Today, we start the lecture 5; this is the
non conventional energy sources, so far last
four
lectures, you for discussed various conventional
sources of file; namely - thermal, hydro
and nuclear.
What are non-conventional sources?
They are many as I said in the
beginning in the earlier lectures.
Today, we start with MHD.
What is MHD?
MHD
stands for magneto hydro dynamic generator.
Gas turbines and several other renewable
energy sources virtual go cross them, as on
when then time passes; of course, we will
students of renewal energy center , you must
be in detail, you will detail about them in
the various other energy courses.
However, we will have brief review of all
the sources,
the point primly with intention of how to
generate electric power using them.
..
Let come to the magneto hydro dynamic generation.
Now, what we are doing in
conventional thermal power?
We were releasing heat by fuel.
Fuel can be natural gas,
coal or oil; we were having thermo cycle,
that is an rankine cycle or carnot cycle.
And
rotational mechanical energy, that is a prime
over connectivity generator, an electric
energy is to be generated.
So, there are two conversions: chemical to
mechanical and
mechanical to electrical.
All of your aware, that eta is equal to eta
1 into eta 2; naturally,
the eta is to be lower of the two.
So, efficiency was in currently low, so two
stages of energy conversion in conventional
thermal.
Therefore, was the low efficiency, the highest
efficiency, we should can achieve
in thermal park in the world; it is on forty
percent.
In India, it is not cross much beyond
thirty for various reasons, that not going
to them.
The best manage government bar plant
is Vijayawada, and best manage private bar
plants is tatas, that is Bombay Tata electric
company, and captive bar plan, it is Renu
Sagar, that is the Hindalko . district.
Now, district matter will change, that was
old district.
What is wrong with rotating
machine?
All of we have done being electrical engineering
students electric machine
courses, may be one, may be two, depending
on which college, which university you
have been, all these rotating machines have
associated losses - the rotational losses,
frictional losses, there are hysteresis losses,
there are ion losses and so on, plus there
maintenance losses.
..
Anything which is moving, we need more maintenance.
However, average said as MHD,
everything is statics.
There is only one convergence fuel, there
is compression of fuel,
hot gases of form at very high temperature
2500 degree centigrade.
And these gases pass
through it re strong magnet, that generates
elective bar.
If you go to were energy center
MHD lab, they use to be big or the magnet
1.8 tesla; tesla is the nothing but labor
per
meter square, that magnets somehow is become
now out of order; otherwise, to use to be
magnet couple of years back in MHD lab.
.
.Whatever I now just said, it is written here.
Conducting gas, MHD generator in is strong
magnetic field and it generates electric power;
here is schematic diagram explaining the
principle of MHD; there are books on MHD.
We do not have to read them, MHD
enough.
.
Gas flow is said, the fuel can be again, anything
can be coal, can be oil, can be anything
at 2500 at a high temperature, all right,
so that . take place.
This is past in strong
magnetic field plus minus anode cathode; there
is the load directly supplies power to the
load and to be the flow out, and these flow
also has enough hot gases; why not use it?
So,
these can again the further used, may be as
code generation form, may be as the combine
a cycle plant.
So, do not lose it to be atmosphere; this
is further use, and that we will
improve the efficiency of the whole plant,
because it you are not wasty in anything;
do
not waste, it improves, it is even ecnomicies;
for example, if you have some sapathis, I
don’t know what do we in hostels, in houses,
is there again used as some dish and we
don’t there shows those things away.
Well, efficiency of around fifty percent,
whereas just now talk about efficiency of
thermal power station, which hasn’t cross
40 percent anywhere in the world; even it
so
called modern technology, super heated extreme
or reheated bind; I would explain you
what is reheated bind; bring out the stream,
pass it the reheated, again bring it bind;
of
course, any such thing we give have a ethadictional
cost, cost as to be there well.
..
So far, the status of MHD is research in the
world; technological feasibility has long
been established, there is no . that its works.
Economic feasibility has not yet been
established; that is why you hardly see MHD
power plant anywhere.
Why we were
interested in MHD earlier on, because we had
very good relationship with formats soviet
union – USSI, and they had lot of interested,
they help us, they supplied a technology.
They had 25 mega watt plant, is an natural
gas as a fuel in soviet union - formats soviet
union – Russia.
Now, they about to scale it up to 500 mega
watt in early nineties and
there was a collapse then power.
So, they could not do it, because they were
doing something, we also did not in India
Thiruchirapalli or Trichy as it is called.
