Riches from the Wind The people of La Muela, Spain, have suddenly become very wealthy. They enjoy exotic holidays and fantastic sports facilities. N What's made
them so much money?
Banco a l e u La M
N Generating
electricity from the wind!
HO LID
AY S © Science Upd8 at www.upd8.org.uk
N The question is, how rich can the wind make you? N Find out what's involved and do the sums.
Win with Windgen! N Wind spins Windgen 1.5 kW
Windgen 6 kW
3m 6m
While stocks last!
£2,799
10m
15m
Buy one today! Special price:
£6,999 © Science Upd8 at www.upd8.org.uk
the turbine. The turbine drives a generator. And that's that – you've generated electricity! N No fuel costs,
no pollution! N Make money – sell
the electricity you don't need!
How rich can the wind make You ? When you do the sums: Keep the first 4000 Units for your family. That saves paying £300/year for electricity. You can sell the rest. A Turbine's maximum power in kilowatts (kW)
B Average wind speed in m/s
1.5
12
6
12
1.5
7
6
7
C Average power in kW from graph
D Electricity generated per year, in kWh(Units) (C x 24 x 365 x 0.8)
E 'Surplus' electricity for sale each year, in Units
F Income from sales each year at £0.05/Unit
Because wind only Should your generates power 80% of family invest the time in a turbine? Turbine Power Output
Power output (kW)
6 5
4 TASK 3 2 1 0 0
5
10 15 Wind speed (m/s)
1.5 kW 6 kW
Wind too slow to generate electricity
KS4
How rich can the wind make You ? When you do the sums: Keep the first 4000 Units for your family. That saves paying £300/year for electricity. You can sell the rest. Turbine's maximum power in kilowatts (kW)
Average wind speed in m/s
Electricity generated per year, in kWh (Units)
1.5
12
10,500
6
12
42,000
1.5
7
6,000
6
7
12,500
Very windy indeed
'Surplus' electricity for sale each year, in Units
Income from sales each year at £0.05/Unit
Windy
Should your family invest in a turbine?
KS3 © Science Upd8 at www.upd8.org.uk