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1. Energy for electricity

2. We spend huge amounts of energy.
Much of it is supplied by electricity which
comes from generators in power station.

3. WHOA!
You can give a brief description of the topic you
want to talk about here. If you want to talk about
Mercury, you can say that it’s the smallest planet
in the Solar System

4. I. The boiler is heated by burning
fuel
II. Water is heated in а boiler and
steam is produced.
III. Turbines are turned by the
steam
IV. Turbines turn the generator
V. After this the steam is cooled
and condensed
Thermal Power Stations

5.  Energy can be produced from а
nuclear reactor.
 Its energy is released by splitting
uranium atoms. The process is
called nuclear fission.
Thermal Power Stations

8. Question: What is
efficiency?

9. Energy Spreading
Thermal power stations waste more energy than they
deliver
Efficiency of а typical coal-burning power station is only
about 35%
It means 65% of the rest energy is wasted

10. Energy Spreading
Electrical energy
35%
energy loss in
turbines
50%
energy loss in
generators
~5%
energy loss in
boilers
~5%
energy to run
power station
~5%

11. Energy Spreading

12. Question: What can we
do with that wasted
energy?

13. Page 91