BHEL as established a 5 mega watts MHD
power plant as seen it ., but now it is not
working, because it is not collapse there.
So,
we lost interest and moreover less like museum.
If we visit Trichy, now so near was our
MHD power plant, that is it.
So, it is stop working, because there is no
interest.
There are
other countries also were MHD research is
going on like Newzealand, Japan, but not any
significant power is generated anywhere in
the world, only research papers, PHDs,
design of a burner and so on.
..
Now, we come to the next non conversional
energy source, and that is gas turbines.
What
to we do in gas turbines?
Compressed air fed to the combustion chamber;
this is
combustion chamber - continuous combustion
of fuel oil is maintained.
Hot gases so
produced run gas turbine, something like wind,
in some source run the turbine.
If turbine
is running at a prime over, generator will
and power will be reduced as simple as that.
Well, the efficiency of gas turbines is definitely
lower than even thermal power.
If it is
forty, this is thirty; then, you may ask me
question why you have it, then if this
efficiency is even lower than the thermal
power plant, which is as you to be a low
efficiency power plant, why do we want have
such as power plant at all?
..
I give you thanks a within minute.
As they said although less economical than
thermal
power plant, it is still uses the prime over
- PM is prime over - for its ability to start
and
take load quickly.
We are just turn in or given up the earlier
lectures, like just hydro
power plant may be held it as quick starting
power - five minutes, but can you bring a
hydro power plant your rescue for start duration
peak load?
You cannot go on
establishing hydro power plant everywhere,
just supply peak load.
So, gas turbine which is very handy, the land
power kilometer kilo mega watt required is
very small and it is not that costly; a gestation
period is not that high, eight years or ten
years; that is why gas turbines, though low
efficiency is preferable, wherever you have
to
need the peak load for short duration; peak
load means short duration.
If it is for long
duration, it become a normal load, how to
we call it peak load?
It is very much capable
of meeting sudden peaks of system load; it
is very quick sort.
Can also be used as a
synchronous compensator; what is synchronous
compensator?
Have you heard of
synchronous compensator?
You must read it synchronous compensation
are in power
system course in your fourth year; this is
also called dynamic compensator.
There are two types of compensation; compensation
of what?
It is not perfectly three in
one; it is voltage, it is a power factor,
it improve the efficiency also.
So, what do you do?
You put bank of capacitors, a bank of inductors
across the load; you do not need both
simultaneously.
Either you need capacitors or you need inductors,
why?
Because either it
.goes down or it goes up, it cannot be both
simultaneously; either your inside to studio
or
your outside, only god can be .. So, luckily
we do not have low voltage or high
voltage problem simultaneously in the same
system, in the same point.
Normally, India
is you also know, we have a low voltage problem,
because of the load being more than
the generation.
So, there is the voltage sack; only ferranti
effect, mr learn - under graduate, we have
voltage at receiving an more than voltage
at sending.
Then, we need this bank of
inductors to supply negative watts; other
wise, normally we have to supply positive
watts, that is you have to have a bank of
capacities.
This a static compensations; how
what dynamic compensations?
That is a synchronous motor running a load,
this called
dynamic, that sort of effort is also can be
used using this gas turbines.
Fuel economy increases by using hot exhaust
gases of GT in a conventional stream
generation cycle; the item which has had in
MHD also; anywhere where our . use it,
that comes under west power generation also;
do not use, do not, I mean, have any waste
at all.
Let waste be are primary source now, resource
now and let the new material be the
second, that is the iron which we are living.
Well, Delhi, we have six such unit gas
turbines of thirty mega watt, again which
to request to you to go make visit, use your
energy forum on, use whatever forum you want
and take finite to go yourself; nobody
finding your visit, and see in Rajikhat, you
have these gas turbines.
So, you must go see;
it arrange three pansure, it will give you
support; what do such thing?
I told you so many
things, go and see, like weather put them
the power station, . and so on.
..
Now, we come to the third non conversational
energy source.
Geothermal power, what is
geothermal?
All of us know there is heat inside the earth,
all right.
If you want to have
taste of it, go to sonar, in arrange the picnic
there; after ., sixty seventy kilometers and
there is a hot water is spring coming from
the arc.
People say all skin disease is can be
cure if you go and have a bath there, whatever
you applied.
If you put rice there, in that
water, its get cooks in your time.
There is a tremendous amount of energy of
level in the
earth; heat deep inside in the earth acts
as a source of power, why waste it?
So, you
should have it.
