Joule Project JIRP106/03 Oct 2006 – Dec 2008 Investigator Team: UoL - Department of Engineering: Richard Burrows, Nick Yates, TS Hedges, DY Chen, Ming.

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Presentation transcript:

Joule Project JIRP106/03 Oct 2006 – Dec 2008 Investigator Team: UoL - Department of Engineering: Richard Burrows, Nick Yates, TS Hedges, DY Chen, Ming Li, JG Zhou POL: Ian Walkington, Judith Wolf, J Holt, R Proctor, (D Prandle) Liverpool Energy Day Foresight Centre Tues 23 rd June 2009 The UK Tidal Range Renewable Energy Resource

Global Tidal Amplitudes

Tidal Barrage Power Generation  Lasting source of clean energy  Large capacity and secure  Time of production predictable  Tried and tested La Rance operating > 40 yrs  Flood protection  Transport link  Tourism  Disadvantage - some environmental modification but not necessarily degradation!!

Power Generation Tide Elevation Basin Elevation h min delay t z Tidal Ebb-mode Power Generation

5 ‘Flat-Estuary’ 0-D Modelling: Dee Estuary (8m turbines)

66 Operating Modes Ebb 1.35 TWh Dual 1.30 TWh Flood 0.79TWh Dee Estuary ( 40x21MW 8m turbines, 40x8mx12m sluices)

7 Dual mode operation: 800MW station - Annual Energy ~ 1.87T Wh ~ 1.23 TWh] Dee Estuary (8m turbines) – Dual-Mode Operation

2-D Modelling using ADCIRC and Unstructured Grid Generation

Flow simulations around the whole grid

Flow simulations around the Irish Sea

(1xDoEn) ebb Change to Tidal Components M2 S2

Flow simulations around the Dee & Mersey Barrages

(1xDoEn) Ebb Mode Power Output Annual Output (TWh) Severn15.81 Dee0.89 Morecambe Bay 5.98 Solway9.66 Mersey0.57 Total32.91 Common Delay of 2 hours imposed

(1xDoEn) ebb Spring / Neap Power

(1xDoEn) dual Spring / Neap Power

1xDoEn Ebb- Mode Energy (TWh) 1xDoEn Dual- Mode Energy (TWh) 3xDoEn Dual- Mode Energy (TWh) Solway Morecambe Bay Mersey Dee Total Energy (TWh) UK (%) Total Energy (TWh) UK (%) Total Energy (TWh) UK (%) North West Severn Total Energy Outputs from 2-D Modelling - provisional figures not fully validated

Grid of the west coast model showing the locations of the four simulated tidal stream farms: Mersey (blue); Skerries (yellow); West Wales (green); Lynmouth (red). Modelling tidal stream power potential

Rated Capacity (MW) Rated Speed (m/s) Mersey202.4 Lynmouth302.0 Skerries West Wales 82.0 Annual Output (GWh/y) Utilisation (%) Mersey7.85 Lynmouth Skerries West Wales

Change in current speed at the tidal stream farms:- Mersey Lynmouth Skerries West Wales Modelling tidal stream power potential

Contents From MacKay (2009) ‘Sustainable Energy- without the hot air’ Red/pink - Regions with peak currents exceeding 1m/s Estuary barrage Coastal lagoon

CONCLUDING COMMENT The UK possesses natural resources in tidal energy capable of making a significant impact on its CO 2 emissions. _____________  Tidal barrages in the estuaries of the Northwest would be capable of meeting about half the region’s electricity need  UK tidal resource ~ 15% barrage/lagoon + ~ 5% ‘stream’  ISSUES outstanding:- sediments – morphological changes & biodiversity implications; tidal regime change & biodiversity implications; tidal stream resource and array performance evaluation; optimal operational scheduling - grid balancing; hydro-mechanical plant performance; economics - holistic cost-benefit analysis  Further information:  Any questions?