This document discusses solar updraft towers as a renewable energy technology. It begins by outlining current energy crises due to depletion of non-renewable resources and introduces renewable energy sources including solar energy. It then describes the key components of a solar updraft tower - the collector, chimney/tower, and turbine - and how they work together to convert solar energy into kinetic energy to power a turbine. Benefits are that solar updraft towers provide continuous renewable energy without requiring cooling water or producing greenhouse gases. However, they do require large areas of land. The conclusion advocates for solar updraft towers as a technology that can provide simple, reliable solar power accessible to developing nations.

1. SOLAR UPDRAFT TOWER
Presented by,
MOHAMMAD ASHFAQ
8th sem

2.  Energy crises
 Renewable energy
 Solar energy
 Solar updraft tower
 Parts of solar updraft tower
 Energy storage in collector
 Future scope and economical benefits
 Application of Solar updraft tower
 Advantages and Disadvantage
 Conclusion
content

3. Currently earths most of the Non renewable energy is depleted by
human needs.
Some of the Non renewable energy resources are
Natural gas
Petroleum
Coal
Nuclear energy
Energy Crises

4.  Renewable energy is generally defined as energy that
comes from resources which are naturally replenished on
a human timescale.
 Wind energy
 Hydro energy
 Tidal energy
 Solar energy
Renewable Energy

5.  Solar energy refers to the conversion of the sun’s rays
into useful forms of energy.
 Implemented in these way:
 Solar cells
 Solar heaters
 Parabolic dishes
 SOLAR TOWER
Solar energy

6.  The solar updraft tower is
renewable type power
plant.
 Solar updraft towers are
like an inverted funnel,
with a wide skirt to collect
air to then turn a turbine
in the tower
Solar updraft tower

7.  Collector
 Chimney or tower
 Turbine
Parts of solar updraft tower

8.  Collector is the part, which is used to produce hot air by
green-house effect.
 It is usually 5-6 meters high and covers a very large area
about thousands of m²
 The larger the area, the more energy generated from the
chimney.
 Covering materials may be different, such as; glass,
plastic film or glazed collector.
 The most efficient one is glazed collector. It can convert up
to 70% of irradiated solar energy into heat.
Collector

9. Collector figure
Inside view of collector area

10.  Tower is a pressure tube
with low friction loss.
 Efficiency of the plant is
proportional to the tower
height.
 Air velocity at the bottom of
tower reaches about 15m/s.
 There are 2 types of different
chimneys using for the plant
1:Free standing chimney
2:Guy chimney
Chimney or tower

11.  Turbines are used to convert kinetic
energy of air into the mechanical
energy.
 Turbines are placed horizontally in
chimney, vertically in the collector.
 In order to obtain maximum energy
from the warmed air, turbines blades
should cover all the cross-sectional
area of the chimney. To do this,
one big turbine or a few small
turbines should be used in chimney
Turbine
Inside view of turbine

12.  Since collector produce hot
air by greenhouse effect to
produce electric during the
night, tight water filled black
tubes are placed under the
roof as seen in figure
 The water heats up during
the day time and emits its
heat at night
Energy storage in collector

13.  One 200MW power station provide
enough electricity for around 200,000
typical household
 Will reduce production over 900,000 tones
of green house gases annually
 Net energy payback is estimated to be 2-3
years.
Future scope and economical
benefits

14.  Renewable source of energy is used.
 Continuous energy is available.
 Unlike other power plants no cooling water is
required.
 Raw material needed for construction are easily
available.
Application of Solar Updraft Tower

15.  Renewable source of energy is used
 It can be operated in day as well as night .
 It is releases any greenhouse gases .
 Low maintenance
 No pollution
 Needs no cooling water
 Simple design
Advantages

16.  Requires large area of flat land.
 Not adequate for earth quake prone areas.
 Areas with frequent sand storms'
should be avoided.
Disadvantages

17.  Current energy production from coal and oil is damaging
our environment and non renewable energy sources .
SOLAR ENERGY IS THE ANSWER
Technology for the use of solar energy must be:
-Be simple and reliable
-Be accessible to the technologically less
developed countries that are sunny and often have limited
raw materials resources.
Conclusion

18. SOLAR UPDRAFT TOWER
MEETS THESE
CONDITIONs!!!!

19. KEEP CALM
N
GO SOLAR

20. Thank You