Stream coming from underground in Japan, USA,
Mexico, Newzealand,
Australia, even India and Phillipines is been
using generate power.
..
What do we do?
This is your earth; this is how is your earth,
have two pipes - long pipes
- some it one pipe have it a water inside
the earth.
Here, it will get converted into stream,
send back it to the earth, and use the stream
directly in to the turbine, and then generator,
so power is produced.
It is only initial expanses; when you put
this two long pipes,
depending on what is your capacity your power
station, how deep you should you go.
I
just a higher you go, cooler you feel mr hurt
this.
Similarly, lower you go, hotter you
feel.
In India also, we are very smart people, we
are very intelligent people.
Second, do
not as for us intelligent; only thing is,
brain only works, when it leaves in India,
in US or
Australia or UK, here it is an work so much.
So, we also have 1 megawatt geo thermal power
station in Ladakh, place called puggy
valley.
Another such station is there in Chumantang,
again Kashmir.
Installed capacity
throughout the world five hundred megawatt,
but let me tell you ladies and gentle man,
each megawatt counts, each rupee counts.
If you respect rupee, hundred rupee will
automatically will respect you, because is
sigma important; do not thing is 1 rupee,
save
it, and then 1, 1, 1, everyday, if you say
became starting in whole year become 365.
One
rupee can be made ten rupees, one rupee ask
is many be ten rupees; I am taking about my
students is, there one rupee lot of many,
specially in the volcanic regions, which is
enough in the world, USA in Italy and several
other places.
Equator is definitely there, it
passes through our Srilanka, there the heat
is really good.
Let me tell you geo thermal
country, brutes to Newzealand; I was a Newzealand
in last year, teaching they are
.University in Crist church.
This is tiny small country with just four
million people, less
than even pone or Nagpur population; there
eight percent of power generation comes
strong geo thermal and it is very economic.
Now, we come to renewal energy sources.
So far we were talk about non, I mean, non
conventional; renewal means is no fuel free
and it gets generated automatically.
Why it is
important?
Why should talk of renewal energy sources?
Each products and wiremen, and
wiremen becomes an very big issue.
Now, in the world, there is the reo, conference
in
Japan, Toyoto and so on.
.
Everybody talk about in practice the hardly
do pressures rating to product the
environment.
In fact, there is competition going on, who
is spoil most.
Sustainable
development is the word which all of us pronouns
everyday every times, then become
need of the hour.
Any development has got to be sustainable,
not only here will do well
in minor one, you to do well in minor two,
and here do well in major, or in between,
whatever exercises are given or quizzes announced,
unannounced, take home test,
seminars, in our energy may be there are doing,
within many departments, they have
several components to keep you on your toes,
do better in life; they have enough
academic pressure.
So, they has to be sustainabled; you just
can see 2003, 2004, I will work, and I take
rest
in 2004, 2005, no.
This the energy, in energy area, sustainable
development is only
.possible using renewable energy, while because
everything is limited.
The coal is for 200
years, and they said, we do say that it is
continue for 200 years, because we find more
and more places; exploration were . is there,
yet I had told you availability versus
affordability.
As they said must it is called may be available,
but it cannot afforded it.
If
even coal available, can we effort to bind
it in discriminately?
Why not leave it for our
children and children’s children as is our
Indian Ethanes?
We do everything for our
family for our children.
So, leave coal also for our children, they
will also need elective power.
It is clean, the
renewal energy source is clean, not dirty;
easy to use, economically maximum viable
with increase use.
As usual go on increasing, it will become
more and more available,
because this is what the question is asked,
when you talk of the even energy.
What about
cost?
Anybody willing, they get up and say.
It is no good costly; conversional elective
power, a cost is raisingand; non conversional
energy power, cost is coming down.
This was one rupee per unit as becomes four
five
rupees, that is, to be ten rupees, it is coming
down with more and more use, and more
and more RND, better and better technology,
like example, PV better materials may we
used.
And then, development in power electronics,
development in computers, have may
it very cheap.
Let us first talk about wind power station;
I think after solar, may be when
sun started, wind also started; I am in we
cannot say which came earlier; it is one of
the
oldest source of energy.
If you go and see movies olden days, 16 centaury,
17 centaury, cinababha, rithanathi,
these two go from one place to another.
Mahatma Ghandi went to England to attend the
round table conference in 1931 along with
Gigugo lands, delegation in ship.
Ship words
in principle wind energy.
Even if it is powered, because they checkout
the route in such a
way, that wind haves.
The winds of course generated by solo heating
of an mask; sun is
the mother father of all energy sources.
