This document provides details on the Torrent Power Plant Solar Chimney being constructed in Ahmadabad, India. The solar chimney consists of three main parts: the collector, turbines, and chimney. Hot air is collected under the large collector roof and rises up the tall chimney, powering turbines placed inside to generate electricity. While large in scale and capital intensive to build, solar chimneys provide renewable energy without pollution and can generate power around the clock in sunny regions.

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2. CCoonntteennttss::
1. Introduction
2. Torrent Power Plant Solar Chimney
A Parts of the Solar Chimney
i. Collector
ii. Turbines
iii. Chimney
B. Working Principles of Solar Chimney
C. Technology
4. Specification Of Chimney
5. Advantages
6. Disadvantages
7. Conclusion

3. 11..IInnttrroodduuccttiioonn::
In many parts of the world , there is a growing
awareness that some alternative energy sources could
have an important role to play in the production of
electricity.
However , only the solar energy represents totally
nonpolluting inexhaustible energy resource that can
be utilized economically to supply Man’s energy
needs for all time.
The solar chimney system consists of three parts;
The collector , turbines and the chimney.

4. There are lots of methods of using the solar
energy , and the Solar Chimney is one of them,
which can be seen below, in figure.
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SSoollaarr CChhiimmnneeyy AAtt AAhhmmaaddaabbaadd

5. 22..PPaarrttss ooff tthhee SSoollaarr
CChhiimmnneeyy
2.A.(I)The Collector
Collector is the part ,
which is used to
absorb hot air. It is
Collector
usually 5-6 meters
high and covers a very
large area about
thousands of m² as
seen in fıgure. Fig. 2 The Collector.

6. There is no limitation for the surface area.
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 irratiated
solar energy into heat a typical annual
average is 50%. Also, with proper
maintenance, its life span can easily be
60 years or more.

7. 2.A.(II)Turbines
Turbines, seen in figure, are used to convert air to
the mechanical energy.
Fig. 3 Turbine for Solar Chimney Power Station .

8. Fig. 4 Turbine with large diameter. Fig. 5 Small turbines.
Turbines are placed horizontally in chimney. 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, as can be seen from the figure 5. and figure 6.

9. 2.A.(III) The
chimney
The most important
part of the plant is
the chimney,seen in
fıgure 7. It acts as a
thermal engine.
Chimney
Fig. 6 The chimney.

10. Longer the chimneys height, the more
the energy produced from the chimney.
The efficiency of the chimney does not
depend on the amount of the
temperature rising, but depends on the
outside temperature.
Thus, efficiency is directly proportional to the
ratio between the height of the chimney and
the outside temperature.

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SSoollaarr CChhiimmnneeyy
• Solar chimney consists of large area
of transparent covers which receive
solar radiations
• The cold air flows from the bottom of
the chimney due to natural draught
produced due to density difference of
high density surrounding cold air &
low density hot air below the
transparent covers heated by the solar
energy.
•It is called chimney draught.
Fig. 9 Transparent
roof .

13. •The flow rate of air
depends on the draught
produced due to density
difference of cold and
hot air and the height of
the chimney.
•Inside the chimney,
turbines with electric
generator, produce
electricity.
Fig. 10 Schematic seen of
the solar chimney

14. 22..CC.. TTeecchhnnoollooggyy
•Solar chimneys are large-scale power
plants with an output of 5 to 200 MW
each.
•A 100 MW plant will produce about 750
GHz/year.
•For that the glass roof has to be several
kilometers in diameter and the tube has to
be as high as possible to achieve a large
annual output.

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Location:-Torrent Ahmadabad
Type:-Solar tower power plant with steel-reinforced
concrete tower and steel/glass solar air collector.
Features:-
The base of the power will be between 170 to 200
meters.
The chimney is basically a very simple tube with
wall thickness of 25cm, Diameter of chimney
125m and height of chimney is 800m.
The Collector roof will be 4000m in diameter
Company:- Private Limited
Construction Time:-20-28 Months

17. 55..AAddvvaannttaaggeess
Solar chimney power stations are particularly suitable
for generating electricity in deserts and sun-rich
wasteland.
 It provides electricity 24 hour a day from solar
energy alone.
No fuel is needed. It needs no cooling water and is
suitable in extreme drying regions.
It is particularly reliable and a little trouble-prone
compared with other power plants.
The materials concrete, glass and steel necessary for
the building of solar chimney power stations are
everywhere in sufficient quantities.
 No ecological harm and no consumption of
resources.

18. 66..DDiissaaddvvaannttaaggeess
Some estimates say that the cost of generating
electricity from a solar chimney is 5x more than
from a gas turbine. Although fuel is not
required, solar chimneys have a very high
capital cost.
 The structure itself is massive and requires a
lot of engineering expertise and materials to
construct.

19. 77..CCoonncclluussiioonn
Solar chimney power stations could make
important contributions to the energy
supplies in Africa, Asia and Australia,
because there is plenty of space and
sunlight available there.
It is very important for the future, because
our resources are limited, except our sun.