7. Water is the most
common substance on
Earth’s surface,
covering 75 % of the
planet but only 3 % of
it can be consumed.
In nature, water exists
in liquid, solid, and
gaseous state.
8.
9. 75% of the human body is made up from water
source: http://www.ebacwatercoolers.com
15. Saving methods
Calculating and cutting down on the average
energy use in a household
Electronic appliances come with
energy labels to inform consumers
about how much electricity they
require. The cost to use that
appliance can be determined from
this label.
In the example on this slide, the piece
of electronics is rated at using 65 watts
of electricity. If you used this appliance
for one hour, it would use 65 watt-
hours of electricity.
Electricity is sold by kilowatt hour, so you
would need to convert watts to kilowatts
to determine the cost. If you used this
appliance for two hours, it would use 130
watts of electricity (2 hours x 65 watts).
16. Electricity consumption
before and after saving measures
0
50
100
150
200
250
300
1-22 February1-22 March Savings
294.5
275.89
18.61
average energy
consumption
measured in kwh
17. Electricity consumption for 32
families
1kwh = 0,68 PLN
13226,3 kwh x 0,68 = 8 993,88 PLN ≈ € 2248,47
1-22 February 2013
1-22 March 2013
10426,12 kwh x 0,68 = 7 089,76 PLN ≈ € 1772,44
18. Three-week
savings
13 226,30 – 10426,12 = 2800,18 kwh
2800,18x 0,68 = 1 902,12 PLN ≈ € 500
59,44 PLN per single family
≈ € 15
22. Water use
before and after saving measures
0
2000
4000
6000
8000
10000
1-22 February1-22 March Savings
9675.2
8425.22
1249.98
water use
measured in
litres (L)
23. 1-22 February 2013
1-22 March 2013
Water use for 32 families
609 m3 x 2, 10 PLN = 1 278,90 PLN ≈ € 320
558 m3 x 2,10 PLN = 1 171,80 PLN ≈ € 293
1m3 = 2,10 PLN