The sun is not there, you won’t get their
coal; if
sun is not there, you won not get water; the
hydro power, you won’t get rains.
..
1940 was the year when they started attempting,
generating electric energy using wind.
Why?
what was the need?
In fact there was no need as search.
In fact, till 1970, nobody
talk of energy conservation, nobody talk of
energy management; thanks to those trees
steep high kin all process in seventies, that
is changed the whole scenario in the world.
Even US is so supreme power; of course, those
they was another supreme power US is
have.
They got thread; one day they are all finished,
and that is why the whole middle list
party is there, just for why?
Anything else?
Otherwise will clear for enmities scan tree.
They have petro dollars.
Merits are, its area is plentiful, inexhaustible,
to never finished,
non polluting, there is no carbon, there is
no Co2, Ho2, NOX, nothing.
No heat burden
on atmosphere, its not releasing in heat,
like a thermal power plant, nuclear power
plant,
anything.
There is no green house effect; what is green
house effect?
The temperature of the earth
is increasing every year; that is why this
summer, France, the temperature has touch
to
the first time 100 degree paranite, I mean,
though the talk of SI units and MKS unit,
still
in US, the temperature are shown in hundred
degree fahrenheit, and the length is
measured in miles.
It cannot change into kilometers or centigrade;
there if you see there
the news, you find the temperature show in
fahrenheit.
High eighty is I do not thing the centigrade;
High eighty degree is centigrade is no body
left, there all fahrenheit.
So, hundred degree fahrenheit, that is about
37 or 38 degree
.centigrade, which is nothing for us.
In India, we have 48, 49.
So, even in thirty eight
degree, there is so sun is real very very
harsh; that’s why you need alls sets of
cream to
avoid sun winds or even cancer - skin cancer.
So, the sea level is also raised, and who
knows one day there are already we were last
quantified villages in Andhra, some was in
the sea.
And this continues, may be, you become in
my age, then me not be Srilanka,
then we not be Morasies, then we not be you
know all under see; you know, stills there
use to be srilanka here.
Thanks to the green house effect, answer real
thread, all small
island nations may not be there.
If you discriminately go on perning goal,
go on producing power, where repeatedly
telling you there cannot be only plus points
in anything, there has to be negative points.
God has never made anything perfect; even
when he came earth, suppose said, ram and
Krishnan, they were also false with there;
one fellow left his wife and other fellow
life
did is so many things, etc.
What are the demerits in wind power stations?
It is non study;
it is there, it is not there.
If you go for a morning walk, no, there is
no evening today, no
pointing is taken in morning walk.
If those of you belong to villages, if there
know the
people use to sleep outside, for what, because
the wind is going, the pure air of villages.
If you sleep in Delhi, you may not find anything
in the morning, when you get up.
.
So, weather window, no way, nobody wants to
outside and check your doors ten times
for first sleeping, it is lock from inside
or not.
It is not only non-steady, it is
.undependable; you cannot depend at 4 PM,
I generate ten megawatt from wind and
suppose wind is not there, she cannot just
you have to have a ten byte arrangement.
How
are you do not get auto, you know, you will
take 620 or 650 from hostel gate; you have
to have alternative.
So, you get out of your hostel room, well
in advanced to catch you
train, when you go to your home towns.
When your wind is more than 30 kilometer per
hour, then only it generates power; that’s
there is a minimum speed of wind which is
required, if you want to generative power.
If it is lower and there, so there is a criticals
like your excitation; some registers - critical
registers is required.
You must read in your machine course; then,
they may sites are
isolated.
You not every were, backup for continuity,
you have to have backup; this is the
real prompt; like CNG bus, you have to have
a diesel backup, this is the multifuel
operation is required.
Now, I think . is burden embarrassed, which
can then both
petrol and diesel.
So, if you have petrol, use petrol; if you
have diesel, use diesel.
Slowly, it will be four fuels: CNG, as thus
the gas cylinders, and then fuel, petrol,
diesel,
and battery; whichever is economically depending
on your, within city, the battery is ok;
their something like a revakahar, which was
show in IT company also.
You are not there
last year.
Thus, the Bangalore pharmacy . at one stench
go of the 65 kilometers, again
you to recharge your batters.
There are three types of operation in the
wind power, what
are they?
Small – 0.5 to 10 kilowatt, something like
mini, micro and small, hyper for
isolated single premises.
..
So, you living in a village in your field
irrigation, sorry, agriculture, night sleep
there,
small house, small cottage isolated, nobody
in your field, very big, several acres.
