HYDROELECTRIC AND PUMPED STORAGE PRESENT WORLD CAPACITY = 630 GW POWER = DELTA P x FLOW RATE POWER (W) = H =METRES, Q = CUSECS.

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Presentation transcript:

HYDROELECTRIC AND PUMPED STORAGE PRESENT WORLD CAPACITY = 630 GW POWER = DELTA P x FLOW RATE POWER (W) = H =METRES, Q = CUSECS

WORLD TOTAL = 630GW

More than 100m Pelton wheel or Impulse turbine Francis turbine vary output by Q Radial inflow Kaplan turbine, propeller, large Q, low H Can change blade angle Need to run at constant speed

TIDAL TURBINE

FRANCIS TURBINE

POWER CONTROLLED BY FLOW RATE, Vcup = Vjet/2

18 SETS OF 700 MW =12.6 GW, H=120M, FLOW = 9000 TONNES/S

CRUACHAN PUMPER STORAGE SCHEME

CRUACHAN RESERVOIR AND LOCH AWE

DINORWIG PUMPED STORAGE IN WALES

TIDAL POWER GRAVITATIONAL AND CENTRIFUGAL FORCES CAUSED BY THE EARTH-MOON INTERACTION TOTAL UK POTENTIAL = 17% OF CURRENT ELECTRICTY GENERATION

12.5 HRS 50 MINS LATER EACH DAY 29.5 DAY CYCLE 14 DAYS BETWEEN SPRING & NEAP SUN PULL IS 177 BIGGER THAN MOON MID OCEAN TR=0.5M NEAR COASTS TR AMPLIFIED UP TO 15M

MUTUAL ROTATION ABOUT COMMON CENTRE GIVES LARGE OUTWARD G FORCE ON SEA ON FAR SIDE & SMALL G FORCE ON NEAR SIDE. PULL OF MOON STRONG ON NEAR SIDE, WEAKER THAN AVERAGE ON FAR SIDE SUM APPROX SAME ON BOTH SIDES

2 miles of permanent mud at Weston – super - Mare

R AREA = A MASS OF TRAPPED WATER = C OF G = R/2 ABOVE LOW WATER MARK MAX PE IF ALL WATER FALLS R/2 = Over tidal period ‘t’ average PE =

Reversible pumps/turbines better than sluice gates

Turbines 6000MW between high & low basins, 2500 MW high & sea Pumps 2500MW

WAVE ENERGY UP TO 2MW/m Average 80kW/m Twice as much available in UK territorial waters As current installed generating capacity Seasonal peak in the winter Storms a problem

ANNUAL AVERAGE WAVE POWER IN KW/M

SALTER DUCK WAVE POWER CONVERTER

SALTER DUCK WAVE ENERGY CONVERTER