1. Marta González Díaz
Blanca Díaz Díaz
Miguel de Castro (prof.)

2. Power usage:
Can you reduce it?

3. Objectives:
 Responsible power usage
 Measuring power usage
 Power saving campaign
 Reducing power usage at school
 Reducing power usage at home
 Studying water consumption in power plants

4. Turn Me Off!
Work

5. Power usage
 Awareness-raising at
home about power
usage
 How can we reduce
it?
 How much water is
needed to produce
power?

6. Power usage
 Study of our family's power bills

7. Wattmeter
 Measuring with wattmeters
 Power usage in Euros

8. Wattmeter
 Home installation
 Fluorescent ceiling lights

9. Wattmeter

10. Wattmeter
 Power usage of two fluorescent ceiling
lights working during 8 hours/day for 1
month: €0.50

11. Wattmeter
 Measurement of the power usage of
appliances on STAND BY

12. Wattmeter
 STAND BY:
 Power usage is up to 10% of the
appliance´s usage
 Power consumed by a PC: 90 W
 Power consumed by a PC on STAND BY: 9 W

13. Turn Me Off!
Our power saving
campaign

14. What can we do?
Power saving campaign
 Reduce power usage
at home
 Reduce power usage
at school

15. Turn Me Off!
 Posters in classrooms
and corridors

16. Turn Me Off!
 Stickers on
switches
 Awareness-
raising

17. Turn Me Off!
 Calendar
October November December

18. Campaign at home
Metering the
power
counter daily
for three
months

19. Work in school
 Study of power installations in houses

20. Work in school
 Weekly checks of
the power counter
for three months

21. Turn Me Off!
Environmental impact
...water...

22. Study of power production
Power production in Spain:
• Combustion thermal power plant
• Nuclear power plant
• Water power plant
• Renewable energy:
• Solar energy
• Wind energy
• Biomass energy

23. National energetic study

24. Study of power production
Combustion thermal power plants

25. Study of power production
Nuclear power plants

26. Study of power production
Water power plants

27. Water consumption in power plants
As Pontes Thermal Power Plant:
 Power produced: 1400 MW
 Water consumed: 2161470 m3/year
 Origin of water: river-bed.

28. Water consumption in power plants
Calculations made:
E
P   E  P·t
t
Let' s calculate the energy produced in a year
t  h in a year  365 days· 24 h  8760 h
E  1400000kw·8760 h  1,2264·10 kwh
10

29. Water consumption in power plants
Calculations made:
We now put in relation production and
consumption of water
E  1.2264·10 kwh produced in a year
10
Q  2 161 470 m of water consumed in a year
3
-4 3
1 kwh needs 1.7625·10 m of water

30. Turn Me Off!
Results

31. Results
Weekly consumption measured
160
145,5
140
136
128
120
106,6
101,5 101,5 103,9
100 99,8 100,6
95,8
90
80
Kwh
60
40
20
0

32. Water consumption in power plants
1 kwh1,7625·10-4 m 3

33. Resultados
Estimated water consumption in thermal power plant (m 3)
0,0300
0,0256
0,0250
0,0240
0,0224
0,0200
0,0188
0,0179 0,0179 0,0183
0,0176 0,0177
0,0169
0,0158
0,0150
0,0100
0,0050
0,0000

34. Results
Water consumption in TPP vs hours of sunlight
0,0300 12:00
10:48
0,0256
0,0250
0,0240 9:36
0,0224
8:24
0,0200
0,0188
0,0179 0,0179 0,0183 7:12
0,0176 0,0177
0,0169
0,0158
0,0150 6:00
m3 de agua
4:48 Horas de sol
0,0100
3:36
2:24
0,0050
1:12
0,0000 0:00

35. Results
Water consumption in TPP vs outdoors temperature
0,0300 25,00
0,0256
0,0250
0,0240 20,00
0,0224
0,0200
0,0188
0,0179 0,0179 0,0183 15,00
0,0176 0,0177
0,0169
0,0158
0,0150
m3 de agua
10,00 Temperatura
0,0100
5,00
0,0050
0,0000 0,00

36. Results
 Power usage during the Turn Me Off!
campaign
Date Power used in kwh
09/10/2009 Beginning of measurements
16/10/2009 406
23/10/2009 533
30/10/2009 479
06/11/2009 499
13/11/2009 503
20/11/2009 450
27/11/2009 519
TOTAL
04/12/2009 381 5032 kwh
11/12/2009 680
18/12/2009 582

37. Results
 Water consumption in thermal power plant
during the Turn Me Off! campaign
Date Water consumption m3
09/10/2009 Beginning of measurements
16/10/2009 0,0716
23/10/2009 0,0939
30/10/2009 0,0844
06/11/2009 0,0879
13/11/2009 0,0887
20/11/2009 0,0792
27/11/2009 0,0916
TOTAL
04/12/2009 0,0672 0.887 m3
11/12/2009 0,1199
18/12/2009 0,1026

38. Turn Me Off!
Conclusions:

39. Conclusions
 The results obtained do not indicate
significative savings
 There are many reasons why the study
does not reflect significative savings but...
 We know this is the right way of life and we
should keep up the work.

40. Thank you