Medium for communities: I give a example of
the 25 houses in Uttranchal village and
started generic power - mini power - mini
atom power station.
Similarly, they could have
operate power windows, but there is said wind,
there is the problem, at least mini there
was water is guarantee there, unless suddenly
it is too cold and it is frozen.
So, only it that 1 month of 2 months, because
more than 2 months, I don’t think you have
that is severe winter, where we what to that;
dull lake get frozen when in 30 years, 40
year, you can run in car round in dull lake.
In Kashmir, that happens very rarely; large
2
mega watt to 5 mega watt, please remember,
2 mega watt to 5 mega watt is large in
renewable, which is the wind is very very
small for a conventional power station, but
it is
large in wind, we have wind yet gone be on
5 mega watt wind power station; 10 mega
watt is coming of course.
For connection to the grid, then it is no
longer works is an
isolated wind power stations or is an autonomous
wind power station, it works is the grid
connected.
Any renewal energy can more work in too modes:
in is stand by mode, sorry,
stand alone mode or autonomous mode or grid
connected.
Suppose there is lot of wind
here, but unit do not need power here.
I will still generated period to the grid;
grid is
always requiring power.
So, we cannot money.
.There are two types of wind turbines: horizontal
axis and vertical axis.
Horizontal axis is
very popular, you will find most of the turbines
use in the world are horizontal axis, but
vertical axis has got certain advantages.
So, IIT Delhi, in our center for an studies,
we
have to try it a PHD project of 12 lakhs,
building a vertical axis wind turbine.
You can
see their behind our centers, behind block
six, this big structure on vertical axis,
wind
turbine, wind power station, you may request
of show you, how it is works, how it
generates power, and how bulbs are lead.
It is right there, here you do not go anywhere,
unlike gas turbines, . thermal power station,
whether poor, etcetera, just go and have a
look at it.
Another important is, it is a Denmark which
first generate power using wind,
followed by US; there are US, lot of wind
forms are there, Germany, Spain, we are fifth
in the world.
.
Our total install capacity is 1200 megawatt;
theoretical power, the power generation is
given by these equation; P is equal to point
5 rho a V cube; of course, this is in watts.
It
is given in 0.5, 0.5 is 0.5, I do not an explain
in 0.5; half rho is a density - density of
air;
it is 1201 grams per meter cube.
V of course, it will with attitude; they are
gets oxygen
becomes less and less; that is why when you
go the hill top, you carry oxygen, specially
Mount Everest; V is not volume here, but mean
air velocity in because English language
has only 26 symbols.
.So, they to use same symbols again and again
for various purposes; V is voltage, V is
volume, V is velocity and so on.
For a rotor of 17 meter dia, and a velocity
of 48 kilo
meter per hour, a 30 you imagine how big rotor
is 17 dia; that why these our wind
structure is use.
I do not know whether you seen it.
And 265 kilo watt power it generated
theoretical, but practically is just half,
call efficiency 50 percent.
Most of the wind power
sites are remote; there won not be in the
Bombay termini point wind power station; they
will be join order problem issue, if you have
in wind power station or in India gate.
.
So, they got to be a remote in a rural environment,
island, marine areas, and that is why
most of the wind potential in India is on
costal; Tamilnadu, Gujarat, Tamilnadu is 60
percent; it is huge success story.
And Gujarat is gain 20 percent.
If you visit Tamilnadu
or Gujarat, do see this wind forms, use wind
forms; Orissa, Maharashtra state, Rajasthan,
there all coming up now, because whole countries
divided in to 15 egroclamatic zones,
and those states those areas which are coming
in, you know, semi air it zone; there is
institution on . a jodhpur that is the desert
. less water per more wind; Rajasthan
there is no wind problem, that is why every
everything is done in the night time; it was
cool, it was windy is quite comfortable.
Even most part of the year, install capacity
as potential in India is 4500 mega watt,
tremendous potential; if you can explode it,
if you can tap it, how much we have in any
far do so far, just twelve sixty seven mega
watt as on 2001.
You made another 1000
.mega watts for two years, that is all.
It will be 13, 6, 7.
Now 2003, but I know
authenticated; that is why I am giving you
2001 as given by MNES - ministerial
nonconventional sources, because whenever
the course data to be throw and should be
correct.
World potential, not potential, install capacity
today is 1400 mega watt, which
roughly 100 times India’s.
