots it is 8.7 kW/m^2. With depths between 8m to 11m, deployments and testing of Marine Hydrokinetic (MHK) energy conversion devices up to 4m in diameter can be conducted on custom-designed, modular test platforms (Test Platform v1: 35 ft x 10ft), Test Platform v2 (64ft x 35ft).

For more information, please contact Martin Wosnik or Ken Baldwin at UNH.
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