And bulk of these 1400 in Europe, naturally
when as a three
countries of higher of India, barring US,
all of them all in Europe, Spain, Denmark
and
Germany.
Now, next time the course will talk of solar
energy.
Before you close this, let me tell you
new trade, which is coming in renewal energy
sources, that trade is roof talk.
Earlier on,
in there was know the fourth floor, now the
fourth floor as come; before you came, it
was
only three floors in those teaching blocks;
your energy is ., you can very well see that
fourth floor is not same that remaining three
floor.
Construction is light, because the on
the you know foundation is not meant to have
another floor.
So, roof, we all always have
a roof of level, and now days security reasons
nobody goes and sleep on the roof; same
thing, outside roof same thing, but you can
have the power generation the roof, small
wind power station.
The research going on in IIT Delhi ., how
to generate wind
power with small wind space?
How small?
Just five to six meters per second is small
wind is up level all the time.
So, what we are done?
So, we have developed which amplifies of wind
space; there is wind tunnel here also
incidentally.
Lot of wind work is going on we applied on
mechanism; what is this?
Dynamics principle - floor dynamics, so if
you happen to visit to applied mechanist
department, you seen wind tunnel, you see
how do feel about it.
So, these wind small
winds speed gets amplified to big one, that
wind we lot of power; when it passes to wind
to turbine, and then attach to generative
generates power.
So, roof top power station are becoming very
popular; you know ask me question what
do we do that power; use that power to supply
requirements of power that building.
And
if you have it still extra power, you feel
it to grade, sell it and start on money or
you can
do banking and wheeling.
What is banking and what is wheeling?
I give you power here.
You give me Guavalier, my factories in Guavalier,
but I generate power in Delhi; I do
not need power in Delhi, but you may be have
in factory here, reading power and sell
you power here.
You may have a power station in Guavalier,
you give me there
wheeling, no power - no banking power.
I give you today, tomorrow if I do not have,
.then you give me that is banking.
What do we bank?
We put money today, when we
have, and we withdraw, when we need.
So, that’s is banking and wheeling of power,
which has been as possible by renewable
energy sources.
And I think now all of you five minutes there,
so I will ask you if have
any question whatever we have done till today,
include the today’s lecture.
So, I am just not able to understand power
generation .
Well, logic is a read the of course, . must
read the book, and we have not done in
detail.
Only logic is any . gas passed gas not a incised.
When any what you call, fuel
is put burnt and hot gases are formatted very
high temperature, and it passes it magnetic
fields it gets in incised.
So, the…
Not magnetic is there?
It is a big magnet.
Negative energy is stored.
Yes, energy is naturally that the cure if
the magnet, so that the magnet theorem cure
also.
So, that power when it plus anode is there
and cathode is there, and the power can be,
its
like battery now.
And the load as shows that the figure, and
goes to the load; I different
books on the imaginative, only imaginative
in our library, I do not want to be read the
whole book; I read just inductive chapter
in case you want know more about MHD.
How the kinetic energy is converted to dynamic
energy?
That’s not say lot of air dynamic principle
is what.
In fact, that is the full course is going
on, on wind in hydro, which I have finished
just about fifteen minutes.
Naturally, if you
want more interested wind energy, again you
have to consulted in colleagues you are
right now undergoing that course; I hope you,
but it is . a course title wind and hydro
power, I am a right.
So, please there must be your friends; ask
them same question and, but that much enough
is given in the book also, but them if you
want to details, you should be you have to
go;
that is another book also, we did not know
what is that.
In 1986, given in the my book is
end of the references, you can read that book
is or all alternatively you ask colleagues,
.you undergoing its course; they they may
whole semester - half the semester they may
be
only talk about wind.
Small details tell you read my another book
- basic electrical engine; there are numerical
also . there, and that book is there in our
central library - basic electrical engine.
And
there wind given . in detail, not as small
as power in book; you need you have seen
our in basic electrical engine book.
Not…
That is power engine system basic, means,
something like as smith, something like as
rocking.
Not so thing used within; now, it is big one.
So, there I devoted six pages on wind
energy, unlike power book; there is only one
page one and half page.
And I am happy
that more interested in, why, that is because
of the time, we have four segments to cover:
generation, transmission and distribution.
It is not alone on generator; forget about
alone
wind, which has so is a target.
All you have come to my office in second floor,
and show
you any other question, whatever you have
done, whatever you not done.
I do not think
in reply in couple of minutes, whether you
so many things which we do in which can our
course on, when did have half course at this.
Yes, anybody else?
Done, we stop here.
.
